Updated on 2024/12/20

写真a

 
LEE Sihwan
 
Organization
Graduate School of Environmental Studies Department of Environmental Engineering and Architecture Environmental Systems and Planning Associate professor
Graduate School
Graduate School of Environmental Studies
Undergraduate School
School of Engineering Architecture
Title
Associate professor
Contact information
メールアドレス
Homepage
https://lee-lab.net

Degree 1

  1. Ph.D. （ 2011.9   The University of Tokyo ） 

To the head of Degree.▲

Research Interests 4

  1. Indoor air quality

  2. Ventilation facilities

  3. Thermal comfort

  4. Environmental simulation

To the head of Research Interests.▲

Research Areas 1

  1. Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Architectural environment and building equipment  / Ventilation, Thermal Comfort, Environmental Simulation

To the head of Research Areas.▲
 

Papers 12

  1. Application of porous luffa fiber as a natural internal curing material in high-strength mortar Reviewed International coauthorship International journal

    Yi Han, Mingxin Shi, Sihwan Lee, Runsheng Lin, Kang-Jia Wang, Xiao-Yang Wang

    CONSTRUCTION AND BUILDING MATERIALS   Vol. 455   2024.12

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：CONSTRUCTION AND BUILDING MATERIALS  

    This study explores the potential of renewable plant fibers as internal curing (IC) materials, analyzing their potential in high-strength mortar (HSM) applications. Experiments involving the incorporation of different volumetric ratios of luffa fiber into concrete assessed impacts on autogenous shrinkage (AS), mechanical properties, and microstructure. The research found that the addition of luffa fibers extended both the setting times of the mixture, and after final setting, continued the hydration reaction by releasing internally stored water. Compared to the control group, luffa fibers significantly reduced AS by up to 56.87 %, primarily due to their high-water absorption capacity (211 %), which mitigates the internal capillary pressures during the cement hydration process. Moreover, the inclusion of luffa fibers significantly affected the concrete's mechanical properties: a 1 % luffa addition enhanced the compressive strength at 28 days by 7.6 % over the control; concrete with 2 % luffa fiber exhibited the highest flexural strength at 28 days, showing a 9.4 % increase over the control. Microstructural analysis revealed that luffa fiber not only promoted continued hydration but also increased the content of hydration products and enhanced the compactness of the cementitious matrix. Overall, luffa fibers effectively reduce HSM's AS and enhance its mechanical properties and microstructure, showing potential to improve concrete performance.

    DOI： 10.1016/j.conbuildmat.2024.139169

    Web of Science

    Scopus

  2. Performance enhancement of photovoltaic integrated shading devices with flexible solar panel using multi-objective optimization Reviewed International journal

    Risa Ito, Sihwan Lee

    APPLIED ENERGY   Vol. 373   2024.11

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    Photovoltaic integrated shading devices (PVSDs) combine solar shading and electricity generation on building façades, thereby harnessing solar energy. In high-rise buildings, rooftop solar panels typically yield limited amounts of electricity relative to the energy demand of the building. Consequently, integrating PVSDs is crucial for advancing net zero-energy building initiatives. However, PVSDs may obstruct natural light penetration into indoor spaces, diminishing daylight utilization and potentially increasing lighting energy consumption. Moreover, they may compromise the visual connections between indoor and outdoor spaces. Therefore, designing PVSDs that balance energy generation, daylight utilization, and outdoor visibility is imperative. This study aimed to optimize the shape of PVSDs to effectively achieve these objectives. Specifically, the investigation focused on a PVSD composed of flexible solar panels integrated with curved louvers.

    The methodology employed involved multi-objective optimization utilizing parametric studies and environmental simulations. Initially, three-dimensional computer-aided design models of PVSDs with varying shapes were generated by manipulating numerical parameters. Subsequently, key performance indicators, such as panel surface solar irradiation (IPV), continuous daylight autonomy (cDA), and visibility percentage (VP), were computed. Multi-objective optimization was then conducted utilizing the NSGA-II genetic algorithm. Through iterative adjustments of the input parameters, the optimal PVSD shape maximizing IPV, cDA, and VP were identified. The computational results showed that solar louvers with semi-circular top and rectangular bottom shapes offer the optimal configuration. Additionally, energy consumption analyses were performed for 10 Pareto solutions derived from the final generation. The finding indicated that solutions prioritizing IPV maximization resulted in the lowest energy consumption during building operation. This study provides valuable insight into the implementation of PVSDs in building applications and serves as a foundation for future design endeavors.

    DOI： 10.1016/j.apenergy.2024.123866

  3. A numerical hydration model to predict the macro and micro properties of cement–eggshell powder binary blends Reviewed International coauthorship International journal

    Li-Na Zhang, Feng Sun, Yao Liu, Sihwan Lee, Xiao-Yong Wang

    APPLIED SCIENCES   Vol. 14 ( 13 ) page： 5775   2024.7

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：MDPI  

    This study aims to propose a hydration kinetic model for the cement–eggshell powder binary system and predict the performance development of composite concrete through this model. The specific content and results of the model are as follows. First, based on the cumulative hydration heat of the cement and eggshell powder binary system in the first seven days, the parameters of the cement hydration model and the eggshell powder nucleation parameter are calibrated. These parameters remain constant regardless of the mix ratio. Secondly, the hydration heat of the cement–eggshell powder binary system over 28 days is calculated using the hydration model. The results show that at 28 days, for specimens with 0%, 7.5%, and 15% eggshell powder substitution, the cement hydration degrees are 0.832, 0.882, and 0.923, respectively. The hydration heat per gram of cement is 402.69, 426.88, and 446.73 J/g cement, respectively, while the hydration heat per gram of binder is 402.69, 394.86, and 379.72 J/g binder, respectively. Additionally, the hydration model is used to calculate the chemically bound water and calcium hydroxide content of the cement–eggshell powder binary system. At 28 days, for samples with 0%, 7.5%, and 15% eggshell powder, the chemically bound water content is 0.191, 0.188, and 0.180 g/g binder, respectively, and the calcium hydroxide content is 0.183, 0.179, and 0.173 g/g binder, respectively. Finally, a power function is used to regress the calculated hydration heat with experimentally measured compressive strength and surface electrical resistivity. The correlation coefficients for compressive strength and surface electrical resistivity are 0.8474 and 0.9714, respectively. This is because the strength weak point effect of eggshell powder has minimal impact on hydration heat and surface electrical resistivity experiments but significantly affects the strength experiment.

