Abstract:

The solid desiccant heat pump system (SDHP) can handle sensible and latent heat load simultaneously with high coefficient of performance (COP). However, the sensible heat load removal capacity of this system is relatively weak and the fluctuation of supply air temperature is large due to the frequent switch of the role of two desiccant coated heat exchangers (DCHE). In this study, the concept of semi-decoupled SDHP (SSDHP) system is proposed to overcome these disadvantages. In SSDHP system, the DCHE which acts as an evaporator operates in series with a conventional evaporator, and another DCHE functions as a condenser. Experiments are conducted to demonstrate the feasibility of this novel system under ARI humid condition to provide satisfied air. Results show that the comfortable supply air of 18.36℃ (max:19℃, min:18℃), 11.67 g/kg and the COP of 4.71 can be obtained. In addition, the influences of temperature and humidity ratio of fresh air on system performance are also analyzed.

摘要：

提出一种新型半解耦式除湿热泵系统，并对该系统在夏季工况下的降温除湿性能进行了测试。结果表明，该系统可实现对空气温湿度的高效处理：送风温湿度分别为18.36℃、11.67 g/kg，送风温度波动范围仅为1℃，系统COP高达4.71。此外，还对不同新风温湿度下的系统性能进行了实验研究。