其他摘要：With the development in economy, urban public transportation tends to pay attention to be safer, faster, more stable, coupled with the increasing importance in global environmental awareness; EMU car is comfortable or not will have a significant impact on passengers’ travel, especially on commuters’. The objective of this study is not only make the process of car passengers enjoy a comfortable ride journey, but also improving the EMU energy efficiency of air conditioning systems. This study uses CFD software to simulate the EMU car’s air conditioning system, the temperature variations of kinetic energy. Air-conditioning outlet (inlet) is set to 2, and exports (outlet) is set to 4; air velocity range of 0.1 m/s, 0.2 m/s, 0.3 m/s, 0.4 m/s, ITU body temperature set to 30˚C, 38˚C; air conditioning temperature setting is 22˚C, 25˚C, the human body the best standards of comfort, the temperature set to 28˚C (301 K). The simulation results show that: 1) The lower temperature location is near air conditioning outflow system. The higher temperature is on both sides of the EMU; 2) At the same wind speed, when the temperature profile is setting lower, the contours of the flow field is more intensive; 3) Inside temperature changes directly affect the comfort of the passengers in the car more stable temperature gradient, the higher the comfort. The simulation results show that increasing the wind speed can reduce the temperature and speed up the time to let it more efficiency, not decreasing the temperature setting.
关键词：温度流场;CFD;适温标准;舒适感
其他关键词：Temperature Flow Field; CFD; Optimum Temperature Standards; Feeling of Comfort
