Study of optimizing the secondary cylinder size in a novel dual-piston carbon dioxide linear compressor to suppress piston offset

IF 3.5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-31 DOI:10.1016/j.ijrefrig.2025.03.046

Fanchen Kong , Shanquan Liu , Fang Wang , Shuo Zhang , Guifang Wu , Zhouhang Hu , Mingsheng Tang , Huiming Zou , Changqing Tian

{"title":"Study of optimizing the secondary cylinder size in a novel dual-piston carbon dioxide linear compressor to suppress piston offset","authors":"Fanchen Kong , Shanquan Liu , Fang Wang , Shuo Zhang , Guifang Wu , Zhouhang Hu , Mingsheng Tang , Huiming Zou , Changqing Tian","doi":"10.1016/j.ijrefrig.2025.03.046","DOIUrl":null,"url":null,"abstract":"<div><div>Based on a previously proposed novel dual-piston two-stage carbon dioxide (CO<sub>2</sub>) linear compressor, this research aims to further inhibit the piston offset and improve overall system performance and efficiency by purposefully exploring the optimal design of the two-stage cylinder diameter. A comprehensive simulation model is developed to analyse the dynamic characteristics and performance implications associated with varying cylinder diameters in the two-stage configuration. The study explores the influence of cylinder diameter on gas forces, piston offset, and compression process leakage. The results show that through the optimized design of the two-stage cylinder diameter, the piston offset can be reduced by >50 % and the relative leakage loss can be reduced by 2.22 %. Under 12 MPa discharge pressure, a relative efficiency improvement of 5.27 % can be achieved. The optimal compressor efficiency is achieved between intermediate pressure index 4 and 5. This result provides valuable guidance for the design of the second-stage piston. Finally, a prototype was developed according to the design principle, and its piston offset suppression effect was validated experimentally. Under a pressure difference close to 0.7 MPa, the piston offset consistently remained below 0.2 mm.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"175 ","pages":"Pages 146-155"},"PeriodicalIF":3.5000,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Refrigeration-revue Internationale Du Froid","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0140700725001380","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Based on a previously proposed novel dual-piston two-stage carbon dioxide (CO₂) linear compressor, this research aims to further inhibit the piston offset and improve overall system performance and efficiency by purposefully exploring the optimal design of the two-stage cylinder diameter. A comprehensive simulation model is developed to analyse the dynamic characteristics and performance implications associated with varying cylinder diameters in the two-stage configuration. The study explores the influence of cylinder diameter on gas forces, piston offset, and compression process leakage. The results show that through the optimized design of the two-stage cylinder diameter, the piston offset can be reduced by >50 % and the relative leakage loss can be reduced by 2.22 %. Under 12 MPa discharge pressure, a relative efficiency improvement of 5.27 % can be achieved. The optimal compressor efficiency is achieved between intermediate pressure index 4 and 5. This result provides valuable guidance for the design of the second-stage piston. Finally, a prototype was developed according to the design principle, and its piston offset suppression effect was validated experimentally. Under a pressure difference close to 0.7 MPa, the piston offset consistently remained below 0.2 mm.

查看原文本刊更多论文

优化新型双活塞二氧化碳直线压缩机副缸尺寸以抑制活塞偏置的研究

基于已有的新型双活塞两级二氧化碳（CO2）线性压缩机，本研究旨在通过有针对性地探索两级气缸直径的优化设计，进一步抑制活塞偏置，提高系统整体性能和效率。开发了一个全面的仿真模型来分析与两级配置中不同圆柱体直径相关的动态特性和性能影响。研究了气缸直径对气体力、活塞偏置和压缩过程泄漏的影响。结果表明：通过对两级缸径的优化设计，活塞偏移量可减小50%，相对泄漏损失可减小2.22%；在12 MPa排放压力下，相对效率提高5.27%。压缩机效率在中间压力指数4 ~ 5之间达到最佳。该结果为二级活塞的设计提供了有价值的指导。最后，根据设计原理研制了样机，并对其活塞偏置抑制效果进行了实验验证。在压力差接近0.7 MPa时，活塞偏置始终保持在0.2 mm以下。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.