双温太阳能双级喷射式制冷空调系统的节能分析  

ENERGY SAVING ANALYSIS OF SOLAR TWO-STAGE EJECTOR REFRIGERATION AIR-CONDITION SYSTEM WITH DOUBLE EVAPORATION TEMPERATURE

作　　者：陶帅 王辉涛[1] 朱道飞[1] 余伟 徐煜 丁祥 Tao Shuai;Wang Huitao;Zhu Daofei;Yu Wei;Xu Yu;Ding Xiang(Faculty of Metallurgical and Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《太阳能学报》2021年第11期156-162,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51366055)。

摘　　要：针对现有空调系统存在的问题,提出一种双温太阳能双级喷射式制冷空调系统,通过金属辐射板消除室内的大部分热负荷,空气处理器承担室内的湿负荷和部分热负荷。建立该系统热力性能的数学模型,以R245fa为循环工质,考察发生温度和室内负荷对系统性能的影响,结果表明:该系统可在发生温度较低的工况下运行;当发生温度为70~85℃时,该系统的能效比为0.114~0.222;当室内人数增多导致湿负荷和新风需求增大的情况下,能效比略有降低,但仍比常规喷射式制冷的理论能效比高。For the problems of the existing air condition system,a solar two-stage ejector refrigeration system with double evaporation temperature is proposed.The system eliminates most of the heat load of the room by the metal radiant panel and the air handler bears the indoor wet load and part of the heat load.The mathematical model of the thermal performance of the system is established,which adopts an appropriate refrigerant R245fa as circulating working fluid.The effort of generating temperature and indoor load was obtained.Results indicate that the system can be operated under low-generating-temperature conditions.When the generating temperature is between 70℃and 85℃,the COP of the system can reach 0.114-0.222.When the increase of indoor population leads to the increase of wet load and fresh air demand,the COP of the system will slightly drop.However,the COP is still higher than that of conventional ejector refrigeration.

关 键 词：太阳能 喷射器 能效比 发生温度 湿负荷 双温空调 

分 类 号：TB615[一般工业技术—制冷工程]