(Solved): Steam enters a turbine operating at steady state with a mass flow rate of 4600 kg/h. The turbine dev ...
Steam enters a turbine operating at steady state with a mass flow rate of 4600 kg/h. The turbine develops a power output of 1000 kW. At the inlet, the pressure is 60 bar, the temperature is 400C, and the velocity is 10 m/s. At the exit, the pressure is 0.1 bar, the enthalpy is 2345.4 kJ/kg and the velocity is 30 m/s. Calculate the rate of heat transfer between the turbine and surroundings, in kW.
To calculate the rate of heat transfer between the turbine and surroundings, we need to apply the First Law of Thermodynamics, which states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system: where?U is the change in internal energy, Q is the heat added to the system, W is the work done by the system.