太阳辐射对车室内热舒适性的影响分析与改进  

Analysis and Improvement of the Effects of Solar Incidence on Cabin Thermal Comfort

作　　者：宋亚军[1] 赵兰萍[1,2] 杨志刚[2] 熊可嘉[3] 

机构地区：[1]同济大学制冷及低温工程研究所,上海201804 [2]同济大学上海地面交通工具风洞中心,上海201804 [3]上海汽车集团股份有限公司技术中心,上海201804

出　　处：《计算机仿真》2014年第7期148-152,224,共6页Computer Simulation

摘　　要：针对太阳辐射对车室内热环境和热舒适性影响较大的问题,分析了太阳辐射的影响效果,并根据影响效果提出了车室内热舒适性的改进途径和案例验证。为研究太阳辐射对车室内热舒适性的影响,采用人体局部当量温度Teq,i作为热舒适性评价指标,对夏季太阳高度角为61.2°工况下车室内热环境和热舒适性进行数值仿真。结果表明,考虑太阳辐射后,驾驶员各节段Teq,i均上升,大部分节段超出舒适范围。为提高车室内的热舒适性,根据Teq,i计算公式及太阳辐射对车室内热环境的影响特点,在国标范围内降低车窗玻璃透射性,送风温度由10℃降至8℃,车室内热舒适性得到明显提高。为汽车车窗玻璃选择和空调系统的制冷设计提供了参考。He solar incidence has great effect on cabin In this paper, the effect of solar incidence is analyzed, and the improving solution and verified case are proposedon the analysis result. The evaluation temperature on human body parts Teq.i is confirmed to be used as thermal comfort index. The environment with solar incidence at altitude angle 61.2°inside cabin is simulated with computational fluid dynamics method （CFD） to calculate the effect of trans- mission solar radiation on human thermal comfort. The numerical results indicate that, after considering solar radiation, most of the evaluation temperatures on human body parts exceed the comfort level. Depending on computational formula of Teq.i and the thermal environment characteristics inside cabin, lowering the transmittance of window glass in the limits of Chinese standard and decreasing the air supply temperature from 10℃ to 8℃, then the thermal comfort inside cabin is obviously improved.

关 键 词：轿车 模拟 太阳辐射 热舒适性 改进方案 

分 类 号：TB24[一般工业技术—工程设计测绘]