Techno-economic analysis of two-staged compression and cascade compression refrigeration system

doi:10.16085/j.issn.1000-6613.2015.08.046

Chemical Industry and Engineering Progree ›› 2015, Vol. 34 ›› Issue (08): 3194-3201.DOI: 10.16085/j.issn.1000-6613.2015.08.046

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Techno-economic analysis of two-staged compression and cascade compression refrigeration system

GUO Yaojun^1,2, XIE Jing^1,2, ZHU Shixin^1,2, WANG Jinfeng^1,2

1 College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China;
2 Shanghai Engineering Research Center of Aquatic Product Processing and Preservation, Shanghai 201306, China

Received:2015-03-11 Revised:2015-04-02 Online:2015-08-05 Published:2015-08-05

双级压缩与复叠式压缩制冷系统的技术经济分析

郭耀君^1,2, 谢晶^1,2, 朱世新^1,2, 王金锋^1,2

1 上海海洋大学食品学院, 上海 201306;
2 上海水产品加工与贮藏工程技术研究中心, 上海 201306

通讯作者: 谢晶,教授,博士,博士生导师,研究方向为食品工程。E-mail jxie@shou.edu.cn。
作者简介:郭耀君(1987—),男,硕士研究生,研究方向为制冷工程。E-mail 616885141@qq.com。
基金资助:
国家农业成果转化资金项目(2013GB2C000156)及上海市科委项目(13dz1203702)。

Abstract

Abstract: In order to choose a suitable method for ultra-low temperature refrigeration system from two-staged compression and cascade compression, the two refrigeration systems' technical characteristics were analyzed comparatively using theoretical calculations of two-stage and cascade refrigeration system. Both theoretical displacement and theoretical coefficient of the two systems were compared in the economic aspect. Results indicated that compared to two-stage system, compression ratio and exhaust temperature of cascade system were lower and suction pressure and cooling coefficient were higher. At condensing temperature 40℃ and evaporation temperature -65℃, the energy consumption reduction of cascade system can reach to 15.13%, indicating that the performance of cascade system could be better in the ultra-low temperature condition.

Key words: two-stage compression, cascade compression, thermodynamics, performance analysis, compressor

摘要： 为了探究双级压缩制冷系统与复叠式压缩制冷系统哪种更适合超低温制冷装置,通过对双级压缩系统和复叠式压缩制冷系统采用循环热力计算的方法,比较分析了双级压缩与复叠式压缩制冷系统的技术特性。同时从经济性的角度,对两种制冷方案的理论输气量、制冷系数、初投资、实际运行费用进行了对比分析。结果表明:在相同的工况下,复叠式系统的压缩比、排气温度和理论输气量均低于双级压缩系统,而复叠式系统的吸气压力和制冷系数高于双级压缩系统。在冷凝温度为40℃、蒸发温度为-65℃时,采用复叠压缩实际节能可达15.13%,即在超低温工况下复叠式系统更有前景。

关键词: 双级压缩, 复叠式压缩, 热力学, 性能分析, 压缩机

CLC Number:

TB61⁺5

GUO Yaojun, XIE Jing, ZHU Shixin, WANG Jinfeng. Techno-economic analysis of two-staged compression and cascade compression refrigeration system[J]. Chemical Industry and Engineering Progree, 2015, 34(08): 3194-3201.

郭耀君, 谢晶, 朱世新, 王金锋. 双级压缩与复叠式压缩制冷系统的技术经济分析[J]. 化工进展, 2015, 34(08): 3194-3201.

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Techno-economic analysis of two-staged compression and cascade compression refrigeration system

双级压缩与复叠式压缩制冷系统的技术经济分析

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