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| Energy consumption analysis on constant-pressure variable-frequency water supply and variable-pressure variable-frequency water supply |
| TANG Yue1, SHANG Ya-bo2, WU Xu2, CHEN Yi-chun2, YUAN Jian-ping1 |
| 1.Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.Zhenjiang Water Works Company, Zhenjiang, Jiangsu 212003, China |
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Abstract The energy consumptions of constant-pressure water supply and variable-pressure water supply are studied.The energy consumptions of constant-pressure and variable-pressure running with pump′s full-speed are compared with diagram.The static head change of network characteristics with pump′s running condition is analyzed.Based on a pump station′s running data,the running diagram,the relation of pump efficiency,flow under variable speed,the relation of energy consumption per 100 m~3 and rotating speed are obtained.It is found that constant-pressure water supply has the smaller variable ranges of rotating speed and flow rate,the energy consumption at small flow rate increases,and the variable-pressure water supply has the larger variable ranges of rotating speed and flow rate.The advantages and disadvantages of pump constant-pressure and variable-pressure water supply are compared from three aspects of variable-speed range,pump′s high-efficiency field and energy consumption.The conclusion is obtained that the energy consumption of pump variable-pressure water supply is 20% lower than that of pump constant-pressure water supply.
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Received: 08 August 2013
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| [1] 黄秉政.调速泵供水设计几个问题的讨论[J].给水排水,1994(4):10-13[2] 崔福义,陈卫.恒压给水系统压力控制点的优选[J].中国给水排水,1996,12(1):20-22[3] 王荣涛,王新江.变频调速变压变量供水及数据采集系统的设计研究[J].山东建材学院学报,1995,9(1):9-12[4] 何政斌,金海城,周炳强.变频调速变压变流量供水设备的研制及运行效果分析[J].给水排水,1998,24(10):59-63[5] 王利平,刘欢,郑天恒.变压变量供水技术实现的探讨[J].冶金能源,2002,21(6):45-47[6] 马桂梅,谭光仪,陈次昌.泵变频调速的节能方案讨论[J].四川工业学院学报,2003,22(3):5-7[7] 金明山,马桂梅.神经网络在泵的变频调速模型建立中的应用[J].节能,2003(3):16-17[8] 袁云,俞赛峰,林磊.排水泵站变频节能的工程实践和机理初探[J].排灌机械,2006,24(5):25-28 |
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