大型压缩式高温热泵技术研究及应用进展

A Review of Large-Scale Vapor Compression High Temperature Heat Pump Research and Application

压缩式高温热泵是应用广泛的节能环保技术,尤其是大型热泵机组,近年来随着能源结构调整和环境保护要求的不断提高而日益受到重视。本文分析了大型压缩式高温热泵的特点和必要性,并从该项技术的两个方面,即热力循环和高温工质,分别阐述了近年来大型压缩式高温热泵的研究现状,指出各类优化常规循环及低GWP的HFC及HFO类替代高温工质是今后一段时间该项技术研究和应用的重点方向,而变温循环和非共沸高温混合工质则具有良好的发展前景,需要进一步深入。此外简述了研究机构和设备制造商在大型压缩式高温热泵应用方面所取得的进展。

Vapor compression high temperature heat pump (VCHTHP), which is an environmental friendly and energy conservation technology, is widely applied, especially the large-scale sets. In this ar-ticle, the characteristics and necessity of large-scale VCHTHP were elaborated, and the research progress was reviewed and analyzed in terms of thermodynamic cycles and alternative refrige-rants. It demonstrated that modified regular cycles and low GWP HFC &HFOs alternatives are the key parts for recent research and application of Large-scale VCHTHP, and the irreversible Lorenz cycle and non-azeotropic refrigerants have good prospects. At last, some application cases were also reviewed.