汽车亚稳态热环境测试与驾驶员热舒适评价

针对汽车乘员舱热环境测试方法过于复杂、热舒适性评价方法实用性不强的问题,提出了车内亚稳态热环境的简化测试方案和驾驶员热舒适性评价方法.使用热舒适度测试仪实测了各季节驾驶员头部、胸腹部和脚部的环境参数,并对驾驶员进行热感觉预测.招募45位受试者进行主观热感觉调查作为热感觉实际值,确定了整体热感觉的最佳测量代表点.比较整体...

Automotive Metastable Thermal Environment Test and Driver's Thermal Comfort Evaluation

Due to the complexity of the thermal environment test method and the poor practicability of the thermal comfort evaluation method for a vehicle passenger compartment, a simplified test plan to assess the metastable thermal environment and a driver''s thermal comfort evaluation method were proposed. The environmental parameters around the driver''s head, chest and feet were measured in each season by the instrument for thermal comfort, and the driver''s thermal sensation was predicted. 45 volunteers were recruited to conduct a subjective thermal sensation survey for obtaining the actual values of thermal sensation, and the best measurement points for overall thermal sensation were selected. The predicted values and the actual values of overall thermal sensation were compared, and both the expectancy factor and adaptive coefficient were applied for correction. The results show that the point over the head is the best measurement point. The predicted mean vote (PMV) can better predict the neutral thermal sensation and the prediction results in autumn are accurate without correction. Due to the thermal adaptation, the prediction errors occur in summer and winter. The expectancy factor and adaptive coefficient are 0.64 and 0.21 respectively in summer and 0.71 and - 0.52 respectively in winter. The calculated values are close to the reference values and the prediction errors can be significantly reduced after correction. The research results provide a reference for the simplified test of the metastable thermal environment in automobiles and the evaluation of the driver''s thermal comfort.