Influencing assessment of different heating modes on thermal comfort in electric vehicle cabin  

作　　者：Jingjing Wu Jianlin Liu Jingde Zhao Yun Su 

机构地区：[1]College of Environmental Science and Engineering,Donghua University,Shanghai,China [2]College of Fashion and Design,Donghua University,Shanghai,China

出　　处：《Energy and Built Environment》2024年第4期556-567,共12页能源与人工环境（英文）

基　　金：supported by the Fundamental Research Funds for the Central University of Donghua University;the National Natural Science Foundation of China (Grant No.52008079,52278094).

摘　　要：Electric vehicle(EV)is more environmental-friendly than gasoline vehicle because the main power is not petrol.For the heating system,the waste heat generated by engines is recycled to heat the cabin of gasoline ones,while the EV need extra electric energy consumption for heating the cabin which decreases the driving range.Personal comfort system(PCS)has been reported that it is an alternative technique to improve occupant thermal comfort and indirectly save building heating energy.This study aims to investigate the occupants’thermal sensation under four heating modes in the EV cabin in winter,including no heating,only PCS,only air conditioning,and both air conditioning and PCS.The field survey is conducted in a parked EV with 12 subjects.Three thermal comfort indexes(PMV,SET^(*),and operative temperature Top)are used and assessed for their applicability in the thermal environment of the EV.Results show that the thermal environment in the cabin is non-uniform and dynamic with the air conditioning mode,while the PCS mode just slightly affects the temperature differences inside.Meanwhile,the subjects’thermal sensations cannot maintain neutral or warmer under the PCS mode only.The results of PMV are lower than the subjects’actual thermal sensation votes(TSV),while the results of SET^(*)and Top show significant linear relationships with the TSV for the correlation coefficients above 0.80.Compare to the air conditioning mode,the neutral SET^(*)and neutral Top are decreased by 2.7℃ and 1.6℃ under the mode with PCS and air conditioning,respectively.The findings indicate that PCS not only has a positive effect on improving the cabin environment and occupant’s thermal sensation but also has the potential to lower the setting temperature of air conditioner of EVs in winter.

关 键 词：Electric vehicle Personal comfort system(PCS) Thermal sensation votes(TSV) Standard effective temperature(SET∗) 

分 类 号：U469.72[机械工程—车辆工程]