    DOI： 10.3390/app14135775

  4. Heat transfer of a pot above a commercial cooking gas stove (Part 1) Measurement of the convective heat transfer coefficient of the pot side Reviewed

    Yuki Shimanuki, Takashi Kurabuchi, Jeongil Kim, Mizuki Aruga, Takao Osawa, Yoshihiro Toriumi, Sihwan Lee, Toshiaki Omori, Ryuichi Tominaga

    Transactions of the Society of Heating, Air-conditioning and Sanitary Engineers of Japan   Vol. 326   page： 9 - 15   2024.5

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  5. Development of adjustable solar photovoltaic system for integration with solar shading louvers on building façades Reviewed International journal

    Risa Ito, Sihwan Lee

    APPLIED ENERGY   Vol. 359   2024.4

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    Increasing energy demand and its correlation with global warming underscore the urgency of exploring renewable energy sources, particularly solar power. This requirement is even more pronounced for mid- and high-rise buildings characterized by substantial energy consumption, necessitating the identification of optimal locations for solar panel installations. The purpose of this study is to develop an autonomously adjusted solar photovoltaic (PV) system for integration with solar shading louvers (adjustable PV louver system). Because the system can automatically adjust the angle of the solar PV panels by tracking the movement of the sun, electricity generation can be enhanced. To evaluate the performance of the adjustable PV louver system, we measured the amount of electricity generation with prototype model and developed a numerical analysis model for power generation calculations and a heating and cooling load calculation model. The major obtained findings are as follows: (1) Compared with a stationary PV louver system with fixed angles, actual measurement result shows that the adjustable vertical PV louver system exhibited a notable 7.3% improvement in daily electricity generation, whereas the adjustable horizontal PV louver system demonstrated an even more significant increase of 9.3%. (2) A parametric study involving the number of louvers was conducted to evaluate the influence of the shadows on each louver. The results showed that despite the presence of shadows between louvers, maintaining the number of louvers required to cover the window width resulted in improved electricity generation. (3) Heating and cooling load calculation for an office building in Japan shows that installing the adjustable horizontal PV louver system on window surfaces consumes the least amount of electricity.

    DOI： 10.1016/j.apenergy.2024.122711

  6. Effects of ventilation rate and social distancing on risk of transmission of disease: A numerical study using Eulerian-Lagrangian method Reviewed International coauthorship International journal

    Wonseok Oh, Ryozo Ooka, Hideki Kikumoto, Sihwan Lee

    AEROSOL SCIENCE AND TECHNOLOGY   Vol. 58   page： 70 - 90   2023.12

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    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Taylor & Francis Online  

    This study utilized the Eulerian-Lagrangian method to investigate the risk of transmission of disease by tracking particles generated through coughing. The effects of ventilation rates (0.5, 5.0, and 10 ACH) and social distancing (0.9 and 1.8 m) were examined in a small office room using a displacement ventilation system. Numerical simulations considered different particle sizes (1, 5, 10, 20, 40, and 80 μm) to understand particle behavior and transmission routes. The airflow resulting from human coughing was validated with experimental data. Results showed that at a social distance of 0.9 m, increasing the ventilation rate led to a higher fraction of particles directly inhaled by susceptible individuals, potentially causing droplet and airborne transmission. However, maintaining a social distance of 1.8 m and a ventilation rate of 10 ACH significantly reduced the fraction of inhaled particles. Larger particles tended to deposit on floors and surfaces, while smaller particles remained suspended in the air. Higher ventilation rates increased particle deposition on the body surface of susceptible individuals, whereas increasing social distance reduced particle deposition. These findings highlight the importance of appropriate ventilation rates and social distancing in reducing the risk of infection transmission. Maintaining a social distance of 1.8 m combined with increased ventilation effectively reduced the fraction of inhaled particles. Larger particles were more likely to deposit on surfaces, emphasizing the need for regular disinfection. Understanding the dynamics of infectious particles and implementing effective ventilation and distancing measures can help mitigate the spread of infectious diseases in indoor environments.

    DOI： 10.1080/02786826.2023.2271954

  7. Adding dry ice into ultra-high-performance concrete to enhance engineering performances and lower CO2 emissions Reviewed International coauthorship International journal

    Xuan Mei-Yu, Lee Si-hwan, Hu Hui-qin, Wang Xiao-Yong

    CONSTRUCTION AND BUILDING MATERIALS   Vol. 392   2023.8

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Construction and Building Materials  

    Developing low-carbon cement-based materials is crucial to address the pressing sustainability concerns the construction industry faces. This study elucidates the effect of adding dry ice on the micro-meso-macro properties of ultra-high-performance concrete (UHPC). The main original points of the method were summarized as follows: simple operation, low technical difficulty, no specific equipment required, and solving the problem that the carbonation curing method is difficult to use in low water-cement ratio concrete. The results show that adding dry ice generates microscopic CO2 bubbles that react with the carbonation of Ca(OH)2 and improve the later-stage strength and electrical resistivity. And adding dry ice reduces the heat of hydration and promotes ettringite formation. The results of microscopic analyses confirmed that increasing the dry ice content results in a decrease in Ca(OH)2; hence more calcium carbonate is formed. It was also observed that the carbon conversion effect became more apparent when the curing period was 28 days. And optical micrograph analysis showed that adding dry ice increased the total bubble content of the matrix and decreased the average bubble diameter, thus affecting the change in macroscopic properties. Moreover, as the addition of dry ice increased from 0 to 15%, the CO2 emission per unit strength decreased from 6.5 to 4.5 kg·CO2·m−3·MPa−1 (30% reduction in CO2 emission). Therefore, adding dry ice to UHPC is an effective way to utilize carbon and is crucial to achieving carbon neutrality in the concrete industry.

    DOI： 10.1016/j.conbuildmat.2023.131858

    Web of Science

    Scopus

  8. RESEARCH STUDY ON FIRST AID MEASURES AND CRAWL SPACE ENVIRONMENT OF FLOODED HOUSES Reviewed

    MUKAI Masato, NAKAYA Takashi, HASEGAWA Kenichi, LEE Sihwan, SUZUKI Masumi

    AIJ Journal of Technology and Design   Vol. 29 ( 72 ) page： 1139 - 1144   2023.6

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Architectural Institute of Japan  

    As a first aid for the flooded houses, drying was performed by using a blower to ventilate the underfloor and agitate the underfloor air. Afterward, the effectiveness of the blower was examined by measuring the effective ventilation rate and water content. The temperature and humidity, the concentration of suspended fungi, the number of attached fungi, and the concentration of dust were measured to investigate the underfloor environment. As a result, it was suggested that the use of a blower for first aid was effective and could inhibit the increase in mold.

