一种宽工况空气源热泵性能的实验研究

分析了喷气增焓系统、改进的翅片管以及喷液旁通对空气源热泵热工性能的影响,并进行额定制冷、制热、融霜以及低温制热的实验研究。实验结果表明:喷液增焓能够改善低温制热时的热工性能,制热量能够提高5%~15%;翅片管的改进能够延长结霜时间,缩短融霜时间;制冷时的喷液能够有效降低压缩机吸排气温度,对制冷量和功率的影响极小。3种技术的使用,改善了机组在恶劣工况下的热工性能。

Experimental Investigation on an New Air Source Heat Pump in Atrocious Working Condition

Analyzes the effects of three measures ：increasing enthalpy by replenish gas,a modified fin-tube heat exchange, liquid injection, on cooling ＆ heating performance of air source heat pump ,and carries out experiments to validate the application .The experiment results suggest that the heating capacity of air source heat pump unit may increase 5% ~ 15% by increasing enthalpy by replenish gas ,modified fin-tube heat exchange may improve performance at frost working condition, liquid injection may decrease discharge and suction temperature evidently with cooling capacity and EER changing insensitively.Application of three measures improve the performance at atrocious working condition.