冷凝器蒸发冷却对制冷机组性能影响的实验研究讲义.doc

编号： 153571 冷凝器蒸发冷却对制冷机组性能影响的实验研究 王怡飞1,陈旭2,任建勋1,陈群1 （1清华大学航天航空学院，热科学与动力工程教育部重点实验室 2三峡高科信息技术有限责任公司010E-mail: chenqun@tsinghua.edu.cn） 摘 要：蒸发冷却可以利用潜热降低冷凝器进风温度，因而在制冷机组节能等领域具有重要应用价值。本文针对三峡地下水电站的空冷制冷机组，在冷凝器进风进行蒸发冷却的条件下，实验测量了机组运行的各种性能参数，分析了机组的运行规律，研究了不同环境温度和湿度条件下蒸发冷却对机组性能的影响。实验结果表明冷凝器进风采用蒸发冷却可以明显提高机组的性能:在高温低湿环境下，对冷凝器进风进行蒸发冷却 文献标识码：A Experimental Research on the Influence of Evaporative Cooling on Chiller Performance WANG Yi-Feia, CHEN Xub, REN Jian-Xuna, CHEN Quna (aKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China bThree Gorges High-Tech Information Technology Co., Ltd, Yichang 443002, China) Abstract: Evaporative cooling is significant for energy conservation of chillers, because the latent heat during water evaporation benefits the decrease of condensation pressure and temperature in condenser. This paper studied the influences of evaporative cooling on an air cooling chiller installed in the underground hydroelectric power plant of the Three Gorges. We measured the working parameters of the chiller with the evaporative cooling of the condenser inlet air, and further analyzed the chiller performance with different ambient temperatures and humilities. Experimental results showed that the evaporative cooling process of condenser inlet air benefits the improvement of the chiller performance, where it contributes to the reduction of the total power consumption in condition of higher temperature and lower humidity. Meanwhile, increasing the environment temperature and decreasing the humidity further improve the chiller performance with the evaporative cooling process of condenser inlet air. Key words: Refrigeration system; Energy conservation; Evaporative cooling; Coefficient of Performance 0 引言 蒸发冷却可利用潜热降低冷凝器进风温度，在制冷系统[1, 2]，因此很多学者首先过程中的机理例如umo等人基于传热传质方程蒸发冷却过程后工质的状态[3, 4]hidansan等人则基于合理简化的模型蒸发冷却过程的特征参数[5]蒸发冷却部件的传热传质性能例如Muangnoi等不