scholarly journals Effects of Building Microclimate on the Thermal Environment of Traditional Japanese Houses during Hot-Humid Summer

Buildings ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 22 ◽  
Author(s):  
Ayaz Hosham ◽  
Tetsu Kubota
Keyword(s):  
Surface Temperature ◽  
Thermal Environment ◽  
Cooling Effect ◽  
Shading Effect ◽  
Indoor Thermal Environment ◽  
Air Temperatures ◽  
Outdoor Spaces ◽  
Open Plan ◽  
Indoor Spaces

The purpose of this study was to investigate the effects of building microclimate on the indoor thermal environment of traditional Japanese houses, focusing especially on the shading effect of trees as well as the cooling effect of spraying water. Basically, the indoor thermal environment was found to follow the outdoor conditions due to the open-plan and lightweight wooden structure. Nevertheless, air temperatures of the living rooms in the two case study houses were lower than the corresponding outdoors by approximately 0.5 °C and 2 °C, respectively. It was found that the semi-outdoor spaces acted as thermal buffers for promoting cross-ventilation as well as pre-cooling to provide “warm but breezy” conditions to the surrounding indoor spaces. The results showed that the surface temperature of semi-outdoor spaces can be reduced by shading and water spraying, among which shading has prolonged effects and water spraying can reduce the surface temperature during peak hours and the following night.

scholarly journals Improvements in Energy Saving and Thermal Environment after Retrofitting with Interior Insulation in Intermittently Cooled Residences in Hot-Summer/Cold-Winter Zone of China: A Case Study in Chengdu

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2776
Author(s):  
Xin Ye ◽  
Jun Lu ◽  
Tao Zhang ◽  
Yupeng Wang ◽  
Hiroatsu Fukuda
Keyword(s):  
Energy Saving ◽  
Thermal Environment ◽  
Real Life ◽  
Average Energy ◽  
Experimental Result ◽  
Cold Winter ◽  
The South ◽  
Indoor Thermal Environment ◽  
Space Cooling

Space cooling is currently the fastest-growing end-user in buildings. The global warming trend combined with increased population and economic development will lead to accelerated growth in space cooling in the future, especially in China. The hot summer and cold winter (HSCW) zone is the most densely populated and economically developed region in China, but with the worst indoor thermal environment. Relatively few studies have been conducted on the actual measurements in the optimization of insulation design under typical intermittent cooling modes in this region. This case study was conducted in Chengdu—the two residences selected were identical in design, but the south bedroom of the case study residence had interior insulation (inside insulation on all opaque interior surfaces of a space) retrofitted in the bedroom area in 2017. In August 2019, a comparative on-site measurement was done to investigate the effect of the retrofit work under three typical intermittent cooling patterns in the real-life scenario. The experimental result shows that interior insulation provides a significant improvement in energy-saving and the indoor thermal environment. The average energy savings in daily cooling energy consumption of the south bedroom is 42.09%, with the maximum reaching 48.91%. In the bedroom with interior insulation retrofit, the indoor temperature is closer to the set temperature and the vertical temperature difference is smaller during the cooling period; when the air conditioner is off, the room remains a comfortable temperature for a slightly longer time.

Analysis and Test on Indoor Thermal Environment of Timber Dwellings in Shangri-La

2013 ◽  
Vol 651 ◽  
pp. 466-469
Author(s):  
Li Ping Li ◽  
He Wang ◽  
Shuai Fan
Keyword(s):  
Surface Temperature ◽  
Physical Environment ◽  
Thermal Environment ◽  
Field Tests ◽  
Building Envelope ◽  
Test Results ◽  
Indoor Temperature ◽  
Temperature Changes ◽  
Indoor Thermal Environment

Field tests for indoor thermal environment of Tibetan-style timber dwellings in Shangri-La were carried out， from the perspective of physical environment of buildings, and more specifically, the indoor temperature of Tibetan-style timber dwellings as well as the surface temperature of building envelope were tested and comparatively analyzed. The test results show the current situations and features of indoor temperature changes of Tibetan-style timber dwellings, which may provide a basis for improving the thermal environment of Tibetan-style dwellings.

