Steam at 1 MPa 5828oC expands in a turbine to 001 MPa If the

Steam at 1 MPa, 582.8oC, expands in a turbine to 0.01 MPa. If the process is isentropic, find the temperature (oC) at the exit of the turbine. The final answer is 45.81

Solution

given P1= 1MPa T1 =582.8^oC and the given process is isentropic

P2=0.01MPa steam expands i.e the volume increases the pressure decreases

initial condition is supersaturated steam

it changes to changes to saturated steam

therefore from steam tables.. saturated steam at P2=0.01MPa

the saturated temp= T2= exit temperature =45.8⁰C