Twentieth century hand-book for steam engineers and electricians, with questions and answers .. . WORTHINGTON DUPLEX BOILER FEED PUMP. by (the weight of a cubic foot of water inpounds) gives cu. ft. per hour, which, divided by60, gives cu. ft. per minute. This multiplied by 50 ENGINEERING 1,728 ( number of cubic inches in a cubic foot) gives1,659 cu. in. per minute which the pump is required tosupply. Suppose the pump is to make forty strokesper minute, and the length of stroke is five 1659 -5-40 = cu. in. per stroke, which, dividedby 5 (length of stroke
Twentieth century hand-book for steam engineers and electricians, with questions and answers .. . WORTHINGTON DUPLEX BOILER FEED PUMP. by (the weight of a cubic foot of water inpounds) gives cu. ft. per hour, which, divided by60, gives cu. ft. per minute. This multiplied by 50 ENGINEERING 1,728 ( number of cubic inches in a cubic foot) gives1,659 cu. in. per minute which the pump is required tosupply. Suppose the pump is to make forty strokesper minute, and the length of stroke is five 1659 -5-40 = cu. in. per stroke, which, dividedby 5 (length of stroke in inches) gives sq. in. as• the required area of water piston. ^.7854 =, which is the square of the corresponding diam-. jri m i 1 —*«* jiiiil i J^0S.
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Keywords: ., bookcentury1900, bookdecade1900, bookpu, booksubjectsteamturbines
