Experimental investigation of an adjustable ejector for CO_2 heat pump water heaters

作     者：Guang-ming CHEN Li-xia LIANG Li-ming TANG Xiao-xiao XU Zhi-jiang ZHU Qi CHEN 

作者机构：State Key Laboratory of Clean Energy Utilization Institute of Refrigeration and Cryogenics Zhejiang University Hangzhou 310027 China 

基　　金：supported by the National Key Technologies R&D Program of China (No. 2006BAJ01A10) the Science and Technology Plan of Zhejiang Province (No. 2007C01002), China 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2009年第10卷第11期

页      码：1678-1682页

摘      要：An adjustable ejector expansion device for a CO2 heat pump water heater (HPWP) is proposed to improve the system performance. It has been designed to investigate experimentally the effects of the motive nozzle throat area of the ejector, entrained flow pressure, back pressure and primary flow pressure on the entrainment ratio. Experiments based on different motive nozzle throat areas were conducted and the results of the prototype ejector using CO2 as working fluid are presented. The results show that an adjustable ejector can achieve high performance and work well in a wide range of working conditions.

主 题 词：Adjustable elector System nerformance CO2 heat oumo water heater (HPWH) Entrainment ratio 

学科分类：081702[081702] 08[工学] 0817[工学-轻工类] 0822[工学-核工程类] 

核心收录：

D　O　I：10.1631/jzus.A0920116

馆 藏 号：203333257...