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采用Airpak软件对置换通风下的空调列车软卧包厢内热环境进行三维数值模拟,得到包厢内流场、温度场、PMV-PPD和空气龄分布.根据人体舒适性指标(PMV-PPD)和衡量空气品质的空气龄值,对包厢内气流组织和空气品质进行了预测和评价.研究表明:采用Airpak软件,并基于PMV-PPD和空气龄的热环境数值预测和评价,具有全面、系统、直观的优点,为优化空调列车舒适环境和列车空调系统设计提供参考.
Airpak software was used to simulate the thermal environment inside the air-conditioned train soft sleeper box with displacement ventilation and to obtain the flow field, temperature field, PMV-PPD and air age distribution in the air-conditioned train. The air quality was measured according to the human comfort index (PMV-PPD) , The air quality and the air quality in the box are predicted and evaluated.The results show that the Airpak software has the advantages of comprehensive, systematic and intuitionistic value based on the prediction and evaluation of the thermal environment of PMV-PPD and air age , To provide reference for optimizing the comfortable environment of train and the design of train air-conditioning system.