A pump supplies 40 L/min of water through 30 m of 2.54 cm galvanized pipe. The pipe has one fully open globe valve and two 90o standard elbows. Water is delivered at 140 kPa to a tank located 15 m above the pump intake. What is the pump motor power requirement if the combined pump and motor efficiency is 0.70? Assume the temperature of the water is at 20oC with kinematic viscosity and absolute viscosity at 1.006×10-6 m2/s and 0.9934×10-3 Ns/m2, respectively

Liquid flows at steady state at a rate of 2 lb/'s through a pump, which operates to raise the elevation of the liquid 100 ft from control volume inlet to exit. the liquid specific enthalpy at the inlet is 40.09 btu/lb and at the exit is 40.94 btub. the pump requires 3 btu/s of power to operate. if kinetic energy effects are negligible and gravitational acceleration is 32.174 tt/s, the heat transfer rate associated with this steady state process is most closely 1)-2,02 btu/s from the liquid to the surroundings 2)-3.98 btu/s from the surroundings to the liquid. 3)-4.96 btu/s from the surroundings to the liquid. 4)-1.04 btu/s from the liquid to the surroundings.