    DOI： 10.3130/aijt.29.1139

    CiNii Research

  9. The Effect of Oyster Shell Powder on the High-Temperature-Properties of Slag-Ceramic Powder-Based Geopolymer Reviewed International coauthorship International journal

    MATERIALS   Vol. 16 ( 10 )   2023.5

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Materials  

    There is a lack of scientific understanding of adding an oyster shell powder (OSP) to geopolymer concrete. The purpose of this study is: (1) to evaluate the high-temperature resistance of the alkali-activated slag ceramic powder (CP) mixture added with OSP at different temperatures, (2) to address the lack of application of environmentally friendly building materials, and (3) to reduce solid waste of OSP pollution and protect the environment. OSP replaces granulated blast furnace slag (GBFS) and CP at 10% and 20% (based on binder), respectively. The mixture was heated to 400.0, 600.0, and 800.0 °C after curing for 180 days. The results of the experiment are summarized as follows: (1) The thermogravimetric (TG) results indicated that the OSP20 samples produced more CASH gels than the control OSP0. (2) As the temperature increased, the compressive strength and ultrasonic pulse velocity (UPV) both decreased. (3) Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) results reveal that the mixture undergoes a phase transition at 800.0 °C, and compared with the control OSP0, OSP20 undergoes a different phase transition. (4) The size change and appearance image results indicate that the mixture with added OSP inhibits shrinkage, and calcium carbonate decomposes to produce off-white CaO. To sum up, adding OSP can effectively reduce the damage of high temperatures (800.0 °C) on the properties of alkali-activated binders.

    DOI： 10.3390/ma16103706

    Web of Science

    Scopus

    PubMed

  10. NUMERICAL SIMULATION OF THERMAL PLUME ABOVE COMMERCIAL COOKING GAS STOVE USING CFD ANALYSIS (PART 1): TEMPERATURE AND VELOCITY DISTRIBUTIONS OF EXHAUST GAS, AND CAPTURE EFFICIENCY OF EXHAUST HOOD UNDER OPEN FLAME CONDITION Reviewed

    SHIMANUKI Yuki, KURABUCHI Takashi, OSAWA Takao, TORIUMI Yoshihiro, LEE Sihwan, KUDO Ami, ASAWA Yasuhisa

    Journal of Environmental Engineering (Transactions of AIJ)   Vol. 87 ( 799 ) page： 569 - 578   2022.9

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Architectural Institute of Japan  

    <p>In this study, prediction method for thermal plume above the gas stove under open flame condition and for the capture efficiency of exhaust hood were investigated with CFD. The buoyancy production term of turbulent energy in the standard <i>k</i>-ε model was improved with general gradient diffusion hypothesis instead of standard gradient diffusion hypothesis widely used in the standard <i>k</i>-ε model. The calculated results of the temperature and velocity distribution in the plume above the gas stove exhibited good correspondence with the experimental results. The calculated capture efficiency of the exhaust hood was also in good agreement with the experimental results.</p>

    DOI： 10.3130/aije.87.569

    CiNii Research

  11. Evaluation of an automatic opening window system to maintain adequate ventilation rates Reviewed International journal

    Akane Tsutsumi, Sihwan Lee

      Vol. 356   2022.8

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：E3S Web of Conferences  

    Under the influence of COVID-19, it is recommended to ventilate to reduce the risk of infection in the room. In an air-conditioned room, opening windows increase the ventilation rate that caused by indoor and outdoor temperature differences. However, there is a concern that opening windows in the air-conditioned room will increase the heating and cooling loads due to air leakage. In addition, it is difficult to maintain the adequate ventilation rate. To solve this problem, we developed an automatic window opening system to control the natural ventilation rate. This system can be controlling the adequate ventilation rate for the room by adjusting the opening area of window automatically. The purpose of this study is to confirm the effectiveness of this system and to understand its performance. In this study, analysis was done to calculate the adequate opening width in Japan, and actual measurements were conducted to understand the operating performance of this system. As a result, it was confirmed that sensible heat load due to ventilation was reduced with this system, and the ventilation rate could be controlled by this system.

    DOI： 10.1051/e3sconf/202235603048

    Scopus

  12. A study on the measurement of unregulated pollutants in Korean residential environments Reviewed International coauthorship International journal

    Hyuntae Kim, Taewoo Kim, Sihwan Lee

    Buildings   Vol. 12(2) ( 243 ) page： 1 - 9   2022.2

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Buildings  

    This study investigated the pollution caused by unregulated chemical substances in Korean residential environments. A TA tube was used for indoor air collection, and Gas Chromatography–Mass Spectrometry was used for the analysis of chemical substances. According to the results of this study, 13 substances out of the 16 analyzed chemicals were detected and, among them, the concentrations of phenol, α-pinene, and limonene within the indoor air were high. The average concentration of phenol was 32.7 µg/m3. α-pinene and limonene were detected, of which the highest concentrations were as 598.2 µg/m3 and 652.5 µg/m3, respectively. The maximum concentrations of these three substances exceeded the levels of the lowest concentration of interest. Notably, α-pinene and limonene were released from the wood itself. Wood has been widely used indoors as a natural building material and as furniture. Therefore, it was considered that this was the reason for the high the concentrations of the two substances in indoor air. However, we do not argue that the usage of wood should be reduced because of the results obtained in this study. Instead, we sµggest that it is important to reduce the emissions of α-pinene and limonene throµgh the processing of the wood, extending its drying period, and determining the most appropriate time of use.

    DOI： 10.3390/buildings12020243

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To the head of Papers.▲

MISC 1

  1. 新型コロナウィルス感染病を対象としたレストランの飛沫核感染確率分布に関する研究

    島貫友貴、浅輪泰久、工藤安未、倉渕隆、金政一、鳥海吉弘、李時桓

    クリーンテクノロジー   Vol. 32 ( 2022年2月号 ) page： 14 - 18   2022.2

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    Language：Japanese   Publishing type：Internal/External technical report, pre-print, etc.  

