太阳能喷射辅助压缩制冷系统影响因素研究
Factors influencing performance of ejector based solar energy assisted compression refrigeration system
摘要：
为了优化太阳能喷射辅助压缩制冷系统部件匹配与控制，建立了数学模型并对模型进行了求解，研究了喷射器喷嘴喉部与混合室的面积比、太阳能集热面积及蓄热水箱容积对系统性能与运行特性的影响。结果表明：喷射器喷嘴喉部与混合室的面积比及太阳能集热面积是影响系统性能与运行特性的重要因素，存在最佳喷嘴喉部与混合室面积比和制冷系统与太阳能集热器面积间的最佳匹配；蓄热水箱容积对系统全天制冷量影响不明显，但对系统的节能效率和运行特性具有一定的影响，且容积越大节能率越高。
Abstract：
In order to optimize the systems components matching and controlling, develops a mathematical model, and studies the key factors influencing the performance and characteristics of the system, such as area ratio of nozzles throat and mixing chamber, area of solar energy collector and volume of hot water storage tank. The results show that the area ratio of nozzles throat and mixing chamber of the ejector and the area of solar energy collector greatly impact the operating characteristics and performance of the system, and there are an optimized area ratio of nozzles throat and mixing chamber and an optimized match between the area of solar energy collector and the system. The volume of hot water storage tank does not obviously impact the systems daily refrigerating capacity, but influences the energy saving rate and operating characteristics of the system, and the larger the volume, the higher the energy saving rate.
Keywords:solar energy, ejector, refrigeration system, influencing factor, area ratio of nozzles throat and mixing chamber, area of solar energy collector, volume of hot water storage tank