RE170 (Dimethyl Ether) and ternary mixtures (R744 / RE170 / R600) as alternatives to R290 for refrigeration and heat pump applications

IF 3.5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-05-05 DOI:10.1016/j.ijrefrig.2025.05.005

Daniel Calleja-Anta, Manel Martínez-Ángeles, Rodrigo Llopis

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引用次数: 0

Abstract

This study explores the potential of dimethyl ether (RE170) and ternary mixtures (R744/RE170/R600) as alternatives to R290 in refrigeration and heat pump applications. A thermodynamic analysis using Refprop v.10 was conducted to determine optimal compositions, followed by an experimental evaluation in a single-stage vapor compression cycle with a variable speed compressor. Results indicate that RE170 and its mixtures provide superior energy efficiency compared to R290, with maximum COP improvements of 29.8 % (refrigeration) and 17.99 % (heat pump), albeit with reduced cooling and heating capacities. Experimental tests show that RE170 is the best candidate for substitution, as it avoids temperature glide and maintains higher heat transfer coefficients. These findings suggest that RE170 and its optimized mixtures could enhance system efficiency, provided adequate system modifications are implemented.

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RE170（二甲醚）和三元混合物（R744 / RE170 / R600）作为R290的替代品，用于制冷和热泵应用

本研究探讨了二甲醚（RE170）和三元混合物（R744/RE170/R600）在制冷和热泵应用中作为R290替代品的潜力。使用Refprop v.10进行热力学分析以确定最佳成分，然后在变速压缩机的单级蒸汽压缩循环中进行实验评估。结果表明，与R290相比，RE170及其混合物提供了更好的能源效率，最大COP提高了29.8%（制冷）和17.99%（热泵），尽管制冷和制热能力有所降低。实验结果表明，RE170可以避免温度滑动并保持较高的换热系数，是替代的最佳候选材料。这些结果表明，只要对系统进行适当的修改，RE170及其优化混合物可以提高系统效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.