二氧化碳热泵技术的发展及应用案例分析  

Developments and application analysis of carbon dioxide heat pump

作　　者：李慧[1] 曹祥[1] 张春路[1] 

机构地区：[1]同济大学机械与能源工程学院,上海201804

出　　处：《化工进展》2016年第B11期421-426,共6页Chemical Industry and Engineering Progress

摘　　要：CO_2跨临界热泵循环,其制冷剂工质为CO_2,不可燃,无毒,无刺激性气味,零臭氧层破坏能力(ODP=0)以及微乎其微的温室效应(GWP=1)而对环境无害,可从工业生产中回收,逐渐成为被广泛应用的热泵技术。本文从国内外CO_2热泵技术的研究现状及应用现状出发,总结概述了目前典型的CO_2热泵循环系统应用案例,如单级压缩供给加用热水系统、双级压缩带中间补气供给家用热水系统、家用供暖及供给热水于一体的双热泵单元家电辅热系统、大型公用建筑用CO_2热泵系统,并从系统层面对影响CO_2热泵循环系统效率的相关热力学参数进行循环分析,如水箱进出水温度、气冷器水流量、系统的制冷剂充注量等参数的控制。以期为未来CO_2热泵技术在中国的发展、进一步研究和应用设计提供一些参考和依据。Transcritical CO2 heat pump cycle becmes one of the popular heat pump technology which was used widely all over the world, for its natural refrigerant, CO2 has many advantages like low price, non-toxicity, non-flammability, environment friendliness and so on. In this study, we summarized some typical CO2 heat pump systems, such as one-stage system for heating water, two-stage compressor system with middle gas branch, space heating and water heater system with electrical heaer supply, and water-side reversible CO2 heat pump for residential application, which were in use and generalize the simulation research. Otherwise, we analysised the primary parameters that influences the system efficiency, such as the outlet temperature of the wate tank, the water mass flow rate of the gas cooler, the system refrigerants and so on. It could provide some worthy guidances for the design and development of carbon dioxide heat-pump system in China.

关 键 词：CO2跨临界循环 热泵技术 系统 

分 类 号：TK172[动力工程及工程热物理—热能工程]