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Thermodynamic analysis of refrigerant selection for high temperature heat pump cycles.

Number: No 343

Author(s) : KAIDA T.

Summary

Industrial heat pump is recognized as one of decarbonization technologies in industry by a couple of its high efficiency and electrification with low carbon electricity. For expanding applications of heat pumps into various industrial heating processes, it is necessary to increase the supply temperature of heat pumps. Recently, some new refrigerants have been developed, which allows to increase the choice of refrigerants expected to be applied to higher temperature heat pumps. The purpose of this study is to illustrate working domain maps which can determine the promising refrigerant and the upper limit of heat pumping temperature lift for each supply temperature. First, with thermodynamic analysis for simple heat pump cycle, refrigerant selection in the wide range of the heat pump supply temperature from 60°C to 200°C is analyzed comprehensively for 17 pure refrigerants currently available on the market. Then, the effect of a high efficiency improvement by two-stage cycle with economizer are examined on the refrigerant selection.

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Pages: 10 p.

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Details

Original title: Thermodynamic analysis of refrigerant selection for high temperature heat pump cycles.
Record ID : 30030112
Languages: English
Subject: HFCs alternatives
Source: 13^th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
Publication date: 2021/08/31

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See other articles from the proceedings (198)
See the conference proceedings

Indexing

Themes: Industrial heat pumps;
HFO et HCFO;
CO2;
Water;
HFCs
Keywords: High temperature; Industrial application; Heat pump; R32; R134a; R245fa; Low GWP; R1224yd(Z); R1233zd(E); R1336mzz(Z); R718; R744; Natural refrigerant; Thermodynamic cycle