To the head of MISC.▲

Presentations 92

  1. The non-fixed power balance between two navigation strategies; the demonstration by the controlled experiment International conference

    Takanori Nanahara, Sihwan Lee

    ASim2024, IBPSA Asia Conference  2024.12.9  International Building Performance Simulation Association (IBPSA)

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    Event date： 2024.12

    Language：English   Presentation type：Poster presentation  

    Venue：Osaka, JAPAN   Country：Japan  

  2. Development and verification of a floor heating with dynamic insulation International conference

    Ryunosuke Yonekura, Sihwan Lee

    ASim2024, IBPSA Asia Conference  2024.12.10  International Building Performance Simulation Association (IBPSA)

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    Event date： 2024.12

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Osaka, JAPAN   Country：Japan  

  3. Effects of air barrier tables in restaurants dedicated to heated tobacco products International conference

    Yuan Hirayama, Sihwan Lee

    ASim2024, IBPSA Asia Conference  2024.12.9  International Building Performance Simulation Association (IBPSA)

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    Event date： 2024.12

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Osaka, JAPAN   Country：Japan  

  4. Effectiveness of air leakage control measures for doors open while air conditioner is running in retail stores International conference

    Atsuki Tanaka, Sihwan Lee

    ASim2024, IBPSA Asia Conference  2024.12.9  International Building Performance Simulation Association (IBPSA)

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    Event date： 2024.12

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Osaka, JAPAN   Country：Japan  

  5. Evaluation of impact on reducing air-conditioning load using airflow type PVSD

    Sihwan Lee, Risa Ito

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2024.9.12  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Saga University   Country：Japan  

  6. Development of a heat recovery floor heating system with dynamic insulation technology (Part 1) Verification of its energy-saving effect by using full-scale models

    Ryunosuke Yonekura, Sihwan Lee

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2024.9.13  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Saga University   Country：Japan  

  7. Effects of air barrier tables in restaurants dedicated to heated tobacco products

    Yuan Hirayama, Sihwan Lee

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2024.9.12  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Saga University   Country：Japan  

  8. Study on air exchange efficiency and contaminant removal effectiveness of air purifiers using artificial saliva droplets generator

    Tatsuya Murai, Takashi Kurabuchi, Jeongil Kim, Toshihiro Nonaka, Sihwan Lee

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2024.9.13  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Saga University   Country：Japan  

  9. Study on energy loss through door open while air conditioner running (Part 5) Survey on status in Sugamo Jizo-dori shopping street, and comparison of methods to reduce the air leakage

    Atsuki Tanaka, Sihwan Lee

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2024.9.11  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Saga University   Country：Japan  

  10. Study on analysis model building for capture efficiency of hood at different thermal power in commercial kitchen

    Hiroki Kimura, Takashi Kurabuchi, Jeongil Kim, Toshihiro Nonaka, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo, Ryuchi Tominaga

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2024.9.11  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Saga University   Country：Japan  

  11. Development of a ventilation system that takes into consideration the living environment of the COVID-19 (Part 2) Formation of a home care room when using the third-class ventilation system

    Hayato Ishizaka, Yoshihiro Toriumi, Tomonori Miyokawa, Sihwan Lee, Takashi Kurabuchi, Yutaka Oura

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2024.9.12  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Saga University   Country：Japan  

  12. Optimizing the design of PVSD made with flexible solar panels

    Risa Ito, Sihwan Lee

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2024.9.12  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Saga University   Country：Japan  

  13. Improvement of thermal comfort on recreational vehicle (Part 5) Actual measurement and numerical analysis regarding electricity power independence for trailer houses

    Hideyo Harada, Risa Ito, Sihwan Lee, Kazuhiro Iwai

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.30  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  14. Distance to spatial cue affects strategy selection for wayfinding (Part 1) The process of decision making and experiment in desktop virtual environment

    Takanori Nanahara, Sihwan Lee

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.28  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  15. Development of a floor heating system with dynamic insulation - Verification of energy saving effects

    Ryunosuke Yonekura, Sihwan Lee

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.28  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  16. Optimal design of photovoltaic integrated shading devices with flexible louvers (Part 1) Finding optimal designs using genetic algorithm

    Risa Ito, Sihwan Lee, Kiho Tanaka

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.28  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  17. Optimal design of photovoltaic integrated shading devices with flexible louvers (Part 2) Evaluation of annual energy consumption using optimal solutions

    Kiho Tanaka, Sihwan Lee, Risa Ito

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.28  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  18. Study of exhaled droplet concentration and relative infection risk associated with respiration-related activities

    Yuta Minohara, Takashi Kurabuchi, Jeongil Kim, Toshihiro Nonaka, Sihwan Lee, Tatsuya Murai

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.30  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  19. Study on air leakage through door-open cooling in commercial store (Part 1) Survey on status of door-open cooling in Sugamo Jizo-dori shopping street

    Sihwan Lee, Atsuki Tanaka

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.30  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  20. Study on air leakage through door-open cooling in commercial store (Part 2) Comparison of methods to reduce the air leakage

    Atsuki Tanaka, Sihwan Lee

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.30  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  21. Development of air barrier table to prevent passive smoking

    Yuan Hirayama, Sihwan Lee

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.30  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  22. Development of ventilation system that takes into consideration the after-corona living environment (Part 2) Adoption of exhaust ventilation system and consideration of auxiliary fan

    Tomonori Miyokawa, Hayato Ishizaka, Yoshihiro Toriumi, Sihwan Lee, Takashi Kurabuchi, Yukiyasu Asaoka, Yutaka Oura

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.30  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  23. A study on CFD analysis model for thermal updrafts when using a pot at different heating powers in a commercial kitchen

    Hiroki Kimura, Takashi Kurabuchi, Jeongil Kim, Toshihiro Nonaka, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ryuichi Tominaga, Ami Kudo

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2024.8.30  Architectural Institute of Japan

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Meiji University   Country：Japan  

  24. Study on ventilation efficiency measurement method of air purifier using artificial droplets International conference

    Jeongil Kim, Takashi Kurabuchi, Sihwan Lee, Toshihiro Nonaka, Tatsuya Murai

    Indoor Air 2024, The 18th International Conference on Indoor Air Quality and Climate  2024.7.8  International Society of Indoor Air Quality and Climate (ISIAQ)

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    Event date： 2024.7

    Language：English   Presentation type：Poster presentation  

    Venue：Honolulu, Hawaii, USA   Country：United States  

  25. Field test of thermal performance of alternating current heat recovery system in Korean’s apartment housing International coauthorship International conference

    Beungyong Park, Junghwa Nam, Suhhyun Kwon, Sihwan Lee

    Indoor Air 2024, The 18th International Conference on Indoor Air Quality and Climate  2024.7.8  International Society of Indoor Air Quality and Climate (ISIAQ)

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    Event date： 2024.7

    Language：English   Presentation type：Poster presentation  

    Venue：Honolulu, Hawaii, USA   Country：United States  

  26. Research on the thermal and air environment in temporary housing using quality trailer houses (Part 6) Actual measurement and numerical analysis regarding electricity power independence for trailer houses

    Hideyo Harada, Risa Ito, Sihwan Lee, Kazuhiro Iwai

    Proceedings of Annual Meeting of Hokuriku Chapter, Architectural Institute of Japan  2024.7.7  Hokuriku Chapter, Architectural Institute of Japan

