Abstract
The surface of an outdoor evaporator can easily frost when an air-source heat pump is used for heating during winter. The most common defrosting method, reverse-cycle defrosting, has safety risk and long defrosting period. To improve the performance of an air-source heat pump system with reverse-cycle defrosting, a defrosting system consisting of an air-source heat pump coupled with a liquid storage gas-liquid separator is proposed in this paper. Compared with traditional air-source heat pump systems, this system can effectively delay frosting and shorten defrosting period. In this study, the thermodynamic performances of an air-source heat pump system and a traditional air-source heat pump system under six working conditions were studied experimentally. The experimental results show that the system can effectively delay frosting and shorten the defrosting period in a heating-defrosting-recovery cycle; the maximum defrosting period can be delayed by 53 min, and the maximum defrosting time can be shortened by 75 s.
| Translated title of the contribution | Research on Defrosting System of Air-source Heat Pump with Liquid Storage Gas-liquid Separator |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 23-32 |
| Number of pages | 10 |
| Journal | Journal of Refrigeration |
| Volume | 43 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1 Apr 2022 |