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Developing system head curves for closed systems
Author(s) -
Walski Thomas,
Hartell Wayne,
Wu Zheng
Publication year - 2010
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.2010.tb10189.x
Subject(s) - head (geology) , suction , pressure head , hydraulic head , discharge pressure , work (physics) , environmental science , computer science , mechanics , petroleum engineering , marine engineering , engineering , geology , mechanical engineering , geotechnical engineering , physics , geomorphology , gas compressor
System head curves can be readily developed for pumping systems with a tank on both the suction and discharge side of the pump. However, many pressure zones in water distribution systems do not have a tank on the discharge side of the pump, and the usual methods for creating system head curves do not work for such systems. This article discusses the development of a new method to determine system head curves for closed systems and the implications for pump selection and operation. The analysis indicates that system head curves fluctuate much more widely for systems without discharge‐side tanks than they do for those with such tanks.