摘要
太阳辐射对轿车乘员舱热舒适性有较大影响,在设计空调系统制冷时,应该以太阳辐射对乘员产生最大热量时的工况为依据,而在传统设计中往往采用90°太阳高度角时的辐射工况。文章通过采用RNGk-ε湍流方程和Discrete Ordinates辐射模型,结合人体各个部位的热评价机制,对某款轿车的乘员热舒适性进行了多工况数值模拟和分析,结果表明,在63.51°太阳高度角时的辐射工况下,人体各部位当量温度大部分都超出了舒适范围,而直射工况下各部位当量温度基本在舒适范围之内,该分析结果为轿车空调系统的制冷设计提供了参考。
Solar incidence has great influence on the thermal comfort of car cabin,so the cryogen design of car air conditioning system should be grounded on the working condition when the solar incidence generates most heat on car occupants,instead of the condition when the solar altitude angle is 90°,which is usually applied in traditional design.By introducing RNG k-ε turbulence equation and Discrete Ordinates incidence model,and considering the thermal evaluation mechanism of human body parts,multi-conditional numerical simulation of the occupants＇ thermal comfort is conducted on a classic car.The results show that when the altitude angle is 63.51°,the equivalent temperature on human body parts exceeds the comfort level,and when the solar altitude angle is 90°,the equivalent temperature is comfortable.The study is valuable for the design of car air conditioning system.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第8期1135-1137,1159,共4页
Journal of Hefei University of Technology：Natural Science
基金
国家863计划资助项目(2007AA04Z122)
教育部长江学者与创新团队发展计划资助项目(531105050037)
关键词
太阳辐射
高度角
热舒适性
数值模拟
solar incidence
altitude angle
thermal comfort
numerical simulation
