空气源热泵集群式布置的采暖系统中冷岛效应的产生机理及控制措施

The generating mechanism and controlling measures of Cold Island Effect in Clustered Air-Source Heat Pump Heating System

空气源热泵常规集群式布置时,由于空气的反复循环,致使中间位置的机组周边温度越来越低,形成冷岛。冷岛使机组提前进入低温工况,制热性能降低。使用CFD(Computational Fluid Dynamics)软件模拟分析了冷岛效应产生的机理,提出了削弱冷岛效应的控制措施。

Outdoor temperature is one of the important factors affecting the performance of Air-Source Heat Pump. In the conventional cluster arrangement, due to the repeated circulation of air, the ambient temperature of the unit at the intermediate position is getting lower and lower, forming a cold island. The cold island causes the unit to enter the low temperature condition in advance, and the heating performance is reduced. The mechanism of cold island effect generation was simulated by CFD(Computational Fluid Dynamics) software, and the controlling measures of weakening the cold island effect was proposed.