铁路客车空调负荷研究

采用非稳定传热计算法分别计算了南北向和东西向,以及夕发朝至运行时硬座空调客车的动态负荷。计算结果表明,受外界环境的影响,铁路空调客车在运行时空调负荷变化较大,在不同区间运行的铁路客车,其空调动态负荷的最大值不尽相同。因此认为,不能仅依据TB1951—87《客车空调设计参数》来确定空调机组制冷量,而应根据客车运行区间的最大动态负荷设计空调机组；若能根据客车动态负荷变化趋势,实现客车空调机组的变频调节和自动控制,可达到提高客车舒适度和节能的目的。

Research on Air-conditioning Load of Passenger Train

The unsteady heat conduction method is adopted in this paper to calculate the dynamic load in air- conditioning passenger train.The load of north-southward and west-eastward is calculated respectively.The calculated results indicate that the run load in air-conditioning passenger train varies bigger and the maximum dynamic load for different circulating zone is not exactly the same when it subjected to external influence.Therefore, the paper proposes that the air conditioning capacity can't be confirmed the TB1951- 87 only,but should base on the maximum dynamic load of different circulating zone in the passenger train.In the meantime,if frequency conversion and automatic control technology are used in passenger train air-conditioning,the air conditioning capacity can be automatically regulated according to the change of the dynamic load.So the operation of the air conditioning can vary with the load.The purpose of saving energy is achieved.