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+//Ques 1

+//To determine the efficiency of Rankine cycle

+clc

+clear

+//1-Inlet state of pump

+//2-Exit state of pump

+P2=2000;//Exit pressure in kPa

+P1=10;//Inlet pressure in kPa

+v=0.00101;//specific weight of water in m^3/kg

+wp=v*(P2-P1);//work done in pipe in kJ/kg

+h1=191.8;//Enthalpy in kJ/kg from table

+h2=h1+wp;//enthalpy in kJ/kg

+//2-Inlet state for boiler

+//3-Exit state for boiler

+h3=2799.5;//Enthalpy in kJ/kg

+//3-Inlet state for turbine

+//4-Exit state for turbine

+//s3=s4(Entropy remain same)

+s4=6.3409;//kJ/kg

+sf=0.6493;//Entropy at liquid state in kJ/kg

+sfg=7.5009;//Entropy difference for vapor and liquid state in kJ/kg

+x4=(s4-sf)/sfg;//x-factor

+hfg=2392.8;//Enthalpy difference in kJ/kg for turbine

+h4=h1+x4*hfg;//Enthalpy in kJ/kg

+

+nth=((h3-h2)-(h4-h1))/(h3-h2);

+printf('Percentage efficiency = %.1f ',nth*100);
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