Transcription of Hydraulic Considerations in Pumping System Design
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Hydraulic Considerations in Pumping System Design
VWEA16_Rogers_Hydraulic Considerations in Pumping System DesignHydraulic Considerations in Pumping System DesignVWEA Wastewater Operations Education ConferenceRoanoke VirginiaJuly 14, 2016 VWEA16_Rogers_Hydraulic Considerations in Pumping System DesignAgenda Basics of Hydraulics and Pump Operation Pumping System Design Process Types of Pumps System Curve Development Pump Station Layout Pump Selection Considerations Hydraulic Concerns Case Studies Summary QuestionsVWEA16_Rogers_Hydraulic Considerations in Pumping System DesignAbbreviations and Acronyms BEP best efficiency point BHP brake horsepower fps or ft/sec feet per second (velocity) FM force main gpm gallons per minute (flow) H Head (feet)
n •Energy dissipated due to friction and turbulence during pump operation •Major Losses (Friction Losses) • Due to friction between pumped water and inner surface of piping • H f = 3.02 L D-1.167 (V/C h)1.85 (Hazen-Williams Formula) where: • L is length of pipe (feet) • D is diameter of pipe (square feet) • V is mean velocity (fps) • C h is Hazen-Williams friction coefficient ...
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