Effect of refrigerant charge on the performance of a direct expansion solar assisted heat pump water heater using R410A

	Effect of refrigerant charge on the performance of a direct expansion solar assisted heat pump water heater using R410A
	Kong, Xiang-Qiang 1; Lin, Lin 1; Li, Ying 1; Zhang, Dong 2; Yang, Qian-Ming 1
刊名	Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University
	2013-03-01
卷号	47 期号:3 页码:370-375
关键词	Coefficient of performance Expansion Heat pump systems Hot water distribution systems Pumps Refrigerants Solar water heaters Water heaters Direct expansion Distributed parameter Electronic expansion valves Homogeneous flow model Lumped parameter models Performance simulation Refrigerant charge Solar assisted heat pump
ISSN号	10062467
英文摘要	Based on the distributed parameter and homogeneous flow models of solar collector/evaporator and condenser, the lumped parameter models of compressor and electronic expansion valve and the refrigerant charge model, a simulation program of a direct expansion solar assisted heat pump water heater (DX-SAHPWH) system using R410A was coded. For a fixed superheat degree at the collector outlet, the thermal performance parameters of the DX-SAHPWH system were obtained under different refrigerant charge conditions, and the effects of changing the refrigerant charge on the thermal performance of the system were analyzed. The results show that as the refrigerant charge increases, the evaporating pressure and heating time of the system decrease, but the instantaneous power of the compressor and the thermal efficiency of the collector increase. What's more, the influences of the refrigerant charge on the condensing pressure and coefficient of performance (COP) of the system are very small.
语种	中文
出版者	Shanghai Jiao Tong University, 2200 Xietu Rd no.25,, Shanghai, 200032, China
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113461]
专题	能源与动力工程学院
作者单位	1.College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China; 2.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Kong, Xiang-Qiang,Lin, Lin,Li, Ying,et al. Effect of refrigerant charge on the performance of a direct expansion solar assisted heat pump water heater using R410A[J]. Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University,2013,47(3):370-375.
APA	Kong, Xiang-Qiang,Lin, Lin,Li, Ying,Zhang, Dong,&Yang, Qian-Ming.(2013).Effect of refrigerant charge on the performance of a direct expansion solar assisted heat pump water heater using R410A.Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University,47(3),370-375.
MLA	Kong, Xiang-Qiang,et al."Effect of refrigerant charge on the performance of a direct expansion solar assisted heat pump water heater using R410A".Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University 47.3(2013):370-375.