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diff --git a/3821/CH11/EX11.3/Example11_3.sce b/3821/CH11/EX11.3/Example11_3.sce new file mode 100644 index 000000000..6200c2f09 --- /dev/null +++ b/3821/CH11/EX11.3/Example11_3.sce @@ -0,0 +1,28 @@ +///Chapter No 11 Steam Boilers
+////Example 11.3 Page No 230
+///Find mass of evaporation
+//Input data
+clc;
+clear;
+ms=2500; //Saturated steam per bour in Kg
+x=1;
+P=15; //Boiler pressure in bar
+Tw=25; //Feed water entering in degree celsius
+mf=350; //Coal burnt in Kg/bour
+CV=32000; //Calorific value in Kj/Kg
+
+//Calculation
+//steam table
+hfw=104.77; //In KJ/Kg
+hf=844.66; //In KJ/Kg
+hfg=1945.2; //In KJ/Kg
+hg=2789.9; //In KJ/Kg
+hs=2789.9; //Enthalpy of dry steam in KJ/Kg
+me=ms/mf; //mass of evaporation
+E=((me*(hs-hfw))/2257); //Equivalent evaporation in Kg/Kg ofcoal
+etaboiler=((me*(hs-hfw))/CV)*100; //Boiler efficiency in %
+
+//Output
+printf('mass of evaporation= %f \n',me);
+printf('Equivalent evaporation= %f Kg/Kg of coal\n',E);
+printf('Boiler efficiency= %f percent \n',etaboiler);
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