大功率二氧化碳热泵热水系统运行性能  

Investigation of operational performance of high power CO_2 heat pump hot water system

作　　者：罗会龙[1] 林辩启 杜培俭 杨晓川 马瑞芳[1] 向开根 

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500 [2]昆明东启科技股份有限公司,云南昆明650106

出　　处：《化工学报》2015年第6期2274-2279,共6页CIESC Journal

基　　金：国家自然科学基金项目(51166005);国家科技支撑计划项目(2012BAA13B02)~~

摘　　要：在小功率CO2热泵热水器的基础上设计与构建了一种大功率跨临界循环CO2热泵热水系统。在该跨临界循环CO2热泵热水系统中,采用二级冷却套管式CO2气体冷却器、双毛细管并联组合节流及设置回热器等技术途径,用以提高系统的热力性能。在恒温环境实验室中测试分析了气候参数及运行参数对跨临界循环CO2热泵热水系统稳态热力性能的影响。各种典型气候条件下系统日平均运行性能的测试结果表明,根据气候条件合理地选取运行参数,该系统具有优良的热力性能。系统的制热温度可在60~85℃选取,在环境温度为4.1~27.3℃的气候条件下日平均性能系数（COP）在3.45~4.04之间。A high power transcritical CO2 heat pump hot water system was designed and built on the basis of the existing low power water heater. In order to improve system efficiency, two-stage gas cooler, dual capillary tube combination throttle and internal heat exchanger were used in the CO2 heat pump hot water system. The effects of climatic and operational parameters on the steady state thermal performance of the CO2 heat pump hot water system were tested and analyzed in the constant temperature environmental chamber. Test results under typical climate conditions showed that system performance was excellent. The CO2 heat pump hot water system could provide 60—85℃ hot water according to climatic conditions, and its daily COP（coefficient of performance） was about 3.45—4.04 under the climatic conditions of ambient temperature at 4.1 to 27.3℃.

关 键 词：二氧化碳 测量 压缩机 热水系统 热性能 

分 类 号：TK114[动力工程及工程热物理—热能工程]