An evaluation of the performance of a scroll machine in a reversible high-temperature heat pump - organic Rankine cycle system using R1233zd(E) as the working fluid

IF 3.5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-10 DOI:10.1016/j.ijrefrig.2025.03.013

Rahul Velanparambil Ravindran, Donal Cotter, Christopher Wilson, Ming Jun Huang, Neil J Hewitt

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引用次数: 0

Abstract

A reversible high-temperature heat pump (HTHP) - Organic Rankine cycle (ORC) system can effectively recover industrial waste heat in the lower temperature band (<100 °C). This system can provide upgraded heat in HTHP mode or generate electrical power in ORC mode. For a compact reversible HTHP-ORC system, it is essential to utilise a volumetric machine that can function as both a compressor (HTHP mode) and an expander (ORC mode). This paper presents a performance analysis of an open-drive scroll machine operating in both modes, using R1233zd(E) as the working fluid. Steady-state models developed for this analysis were validated against data from previous experimental tests and subsequently used to evaluate the performance of the scroll compressor/expander under extended operating conditions. The model predictions indicated that the scroll compressor could achieve an overall isentropic efficiency of 73 % (T_sf,ev,in = 90 °C, N_cp = 2,000 RPM) and a volumetric efficiency of 92.3 % (T_sf,ev,in = 90 °C, N_cp = 2,500 RPM). In expander mode, the overall isentropic efficiencies were lower than in compressor mode, reaching a maximum value of 57.7 %. The results also demonstrated that the scroll machine could produce a gross power output of 1.01 kW (r_p = 3.6, T_sf,ev,in = 90 °C) at higher pressure ratios in expander mode.

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来源期刊

International Journal of Refrigeration-revue Internationale Du Froid 工程技术-工程：机械

CiteScore

7.30

自引率

12.80%

发文量

363

审稿时长

3.7 months

期刊介绍： The International Journal of Refrigeration is published for the International Institute of Refrigeration (IIR) by Elsevier. It is essential reading for all those wishing to keep abreast of research and industrial news in refrigeration, air conditioning and associated fields. This is particularly important in these times of rapid introduction of alternative refrigerants and the emergence of new technology. The journal has published special issues on alternative refrigerants and novel topics in the field of boiling, condensation, heat pumps, food refrigeration, carbon dioxide, ammonia, hydrocarbons, magnetic refrigeration at room temperature, sorptive cooling, phase change materials and slurries, ejector technology, compressors, and solar cooling. As well as original research papers the International Journal of Refrigeration also includes review articles, papers presented at IIR conferences, short reports and letters describing preliminary results and experimental details, and letters to the Editor on recent areas of discussion and controversy. Other features include forthcoming events, conference reports and book reviews. Papers are published in either English or French with the IIR news section in both languages.