Experimental investigation on heating performance of a solution regenerator unit using freezing concentration for heat source tower heat pump system

被引：2
作者：
Han, Chong [1 ]
Chen, Xinzhuo [1 ]
Wu, Shangshu [1 ]
Ni, Long [1 ]
机构：
[1] Harbin Inst Technol, Sch Architecture & Design, Key Lab Cold Reg Urban & Rural Human Settlement En, Minist Ind & Informat Technol, Harbin 150090, Peoples R China
来源：
ENERGY AND BUILDINGS | 2024年 / 312卷
基金：
中国国家自然科学基金;
关键词：
Heat source tower heat pump; Freezing concentration; Heating performance; Heat utilization; Energy efficiency; LIQUID DESICCANT DEHUMIDIFICATION; FALLING-FILM;
D O I：
10.1016/j.enbuild.2024.114166
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Freezing concentration has a good energy efficiency during regeneration operation. Under the variational regeneration conditions, the icing and melting operation has direct influence on the overall system performance. In this study, a solution regenerator unit using freezing concentration with a heat pump system was built to test the heating performance and energy efficiency under varied concentrations and volumetric flow rates. Results showed that the energy efficiency was inversely proportional to the latent heat ratio. With the growth of ice layers, the influence of volumetric flow rates on heat capacity decreased. At the ice thickness was 0.6 cm, the heat capacity was consistent at all volumetric flow rates. Under the melting process, the effect of melting ratio on energy efficiency under the low concentration was more significant. The average effective utilization heat rate which concentration was 6 %, 8 %, 10 % and 13 % was 0.63, 0.67, 0.70, and 0.74, respectively. The relationship between the effective heat utilization and the distribution of the ice layer was studied. Results showed that the energy efficiency performance was directly proportional to average percentage slopes.
引用
收藏
页数：16
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