Thermal performance evaluation and prediction of enhanced vapor injection air source heat pump

doi:10.3969/j.issn.0438-1157.2014.12.048

CORC > 兰州理工大学 > 兰州理工大学 > 新能源学院

	Thermal performance evaluation and prediction of enhanced vapor injection air source heat pump
	Zhang, Dong; Li, Jinping; Liu, Wei; Nan, Junhu; Wang, Linjun
刊名	Huagong Xuebao/CIESC Journal
	2014-12-01
卷号	65 期号:12 页码:5004-5009
关键词	Coefficient of performance Energy conservation Forecasting Mathematical models Pumps Temperature Average relative error Dry bulb temperature Electromagnetic valves Energy-saving effect Environmental temperature Experimental validations Thermal performance evaluations Vapor injection
ISSN号	04381157
DOI	10.3969/j.issn.0438-1157.2014.12.048
英文摘要	The enhanced vapor injection air source heat pump (EVI-ASHP) has better thermal performance at a low temperature, which has received much attention to supply hot water in cold region in recent years due to the growing space heating load and concern for environmental degradation. Environmental temperature is often below -5 in winter in cold region of China, and changes greatly throughout the year. Thus coefficient of performance (COP) under nominal working conditions (dry-bulb temperature of 7) is difficult to accurately reflect the actual energy-saving effect of the system. So, a set-up of EVI-ASHP system was built in Lanzhou, and thermal performance at different environmental temperatures and humidities was determined. COP of the EVI-ASHP system could reach above 6.5 when electromagnetic valve for vapor injection was off, and linear change of COP was observed. At a low temperature, when electromagnetic valve was on, COP was about 2.0. The fitting equations of the experimental data were obtained and verified, with average relative error below 3% compared with the experimental data from the set-up. An effective prediction method was established for thermal performance of the EVI-ASHP system at changeable environmental temperature and humidity, supplying a theoretical guidance for the application of the system in cold climate. ©, 2014, Chemical Industry Press. All right reserved.
语种	中文
出版者	Chemical Industry Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113050]
专题	新能源学院能源与动力工程学院机电工程学院
作者单位	Western China Energy and Environment Research Center, Lanzhou University of Technology, Lanzhou ; Gansu; 730050, China
推荐引用方式 GB/T 7714	Zhang, Dong,Li, Jinping,Liu, Wei,et al. Thermal performance evaluation and prediction of enhanced vapor injection air source heat pump[J]. Huagong Xuebao/CIESC Journal,2014,65(12):5004-5009.
APA	Zhang, Dong,Li, Jinping,Liu, Wei,Nan, Junhu,&Wang, Linjun.(2014).Thermal performance evaluation and prediction of enhanced vapor injection air source heat pump.Huagong Xuebao/CIESC Journal,65(12),5004-5009.
MLA	Zhang, Dong,et al."Thermal performance evaluation and prediction of enhanced vapor injection air source heat pump".Huagong Xuebao/CIESC Journal 65.12(2014):5004-5009.