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本文对带膨胀机CO2热泵跨临界循环的原理做了简单介绍,主要概述了国内外带膨胀机CO2跨临界循环热泵系统的配置和关键部件的研究开发状况,同时指出了带膨胀机CO2跨临界循环热泵研究过程的难点以及以后的研究方向。
In this paper, the principle of transcritical cycle of CO2 heat pump with expander is briefly introduced. The configuration of CO2 transcritical cycle heat pump system with internal expander and the research and development of key components are expounded. Meanwhile, The difficulties in the research of circulating heat pump and its future research direction.