不同回路结构表冷器的变工况性能分析

发布时间：2018-07-13 08:17

【摘要】：建立了空调箱中表冷器的模型,与试验结果对比验证模型的正确性。利用所建立的模型,研究进风量、水流量和进风干球温度对不同回路结构空调箱表冷器的传热和流动性能的影响。结果表明,进风干球温度增大时,半回路表冷器制冷量增长幅度最大,双回路表冷器显冷量增长率最高;水流量增加时,半回路表冷器水侧阻力显著高于其他回路结构表冷器,双回路表冷器制冷量和空气侧阻力增长率最高;不同回路结构表冷器制冷量的差异随进风量的增大趋于明显。全回路表冷器各项性能参数均介于半回路表冷器和双回路表冷器之间。
[Abstract]:The model of the surface cooler in the air conditioning box is established, and the correctness of the model is verified by comparing the test results. Based on the established model, the effects of inlet air volume, water flow rate and air inlet air drying ball temperature on the heat transfer and fluidity of the surface coolers with different loop structures are studied. The results show that when the inlet air drying ball temperature increases, the cooling capacity of the half loop surface cooler is the largest, and that of the double loop surface cooler is the highest, and the water side resistance of the half loop surface cooler is significantly higher than that of other circuit structure surface coolers when the water flow rate increases. The refrigerating capacity and the air side resistance growth rate of the double-loop surface cooler are the highest, and the difference of the cooling capacity of the different circuit structures tends to be obvious with the increase of the inlet air volume. The performance parameters of the full loop gauge cooler are between the half loop gauge cooler and the double loop gauge cooler.
【作者单位】：上海交通大学;
【分类号】：TB657.2

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