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Therma fluids 11 - + to page Page View All Read aloud Add notes 1. Water...

Question

Therma fluids 11 - + to page Page View All Read aloud Add notes 1. Water...
therma fluids


11 - + to page Page View All Read aloud Add notes 1. Water is being pumped from a large pressurized tank at a rate of 200 gpm
11 - + to page Page View All Read aloud Add notes 1. Water is being pumped from a large pressurized tank at a rate of 200 gpm. The water in the tank is at 80°F. The suction line of the centrifugal pump is made of 4-nominal cast iron pipe. The total length of the suction line is 100 ft. The net positive suction head required by the pump is 7 ft. of water. Determine the largest value of zs that will not produce cavitation in the pump. The pressure of the air above the water in the tank is 5 psig. Include minor losses.

Answers

Given data NSPH = 766 Pressure of air, P = 5 psig. For 80°F, Specific gravity, 5=0.998 ? from Table Vapour pressure, Pv = 0.5The table is given below.

4.4 10.0 15.6 21.1 26.7 32.2 37.8 SPECIFIC GRAVITY 60°F Reference 1.002 1.001 1.001 1.000 .999 .998 .996 .994 WEIGHT (Lb/Cu F


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