摘要
基于多喷射器的太阳能喷射制冷系统,提出了喷嘴不变、改变喷射制冷中喷射器混合室的尺寸,即切换喷射器的运行方案;利用TRNSYS仿真软件模拟了夏季典型气象日,并通过与单喷射器的喷射制冷系统的运行进行对比,对设置多喷射器的喷射制冷系统中喷射器个数进行优化研究。结果表明:双喷射器的太阳能喷射制冷系统相对于单喷射器的制冷系统更具有优势,前者逐时制冷量比较大,一天中总制冷量比后者高15.3%,且综合热性能系数COP提高10%左右,运行时间比后者长1.5h左右;设置多喷射器的喷射制冷系统中喷射器的最优个数是3个,相对于设置双喷射器的喷射制冷系统,设置三组喷射器的喷射制冷系统一天中总的制冷量较高,比前者大2.8%左右,且系统COP较高,高7%左右。
Based on the multiple-ejectors of the solar ejector refrigeration system,an operation plan,namely injectors witching,was put forward in which the nozzle is constant,and the size of the spray cooling mixing chamber in the injector is changed.The TRNSYS simulation software was used to simulate the multi-ejector solar ejector refrigeration system and the single ejector refrigeration system in the typical summer weather and the optimization of the number of ejector in the ejector refrigeration system was set up,The results show that the solar ejector refrigeration system with the multiple-ejectors is superior to the single ejector refrigeration system.The former has a larger hourly refrigerating capacity,the total refrigerating capacity in a day is 15.3% higher than that for the latter;The former has a higher system COP,about 10% higher than that for the latter;The former has a running time one and a half hour longer than the latter.The optimal number of the ejector is three,giving an overall refrigerating capacity about 2.8%larger and the sys-tem COP,about 7% higher than the system with two ejectors.
作者
汪汉众
李风雷
田琦
白惠峰
WANG Hanzhong LI Fenglei TIAN Qi BAI Huifeng(College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China The Green Environmental Protection Group co. , LTD, Taiyuan 030024 ,China)
出处
《太原理工大学学报》
CAS
北大核心
2016年第6期728-733,共6页
Journal of Taiyuan University of Technology
基金
国际科技合作资助项目:基于喷射-压缩制冷的太阳能光热空调新技术(2013DFA61580)
山西省科技攻关项目资助项目:分级利用太阳能的喷射-压缩复合制冷技术研究(20140313006-6)
山西省回国留学人员科研资助项目:多喷式太阳能喷射与蒸发复合制冷技术研究(2016-032)
