Aflowrate measuring device is installed in a horizontal pipe through which water is flowing. a u-tube manometer is connected to the pipe through pressure taps located 3 in. on either side of the device. the gage fluid in the manometer has a specific weight of 112 lb/ft3. determine the differential reading of the manometer corresponding to a pressure drop between the taps of 0.5 lb/in2.

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.