diff options
Diffstat (limited to '2006/CH8/EX8.1')
-rwxr-xr-x | 2006/CH8/EX8.1/ex8_1.sce | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/2006/CH8/EX8.1/ex8_1.sce b/2006/CH8/EX8.1/ex8_1.sce new file mode 100755 index 000000000..f4ed1e1e9 --- /dev/null +++ b/2006/CH8/EX8.1/ex8_1.sce @@ -0,0 +1,25 @@ +clc;
+TH=311.06; // Source temperature in degree celcius
+pb=10; // Boiler pressure in MPa
+TL=32.88; // Sink temperature in degree celcius
+pc=5; // Condenser pressure in kPa
+// From steam tables at pb
+h2=1407.56; // specific enthalpy in kJ/kg
+h3=2724.7; // specific enthalpy in kJ/kg
+s2=3.3596; // specific entropy in kJ/kg K
+s3=5.6141; // specific entropy in kJ/kg K
+// From steam tables at pc
+hf=137.82; hfg=2423.7; // specific enthalpy in kJ/kg
+sf=0.4764; sfg=7.9187; // specific entropy in kJ/kg K
+x1=(s2-sf)/sfg; // quality of steam at state 1
+x4=(s3-sf)/sfg; // quality of steam at state 4
+h1=hf+x1*hfg; // specific enthalpy at state 1
+h4=hf+x4*hfg; // specific enthalpy at state 4
+wT=h3-h4; // Turbine work
+wC=h2-h1; // Compressor work
+wnet=wT-wC; // 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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