Abstract As an emerging subway waste heat utilization system, capillary network subway source heat pump system has high practical value. At present, there are many researches on capillary network heat exchanger, but little research has been done on the influencing factors and design optimization of the entire system. The orthogonal test method is used to determine the key design parameters affecting the subway source heat pump system. The multi-factor analysis method is used to optimize the system design. The results show that the key design parameters that affect the subway source heat pump system are the cooling and heating load ratio and the flow velocity in the capillary tube. Meanwhile in the future system design, the range of the cold-heat load ratio of the subway source heat pump system is between 1: 1.5 and 1: 2.5 and the flow velocity in the capillary tube is between 0.05 m/s and 0.09 m/s, which can be used as a reference for system design.

中文翻译：

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带毛细管交换器的地铁源热泵系统关键设计参数研究

摘要 作为一种新兴的地铁余热利用系统，毛细管网地铁源热泵系统具有很高的实用价值。目前，关于毛细管网络换热器的研究较多，但对整个系统的影响因素和设计优化的研究较少。采用正交试验方法确定影响地铁源热泵系统的关键设计参数。采用多因素分析方法优化系统设计。结果表明，影响地铁源热泵系统的关键设计参数是冷热负荷比和毛细管内的流速。同时在未来的系统设计中，地铁源热泵系统的冷热负荷比范围在1：1.5至1：2之间。