Question

A chilled-water system requires a 100 gal/min pump with 40 ftWG of head. Select the most appropriate pump from the pump curves in the figure below. State the efficiency, motor power input, impeller size, and NPSH requirement for your selection. Note that the pump may not be a precise match to the specified flow condition Capacity (L/s) 10 12 18 60% 40% 50%: 55%,65% о, 68% 67% 7" 1750 50 68% 12 40S 67% 65% 10 10 60% ,55% hp (1.50 kW) I hp (0.75 kW) 3 hp (224 kw) 50% 20 20 1hp1.12 kW) (0.56 kW) NPSH required 10 10 0 100 Capacity (US gal/min) 150

Please show detailed work and write clearly.Thank you.

Answer 1

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