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    Event date： 2024.7

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Toyama   Country：Japan  

  27. Ventilation efficiency evaluation of air purifiers using contaminant removal effectiveness

    Jeongil Kim, Takashi Kurabuchi, Sihwan Lee, Toshihiro Nonaka, Hiko Ri, Tatsuya Murai

    Proceedings of Annual Meeting of the Society of Indoor Environment, Japan  2023.12.1  Society of Indoor Environment, Japan

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    Event date： 2023.11 - 2023.12

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Okinawaken Shichoson Jichi Hall   Country：Japan  

  28. Development of ventilation system that takes into consideration the after-corona living environment (Part 1) Examination for supply ventilation system

    Hayato Ishizaka, Yoshihiro Toriumi, Sihwan Lee, Akane Tsutsumi, Takachi Kurabuchi, Yukiyasu Asaoka, Yutaka Oura

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.14  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  29. A study on thermal insulation performance of windows installed with agricultural thermal insulation materials

    Kanya Murakami, Kazuhiro Iwai, Sihwan Lee, Hideyo Harada

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.15  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  30. Verification of movable photovoltaic power generation system with solar shading louvers

    Risa Ito, Sihwan Lee

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.15  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  31. Improvement of thermal comfort on recreational vehicle (Part4) Indoor thermal environment in winter for each energy conservation standard area division

    Hideyo Harada, Kazuhiro Iwai, Sihwan Lee, Kanya Murakami

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.13  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  32. Predicting natural ventilation rate with particle diameter on single-sided opening - Comparison with Eulerian and Lagrangian model

    Sihwan Lee, Yuta Muto, Jeongil Kim, Takashi Kurabuchi

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.13  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  33. Numerical analysis of evaporation characteristics of water aerosol particles in free-fall

    Yuta Muto, Sihwan Lee, Takashi Kurabuchi, Jeongil Kim

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.13  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  34. Research on a method for measuring ventilation efficiency of air purifiers by simulated droplets

    Hiko Ri, Takashi Kurabuchi, Jeongil Kim, Sihwan Lee, Toshihiro Nonaka, Tatsuya Murai

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.14  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  35. A study on CFD analysis model for thermal updraft in a commercial kitchen (Part1) Experimental details and the inflow heat ratio of the bottom and side of the pot

    Mizuki Aruga, Hiroki Kimura, Takashi Kurabuchi, Jeongil Kim, Toshihiro Nonaka, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo, Ryuichi Tominaga

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.13  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  36. A study on CFD analysis model for thermal updraft in a commercial kitchen (Part2) Validation of analysis model for thermal updraft when using pots

    Hiroki Kimura, Mizuki Aruga, Takashi Kurabuchi, Toshihiro Nonaka, Jeongil Kim, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo, Ryuichi Tominaga

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.13  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  37. Development of an automatic window opening system to control the natural ventilation rate (Part 4) Overview and control method of the automatic window system for casement windows

    Yutaka Oura, Akane Tsutsumi, Sihwan Lee, Yoshihiro Toriumi, Hayato Ishizaka, Takachi Kurabuchi, Yukiyasu Asaoka

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.13  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  38. Development of an automatic window opening system to control the natural ventilation rate (Part 5) Evaluation of ventilation rate and heating load by actual measurements with casement window

    Akane Tsutsumi, Sihwan Lee, Yoshihiro Toriumi, Hayato Ishizaka, Takachi Kurabuchi, Yutaka Oura, Yukiyasu Asaoka

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2023.9.13  Architectural Institute of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kyoto University   Country：Japan  

  39. Performance verification of movable photovoltaic power generation system with solar shading louvers - Comparison of vertical and horizontal louvers

    Risa Ito, Sihwan Lee

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2023.9.6  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Fukui   Country：Japan  

  40. Development of an automatic sliding window system to control adequate ventilation rate (Part 3) Devepment of an automatic window opening and closing system for casement windows

    Akane Tsutsumi, Sihwan Lee, Yoshihiro Toriumi, Takashi Kurabuchi, Yutaka Oura, Hayato Ishizaka

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2023.9.8  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Fukui   Country：Japan  

  41. Study on CFD analysis model building for capture efficiency of hood in commercial kitchens (Part 2) Validation of analytical model for thermal updraft and capture efficiency of hood

    Hiroki Kimura, Mizuki Aruga, Takashi Kurabuchi, Jeongil Kim, Toshihiro Nonaka, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo, Ryuichi Tominaga

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2023.9.7  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Fukui   Country：Japan  

  42. Study on CFD analysis model building for capture efficiency of hood in commercial kitchens (Part 1) Experimental details and the inflow heat ratio of the bottom and side of the pot

    Mizuki Aruga, Hiroki Kimura, Takashi Kurabuchi, Jeongil Kim, Toshihiro Nonaka, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo, Ryuichi Tominaga

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2023.9.7  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Fukui   Country：Japan  

  43. Predicting ventilation rate by considering particle fate (Part 2) Eulerian and Lagrangian numerical models on single-side opening

    Sihwan Lee, Yuta Muto, Jeongil Kim, Takashi Kurabuchi

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2023.9.7  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Fukui   Country：Japan  

  44. Predicting ventilation rate by considering particle fate (Part 1) Visualization and numerical analysis on single sided opening

    Sihwan Lee, Yuta Muto, Jeongil Kim, Hiko Ri, Tatsuya Murai, Takashi Kurabuchi

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2023.9.7  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Fukui   Country：Japan  

  45. Research on a method for measuring ventilation efficiency of air purifiers using artificial saliva droplets

    Hiko Ri, Takashi Kurabuchi, Jeongil Kim, Toshihiro Nonaka, Tatsuya Murai

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2023.9.7  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Fukui   Country：Japan  

  46. Development of a ventilation system that takes into consideration the living environment of the COVID-19

    Hayato Ishizaka, Yoshihiro Toriumi, Sihwan Lee, Akane Tsutsumi, Takashi Kurabuchi, Yutaka Oura

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2023.9.8  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Fukui   Country：Japan  

  47. Study on recreational vehicle as emergency temporary housing and its environmental improvement (Part 5) Indoor thermal environment in winter for each energy conservation standard area division

    Hideyo Harada, Kazuhiro Iwai, Sihwan Lee, Kanya Murakami, Yuta Muto

    Proceedings of Annual Meeting of Hokuriku Chapter, Architectural Institute of Japan  2023.7.6  Hokuriku Chapter, Architectural Institute of Japan

