Water Horsepower 1
Water Horsepower 1 : (Mech; Abb: whp) A unit of work equal to 33,000 foot-pounds, or one horsepower-minute. Note: One whp is required to lift 33,000 lb (3958. 61 gal of water) a distance of 1 foot or to provide a 100-ft pressure head to about 40 gallons of water. Approx 2. 5 whp are required to provide a stream of 100 gpm at a pressure equal to 100 feet of head
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