压缩机和喷射器耦合的双级蒸发喷射循环性能分析

doi:10.11949/j.issn.0438-1157.20181163

化工学报 ›› 2018, Vol. 69 ›› Issue (S2): 26-30.DOI: 10.11949/j.issn.0438-1157.20181163

压缩机和喷射器耦合的双级蒸发喷射循环性能分析

梁星宇, 刘洪鑫, 曹祥, 邵亮亮, 张春路

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

收稿日期:2018-10-08 修回日期:2018-10-13 出版日期:2018-12-31 发布日期:2018-12-31
通讯作者: 张春路
基金资助:
国家自然科学基金项目（51676140）。

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

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

Institute of Refrigeration and Cryogenics Engineering, School of Mechanical Engineering, Tongji University, Shanghai 201804, China

Received:2018-10-08 Revised:2018-10-13 Online:2018-12-31 Published:2018-12-31
Supported by:
supported by the National Natural Science Foundation of China (51676140).

摘要/Abstract

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.

中图分类号:

TB65

梁星宇, 刘洪鑫, 曹祥, 邵亮亮, 张春路. 压缩机和喷射器耦合的双级蒸发喷射循环性能分析[J]. 化工学报, 2018, 69(S2): 26-30.

LIANG Xingyu, LIU Hongxin, CAO Xiang, SHAO Liangliang, ZHANG Chunlu. Performance analysis of a novel compressor-ejector cycle with two-stage evaporation[J]. CIESC Journal, 2018, 69(S2): 26-30.

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压缩机和喷射器耦合的双级蒸发喷射循环性能分析

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

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