Design and performance analysis of solar-powered air-cooled two-staged ejector cooling systems with natural refrigerants for middle and low temperature purpose

LU Wei; CHEN Hongjie; YANG Lin; CAO Cong

doi:10.3969/j.issn.0438-1157.2012.12.016

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Design and performance analysis of solar-powered air-cooled two-staged ejector cooling systems with natural refrigerants for middle and low temperature purpose

更新时间：2025-12-10

- Design and performance analysis of solar-powered air-cooled two-staged ejector cooling systems with natural refrigerants for middle and low temperature purpose
- CIESC Journal Issue 12, Pages: 3847-3854(2012)
- 作者机构：
  
  广西大学化学化工学院, 广西石化资源加工及过程强化技术重点实验室,广西,南宁,530004
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.12.016
  CLC： B6S214.4
- Online First：03 September 2012，
  
  Published：03 September 2012
- 稿件说明：
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LU Wei, CHEN Hongjie, YANG Lin, et al. Design and performance analysis of solar-powered air-cooled two-staged ejector cooling systems with natural refrigerants for middle and low temperature purpose[J]. CIESC Journal, 2012, (12): 3847-3854.
DOI：

LU Wei, CHEN Hongjie, YANG Lin, et al. Design and performance analysis of solar-powered air-cooled two-staged ejector cooling systems with natural refrigerants for middle and low temperature purpose[J]. CIESC Journal, 2012, (12): 3847-3854. DOI： 10.3969/j.issn.0438-1157.2012.12.016.

摘要

依据中低温空调温度要求

分别以水、氨、R290和R600a为工质

设计了额定制冷量为10kW的风冷太阳能双级喷射制冷系统并对其进行变工况性能分析。在获得相同制冷量和室内温度的条件下

水系统最省材料

其次是氨和R290系统

且二者相当

R600a系统最耗材。4种工质系统均具有较强的变工况性能;综合考虑环境温度和太阳辐照度的影响

各系统制冷能力相当。水系统的COP较其他系统的高

且在低太阳辐照度时更明显;其余3个系统COP从高到低依次为氨、R290、R600a。在太阳辐照度较弱地区

使用水喷射制冷系统更合理。

Abstract

According to the requirement of middle and low temperature air conditioning

the solar-powered air-cooled two-staged ejector cooling system with rated cooling capacity of 10 kW is designed

using water

ammonia

R290 and R600a as working fluids separately.The performance is analyzed.At certain cooling capacity and indoor temperature

the water system is the most material-saving system

followed by the ammonia and R290 ones with equivalent consumption

and the R600a system is the most material-consuming one.The four systems have relatively perfect off-design performance and their cooling capacities are almost the same on comprehensive consideration of the influences of ambient temperature and solar irradiance.Among the four systems

the water system presents higher COP value

the effect of which is more obvious under weaker solar irradiance

followed by ammonia system

R290 and R600a systems. A solar-powered air-cooled ejector refrigeration system with water as working fluid is more suitable for use in the regions with relatively weak solar irradiance.

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