提高地铁车站排热系统效率的思路浅析
Improvement of efficiency of heat exhaust system in underground railway stations
摘要：
模拟分析了地铁隧道空气温度分布规律。根据排热机理，推导出车站排热系统排热效率的计算式。提出对排热风口布置及风量分配的优化建议，指出排热风口不应正对列车发热源，而应该沿活塞风气流方向布置于热源下游；排热风口的排风量应该从列车尾部至头部逐渐增大。
Abstract：
Simulates and analyses the distribution of air temperature in underground railway tunnel. According to the principle of heat exhaust, derives the formula for calculating the efficiency of a heat exhaust system. Puts forward the suggestions for optimizing the arrangement of heat exhaust outlet and the distribution of air volume. Points out that the heat exhaust outlet should not be right facing the heat release source of the train, but should be laid in the downstream of the heat source along the airflow direction of piston wind; the air volume of heat exhaust outlet should be increased gradually from the rear of the train to the head.
Keywords:underground railway station, heat exhaust system, heat exhaust efficiency, air outlet arrangement, air volume distribution, heat release source