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    Event date： 2023.7

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Toyama   Country：Japan  

  48. A Study on the effect of improving the indoor thermal environment in winter using agricultural thermal insulation materials

    Kanya Murakami, Kazuhiro Iwai, Sihwan Lee, Hideyo Harada

    Proceedings of Annual Meeting of Hokuriku Chapter, Architectural Institute of Japan  2023.7.6  Hokuriku Chapter, Architectural Institute of Japan

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    Event date： 2023.7

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：University of Toyama   Country：Japan  

  49. Reproduction of thermal plume and capture efficiency of hood exhaust in commercial kitchen using CFD analysis International conference

    Mizuki Aruga, Takashi Kurabuchi, Jeongil Kim, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo, Ryuichi Tominaga

    IAQVEC 2023, The 11th international conference on indoor air quality, ventilation & energy conservation in buildings  2023.5.20  IAQVEC

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    Event date： 2023.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Tokyo Big Sight, Tokyo, Japan   Country：Japan  

  50. Development of the airflow type photovoltaic system with solar shading effect International conference

    Risa Ito, Sihwan Lee

    IAQVEC 2023, The 11th international conference on indoor air quality, ventilation & energy conservation in buildings  2023.5.20  IAQVEC

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    Event date： 2023.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Tokyo Big Sight, Tokyo, Japan   Country：Japan  

    DOI： 10.1051/e3sconf/202339604017

  51. Numerical investigation on indoor aerosol dispersion due to natural ventilation with single-sided opening International conference

    Yuta Muto, Sihwan Lee, Takashi Kurabuchi, Jeongil Kim, Jaeung Hwang

    IAQVEC 2023, The 11th international conference on indoor air quality, ventilation & energy conservation in buildings  2023.5.20  IAQVEC

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    Event date： 2023.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Tokyo Big Sight, Tokyo, Japan   Country：Japan  

    DOI： 10.1051/e3sconf/202339602013

  52. Development of an automatic side-hung window system to control the natural ventilation rate International conference

    Akane Tsutsumi, Sihwan Lee, Yoshihiro Toriumi, Takashi Kurabuchi, Yutaka Oura, Yukiyasu Asaoka

    IAQVEC 2023, The 11th international conference on indoor air quality, ventilation & energy conservation in buildings  2023.5.20  IAQVEC

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    Event date： 2023.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Tokyo Big Sight, Tokyo, Japan   Country：Japan  

    DOI： 10.1051/e3sconf/202339602025

  53. Effects of droplet generation by respiration and vocalization on infection risk International conference

    Jeongil Kim, Takashi Kurabuchi, Arisu Furusawa, Haruki Taguchi, Hiko Ri, Sihwan Lee

    IAQVEC 2023, The 11th international conference on indoor air quality, ventilation & energy conservation in buildings  2023.5.20  IAQVEC

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    Event date： 2023.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Tokyo Big Sight, Tokyo, Japan   Country：Japan  

    DOI： 10.1051/e3sconf/202339601032

  54. Development of tracking type photovoltaic system using external louver

    Risa Ito, Sihwan Lee

    Proceedings of Tokai Chapter Architectural Research Meeting, Architectural Institute of Japan  2023.2.21  Tokai Chapter, Architectural Institute of Japan

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    Event date： 2023.2

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Nagoya City University   Country：Japan  

  55. Development of sampling method for microplastics in educational facility

    Hyuntae Kim, Sihwan Lee

    Proceedings of Annual Meeting of the Society of Indoor Environment, Japan  2022.12.2  Society of Indoor Environment, Japan

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    Event date： 2022.12

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Edogawa-ku Sogo Bunkacenter   Country：Japan  

  56. Influence of passive smoking by distance of heated tobacco

    Jaeung Hwang, Sihwan Lee

    Proceedings of Annual Meeting of the Society of Indoor Environment, Japan  2022.12.2  Society of Indoor Environment, Japan

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    Event date： 2022.12

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Edogawa-ku Sogo Bunkacenter   Country：Japan  

  57. Effects of droplet generation by respiration and vocalization on infection risk

    Jeongil Kim, Takashi Kurabuchi, Sihwan Lee, Arisu Furusawa, Haruki Taguchi, Hiko Ri

    Proceedings of Annual Meeting of the Society of Indoor Environment, Japan  2022.12.2  Society of Indoor Environment, Japan

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    Event date： 2022.12

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Edogawa-ku Sogo Bunkacenter   Country：Japan  

  58. Comparison of RANS and LES for indoor aerosol outflow characteristics by natural ventilation across single-side opening model

    Yuta Muto, Sihwan Lee, Takashi Kurabuchi, Jeongil Kim, Jaeung Hwang

    Proceedings of Annual Meeting of the Society of Indoor Environment, Japan  2022.12.2  Society of Indoor Environment, Japan

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    Event date： 2022.12

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Edogawa-ku Sogo Bunkacenter   Country：Japan  

  59. Study on opening angle and flow coefficient of casement window

    Akane Tsutsumi, Sihwan Lee, Yutaka Oura, Yukiyasu Asaoka

    Proceedings of Annual Meeting of the Society of Indoor Environment, Japan  2022.12.2  Society of Indoor Environment, Japan

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    Event date： 2022.12

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Edogawa-ku Sogo Bunkacenter   Country：Japan  

  60. Droplet concentration produced during expiratory activities and evaluation of relative infection risk

    Arisu Furusawa, Takashi Kurabuchi, Jeongil Kim, Sihwan Lee, Haruki Taguchi, Hiko Ri

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2022.9.16  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kobe University   Country：Japan  

  61. Study on CFD analysis method applying GGDH when using pot in commercial kitchen (Part 2) Validation of analysis model for thermal updraft and capture efficiency of hood

    Takao Osawa, Mizuki Aruga, Takachi Kurabuchi, Jeongil Kim, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo, Ryuichi Tominaga

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2022.9.15  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kobe University   Country：Japan  

  62. Study on CFD analysis method applying GGDH when using pot in commercial kitchen (Part 1) CFD analysis using improved Koutani model and experiment details

    Mizuki Aruga, Takao Osawa, Takachi Kurabuchi, Jeongil Kim, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo, Ryuichi Tominaga

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2022.9.15  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kobe University   Country：Japan  

  63. Development of an automatic sliding window system to control adequate ventilation rate (Part 2) Full-scale measurement by using the automatic sliding window system

    Sihwan Lee, Akane Tsutsumi, Yoshihiro Toriumi, Takashi Kurabuchi

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2022.9.15  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kobe University   Country：Japan  

  64. Development of an automatic sliding window system to control adequate ventilation rate (Part 1) Natural ventilation by opening window to keep adequate ventilation rate

