Article
Construction & Building Technology
Weixin Zhao, Sami Lestinen, Panu Mustakallio, Simo Kilpelainen, Juha Jokisalo, Risto Kosonen
Summary: The objective of the study was to compare the performance of four typical air distribution methods in both heating and cooling modes in a mock-up classroom. The study found that the displacement ventilation concept and ceiling diffuser were suitable solutions for classroom environments.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Zhaosong Fang, Peng Zhang, Peihao Wu, Li Li, Zhimin Zheng
Summary: As the global greenhouse effect intensifies, the urban heat island effect becomes increasingly severe, leading to high-temperature and metabolically intensive thermal environments. This study investigated human thermal comfort requirements at different temperatures and metabolic rates, revealing significant adverse symptoms and the preference for higher wind speeds and lower humidity among participants with high metabolic rates. The findings provide valuable insights into mitigating heat exposure-related occupational health risks in high-temperature environments.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Cong Song, Haowei Sang, Yanfeng Liu, Dengjia Wang, Baimu Suolang, Guannan Duan, Ruixuan Cao
Summary: This study classified the intensities of thermal and humid stresses caused by migration, conducted a nationwide questionnaire survey to obtain subjective evaluations, and found that previous exposure significantly influenced people's thermal and humid expectation levels.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
David Bienvenido-Huertas, Maria Luisa de la Hoz-Torres, Antonio J. Aguilar, Blanca Tejedor, Daniel Sanchez-Garcia
Summary: Climate change affects the performance of buildings, but studies on ventilation as a mitigation measure are lacking, particularly in warm regions or areas with hot and humid climates. This paper analyzed the literature on natural ventilation and mixed-mode strategies and found a lack of comprehensive literature reviews. The study highlights the importance of observing past work and implementation. Regional projects should be conducted to assess the effectiveness of ventilation strategies, taking into account other architectural techniques. Optimization of simulation tools should incorporate BIM and generative design for ventilation strategies.
BUILDING AND ENVIRONMENT
(2023)
Article
Environmental Sciences
Jiayu Li, Bohong Zheng, Komi Bernard Bedra
Summary: This paper measures and compares the heat mitigating effects of four natural elements (swimming pools, grass, trees, and fountains) in Singaporean courtyards. The results show that trees significantly reduce the daily Physiological Equivalent Temperature, while fountains are better at reducing air temperature but increase relative humidity. Swimming pools and grass have similar effects on the heat environment.
Article
Multidisciplinary Sciences
Kaori Tamura, Sayaka Matsumoto, Yu Hsuan Tseng, Takayuki Kobayashi, Jun'ichi Miwa, Ken'ichi Miyazawa, Toyotaka Hirao, Soichiro Matsumoto, Seiji Hiramatsu, Hiroyuki Otake, Tsuyoshi Okamoto
Summary: This study evaluated airflow comfort through subjective assessments and physiological measurements. The results showed that under indirect airflow, people felt warmer and more comfortable, with suppression of negative emotions. In direct airflow conditions, face temperatures significantly declined, and the beta and gamma bands of electroencephalograms were inhibited.
Article
Thermodynamics
Jiamin Li, Lirong Wu, Hongxuan Chen
Summary: This study investigated the effects of various factors on the thermal comfort of miners and determined the optimal range of air supply parameters. The impact of labor intensity, environmental parameters, and clothing thermal resistance on thermal comfort was analyzed. Results showed that moderate manual workers had higher thermal comfort than light manual workers in the same environment. In a humid and hot mine, temperature had the greatest influence on thermal comfort, followed by humidity and wind speed. The combination of 27-30 degrees C temperature, 40-50% humidity, and 1.5-2.5 m/s wind speed was found to simultaneously satisfy human comfort and low energy consumption. Workers could adjust the thermal resistance of their clothing to compensate for temperatures within the range of 27-30 degrees C. These findings can guide efforts to reduce energy consumption and improve human thermal comfort.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Construction & Building Technology
Hiroki Ikeda, Takashi Nakaya, Akito Nakagawa, Yoshihiro Maeda
Summary: Thermal comfort can be evaluated using heat balance models and adaptive thermal comfort models. In this study, prediction accuracy of different indices were compared for occupants' thermal sensation, with results showing that PMVG predicted thermal sensation more accurately than PMV and TSENS. Additionally, the adaptive predicted mean vote (aPMV) improved predictive accuracy at high temperatures.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Saud Ghani, Ahmed Osama Mahgoub, Foteini Bakochristou, Esmail A. ElBialy
Summary: This study compared the suitability of seven different thermal comfort indices for assessing outdoor thermal comfort in hot and arid environments, with the WBGT index deemed the most suitable.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Fan Fei, Yan Wang, Luyao Wang, Hiroatsu Fukuda, Wanxiang Yao