scholarly journals Indoor Thermal Environment Long-Term Data Analytics Using IoT Devices in Korean Apartments: A Case Study

2020 ◽  
Vol 17 (19) ◽  
pp. 7334
Author(s):  
Hyunjun Yun ◽  
Jinho Yang ◽  
Byong Hyoek Lee ◽  
Jongcheol Kim ◽  
Jong-Ryeul Sohn
Keyword(s):  
Real Time ◽  
Thermal Environment ◽  
Temperature Management ◽  
Living Room ◽  
Indoor Thermal Environment ◽  
Long Term Monitoring ◽  
Iot Devices ◽  
Term Monitoring

IoT-based monitoring devices can transmit real-time and long-term thermal environment data, enabling innovative conversion for the evaluation and management of the indoor thermal environment. However, long-term indoor thermal measurements using IoT-based devices to investigate health effects have rarely been conducted. Using apartments in Seoul as a case study, we conducted long-term monitoring of thermal environmental using IoT-based real-time wireless sensors. We measured the temperature, relative humidity (RH), and CO2 in the kitchen, living room, and bedrooms of each household over one year. In addition, in one of the houses, velocity and globe temperatures were measured for multiple summer and autumn seasons. Results of our present study indicated that outdoor temperature is an important influencing factor of indoor thermal environment and indoor RH is a good indicator of residents’ lifestyle. Our findings highlighted the need for temperature management in summer, RH management in winter, and kitchen thermal environment management during summer and tropical nights. This study suggested that IoT devices are a potential approach for evaluating personal exposure to indoor thermal environmental risks. In addition, long-term monitoring and analysis is an efficient approach for analyzing complex indoor thermal environments and is a viable method for application in healthcare.

Assessment of urban cooling effect based on downscaled land surface temperature: A case study for Fukuoka, Japan

Urban Climate ◽  
2021 ◽  
Vol 36 ◽  
pp. 100790
Author(s):  
Wangchongyu Peng ◽  
Xin Yuan ◽  
Weijun Gao ◽  
Rui Wang ◽  
Wei Chen
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Cooling Effect

scholarly journals The cooling effect of ^|^ldquo;green curtain^|^rdquo; on the indoor thermal environment in the apartment building

2012 ◽  
Vol 38 (1) ◽  
pp. 39-44 ◽  
Author(s):  
Masashi KATO ◽  
Yasuo KUWASAWA ◽  
Norimitsu ISHII ◽  
Kimihiro HINO ◽  
Tsuyoshi HASHIMOTO ◽  
...  
Keyword(s):  
Thermal Environment ◽  
Cooling Effect ◽  
Apartment Building ◽  
Indoor Thermal Environment

scholarly journals Study on the Cooling Effect of Window Gardens

2020 ◽  
Vol 172 ◽  
pp. 24009
Author(s):  
Jing Ren ◽  
Ming fang Tang
Keyword(s):  
Surface Temperature ◽  
Indoor Air ◽  
Thermal Environment ◽  
Building Envelope ◽  
Air Conditioners ◽  
Interior Surface ◽  
Average Temperature ◽  
Air Temperatures ◽  
Physiological Benefits ◽  
The Impact

Window gardens are known to provide a window view with psychological and physiological benefits, whether they can be used for passive cooling of buildings remains to be investigated. This paper aims to supplement the impact of window gardens on the thermal performance of windows, walls, and even indoor air temperatures, which previous research has ignored. A field experiment was conducted for two classrooms with integrated planting troughs outside the windows, with and without living plants. The indoor air temperature and the interior surface temperature of the two classrooms were measured on a typical hot summer day, with windows closed and air conditioners switched off. The results show that: Window garden with living plants can not only reduce the average temperature of the indoor air by 1.1 ℃, but also reduce the average temperature of the interior surface of the building envelope by 2.8 ℃, the reduction of interior surface temperature is more obvious, which is due to the formation of a cold bridge. Therefore, Window garden can improve the summer indoor thermal environment in hot summer and warm winter area in China.

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