期刊
SOLAR ENERGY
卷 170, 期 -, 页码 352-357出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2018.05.081
关键词
Solar assisted heat pump; Direct expansion; Experiments; Thermal performance
资金
- National Natural Science Foundation of China [51776115]
- Shandong Province Graduate Student Supervisor Guidance Ability Promotion Program [SDYY17037]
- Shandong University of Science and Technology Graduate Student Supervisor Guidance Ability Promotion Program [KDYC17009]
- Innovation Foundation for Graduate Students of Shandong University of Science and Technology [SDKDYC170331]
A variable capacity direct-expansion solar-assisted heat pump (DX-SAHP) system was studied experimentally under the meteorological condition of Qingdao located in the East China area. It was mainly made up of a solar collector/evaporator, a variable-frequency rotary-type hermetic compressor, a micro-channel condenser, and an electronic expansion valve. A series of experiments were carried out, in order to evaluate the performance of the DX-SAHP system during the autumn and winter period, including the system coefficient of performance (COP), the electric power to the compressor, the evaporating and condensing pressures, and the discharge temperature of the compressor. Experimental results showed that for the base case considered in this study, under the sunny and overcast day conditions in the autumn, the average COP was higher than 4.0 and 3.0, respectively. Even in the extreme weather of the winter conditions, the average COP was also higher than 2.5. In general, with the increase of water temperature, the compressor speed increased gradually, and the corresponding electric power of the compressor increased sharply. The condensing pressure also increases, as does the discharge temperature of the compressor, while the evaporating pressure remains a relatively low level with smaller variations.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据