并联变频永磁同步电机水泵在制冷机房中的节能性研究  

Research on the energy saving of parallel variable frequency permanent magnet synchronous motor pump in refrigeration room

作　　者：牛梦涵 崔红社[1] 周腾德 刘龙 NIU Menghan;CUI Hongshe;ZHOU Tengde;LIU Long(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266525,China)

机构地区：[1]青岛理工大学环境与市政工程学院,青岛266525

出　　处：《青岛理工大学学报》2024年第3期95-102,共8页Journal of Qingdao University of Technology

基　　金：山东省高等学校科技计划项目(J18KA189)。

摘　　要：在制冷机房系统中水泵能耗占机房总能耗的30%。提出一种新的水泵运行模式,即去除水泵出口单向阀和应用永磁同步电机,在所有负荷区间,2台冷冻水泵、冷却水泵同步运行,通过调整水泵运行频率,满足机组流量变化需求。利用TRNSYS仿真模拟软件建立制冷机房系统的模型,模拟该运行模式对水泵能耗及制冷机房运行能效的影响。模拟结果表明:相较于改造前,去除水泵出口单向阀后空调水系统阻力降低15%,进而优化水泵选型。在改造方案下,1台和2台冷水机组开启时,水泵节能率分别为26.4%、29.7%,制冷机房系统节能率分别为6.3%、7.8%,机房逐时EER(综合能效)分别可达5.49、5.00。The energy consumption of water pump accounts for 30%of the total energy consumption of refrigerator room.In this paper,a new operation mode of water pump is proposed,that is,removing the check valve at the pump outlet and applying the permanent magnet synchronous motor.In all load zones,two chilled water pumps and cooling water pumps run synchronously.By adjusting the operation frequency of water pumps,the needs of the unit flow changes are met.TRNSYS is used to establish the refrigeration room system model,and the influence of the operation mode on the energy consumption of the water pump and the energy efficiency of the refrigeration room is simulated.The simulation results show that,compared with the scheme before the transformation,the resistance of air conditioning water system is reduced by 15%by removing the water pump outlet check valve,and then the selection of water pump is optimized.Under the optimized scheme,when a single chiller and two chiller units are started,the energy saving rates of the water pump are 26.4%and 29.7%,and the system energy saving rates are 6.3%and 7.8%respectively,with hourly EER of 5.49 and 5.00 respectively.

关 键 词：水泵改造 同步变频 制冷机房 TRNSYS 建筑节能 

分 类 号：TK01[动力工程及工程热物理]