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A centrifugal pump is require net pressure of 4 kg/cm2. Dete required by the pump, if its o- gravity of gasoline as 0.7. (57

A centrifugal pump is require net pressure of 4 kg/cm2. Dete required by the pump, if its o- gravity of gasoline as 0.7. (57

Refrigeration and Air Conditioning Technology (MindTap Course List)
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter40: Typical Operating Conditions
Section: Chapter Questions
Problem 10RQ: The seasonal energy efficiency ratio (SEER) includes the energy used in the _____and _____cycles.
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A centrifugal pump is required to handle 50 lit/sec of gasoline against a net pressure of 4 kg/cm'. Determine the head in m of liquid and the HP required by the pump, if its overall efficiency is 62%. Take the specific gravity of gasoline as 0.7. (57 and 43) A centrifugal pump draws water from a sump through a vertical 15 cm pipe. The 3.5 m above water level in the sump. While pumping 35 lit/sec, gauges near the pump at entrance and discharge read 0.35 kg/cm and+1.8 kg/cm respectively. The discharge gauge is 0.5 m above the suction gauge. Determine the horsepower output of the pump. pump has a horizontal discharge pipe 10 cm diameter which is (10.82) To p. edict the performance of a loge centrifugal pump, its model, having the following specification, was made: P = 24 IIP H=8 m N=925 rpm Diameter of model pump impeller is 9 times smaller than that of the prototype. The prototype pump has to work against a head of 30 m. Find its working speed and HP required to drive it. Determine also the rate of flow of both the pumps. (35.2 m'/ sec, 134 rpm, 14,100 HP)
Transcribed Image Text:A centrifugal pump is required to handle 50 lit/sec of gasoline against a net pressure of 4 kg/cm'. Determine the head in m of liquid and the HP required by the pump, if its overall efficiency is 62%. Take the specific gravity of gasoline as 0.7. (57 and 43) A centrifugal pump draws water from a sump through a vertical 15 cm pipe. The 3.5 m above water level in the sump. While pumping 35 lit/sec, gauges near the pump at entrance and discharge read 0.35 kg/cm and+1.8 kg/cm respectively. The discharge gauge is 0.5 m above the suction gauge. Determine the horsepower output of the pump. pump has a horizontal discharge pipe 10 cm diameter which is (10.82) To p. edict the performance of a loge centrifugal pump, its model, having the following specification, was made: P = 24 IIP H=8 m N=925 rpm Diameter of model pump impeller is 9 times smaller than that of the prototype. The prototype pump has to work against a head of 30 m. Find its working speed and HP required to drive it. Determine also the rate of flow of both the pumps. (35.2 m'/ sec, 134 rpm, 14,100 HP)
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