R507/R744复叠式制冷系统在水产品冷冻中的应用  

Application of R507/R744 Cascade Refrigeration System in the Freezing of Aquatic Products

作　　者：轩福臣 谢晶[1,2,3,4] 顾众 XUAN Fu-chen;XIE Jing;GU Zhon(Shanghai Engineering Research Center of Aquatic Product Processing&Preservation,Shanghai Ocean University,Shanghai 201306,China;Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation,Shanghai Ocean University,Shanghai 201306,China;National Experimental Teaching Demonstration Center for Food Science and Engineering,Shanghai Ocean University,Shanghai 201306,China;College of Food Science and Technology,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]上海海洋大学上海水产品加工及贮藏工程技术研究中心,上海201306 [2]上海海洋大学上海冷链装备性能与节能评价专业技术服务平台,上海201306 [3]上海海洋大学食品科学与工程国家级实验教学示范中心(上海海洋大学),上海201306 [4]上海海洋大学食品学院,上海201306

出　　处：《包装工程》2020年第13期173-178,共6页Packaging Engineering

基　　金：国家“十三五”重点研发项目(2018YFD0400605);上海市科委平台能力建设项目(19DZ2284000);上海市科委公共服务平台建设项目(17DZ2293400)。

摘　　要：目的研究25间-30℃水产品速冻库和4间-25℃的水产品低温冷藏库的方案及选型设计,找出最佳的制冷系统优化设计方案。方法基于CO2制冷剂绿色、高效、节能的优点,通过CO2压缩机并联技术,提出用于水产品冻结与冻藏的R507/R744复叠式制冷系统,并在蒸发温度为-30℃条件下,选用不同制冷剂,采用BITZER压缩机软件,研究计算不同系统的制冷效率(COP),并对不同制冷系统的COP、经济性进行分析。结果该系统相比R507制冷系统的COP提高了10%以上,该系统整体年运行电费平均比国内氨制冷系统节省了50%以上,并对这类工程应用中需要关注的安全问题提出了设置备用电机及主安全阀的解决方案。结论在水产品冷冻冷藏中,通过对不同制冷系统进行制冷效率和年耗电量的对比,得出选用R507/R744复叠式制冷系统,具有制冷效率更高,年耗电量更少的优点。The work aims to study the schemes and type selection design of 25 aquatic product quick-freezing warehouses at -30 ℃ and 4 aquatic product low-temperature refrigerators at -25 ℃, and find out the best refrigeration system optimization design scheme. Based on the advantages of CO2 refrigerant such as green, high efficiency and energy saving, R507/R744 cascade refrigeration system was proposed for the freezing and refrigeration of aquatic products with the CO2 compressor parallel technology. When the evaporation temperature was -30 ℃, different refrigerants were selected and the BITZER compressor software were used to study and calculate the refrigeration efficiency(COP) of different systems, and the COP and economy of different refrigeration systems were analyzed. Compared with R507 refrigeration system, the COP of the cascade system was increased by more than 10%. The average annual electricity cost of the cascade system as a whole was over 50% less than that of the domestic ammonia refrigeration system. At the same time, setting the backup motor and the main safety valve was put forward for the safety problems that needed to be emphasized in such engineering applications. In the aquatic product refrigeration, the comparison of cooling efficiency and annual power consumptions of different refrigeration systems indicate that, the R507/R744 cascade refrigeration system selected is featured by higher refrigeration efficiency and less annual power consumptions.

关 键 词：复叠式制冷 水产品 冷冻 自然工质 制冷效率 

分 类 号：TB66[一般工业技术—制冷工程] F762.6[经济管理—产业经济]