Air enters an adiabatic compressor at 100 kPa and 17 ºC at a rate of 2.4 m^3/s, and itexits at 257 ºC. The compressor has an isentropic efficiency of 84 percent. Neglecting the changes in kinetic and potential energies, determine the exit pressure of the air and the power required to drive the compressor. Use constant specific heatsfor air (Cp=1.005 kJ/kgK, γ=1.4, R =0.287 kJ/kgK)

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.