Question

Saturated vapor steam enters a well-insulated turbine at 300^oC. The mass flow rate is 1.00 kg/s and the exit pressure is 50 kPa. Determine the final state of the steam if the turbine power output is 400 kW.

a). What is the amount of heat transfer in or out the turbine ?

b). Explain or show your calculation for your answer in a).   

c). What is the substance that you use to look for pure substance properties ?

d). What is the equation of conservation of energy for solving this problem? Indicate each symbol in your equation.

e). Find the enthalpy of saturated vapor steam at 300 °C. Explain how you find the enthalpy, such as the database you use, the steps leads to the answer.

f). Find the enthalpy of saturated liquid, Hf, and enthalpy of saturated vapor, Hg, at 50 kPa.

g). The given work output is 400 kW. Is this a positive or negative value in your equation of conservation of energy? Explain your answer.

h). Determine the final state of the steam, show your work step by step for credits

Answer 1