一种复合型无霜空气源热泵系统性能分析

Performance analysis of frost-free air-source heat pump system integrated with liquid desiccant

从抑制结霜的角度出发，提出了该系统。分析了室外空气温度、相对湿度对系统性能的影响，并与采用电加湿的传统空气源热泵系统进行了对比。结果表明：室外空气相对湿度为79％时，随着室外空气温度从-4℃升高到5℃，系统性能系数COPs从2．2升高到4．1，与采用电加湿的传统空气源热泵相比，COIPs可提高24％～41％；相对湿度对COPs的影响不大，相对湿度在一定范围内增大时，COPs会略有增加；与传统空气源热泵相比，该系统在冬季湿冷地区应用具有较大的节能潜力。

From the perspective of preventing frosting, proposes a frost-free air-source heat pump （FFASHP） system using liquid desiccant. Investigates the effects of the outdoor air temperature and relative humidity（RH） on the performance of the system. Compares the performance of the FFASHP system with the conventional air-source heat pump （ASHP） system using electric humidification. The results show that when the outdoor air RH is 79%, with the outdoor air temperature increasing from - 4 ℃ to 5 ℃, COPs of the system increases from 2.2 to 4.1, which is 24% - 41% higher than that of the conventional ASHP system using electric humidification. The COP~ increases slightly with the outdoor air RH in a certain range. Compared with the conventional ASHP system, the FFASHP system will be more efficient in cold-moist regions in winter.