太阳能吸收/压缩复叠双温制冷系统特性研究  

Study on characteristics of Solar Absorption/Compression Cascade Refrigeration System With Double Evaporators

作　　者：宋梦宇 王林[1] 曹艺飞 李修真 梁坤峰[1] SONG Meng-Yu;WANG Lin;CAO Yi-Fei;LI Xiu-Zhen;LIANG Kun-Feng(Institute of Building Energy and Thermal Science,Henan University of Science and Technology,Luoyang 471023,China)

机构地区：[1]河南科技大学建筑能源与热科学技术研究所,洛阳471023

出　　处：《工程热物理学报》2021年第7期1651-1658,共8页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51876055)。

摘　　要：根据温湿度独立控制空调系统所需冷量的品位不同,提出了一种冷量梯级利用的太阳能吸收/压缩复叠双温制冷系统,由太阳能溴化锂单效吸收制冷子系统、高温冷水循环子系统和水冷压缩制冷子系统复叠而成。建立了新系统的热力学数学模型,分析太阳能溴化锂单效吸收制冷子系统蒸发温度、发生温度和环境温度对新系统性能影响,并与传统的太阳能溴化锂单效吸收制冷(SSAR)系统和太阳能吸收/压缩复叠制冷(SAC-CR)系统进行性能比较。结果表明,存在最优的发生温度和环境温度使系统所需集热面积最小,新系统所需集热器面积均低于传统SAC-CR和SSAR系统,且新系统功耗显著低于传统SAC-CR系统,为面向温湿度独立控制空调系统应用的吸收/压缩复叠双温制冷机组研制提供理论依据。According to the different grades of cooling capacity required by temperature and humidity independent control air-conditioning system,a novel solar absorption/compression cascade refrigeration system with double evaporators(SAC-CRSDE)is proposed,which is composed of solar lithium bromide single-effect absorption refrigeration subsystem,high-temperature cold water circulation subsystem and water-cooled compression refrigeration subsystem.The thermodynamic mathematical model is established to analyze the effects of the evaporating temperature and generating temperature of solar lithium bromide single-effect absorption refrigeration(SSAR)subsystem,and ambient temperature on the novel system,and its performance is compared with the conventional solar absorption/compression cascade refrigeration(SAC-CR)system and solar lithium bromide single-effect absorption refrigeration(SSAR)system.The results indicate that there are optimum generating temperature and ambient temperature to obtain the minimum heat-collecting area of the system,and the heat-collecting area of the novel system is lower than that of the conventional SAC-CR and SSAR systems,and the power consumption of the novel system is significantly lower than that of the conventional SAC-CR system,which provides a theoretical basis for the development of absorption/compression cascade refrigeration system with double evaporators required by temperature and humidity independent control air-conditioning system.

关 键 词：吸收制冷 复叠制冷 太阳能集热器 冷量梯级利用 性能系数 

分 类 号：TK123[动力工程及工程热物理—工程热物理]