Ejector Design and Energy-saving Analysis of Vapor Compression/Ejection Refrigeration System

Qi Dawei; Liu Jianhua; Zhang Liang; Jiang Linlin

doi:10.3969/j.issn.0253-4339.2014.01.103

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Ejector Design and Energy-saving Analysis of Vapor Compression/Ejection Refrigeration System

更新时间：2024-07-18

- Ejector Design and Energy-saving Analysis of Vapor Compression/Ejection Refrigeration System
- Journal of Refrigeration Vol. 35, Issue 1, (2014)
- 作者机构：
  
  上海理工大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2014.01.103
  CLC：
- Published：2014
- 稿件说明：
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Qi Dawei, Liu Jianhua, Zhang Liang, et al. Ejector Design and Energy-saving Analysis of Vapor Compression/Ejection Refrigeration System[J]. Journal of Refrigeration, 2014, 35(1).
DOI：

Qi Dawei, Liu Jianhua, Zhang Liang, et al. Ejector Design and Energy-saving Analysis of Vapor Compression/Ejection Refrigeration System[J]. Journal of Refrigeration, 2014, 35(1). DOI： 10.3969/j.issn.0253-4339.2014.01.103.

摘要

蒸汽压缩/喷射制冷系统是一种有效的节能系统，可以减少节流膨胀损失，降低压缩机压力比，提高制冷系统效率。选择5种计算工况对蒸汽压缩/喷射制冷系统进行计算，研究喷射器结构与蒸发温度和冷凝温度的变化规律，并与普通蒸汽压缩系统对比，从制冷量、压缩机耗功、性能系数三个角度分析新系统的节能效果。计算结果表明蒸汽压缩/喷射制冷系统在低温工况条件下节能效果最优，制冷量最大可提高29%，压缩机耗功最大可降低65%，COP值最大可提高63%。

Abstract

The vapor compression/ejection refrigeration system (VCERS) is an energy-saving system which can reduce the loss of throttling expansion and the pressure ratio of compressor to improve the efficiency of the refrigeration system. The structure of ejector related with the evaporating and condensing temperature is researched and the energy-saving effects are compared with the compression refrigeration system from the refrigerating capacity

the compressor work and COP on five working conditions. The results indicate that the VCERS is more suitable for the low temperature working condition

the maximum increase of refrigerating capacity is about 29%

the maximum decrease of the compressor work is about 65% and the maximum increase of COP is about 63%.

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