Effect of Open-Window Gaps on the Thermal Environment inside Vehicles Exposed to Solar Radiation

Xiaoxiao Ding, Weirong Zhang (), Zhen Yang, Jiajun Wang, Lingtao Liu, Dalong Gao, Dongdong Guo and Jianyin Xiong
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Xiaoxiao Ding: Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing 100124, China
Weirong Zhang: Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing 100124, China
Zhen Yang: Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing 100124, China
Jiajun Wang: Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing 100124, China
Lingtao Liu: Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing 100124, China
Dalong Gao: Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing 100124, China
Dongdong Guo: Beijing Municipal Vehicle Emissions Management Center, Beijing 100176, China
Jianyin Xiong: School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China

Energies, 2022, vol. 15, issue 17, 1-18

Abstract: To avoid a sharp rise in temperature in the cabin of parked vehicles exposed to solar radiation, experienced drivers leave some windows partly open when the vehicle is parked in the sunlight to achieve cooling through natural ventilation. However, the effectiveness of this measure to reduce the temperature under different weather conditions has not been verified. To this end, this study investigates the effect of open windows on the thermal environment of a vehicle under different environmental conditions. A field measurement, in which two identical vehicles with and without window gaps were used, was carried out in Daxing District, Beijing. The measurements were conducted for 15 days under different window gaps and ambient conditions. The results revealed that open windows resulted in a maximum temperature reduction of 6.7 °C in cabin air temperature under high temperature and high solar radiation, while only 0.6 °C can be reduced under low temperature and low solar radiation. The results also showed that when window gaps effectively reduce the air temperature, lower air temperature can be obtained with larger open-window areas.

Keywords: vehicle thermal environment; open-window gap; field measurement; comparison (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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