Pump and Driver Efficiencies

Pump and Driver Efficiencies - 10/31/05 10 of 12 Pump and...

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10/31/05 9 of 12 Pump Drivers Most common Electric Motor Standard electric motor sizes (BHP) 0.5, 0.75, 1, 1.5, 2, 3, 5, 7.5 10, 15, 20, 25, 30, 40, 50, 60, 75 100, 125, 150, 200, 250, 300, 350 400, 450, 500, 600, 700, 800, 900 1,000, 1,250. .. Motor size must be matched to pump capability Motor rating should exceed requirements at design operating point due to flow variability Full pump capacity can be achieved only if the available BHP equals that required at the end of the pump curve Capital cost => motor rating (max BHP) Operating cost => actual hydraulic HP with pump and motor efficiencies applied. Driver alternatives Steam turbine, gas turbine, power recovery turbine, gas powered engine (recip)
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Unformatted text preview: 10/31/05 10 of 12 Pump and Motor Efficiencies (Plant Design and Economics for Chemical Engineers, Fourth Edition, Peters & Timmerhaus, pp 520-521, 1991) Efficiencies of Drives for Pumps and Compressors From Turton, R.; Bailie, R. C.; Whiting; W. B.; Shaeiwitz, J. A. Analysis, Synthesis, and Design of Chemical Processes, 2 nd Edition , Prentice Hall, 2003, p 214. Electric Drive ( ) ( ) [ ] 2 log 5 . 1 log 5 . 11 75 s s drive W W + = 10 < W s <10,000 kW Steam Turbine and Gas Expander ( ) ( ) [ ] 2 log 3 log 36 18 s s drive W W + = 100 < W s <10,000 kW Internal Combustion Engine and Gas Turbine ( ) ( ) [ ] 2 log log 11 10 s s drive W W + = 100 < W s <10,000 kW...
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Pump and Driver Efficiencies - 10/31/05 10 of 12 Pump and...

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