    Akane Tsutsumi, Sihwan Lee, Yoshihiro Toriumi, Takashi Kurabuchi

    Technical papers of annual meeting, the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  2022.9.15  The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kobe University   Country：Japan  

  65. Reproduction of capture efficiency of hood exhaust in commercial kitchen using CFD analysis (Part1) Validation of CFD analysis of thermal updraft and exhaust collection rates using improved Koutani model

    Mizuki Aruga, Takao Osawa, Takachi Kurabuchi, Jeongil Kim, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo, Ryuichi Tominaga

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.7  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  66. Respiratory characteristics of heated tobacco due to smoking, and behavior of chemical species

    Jaeung Hwang, Sihwan Lee

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.8  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  67. Study on numerical analysis conditions to evaluate natural ventilation methods across single-side opening

    Yuta Muto, Sihwan Lee, Takashi Kurabuchi, Jeongil Kim, Jaeung Hwang

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.8  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  68. Development of an automatic window opening system to control the natural ventilation rate (Part 3) Evaluation of ventilation rate and heating load by actual measurements in winter season

    Akane Tsutsumi, Sihwan Lee, Yoshihiro Toriumi, Takashi Kurabuchi, Yukiyasu Asaoka, Yutaka Oura

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.7  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  69. Development of an automatic window opening system to control the natural ventilation rate (Part 2) Evaluation of ventilation rate and cooling load by actual measurements in summer season

    Yutaka Oura, Akane Tsutsumi, Sihwan Lee, Yoshihiro Toriumi, Takashi Kurabuchi, Yukiyasu Asaoka

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.7  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  70. Development of an automatic window opening system to control the natural ventilation rate (Part 1) Overview and control method for the automatic window system

    Yukiyasu Asaoka, Akane Tsutsumi, Sihwan Lee, Yoshihiro Toriumi, Takashi Kurabuchi, Yutaka Oura

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.7  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  71. Droplet concentration produced during expiratory activities and evaluation of relative infection risk

    Arisu Furusawa, Takashi Kurabuchi, Jeongil Kim, Sihwan Lee, Haruki Taguchi, Hiko Ri

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.5  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  72. Improvement of thermal comfort on recreational vehicle (Part 3) Thermal environment of recreational vehicle using electric radiant heating system in winter

    Itto Tafu, Kazuhiro Iwai, Sihwan Lee, Hideyo Harada, Kanya Murakami, Yuta Muto, Akane Tsutsumi

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.6  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  73. Improvement of thermal comfort on recreational vehicle (Part 2) Thermal environment of recreational vehicle using agricultural material in summer

    Kanya Murakami, Kazuhiro Iwai, Sihwan Lee, Itto Tafu, Yuta Muto, Akane Tsutsumi, Hideyo Harada

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.6  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  74. Improvement of thermal comfort on recreational vehicle (Part 1) Transition of recreational vehicle with building standards and regional revitalization

    Hideyo Harada, Kazuhiro Iwai, Sihwan Lee, Itto Tafu, Kanya Murakami, Yuta Muto, Akane Tsutsumi

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.6  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  75. Reproduction of capture efficiency of hood exhaust in commercial kitchen using CFD analysis (Part2) Validation of analysis model for thermal updraft and capture efficiency of hood when using pots

    Takao Osawa, Mizuki Aruga, Takachi Kurabuchi, Jeongil Kim, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo, Ryuichi Tominaga

    Summaries of technical papers of annual meeting, Architectural Institute of Japan  2022.9.7  Architectural Institute of Japan

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Hokkaido University of Science   Country：Japan  

  76. Study on recreational vehicle as emergency temporary housing and its environmental improvement (Part 1) Transition of recreational vehicle with building standards and regional revitalization

    Hideyo Harada, Kazuhiro Iwai, Sihwan Lee, Itto Tafu, Kanya Murakami, Yuta Muto, Akane Tsutsumi

    Proceedings of Annual Meeting of Hokuriku Chapter, Architectural Institute of Japan  2022.7.10  Hokuriku Chapter, Architectural Institute of Japan

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    Event date： 2022.7

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Shinshu University   Country：Japan  

  77. Study on recreational vehicle as emergency temporary housing and its environmental improvement (Part 4) Thermal environment of recreational vehicle using electric radiant heating system in winter

    Itto Tafu, Kazuhiro Iwai, Sihwan Lee, Kanya Murakami, Yuta Muto, Akane Tsutsumi, Hideyo Harada

    Proceedings of Annual Meeting of Hokuriku Chapter, Architectural Institute of Japan  2022.7.10  Hokuriku Chapter, Architectural Institute of Japan

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    Event date： 2022.7

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Shinshu University   Country：Japan  

  78. Study on recreational vehicle as emergency temporary housing and its environmental improvement (Part 3) Thermal environment of recreational vehicle using agricultural material in summer

    Kanya Murakami, Kazuhiro Iwai, Sihwan Lee, Itto Tafu, Yuta Muto, Akane Tsutsumi, Hideyo Harada

    Proceedings of Annual Meeting of Hokuriku Chapter, Architectural Institute of Japan  2022.7.10  Hokuriku Chapter, Architectural Institute of Japan

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    Event date： 2022.7

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Shinshu University   Country：Japan  

  79. Study on recreational vehicle as emergency temporary housing and its environmental improvement (Part 2) Thermal comfort by using mist spraying system on recreational vehicle

    Yuta Muto, Akane Tsutsumi, Sihwan Lee, Kazuhiro Iwai, Itto Tafu, Kanya Murakami, Hideyo Harada

    Proceedings of Annual Meeting of Hokuriku Chapter, Architectural Institute of Japan  2022.7.10  Hokuriku Chapter, Architectural Institute of Japan

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    Event date： 2022.7

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Shinshu University   Country：Japan  

  80. Gravity settling of particles and ventilation characteristics by natural ventilation method International conference

    Yuta Muto, Sihwan Lee, Jaeung Hwang

    Indoor Air 2022, The 17th International Conference on Indoor Air Quality and Climate  2022.6.13  Finnish Society of Indoor Air Quality and Climate (FiSIAQ)

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    Event date： 2022.6

    Language：English   Presentation type：Oral presentation (general)  

    Venue：University of Eastern Finland, Finland   Country：Finland  

  81. Respiratory characteristics during smoking and its numerical analysis International conference

    Jaeung Hwang, Sihwan Lee

    Indoor Air 2022, The 17th International Conference on Indoor Air Quality and Climate  2022.6.13  Finnish Society of Indoor Air Quality and Climate (FiSIAQ)

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    Event date： 2022.6

    Language：English   Presentation type：Oral presentation (general)  

