太阳能喷射式制冷系统性能研究  

Research on performance of solar-ejector refrigeration system

作　　者：陈怡然 CHEN Yi-ran(School of Energy Science and Engineering,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083

出　　处：《资源信息与工程》2020年第5期132-136,共5页Resource Information and Engineering

摘　　要：太阳能喷射式制冷系统以低品位热源太阳能作为唯一动力来源实现制冷循环,同时喷射器利用高压流体卷吸低压流体,无需其他能源以保证正常工作,因此太阳能喷射式制冷技术是可持续发展、节能环保的技术之一。为探索不同工况参数对制冷系统的性能的影响,本文通过数值计算分析了给定工况条件发生温度90℃、蒸发温度7.2℃、冷凝温度54.4℃的情况下,改变室外环境温度、室内环境温度、发生温度等单一系统工况参数,其性能系数的变化趋势。计算结果显示,降低室外环境温度、升高室内环境温度或升高发生温度均有利于提高系统性能,并且通过主成分分析可知,室内外环境温度对性能系数的影响要大于发生温度所产生的影响。The solar ejector refrigeration system uses solar energy,a low-grade heat source,-as the only power source to achieve the refrigeration cycle.At the same time,the ejector uses high-pressure fluid to entrain low-pressure fluid,without other energy sources to ensure normal operation.Therefore,solar ejector refrigeration technology is one of sustainable,energy-saving and environmental-protecting technology.In order to explore the influence of different operating parameters on the performance of the refrigeration system,this paper did numerical calculation and analyses to obtain the change trend of the coefficient of performance(COP)after changing the indoor and outdoor temperature and the heat source temperature,under the given working conditions(the heat source temperature was 90℃,the evaporation temperature was 7.2℃,and the condensation temperature was 54.4℃).The calculation results showed that lowering the outdoor temperature,increasing the indoor ambient temperature,or increasing the heat source temperature was beneficial to improve COP.Through the principal component analysis,the influence of indoor and outdoor temperature on COP was greater than the influence of the heat course temperature.

关 键 词：太阳能 喷射式制冷 性能系数 工况参数 

分 类 号：TK511[动力工程及工程热物理—热能工程]