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clc;
TH=311.06; // Source temperature in degree celcius
p2=10; // Boiler pressure in MPa
TL=32.88; // Sink temperature in degree celcius
p1=5; // Condenser pressure in kPa
// From steam tables at p2
h3=2724.7; // specific enthalpy in kJ/kg
s3=5.6141; // specific entropy in kJ/kg K
// From steam tables at p1
hf=137.82; hfg=2423.7; // specific enthalpy in kJ/kg
sf=0.4764; sfg=7.9187; // specific entropy in kJ/kg K
x4=(s3-sf)/sfg; // quality of steam at state 4
h4=hf+x4*hfg; // specific enthalpy at state 4
h1=137.82; // specific enthalpy at state 1 in kJ/kg
s1=0.4764; // specific entropy at state in kJ/kgK
v1=0.001005; // specific volume in m^3/kg
wp=abs (v1*(p2*10^3-p1)); // Pump work (absolute value)
h2=h1+wp; // specific enthalpy at state 2
wT=h3-h4; // Turbine work
wnet=wT-wp; // Net work output
qH=h3-h2; // Heat added
rw=wnet/wT; // Ratio of net work to trbine work
eff_th=wnet/qH; // Thermal efficiency
SSC=3600/wnet; // specific steam consumption
disp ("kg/kWh",SSC,"specific steam consumption =","%",eff_th*100,"Thermal efficiency =",rw,"Ratio of net work to trbine work =");
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