制冷技术2024，Vol.44Issue(2)：30-37,8.DOI:10.3969/j.issn.2095-4468.2024.02.105
船用自复叠制冷系统与双级压缩制冷系统热力性能对比研究
Comparative Study on Thermal Performance of Marine Self-cascading Refrigeration System and Two-stage Compression Refrigeration System
摘要
Abstract
The process simulation calculation method is used to study the thermodynamic performance of the self cascading refrigeration system of the mixed refrigerant and the two-stage compression refrigeration system of the traditional refrigerant.The suction and exhaust pressure,system coefficient of performance(COP)and so on of the two systems are analyzed under the target refrigeration temperature zone of-65℃.The results showed that,for the target cooling temperature of-65℃,when R14/R23/R134a/R245fa(0.35/0.36/0.10/0.19)is selected as the mixed refrigerant,the COP could reach 1.037,the suction and exhaust pressure the are 740 kPa and 1 590 kPa,the pressure ratio is less than 3,and the exhaust temperature is only 61℃,and the working condition parameters are excellent.By adjusting the intermediate pressure of two-stage compression,the optimal operating condition of the system is obtained.It is found that the COP of the self-cascading refrigeration system is 7.32%lower than that of the traditional R22 refrigeration system,27.15%and 5%higher than that of the R404A and R407C systems,respectively.关键词
自复叠制冷系统/双级压缩制冷系统/混合制冷剂/性能系数Key words
Self-cascading refrigeration system/Two stage compression refrigeration system/Mixed refrigerant/Coefficient of performance分类
通用工业技术引用本文复制引用
杨志强,丁智,王灵..船用自复叠制冷系统与双级压缩制冷系统热力性能对比研究[J].制冷技术,2024,44(2):30-37,8.基金项目
上海市青年科技英才扬帆计划(No.21YF1451400),中国船舶集团自立科技研发专项(No.202204Z),工信部高技术船舶科研项目(No.CBG3N21-3-1). （No.21YF1451400）