Summary: This study investigated the influence of greenery on the thermal environment of elderly care centers in summer and established the relationship between tree-shrub coverage rate and thermal comfort of seniors using numerical simulation. The results showed that shrubs could enhance the tree's ability to improve the outdoor thermal environment, and a certain level of tree-shrub coverage rate could provide good thermal comfort.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Maohui Luo, Shuang Xu, Yin Tang, Hang Yu, Xiang Zhou, Zong Chen
Summary: This study investigated the dynamic thermal responses of human subjects during shower thermal comfort under different conditions. Questionnaires and physiological parameters were collected from 27 subjects. The results showed that the subjects' comfort-related votes changed dynamically during different phases of showering. Factors such as water temperature and duration significantly affected mid-showering thermal comfort, while factors such as ambient temperature and airspeed affected post-showering comfort.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Payam Nejat, John Kaiser Calautit, Yashar Fekri, Mohammadamin Sheikhshahrokhdehkordi, Hayder Alsaad, Conrad Voelker
Summary: Windcatchers are a promising natural ventilation alternative that can provide good ventilation performance and thermal comfort. This study investigated the impact of different terrain types and atmospheric boundary layer (ABL) profiles on the performance of windcatchers. The results showed that as the terrain changes from open countryside to urban areas, the induced flow rate decreases but still meets the recommended standards. The study also found that thermal comfort was affected by outdoor temperature and all terrains failed to provide comfort under higher temperatures.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Yingdi Yin, Dan Zhang, Meng Zhen, Wenqiang Jing, Wei Luo, Wei Feng
Summary: The study found that the effects of thermal-acoustic environment on subjective comfort are different in autumn and winter, and the acoustic environment has a greater impact on subjective comfort in high and low temperature environments.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Biology
Yujie Lin, Yumeng Jin, Hong Jin
Summary: The promotion of China's National Fitness Program has led to the construction of outdoor sports venues and increased research interest in the thermal comfort of people exercising outside. This study investigated seasonal differences in thermal comfort among people engaging in various types of exercise in a severe cold city in China. The results showed significant differences in thermal comfort among different exercise types, with factors such as season, humidity, wind, and sun sensations affecting thermal comfort.
JOURNAL OF THERMAL BIOLOGY
(2022)
Article
Construction & Building Technology
Cong Song, Guannan Duan, Dengjia Wang, Yanfeng Liu, Hu Du, Guixia Chen
Summary: The study focuses on the impact of air velocity on thermal comfort in the non-uniform thermal environment, indicating that increasing air velocity can improve thermal comfort and reduce discomfort caused by the difference between radiant temperature and air temperature.
BUILDING AND ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Haiqiang Liu, Zhihao Zhang, Xidong Ma, Weite Lu, Dongze Li, Shoichi Kojima
Summary: With the rapid urbanization and economic growth in China, the demand for thermal comfort has increased significantly, and building energy efficiency is now emphasized in the 14th five-year plan. The COVID-19 outbreak has prompted the construction industry to consider healthier and more sustainable living environments. Optimization analysis based on energy use can improve energy efficiency and promote the development of green and sustainably designed residential buildings.
Article
Environmental Sciences
Xidong Ma, Zhihao Zhang, Xiaojiao Li, Yan Li
Summary: This study investigates the relationship between outdoor school violence distribution and outdoor campus environment by surveying a boarding school in southern Zhejiang Province, China using a questionnaire and Spatial Syntax theory. The statistical analysis results show a correlation between the distribution of outdoor school violence and the spatial configuration and visibility of the campus environment.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Engineering, Chemical
Junting Gao, Xidong Ma, Tiefeng Xu, Yan Gu, Xiufang Chen, Wenxing Chen, Wangyang Lu
Summary: This study developed new functional pigments by combining commercial inorganic pigments with a novel g-C3N4 photocatalyst through a simple one-step calcination method. These functional pigments exhibited high photocatalytic activity under simulated sunlight and weak white-LED irradiation, and they were successfully applied to multicolored photocatalytic fibers with multiple functions including degradation of organic pollutants and antibacterial properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Construction & Building Technology
Xidong Ma, Haiqiang Liu, Zhihao Zhang, Yan Li
Summary: This study investigated the impact of classroom indoor physical environment (CIPE) on learning performance (LP) in different classroom types. The results showed that low carbon dioxide concentration (CCD) had a positive effect on all learning abilities, while relative humidity (RH) had a negative effect on comprehension memory ability (CMA) and logic deduction ability (LDA). Deeper abilities were more susceptible to air temperature (Ta) and RH. LP in compact classrooms was more vulnerable to CIPE parameters. The findings provide guidance for optimizing CIPE and LP in classroom design.
BUILDING AND ENVIRONMENT
(2023)