Experimental results on a chiller using a CO2-DME mixture

IF 3.5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2024-10-05 DOI:10.1016/j.ijrefrig.2024.10.002

G. Vaccaro , A. Milazzo , P. Tobaly , A.T. Diaby , L. Talluri

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引用次数: 0

Abstract

CO₂-DME (Carbon Dioxide-Dimethyl Ether) mixtures raised our interest in the last year as they promise to increase the COP with respect to pure CO₂ while maintaining GWP = 1. The mixture can be non-flammable, as far as the percentage of DME is low. This study presents experimental findings obtained from a chiller system utilizing CO₂-DME mixtures as the working fluid. The experimental investigation aims to analyse the performance and behaviour of the chiller under varying operating conditions. Key parameters, such as coefficient of performance, cooling capacity, and thermodynamic behaviour are examined to assess the suitability and efficacy of the CO₂-DME mixture in chiller applications. The experimental results shed light on the thermodynamic characteristics and operational considerations of the chiller system, providing valuable insights into the potential of CO₂-DME mixtures for environmentally friendly, safe and energy-efficient cooling technologies. The experimental findings indicate a maximum increase in COP of 15 % for a mixture comprising 10 % DME, with a condensation temperature of 35 °C. Furthermore, the cooling capacity is reduced only by 7 % in the worst case.

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使用二氧化碳-二甲醚混合物的冷却器的实验结果

二氧化碳-二甲醚（CO2-DME）混合物在去年引起了我们的兴趣，因为与纯二氧化碳相比，它们有望提高 COP，同时保持 GWP = 1。只要二甲醚的比例较低，这种混合物就不易燃。本研究介绍了使用二氧化碳-二甲醚混合物作为工作流体的冷却系统的实验结果。实验调查旨在分析冷却器在不同运行条件下的性能和表现。研究了性能系数、冷却能力和热力学行为等关键参数，以评估二氧化碳-二甲醚混合物在冷却器应用中的适用性和有效性。实验结果揭示了冷风机系统的热力学特性和运行注意事项，为了解二氧化碳-二甲醚混合物在环保、安全和节能冷却技术方面的潜力提供了宝贵的见解。实验结果表明，二甲醚含量为 10%、冷凝温度为 35 °C 的混合物的 COP 最大增幅为 15%。此外，在最糟糕的情况下，冷却能力只降低了 7%。

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.