摘要
冷凝气流影响城市轨道交通列车空调制冷性能。为了分析冷凝气流流动情况,建立列车空调冷凝气流流动及换热计算模型。计算结果表明:有少量从冷凝风机出口流出的高温空气,没有经过充分的散热,再次进入空调冷凝器进风口。为避免或减少这部分高温气流进入冷凝器进风口,提高空调制冷性能,将空调两侧盖板上靠近冷凝风机的2排开孔取消。对改进后的空调进行仿真计算;根据模拟仿真结果,对改进后的空调进行性能试验。试验结果表明:改进后空调通风量降低0.2%,但制冷量提高1.4%,功耗降低3.7%,空调能效比提高2.7%,证明改进措施有效。
Condensing air flow affects refrigeration performance of air conditioning in urban rail transit train.In order to analyze the condensing air flow,a calculation model of condensing air flow and heat transfer of air conditioning in urban rail transit train was established.The calculation results show that there is a small amount of high temperature air flowing out from the outlet of condensing fan,which does not pass through sufficient heat dissipation and enters the air inlet of air conditioner condenser again.In order to avoid or reduce this heat airflow into the condenser inlet and improve the refrigeration performance of the air conditioning,two rows of openings near the condensing fan on the cover plates on both sides of the air conditioning are cancelled.The improved air conditioning is simulated,and the performance test of the improved air conditioning is carried out according to the simulation results.The test results show that the improved air conditioning ventilation reduced by 0.2%,but the cooling capacity increased by 1.4%,the power consumption decreased by 3.7%,and the energy efficiency ratio of air conditioning increased by 2.7%,which proves that the improved measures are effective.
作者
任继乐
张路亚
于悦青
宋会兵
张瑞刚
REN Jile;ZHANG Luya;YU Yueqing;SONG Huibing;ZHANG Ruigang
出处
《铁道技术监督》
2023年第11期53-56,共4页
Railway Quality Control
基金
洛阳市轨道交通集团有限责任公司科研项目(LGKY-JG-2021-001)。
关键词
城市轨道交通列车
空调
冷凝气流
制冷性能
仿真
Urban Rail Transit Train
Air Conditioning
Condensing Air Flow
Refrigeration Performance
Simulation