    Venue：University of Eastern Finland, Finland   Country：Finland  

  82. Development of an automatic window opening system to control the ventilation rate International conference

    Akane Tsutsumi, Sihwan Lee

    Indoor Air 2022, The 17th International Conference on Indoor Air Quality and Climate  2022.6.13  Finnish Society of Indoor Air Quality and Climate (FiSIAQ)

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    Event date： 2022.6

    Language：English   Presentation type：Oral presentation (general)  

    Venue：University of Eastern Finland, Finland   Country：Finland  

  83. Development of heat recovery radiant heating system using dynamic insulation International conference

    Jaeung Hwang, Sihwan Lee

    CLIMA 2022, The 14th REHVA HVAC World Congress  2022.5.23  Federation of European Heating, Ventilation and Air Conditioning Associations (REHVA)

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    Event date： 2022.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Rotterdam Ahoy Convention Centre in Rotterdam, The Netherlands   Country：Netherlands  

    DOI： https://doi.org/10.34641/clima.2022.197

  84. Transmission due to infectious particles generated by a human: effects of particle size, ventilation rate, and distance between individuals International conference

    Wonseok Oh, Ryozo Ooka, Hideki Kikumoto, Sihwan Lee

    CLIMA 2022, The 14th REHVA HVAC World Congress  2022.5.23  Federation of European Heating, Ventilation and Air Conditioning Associations (REHVA)

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    Event date： 2022.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Rotterdam Ahoy Convention Centre in Rotterdam, The Netherlands   Country：Netherlands  

    DOI： https://doi.org/10.34641/clima.2022.411

  85. Development of an automatic sliding window system to control adequate ventilation rate International conference

    Akane Tsutsumi, Sihwan Lee

    CLIMA 2022, The 14th REHVA HVAC World Congress  2022.5.23  Federation of European Heating, Ventilation and Air Conditioning Associations (REHVA)

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    Event date： 2022.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Rotterdam Ahoy Convention Centre in Rotterdam, The Netherlands   Country：Netherlands  

    DOI： https://doi.org/10.34641/clima.2022.264

  86. Reproduction of thermal plume above commercial cooking gas stove using CFD analysis International conference

    Takao Osawa, Takashi Kurabuchi, Yoshihiro Toriumi, Sihwan Lee, Yuki Shimanuki, Ami Kudo

    CLIMA 2022, The 14th REHVA HVAC World Congress  2022.5.23  Federation of European Heating, Ventilation and Air Conditioning Associations (REHVA)

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    Event date： 2022.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Rotterdam Ahoy Convention Centre in Rotterdam, The Netherlands   Country：Netherlands  

    DOI： https://doi.org/10.34641/clima.2022.324

  87. Relationship between bioaerosol particle size and ventilation removal for airborne infections International conference

    Yuta Muto, Sihwan Lee, Jaeung Hwang

    CLIMA 2022, The 14th REHVA HVAC World Congress  2022.5.23  Federation of European Heating, Ventilation and Air Conditioning Associations (REHVA)

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    Event date： 2022.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Rotterdam Ahoy Convention Centre in Rotterdam, The Netherlands   Country：Netherlands  

    DOI： https://doi.org/10.34641/clima.2022.198

  88. Ventilation improvement using electric fan close by single-sided opening International conference

    Sihwan Lee

    Healthy Buildings 2021-America  2022.1.19  International Society of Indoor Air Quality and Climate

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    Event date： 2022.1

    Language：English   Presentation type：Poster presentation  

    Venue：Hawaii Convention Center in Honolulu, Hawaii   Country：United States  

  89. Development of the glass panel circulating warm water for heat shock reduction International conference

    Satoko Yano, Sihwan Lee, Ryozo Ooka, Yutaka Oura, Yukiyasu Asaoka

    Healthy Buildings 2021-America  2022.1.19  International Society of Indoor Air Quality and Climate

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    Event date： 2022.1

    Language：English   Presentation type：Poster presentation  

    Venue：Hawaii Convention Center in Honolulu, Hawaii   Country：United States  

  90. Ventilation improvement with window opening in air-conditioned room International conference

    Akira Okamura, Sihwan Lee

    Healthy Buildings 2021-America  2022.1.19  International Society of Indoor Air Quality and Climate

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    Event date： 2022.1

    Language：English   Presentation type：Poster presentation  

    Venue：Hawaii Convention Center in Honolulu, Hawaii   Country：United States  

  91. Development of heat recovery radiant heating system using ventilation driving force International conference

    Jaewoong Hwang, Sihwan Lee

    Healthy Buildings 2021-America  2022.1.19  International Society of Indoor Air Quality and Climate

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    Event date： 2022.1

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Hawaii Convention Center in Honolulu, Hawaii   Country：United States  

  92. Respiratory characteristics, thermal comfort and productivity with wearing a mask International conference

    Motoki Kondo, Sihwan Lee

    Healthy Buildings 2021-America  2022.1.19  International Society of Indoor Air Quality and Climate

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    Event date： 2022.1

    Language：English   Presentation type：Poster presentation  

    Venue：Hawaii Convention Center in Honolulu, Hawaii   Country：United States  

▼display all

To the head of Presentations.▲

KAKENHI (Grants-in-Aid for Scientific Research) 2

  1. Development of a new ventilation system using HEMS (Home Energy Management System) that takes into consideration the living environment of after-corona

    Grant number：21H01494  2021.4 - 2026.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Coinvestigator(s) 

  2. 室内空間におけるバイオエアロゾル評価指標の開発と感染リスク低減方法

    Grant number：21H01495  2021.4 - 2024.3

    科学研究費助成事業  基盤研究(B)

    倉渕 隆, 金 政一, 李 時桓

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    Authorship：Coinvestigator(s) 

    本研究は，バイオエアロゾル（ウイルス，バクテリアなど）の挙動を定量的に検討する評価指標を開発し，その指標に基づいた寄与率評価により感染リスク低減方法を構築する。
    世界規模で急速に広がるバイオエアロゾルによる感染症問題に対し，換気・空気清浄・殺菌などの対策が挙げられているが，数理疫学・工学的に評価する指標がなく，それぞれの効果について明確な基準がないのが現状である。そこで実験的な手法による数理疫学の検証，数値解析による定量的な検討により，ウィズコロナ時代における社会科学・工学分野でのソリューションを提案する。

To the head of KAKENHI (Grants-in-Aid for Scientific Research).▲
 

Teaching Experience (On-campus) 1

  1. Architectural and Urban Environmental Engineering

    2022

To the head of Teaching Experience (On-campus).▲