吊顶辐射冷却塔供冷系统试验研究与性能分析

通过供冷试验及TRNSYS软件模拟研究了吊顶辐射冷却塔供冷系统的运行效果,分析了气象参数、部件结构等因素对系统供冷效果的影响,并与常规供冷系统全年的运行能耗进行对比。试验与理论分析结果表明,吊顶辐射冷却塔供冷系统的有效供冷量能够满足用户供冷需要,供冷房间温度稳定且分布均匀。冷却塔供冷效果与大气湿球温度、建筑内部负荷、热交换器结构等因素有关。辐射顶板末端与冷却塔供冷匹配性高,系统全年运行时数增加,应用于需全年供冷的建筑节能效果显著。

Experimental and theoretical studies on performance of tower cooling system with radiant cooling ceiling

A tower cooling system with radiant cooling ceiling was studied in this paper.By experiment and simulation using TRNSYS,the system operational effect was researched,the influencing factors such as meteorological parameter and subunit construction was analyzed,and the annual energy consumption between this system and a conventional cooling system was compared.Results show that the system has a large cooling capacity enough to meet the demand and keeps room temperature stable.The operational effect is related to outside wet-bulb temperature,cooling load inside the building and heat exchanger construction.As radiant cooling ceiling matches tower cooling system well,the system has a longer operating duration.If it is applied to buildings which need cooling supply all the year,the system will have an apparent effect of energy conservation.