A performance comparison of serial and parallel solar-assisted heat pump heating systems in Xi'an, China

被引：41

作者：

Huan, Chao ^{[1
,2
]}

Wang, Fenghao ^{[2
]}

Li, Shengteng ^{[1
,3
]}

Zhao, Yujiao ^{[1
,3
]}

Liu, Lang ^{[1
,3
]}

Wang, Zhihua ^{[2
]}

Ji, Changfa ^{[1
,3
]}

机构：

[1] Xian Univ Sci & Technol, Energy Sch, Xian 710054, Shaanxi, Peoples R China

[2] Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian, Shaanxi, Peoples R China

[3] Minist Educ China, Key Lab Western Mines & Hazards Prevent, Xian, Shaanxi, Peoples R China

来源：

ENERGY SCIENCE & ENGINEERING | 2019年 / 7卷 / 04期

基金：

中国国家自然科学基金;

关键词：

COP; solar energy; solar-assisted heat pump; TRNSYS; water heating system; DOMESTIC HOT-WATER; ENERGY; SIMULATIONS;

D O I：

10.1002/ese3.357

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this study, a TRNSYS model for a solar-assisted heat pump (SAHP) water heating system for a university bathroom in Xi'an was developed and validated through experimental measurements. Under the typical meteorological conditions in Xi'an, a comparative analysis of the performance of the serial indirect expansion SAHP (IDX-SAHP) system and the parallel IDX-SAHP system during different seasons was conducted using the validated model. The results demonstrated that for annual operation, the parallel IDX-SAHP system showed better performance in the Xi'an district compared to the serial system. Under the same heating load, the average coefficient of performance (COP) of the serial IDX-SAHP system was 3.23 and that of the parallel IDX-SAHP system was 4.34. In particular, during summer and the transition season, the parallel IDX-SAHP system showed large advantages, mainly owing to a larger part of the heating load being provided by the solar collector. However, the serial IDX-SAHP system showed a higher efficiency than that of the parallel IDX-SAHP system during winter conditions.

引用

页码：1379 / 1393

页数：15

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