In a simple ideal rankine cycle, water is used as the working fluid. the cycle operates with pressures of 95.7 kpa in the boiler and 0.19 kpa in the condenser. what is the minimum temperature required at the turbine inlet, so that the quality of the steam at the turbine outlet is not less than 85%. what would be the thermal efficiency of the cycle.

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.