Humid air is to be conditioned in a constant pressure process at 1 atm from 398C dry bulb and 50 percent relative humidity to 178C dry bulb and 10.88C wet bulb. The air is first passed over cooling coils to remove all of the moisture necessary to achieve the final moisture content and then is passed over heating coils to achieve the final state. (a) Sketch the psychometric diagram for the process.
(b) Determine the dew point temperature of the mixture at the inlet of the cooling coils and at the inlet of the heating coils.
(c) What is the net heat transfer for the entire process for this process, in kJ/kg dry air?

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.