Consider a simple Brayton/gas cycle using air as the working fluid; has a pressure ratio of 12; has a maximum cycle temperature of 600 degrees C; and operates the compressor inlet at 90 kPa and 15 degrees C. Compressor and turbine isentropic efficiency is 90 percent. Use Cp as 1.005 kJ/kg. K. Find net work done by this cycle, ignoring heat addition. Write your answer below.

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.