Combined cooling and power system with solar-driven ejector refrigeration

被引：0
|
作者：
Xu Y. [1 ]
Wang H. [1 ]
Ge Z. [2 ]
Wang J. [1 ]
Xia Y. [1 ]
机构：
[1] Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming
[2] School of Architecture and Planning, Yunnan University, Kunming
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 04期
关键词：
Ejector; Exergy; Incident solar radiation; Solar ccllector; Solar refrigeration;
D O I：
10.19912/j.0254-0096.tynxb.2020-0708
中图分类号：
学科分类号：
摘要：
With the solar energy as the driving heat source, based on the ejected refrigeration and ORC, a combined power-cooling supply system with the solar ejected refrigeration is constructed, The system is divided into two parts: solar-heat collection subsystem and combined power-cooling supply subsystem. The R161 is used as the circulating working fluid of the combined power-cooling supply subsystem, a thermodynamic model of the system has been established through the Mtalab, and its performance is simulated. Under the design conditions, the refrigerating capacity of the system is 2.893 kW, the net output power is 1.594 kW, the refrigerating efficiency of the combined power-cooling supply subsystem is 12.47%, the power generation efficiency is 6.87%, and the exergy efficiency is 41.45%. According to the exergy analysis, the components with a relatively large exergy loss in the system are the solar heat collector (73.3%), generator (12.14%), evaporator (5.03%) and turbine (4.81%). Considering the actual process, the influence of the changes in the internal parameters of the system and the changes in the external environment parameters on the system is studied separately, It is found that the temperature rise of the high and low pressure generator is beneficial to the improvement of the system performance, at the same time, the efficiency of the heat collector can be all improved by the rise in the ambient temperature and the increase in the solar irradiance, thereby, the performance of the system is enhanced. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.
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页码：249 / 255
页数：6
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