技术中心

【英文篇名】 Performance test and fault diagnosis for chillers based on chilled water flow rate variation 【作者中文名】 李志生; 张国强; 刘建龙; 李冬梅; 梅胜; 【作者英文名】 Li Zhisheng~★Guangdong University of Technology; Guangzhou; China; Zhang Guoqiang; Liu Jianlong; Li Dongmei and Mei Sheng; 【作者单位】 湖南大学; 株州工学院; 广东工业大学; 广东工业大学 广东工业大学; 【文献出处】 暖通空调, Heating Ventilating 冷水量; 性能; 试验研究; 故障诊断; 【英文关键词】 water chiller; chilled water flow rate; performance; test study; fault diagnosis; 【摘要】 研究了定流量/变温差和变流量/定温差条件下冷水量变化对机组性能的影响。结果表明:大型冷水机组蒸发器侧冷水大范围变流量不会影响系统的稳定性;在一定范围内冷水机组制冷量与冷水流量呈线性变化,系统的性能系数COP基本保持稳定,这为冷水泵的节能运行提供了良好的依据;蒸发器盘管中冷水流量较大时,允许的冷水流速变化范围可以适当增加;冷水量调节的极限速度为10.1%/min,否则会造成冷水机组运行不安全;蒸发器冷水流量变化引起的冷水机组性能变化可作为故障诊断的判断依据。 【英文摘要】 Studies the influence of chilled water flow rate variation on the performance of chillers under the constant flow rate/variable temperature difference and variable flow rate/constant temperature difference conditions.The results show that a larger chilled water flow rate variation range in evaporator will not affect the stability of the system for large chillers;cooling capacity of chiller is linear with chilled water flow rate in a certain scope and the coefficient of performance(COP) of chiller is basical...