{"title":"寒冷地区电动汽车用 R290 蒸汽喷射热泵系统的性能分析","authors":"YunChun Yang, WenCong Shao, TianYang Yang, HuiMing Zou, ChangQing Tian","doi":"10.1007/s11431-024-2649-3","DOIUrl":null,"url":null,"abstract":"<p>High-performance automotive thermal management systems with environment-friendly refrigerants are essential for achieving carbon peaking and carbon neutrality goals. In this study, an R290 vapor-injection heat pump system for electric vehicles is developed and experimentally investigated. The effects of refrigerant charge mass, injection pressure, and in-cabin air temperature are analyzed in ambient temperatures from −30°C to 0°C. The results show that the vapor-injection system can increase the coefficient of performance (COP) and heating capacity by 14.3% and 15.9% at 0°C/20°C (ambient/in-cabin temperature) compared with the basic system, and this increase becomes more significant at −20°C/20°C with improvements of 32.5% and 38.1%, respectively. At a lower ambient temperature of −20°C, increasing refrigerant charge mass contributes to a more pronounced increase in heating capacity than at 0°C, which results from the more significant increase in injection mass flow. The optimal COP at various injection pressures are 2.07 and 1.63 at 0°C and −20°C ambient temperatures, corresponding to the relative injection pressures of 0.60 and 0.57, and the injection flow ratios of 0.23 and 0.29, respectively. At −30°C/0°C, a COP of 1.69 can be achieved.</p>","PeriodicalId":21612,"journal":{"name":"Science China Technological Sciences","volume":null,"pages":null},"PeriodicalIF":4.4000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Performance analysis of an R290 vapor-injection heat pump system for electric vehicles in cold regions\",\"authors\":\"YunChun Yang, WenCong Shao, TianYang Yang, HuiMing Zou, ChangQing Tian\",\"doi\":\"10.1007/s11431-024-2649-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>High-performance automotive thermal management systems with environment-friendly refrigerants are essential for achieving carbon peaking and carbon neutrality goals. In this study, an R290 vapor-injection heat pump system for electric vehicles is developed and experimentally investigated. The effects of refrigerant charge mass, injection pressure, and in-cabin air temperature are analyzed in ambient temperatures from −30°C to 0°C. The results show that the vapor-injection system can increase the coefficient of performance (COP) and heating capacity by 14.3% and 15.9% at 0°C/20°C (ambient/in-cabin temperature) compared with the basic system, and this increase becomes more significant at −20°C/20°C with improvements of 32.5% and 38.1%, respectively. At a lower ambient temperature of −20°C, increasing refrigerant charge mass contributes to a more pronounced increase in heating capacity than at 0°C, which results from the more significant increase in injection mass flow. The optimal COP at various injection pressures are 2.07 and 1.63 at 0°C and −20°C ambient temperatures, corresponding to the relative injection pressures of 0.60 and 0.57, and the injection flow ratios of 0.23 and 0.29, respectively. At −30°C/0°C, a COP of 1.69 can be achieved.</p>\",\"PeriodicalId\":21612,\"journal\":{\"name\":\"Science China Technological Sciences\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Science China Technological Sciences\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1007/s11431-024-2649-3\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science China Technological Sciences","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s11431-024-2649-3","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
Performance analysis of an R290 vapor-injection heat pump system for electric vehicles in cold regions
High-performance automotive thermal management systems with environment-friendly refrigerants are essential for achieving carbon peaking and carbon neutrality goals. In this study, an R290 vapor-injection heat pump system for electric vehicles is developed and experimentally investigated. The effects of refrigerant charge mass, injection pressure, and in-cabin air temperature are analyzed in ambient temperatures from −30°C to 0°C. The results show that the vapor-injection system can increase the coefficient of performance (COP) and heating capacity by 14.3% and 15.9% at 0°C/20°C (ambient/in-cabin temperature) compared with the basic system, and this increase becomes more significant at −20°C/20°C with improvements of 32.5% and 38.1%, respectively. At a lower ambient temperature of −20°C, increasing refrigerant charge mass contributes to a more pronounced increase in heating capacity than at 0°C, which results from the more significant increase in injection mass flow. The optimal COP at various injection pressures are 2.07 and 1.63 at 0°C and −20°C ambient temperatures, corresponding to the relative injection pressures of 0.60 and 0.57, and the injection flow ratios of 0.23 and 0.29, respectively. At −30°C/0°C, a COP of 1.69 can be achieved.
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Science China Technological Sciences, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research.
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