In: Mechanical Engineering
The diameter of the discharge and suction pipe of a boiler feed pump is 4 inches and 6 inches, respectively. The water delivered is 250 GPM and the temperature is 60 F. The discharge pressure near the pump is 90 psig and the suction is 12 in.hg vacuum. Find the total dynamic head if the discharge gage is located 3 ft above pump centerline and the vacuum gage connection to the suction pipe is 2 feet below the center of the pump. Assume that the head necessary to overcome the frictional resistance through the pump is 2.20 feet.