Power in a Turbine: 30 bar to 0.2 bar, 80% Isentropic Efficiency, 300 KG/s

[jinxy1985]

Homework Statement

air at a pressure of 30 bar and a temperature of 400 degrees expands through a turbine to a pressure of 0.2 bar. if the isentropic efficency is 80% determine the power developed for a mass flow rate of 300 KG/s

Homework Equations

Cv=0.715 KJ/Kg. K, Cp= 1.004 KJ/Kg.K

The Attempt at a Solution

 

[RTW69]

Please attempt to solve this problem before asking for assistance. What are the temperature units C or K?

A h-s diagram will be helpful You are looking for work_actual.