Junhong Wu , Guangqian Peng , Songlin Cui , Wang Zeng , Junlong Xie , Xi Pan
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Experimental validation is conducted to verify the calculated results and compare the performance of three compressor prototypes: basic prototype having a cylindrical discharge port and a 2.5 mm DVP lift; Prototype I having a conical discharge port and a 2.5 mm DVP lift; and Prototype II having a conical discharge port and a 2 mm DVP lift. The errors between the calculated and experimental values for cooling capacity, input power, and COP are within 3 %, 2 %, and 4 %, respectively, demonstrating the high accuracy of the developed mathematical model. Furthermore, the comparative analysis reveals that prototype II, equipped with a conical discharge port and a 2 mm DVP lift, exhibits superior performance among these three prototypes.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"176 ","pages":"Pages 386-395"},"PeriodicalIF":3.5000,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigation on the discharge port and discharge valve lift in the R32 rotary compressor for performance improvement\",\"authors\":\"Junhong Wu , Guangqian Peng , Songlin Cui , Wang Zeng , Junlong Xie , Xi Pan\",\"doi\":\"10.1016/j.ijrefrig.2025.05.009\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The performance of the rotary compressor is critical to the efficiency of air conditioning systems. Cooling capacity, input power and coefficient of performance (COP) are three key indicators used to evaluate the performance of rotary compressors. The discharge area, determined by the discharge port diameter and discharge valve plate (DVP) displacement, significantly influences these three indicators. This paper introduces a conical discharge port aimed at increasing the discharge port perimeter, along with an optimized design of DVP lift, which primarily affects DVP displacement. A mathematical model is developed to investigate the impact of the discharge port and DVP lift on the aforementioned performance indicators. Experimental validation is conducted to verify the calculated results and compare the performance of three compressor prototypes: basic prototype having a cylindrical discharge port and a 2.5 mm DVP lift; Prototype I having a conical discharge port and a 2.5 mm DVP lift; and Prototype II having a conical discharge port and a 2 mm DVP lift. The errors between the calculated and experimental values for cooling capacity, input power, and COP are within 3 %, 2 %, and 4 %, respectively, demonstrating the high accuracy of the developed mathematical model. 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引用次数: 0
摘要
旋转压缩机的性能对空调系统的效率起着至关重要的作用。制冷量、输入功率和性能系数(COP)是评价旋转压缩机性能的三个关键指标。由排出口直径和排出阀板(DVP)位移决定的排出面积对这三个指标有显著影响。本文介绍了一种旨在增加排油口周长的锥形排油口,并对影响DVP排量的主要因素DVP举升进行了优化设计。建立了一个数学模型来研究出料口和DVP升力对上述性能指标的影响。进行了实验验证,验证了计算结果,并比较了三种样机的性能:具有圆柱形排气口和2.5 mm DVP升程的基本样机;原型I具有锥形出料口和2.5 mm DVP升力;原型II具有锥形排料口和2mm DVP升力。制冷量、输入功率和COP的计算值与实验值的误差分别在3%、2%和4%以内,表明所建立的数学模型具有较高的精度。对比分析表明,采用锥形排料口和2 mm DVP举升的II型样机在三种样机中性能更优。
Investigation on the discharge port and discharge valve lift in the R32 rotary compressor for performance improvement
The performance of the rotary compressor is critical to the efficiency of air conditioning systems. Cooling capacity, input power and coefficient of performance (COP) are three key indicators used to evaluate the performance of rotary compressors. The discharge area, determined by the discharge port diameter and discharge valve plate (DVP) displacement, significantly influences these three indicators. This paper introduces a conical discharge port aimed at increasing the discharge port perimeter, along with an optimized design of DVP lift, which primarily affects DVP displacement. A mathematical model is developed to investigate the impact of the discharge port and DVP lift on the aforementioned performance indicators. Experimental validation is conducted to verify the calculated results and compare the performance of three compressor prototypes: basic prototype having a cylindrical discharge port and a 2.5 mm DVP lift; Prototype I having a conical discharge port and a 2.5 mm DVP lift; and Prototype II having a conical discharge port and a 2 mm DVP lift. The errors between the calculated and experimental values for cooling capacity, input power, and COP are within 3 %, 2 %, and 4 %, respectively, demonstrating the high accuracy of the developed mathematical model. Furthermore, the comparative analysis reveals that prototype II, equipped with a conical discharge port and a 2 mm DVP lift, exhibits superior performance among these three prototypes.
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.