太阳能喷射与间接蒸发耦合制冷系统的特性分析  

Analysis of characteristics of solar ejector and indirect evaporation coupled cooling system

作　　者：李蓉蓉 李风雷[1] 韩瑞春 Li Rongrong;Li Fenglei;Han Ruichun(College of Environmental Science and Engineering,Taiyuan University of Technology,Taiyuan 030600,China;Taiyuan Design Institute of China Raihvay Engineering Consulting Design Group,Taiyuan 030024,China)

机构地区：[1]太原理工大学环境科学与工程学院,太原030600 [2]中铁工程咨询设计集团太原设计院,太原030024

出　　处：《低温与超导》2018年第12期60-66,90,共8页Cryogenics and Superconductivity

基　　金：国家国际科技合作专项项目(2013DFA61580);山西省科技攻关项目(20140313006-6);山西省回国留学人员科研项目(2016-032)资助

摘　　要：根据兰州地区夏季太阳辐射和气候特点,采用以R134a为制冷剂的太阳能喷射—间接蒸发耦合制冷系统,为高3. 3m、面积18 m2的办公建筑进行供冷,基于TRNSYS软件模拟系统进行计算,通过与压缩制冷系统的耗电量对比,得出耦合系统的节能效果,并比较不同类型冷凝器用于耦合系统时对系统性能的影响。结果表明:将蒸发式冷凝器用于耦合系统的冷凝效果最好,喷射器与耦合系统的性能均得以提高。耦合系统供冷季制冷量完全满足冷负荷需求,耗电量为126. 47kWh,为压缩制冷系统同期耗电量的19. 9%;间接蒸发冷却子系统运行共计552h,制冷量约占系统总制冷量的47%;耦合系统日均综合机械性能系数最大可达19. 22,平均值为13,显示出很好的节能效果和运行特性。According to the characteristics of summer solar radiation and temperature and climate in Lanzhou region,based on TRNSYS software,a solar injection-indirect evaporation coupled cooling system using R134a as a refrigerant was simulated and used to coal a 3.3m high office building with an area of 18m^2.The relationship between the quantity and the cooling load, the comparison of the power consumptions of the coupled system and the mechanical compression refrigeration system,the energy saving effect of the coupled system were obtained.The influence of different types of condensers used in the coupled system on the system performance was compared and analyzed.The results show that the condensing effect is best when the evaporative con- denser is used in the coupled system,and the ejector and the system performance are improved.The coupling system for cooling season fully meets the cooling load requirements.In the cooling season,the power consumption is 126.47kWh,which accounts for 19.9% of the total power consumption of the mechanical compression refrigeration system.The indirect evaporative cooling subsystem operates for a total of 552 hours,and the cooling capacity accounts for approximately 47% of the total cooling capacity of the system.The average daily overall mechanical performance coefficient of the coupling system can reach 19.22 with an aver- age value of 13,showing a very good energy-saving effect and operating characteristics.

关 键 词：太阳能 喷射制冷 间接蒸发冷却 耦合 蒸发式冷凝 TRNSYS仿真 

分 类 号：TB657[一般工业技术—制冷工程]