Question

Nitrogen at 310 K and 0.7 MPa is stored in a very big tank. Connected to the tank through an initially closed valve is a turbine followed by a small tank that is initially under vacuum conditions. The volume of the small tank is 75m^3. When power is required, the valve is opened and the tank fills with nitrogen until the pressure is 0.7 MPa. The temperature in the tank is 260K at the end of the process. Determine the amount of work developed by the turbine in MJ.

Answer 1