区域集中供冷系统水泵节能运行分析  

Analysis on Energy Saving Operation of Water Pump in RegionalCentralized Cooling System

作　　者：唐伟 李睿 吴爽 金旭[2] 杨迪[2] 刘忠彦[2] 洪文鹏[2] Tang Wei;Li Rui;Wu Shuang;Jin Xu;Yang Di;Liu Zhongyan;Hong Wenpeng(Zhuhai Hengqin Energy Development Co.LTD,Zhuhai Guang Dong 519015;School of Energy and Power Engineering,Northeast Electric Power University,Jilin Jilin 132012)

机构地区：[1]珠海横琴能源发展有限公司,广东珠海519015 [2]东北电力大学能源与动力工程学院,吉林吉林132012

出　　处：《东北电力大学学报》2020年第6期73-77,共5页Journal of Northeast Electric Power University

基　　金：横向协作研究课题(HQNYKJXM-2018-001)。

摘　　要：供冷系统在部分负荷运行时,因水泵设计选型匹配不当,存在“大流量小温差”问题.文中根据某工程实例,针对供冷管网在不同负荷率下的运行工况,结合水泵变频的运行特性,探讨其最佳运行方式及最优节能方式.结果表明:水泵变频综合效率随着负荷率的降低而降低;在相同的负荷率下,并联水泵台数越少其综合效率越高.当系统计算流量小于三台水泵的额定流量时,采用三台水泵变频比四台水泵并联变频运行要节能,当系统计算流量小于两台水泵的额定流量时,采用两台水泵变频比采用三、四台水泵并联变频运行要节能.When the cooling system is operating under partial load,there is a problem of“large flow and small temperature difference”due to improper matching of pump design and selection.In this paper,according to a project example,according to the operation conditions of cooling pipe network under different load rates,combined with the operation characteristics of pump frequency conversion,the optimal operation mode and optimal energy saving mode are discussed.The results show that:the comprehensive efficiency of variable frequency pump decreases with the decrease of load rate;under the same load rate,the less the number of parallel pumps,the higher the comprehensive efficiency.When the calculated flow of the system is less than the rated flow of three water pumps,the frequency conversion of three pumps is more energy-saving than that of four pumps in parallel.When the calculated flow of the system is less than the rated flow of two pumps,the frequency conversion of two pumps is more energy-saving than that of three or four pumps in parallel.

关 键 词：水泵变频 综合效率 负荷率 水泵功率 

分 类 号：TU831.3[建筑科学—供热、供燃气、通风及空调工程]