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Title: Performance Study of a Novel Ejector-Cascade Refrigeration System with Regenerator
题目：新型带热回收器的喷射复叠制冷系统性能研究
Authors: CHI Weikai, YANG Qichao, CHEN Xiaonan, LIU Guangbin, ZHAO Yuanyang, LI Liansheng
作者：迟卫凯，杨启超，陈晓楠，刘广彬，赵远扬，李连生
单位：青岛科技大学机电工程学院
Journal of Thermal Science, 2024, 33(5): 1618-1629.
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摘要
Abstract: In this paper, a novel NH3/CO2 ejector-cascade refrigeration system with regenerator is proposed, which can recycle the waste heat at the outlet of the compressor. After establishing the mathematical model of the system, the theoretical energy and exergy analysis are carried out and compared with the conventional cascade refrigeration system. It is concluded that compared with the conventional cascade refrigeration system, the novel ejector-cascade refrigeration system with regenerator has the advantages of less power consumption of the compressor, less component exergy destruction, high system performance, and is more suitable for working at a lower temperature. Under the working conditions studied in this paper, compared with the conventional cascade refrigeration system, the COP of the novel ejector-cascade refrigeration system with regenerator is increased by 9.58%; the exergy efficiency is increased by 9.50%, and the optimal evaporation temperature is about –45°C.
摘要：本文提出了一种新型带热回收的喷射-复叠制冷系统，回收高温级压缩机的排气余热驱动喷射器，实现高温级过冷的同时，对高温压缩机进行补气。建立了系统分析的数学模型，进行能量和㶲分析并与常规复叠制冷系统进行对比。研究结果表明：新型带热回收的喷射复叠制冷系统具有功耗低、总㶲损少且性能系数高的优点，适用于制取较低温度的工况。在典型工况下，相较于常规复叠制冷系统，新系统的COP提高了9.58%，㶲效率降低了9.50%。
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引用格式
CHI Weikai, YANG Qichao, CHEN Xiaonan, LIU Guangbin, ZHAO Yuanyang, LI Liansheng, Performance Study of a Novel Ejector-Cascade Refrigeration System with Regenerator, Journal of Thermal Science, 2024, 33(5): 1618-1629.
2024 Vol.33 No.4
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