Question

Thermodynamics

Can someone please explain how they solved for V1 an V2

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2- 338Kpa : 22.5m 1000 69 PuMMP 2. Pg 20 920

A proposed water tank on the sixth floor (roof top) of the UTPA administration building would be used to supply pressurized water for the campus. A pump fills the tank at a rate of 13.2 kg/s. What size motor (hp) is needed to operate the pump given the data below? The motor size (hp) must be 20% greater than the required pump work. Note: Give the motor size as a positive value. The pump includes the riser pipe to the tank. There is no heat transfer from the pump to the surroundings (i.e., adiabatic conditions). Pump Inlet Temperature = 20oC Pump Inlet Pressure = 142 kPa Pump Inlet Diameter = 10 cm Pump Inlet Elevation = 22.5 m Pump Exit Temperature = 20oC Pump Exit Pressure = 338 kPa Pump Exit Diameter = 5.1 cm Pump Exit Elevation = 43.3 m

Answer 1

D1% 10 CM rn - 13-2 s/s 3.2 Fs (given) rn