Effect of the discharge valve thickness and lift on the performance of the oil-free linear compressor in R134a refrigeration system

IF 3.8 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-09-27 DOI:10.1016/j.ijrefrig.2025.09.031

Jiale Ma , Xi Chen , Qun Wang

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引用次数: 0

Abstract

As the core component of the linear compressor, the discharge valve has a significant impact on its reliability and efficiency. Therefore, studying the influence of the key parameters of discharge valve on the linear compressor is indispensable for improving the compressor efficiency and refrigeration performance. A test system based on the laboratory's independently developed linear compressor for small refrigeration equipment was established to investigate the effects of the discharge valve thickness and lift on the volumetric efficiency, cooling capacity, and COP of the linear compressor. The transient pressure in the compression chamber was measured, and a piston stroke calculation model based on analyzing the compression chamber pressure was constructed. The dynamic characteristics of the discharge valve were analyzed using fluid-structure interaction, and its key parameters were optimized. The experimental and simulation results indicated that the volumetric efficiency and refrigeration performance with the discharge valve thickness of 0.1 mm, 0.2 mm and the discharge valve lift of 0.6 mm are the prime. This research provides valuable guidance for the optimal design of the small refrigeration linear compressor.

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排气阀厚度和扬程对R134a制冷系统无油线性压缩机性能的影响

排气阀作为线性压缩机的核心部件，对其可靠性和效率有着重要的影响。因此，研究排液阀关键参数对线性压缩机的影响，对于提高压缩机效率和制冷性能是必不可少的。建立了基于实验室自主研发的小型制冷设备线性压缩机的测试系统，研究了排气阀厚度和扬程对线性压缩机容积效率、制冷量和COP的影响。测量了压缩腔内的瞬态压力，建立了基于压缩腔压力分析的活塞行程计算模型。利用流固耦合分析了排液阀的动态特性，并对其关键参数进行了优化。实验和仿真结果表明，排气阀厚度为0.1 mm、0.2 mm和排气阀扬程为0.6 mm时，排气阀的容积效率和制冷性能最好。该研究为小型制冷线性压缩机的优化设计提供了有价值的指导。

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.