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+// Y.V.C.Rao ,1997.Chemical Engineering Thermodynamics.Universities Press,Hyderabad,India.
+
+//Chapter-5,Example 14,Page 182
+//Title: Power output of turbine
+//================================================================================================================
+clear 
+clc
+
+//INPUT
+P=3;//pressure of superheated steam in MPa
+T_enter=300;//entrance temperature of superheated steam in degree celsius
+T_exit=45;//final temperature at which the steam leaves in degree celsisus
+m=1;//mass flow rate of steam in kg/s
+
+//CALCULATION
+
+//From steam tables corresponding to P and T_enter
+si=6.5422;//entropy of steam at the entrance in kJ/kgK
+hi=2995.1;//entahlpy of steam at the entrance in kJ/kg
+
+//From steam tables corresponding to T_exit
+sf=0.6383;//entropy of saturated liquid in kJ/kgK
+hf=188.35;//enthalpy of saturated liquid in kJ/kg
+sg=8.1661;//entropy of saturated vapour in kJ/kgK
+hg=2583.3;//entahlpy of saturayed vapour in kJ/kg
+
+Xe=(si-sf)/(sg-sf);//calculation of quality of steam at the exit (no unit)
+he=((1-Xe)*hf)+(Xe*hg);//calculation of enthalpy of steam at the exit in kJ/kg
+Ws=-m*(he-hi);//calculation of power output from turbine using the first law of thermodynamics on the control-volume in kW
+
+//OUTPUT
+mprintf("\n The power output from the turbine=%0.1f kW\n",Ws);
+
+
+//===============================================END OF PROGRAM===================================================