Performance Study on R600a/CO<sub>2</sub> Auto-Cascade Refrigerating Cycle with One-Step Dephlegmation and Two-Step Dephlegmation

颜俊; 任挪颖; 钱伟; 晏刚; 厉彦忠

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Performance Study on R600a/CO₂ Auto-Cascade Refrigerating Cycle with One-Step Dephlegmation and Two-Step Dephlegmation

更新时间：2025-12-08

- Performance Study on R600a/CO₂ Auto-Cascade Refrigerating Cycle with One-Step Dephlegmation and Two-Step Dephlegmation
- Vol. 41, Issue 3, Pages: 321-325(2007)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB657.4
- Online First：10 March 2007，
  
  Published：2007
- 稿件说明：
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颜俊, 任挪颖, 钱伟, et al. Performance Study on R600a/CO₂ Auto-Cascade Refrigerating Cycle with One-Step Dephlegmation and Two-Step Dephlegmation[J]. 2007, 41(3): 321-325.
DOI：

颜俊, 任挪颖, 钱伟, et al. Performance Study on R600a/CO₂ Auto-Cascade Refrigerating Cycle with One-Step Dephlegmation and Two-Step Dephlegmation[J]. 2007, 41(3): 321-325. DOI：

摘要

基于天然工质应用于自复叠制冷循环的研究

对一级分凝和二级分凝自复叠制冷循环进行了理论分析

讨论了使用天然工质R600a/CO

作为非共沸制冷剂时制冷剂的配比、冷凝温度、蒸发温度和冷凝蒸发器冷凝侧出口过冷度对2种循环系统性能的影响.结果表明:2种循环均存在最佳的制冷剂配比

其中二级分凝循环还存在最佳中间温度; 在一定的冷凝温度和蒸发温度下

二级分凝自复叠制冷循环与一级分凝自复叠制冷循环相比

性能系数大

单位质量制冷量大

压力比高; 随着冷凝温度和蒸发温度的升高

二级分凝循环的性能系数提高得更多.

Abstract

Theoretical analyses on auto-cascade refrigerating cycle with one-step dephlegmation and two-step dephlegmation were performed to discuss the influence of composition

evaporating temperature

condensing temperature and supercooling on the system performance when using non-azeotropic mixture refrigerant R600a/CO2. The results show that each cycle has an optimal mixture composition ratio of the mixture refrigerant

and an optimal middle temperature exists in two-step dephlegmation cycle. Moreover

at the certain evaporating temperature and condensing temperature

coefficient of performance

refrigerating output by unit mass refrigerant and compression ratio of two-step dephlegmation cycle are greater than those of one-step dephlegmation cycle. When evaporating temperature and condensing temperature increase

the difference of performance between two-step dephlegmation cycle and one-step dephlegmation cycle is greater.

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references

Lorentzen G.Revival of carbon dioxide as a refrigerant[J].Int J Refrig,1994,17(4):292-301.

Klocker K,Schmidt E L,Steimle F.Carbon dioxide as a working fluid in a drying heat pumps [J]. Int J Refrig, 2001, 24(1):15-24.

宋世亮.天然工质应用于自行复叠制冷系统的研究[D].杭州:浙江大学机械与能源工程学院,2005.

孙爱国.天然工质自行复叠制冷循环研究[D].杭州:浙江大学机械与能源工程学院,2004.

顾兆林,刘红娟,李云.NH3/CO2低温制冷系统研究[J].西安交通大学学报,2002,36(5):536-540.

Gu Zhaolin, Liu Hongjuan, Li Yun. Performance of ammonia/carbon dioxide low temperature refrigeration system[J]. Journal of Xi'an Jiaotong University, 2002, 36(5):536-540.

吴业正.制冷与低温技术原理[M].北京:高等教育出版社,2004.

张祉NFCCC.制冷原理与设备[M].北京:机械工业出版社,1987.

宁静红,马一太,李敏霞.CO2低温制冷循环热力学分析[J].制冷与空调,2005,5(6):33-35.

Ning Jinghong, Ma Yitai, Li Minxia. Thermodynamic analysis of CO2 low temperature refrigeration cycle [J]. Refrigeration and Air-Conditioning, 2005, 5(6):33-35.

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Performance Study on R600a/CO2 Auto-Cascade Refrigerating Cycle with One-Step Dephlegmation and Two-Step Dephlegmation

DOI：

摘要

Abstract

关键词

Keywords

references

Performance Study on R600a/CO₂ Auto-Cascade Refrigerating Cycle with One-Step Dephlegmation and Two-Step Dephlegmation