中国不同气候地区商超制冷系统季节能效比分析  

Seasonal Energy Efficiency Ratio Analysis of Supermarket Refrigeration System in Different Climate Regions of China

作　　者：李佳美 孙志利 崔奇 王启帆 Li Jiamei;Sun Zhili;Cui Qi;Wang Qifan(Tianjin University of Commerce,Refrigeration Engineering Research Center of Ministry of Education of People's Republic of China,Tianjin Key laboratory of refrigeration technology,Tianjin Refrigeration Engineering Technology Center,Tianjin,300134,China)

机构地区：[1]天津商业大学冷冻冷藏技术教育部工程研究中心,天津市制冷技术重点实验室,天津市制冷技术工程中心,天津300134

出　　处：《冷藏技术》2019年第4期51-55,共5页Journal of Refrigeration Technology

摘　　要：选取中国五大气候区典型城市,分析不同气候条件下双级压缩商超制冷系统在使用R134a制冷剂和CO2制冷剂时的COP和季节能效比SEER。结果显示,相同条件下严寒地区及温和地区商超制冷系统的SEER较高且CO2系统性能明显低于R134a系统,但经过一定的结构优化,加入并行压缩机和单级蒸气压缩式部分复叠循环进行过冷的CO2系统在实际工况下的COP和SEER能够得到明显改善。改善效果对于气候条件较差地区最为明显,其中COP在环境温度为39℃时最大提高48.9%,SEER在夏热冬暖地区最大提高21.5%。改造后的CO2制冷系统基本达到与R134a系统相同的能效水平甚至更高,能够基本实现在不影响系统性能的条件下用CO2制冷剂替代R134a制冷剂。The typical cities of Chinese five major climate regions were selected to analyze the COP and SEER of the two-stage compression supermarket refrigeration system under different climatic conditions when using R134 a refrigerant and CO2 refrigerant.The results show that under the same conditions,the SEER of the supermarket refrigeration system in the severe cold region and the mild region is higher and the performance of the CO2 system is significantly lower than that of the R134 a system.But after a certain structural optimization,the CO2 system that is added to the parallel compressor and the single-stage vapor compression partial cascade cycle for supercooling can significantly improve the COP and SEER under actual working conditions.The improvement is most obvious in areas with poor climatic conditions,in which COP increases by 48.9%at an ambient temperature of 39℃,and SEER increases by 21.5%in hot summer and warm winter regions.The modified CO2 refrigeration system basically achieves the same energy efficiency level as the R134 a system,and can basically achieve the replacement of R134 a refrigerant with CO2 refrigerant without affecting system performance.

关 键 词：季节能效比 商超制冷 部分复叠 并行压缩 

分 类 号：TS205.7[轻工技术与工程—食品科学] TB61[轻工技术与工程—食品科学与工程]