Performance analysis of a novel compressor-ejector cycle with two-stage evaporation

LIANG Xingyu; LIU Hongxin; CAO Xiang; SHAO Liangliang; ZHANG Chunlu

doi:10.11949/j.issn.0438-1157.20181163

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Performance analysis of a novel compressor-ejector cycle with two-stage evaporation

更新时间：2025-12-10

- Performance analysis of a novel compressor-ejector cycle with two-stage evaporation
- CIESC Journal Issue S2, Pages: 26-30(2018)
- 作者机构：
  
  同济大学机械与能源工程学院制冷与低温工程研究所,上海,201804
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20181163
  CLC： B65
- Online First：31 December 2018，
  
  Published：31 December 2018
- 稿件说明：
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LIANG Xingyu, LIU Hongxin, CAO Xiang, et al. Performance analysis of a novel compressor-ejector cycle with two-stage evaporation[J]. CIESC Journal, 2018, (S2): 26-30.
DOI：

LIANG Xingyu, LIU Hongxin, CAO Xiang, et al. Performance analysis of a novel compressor-ejector cycle with two-stage evaporation[J]. CIESC Journal, 2018, (S2): 26-30. DOI： 10.11949/j.issn.0438-1157.20181163.

摘要

喷射循环和双级蒸发循环都能有效提高蒸气压缩制冷循环COP，因为它们分别降低了由等焓节流和温差传热造成的热力学损失。为了进一步提高循环能效，通过复合使用上述两项节能措施，提出了一种压缩机和喷射器耦合的双级蒸发喷射循环。通过建立新型循环的热力学模型，使用数值计算的方法验证了其显著的节能效果。在特定工况下，双级蒸发喷射循环制冷COP较简单循环、喷射循环和双级蒸发循环分别可提升20.4%、10.9%和7.4%，且该循环在使用多种不同制冷剂时均能获得能效提升效果。

Abstract

Ejector cycle and two-stage evaporation cycle are two different ways to improve coefficient of performance (COP) for vapor-compression refrigeration or heat pump systems. They decrease the irreversible losses in throttling and heat transfer process

respectively. To further improve COP

a novel compressor-ejector cycle with two-stage evaporation is proposed. In this cycle

an ejector is applied to lift the lower evaporating pressure by recovering the expansion work. A thermodynamic model is developed to analyze performance of the new cycle. Numerical results indicate that COP of the new cycle under basic operating conditions is 20.4%

10.9%

7.6% higher than basic refrigeration cycle

ejector cycle and two-stage evaporation cycle

respectively. The improvement of COP is applicable to different refrigerants.

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