CIESC Journal ›› 2016, Vol. 67 ›› Issue (S2): 304-310.DOI: 10.11949/j.issn.0438-1157.20161407

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Simulations and experiments of substitution of R41 for R23 in auto-cascade refrigeration cycle with rectifying column at -60℃

SONG Qi1, LE Shengjian1, LÜ Dongjie1, WANG Hui1, XU Xiangguo1, WANG Qin1, GUO Zhikai2   

  1. 1. Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province, Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, Zhejiang, China;
    2. Zhejiang Lantian Environmental Protection Hi-Tech Co. Ltd., Hangzhou 310023, Zhejiang, China
  • Received:2016-10-08 Revised:2016-10-18 Online:2016-12-30 Published:2016-12-30
  • Supported by:

    supported by the Project of National Key Research and Development Program of China (2016YFB0901404) and the Research Project of Manufacturing Industrial Ozone Depleting Substance Substitution Technology of Chinese Ministry of Environmental Protection (C/Ⅲ/S/13/515)).

-60℃温区精馏型自复叠制冷系统R41替代R23的理论与实验

宋琦1, 乐生健1, 吕东杰1, 王辉1, 徐象国1, 王勤1, 郭智恺2   

  1. 1. 浙江大学制冷与低温研究所, 浙江省制冷与低温技术重点实验室, 浙江 杭州 310027;
    2. 浙江蓝天环保高科技股份有限公司, 浙江 杭州 310023
  • 通讯作者: 王勤
  • 基金资助:

    国家重点研发计划项目课题(2016YFB0901404);环保部生产行业消耗臭氧层物质替代技术研发项目(C/Ⅲ/S/13/515)。

Abstract:

R41 was selected to substitute for R23 in an auto-cascade refrigeration cycle with a rectifying column at-60℃.Performance comparisons and analyses were conducted when R1234ze(E) was selected as the less volatile component.An experimental apparatus was designed and established to compare the performances of R23/R1234ze(E) and R41/R1234ze(E) in the system.Both theoretical and experimental results showed that when adopting R1234ze(E) as the less volatile component,COP values decreased slightly and the compression work per unit volume decreased by 1/3-1/2 after the substitution of R41 for R23.Besides,the refrigeration capacity per unit volume also decreased slightly,but the refrigeration capacity per unit mass showed an obvious increase,which would result in significant refrigerant charge reduction.More importantly,the reduction in GWP of R41 would bring obvious environmental protection effect.

Key words: binary mixture, rectifying column, auto-cascade, R23, R41, environment, numerical analysis

摘要:

选取R1234ze(E)作为高沸点组分,对R41在-60℃温区二元精馏型自复叠制冷循环中替代R23进行循环性能对比分析。设计并搭建采用精馏型自复叠制冷循环的实验装置,对R23/R1234ze(E)和R41/R1234ze(E)混合制冷剂在系统中的循环性能进行实验对比。理论分析和实验结果均表明:以R1234ze(E)作为高沸点组分时,用R41替代R23后系统COP略有下降,单位体积压缩功减小1/3~1/2,单位容积制冷量稍有降低,但系统单位质量制冷量明显提高,可以大大减小充注量。更重要的是R41的GWP的显著减少能起到很明显的环境保护作用。

关键词: 二元混合物, 精馏柱, 自复叠, R23, R41, 环境, 数值分析

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