高速铁路客车空调负荷的非稳态方法计算

Unsteady Calculating Method for Cooling Load of High-speed Railway Passenger Car

根据高速铁路客车冷负荷特点,采用谐波反应法以非稳态传热的方式计算高速铁路客车的冷负荷,对高速铁路客车和普通铁路客车的车外综合温度波及车体围护结构的传热量进行计算,并对计算结果进行对比。研究结果表明,高速客车如果参照中低速客车空调设计,制冷量设计值偏大;高速铁路客车空调负荷变化不同于中低速客车,应根据实际情况制定其制冷量的调节方案;高速铁路客车在进行轻量化同时要加强车体围护结构保温隔热能力,减小车内温度波动。

According to the characteristics of the cooling load of high-speed railway passenger car,in comparison to the calculation results of moderate speed railway passenger cars, the cooling load of high-speed railway passenger cars was calculated by using the harmonic response method. The integrated outdoor temperature of the railway passenger car and heat through the envelope were calculated, the study shows that the design value of cooling capacity is too large with reference to the moderate speed railway passenger car; the cooling load of high-speed railway passenger car change is different from the moderate speed railway passenger cars ; high-speed railway passenger car should be strengthened the capacity of the body envelope insulation and reduced the temperature fluctuations inside the vehicle.