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diff --git a/1427/CH2/EX2.7/2_7.sce b/1427/CH2/EX2.7/2_7.sce
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+//ques-2.7
+//Calculating Higher and Lower calorific value
+clc
+V=0.1;//Volume of gas used (in kL)
+W=25;//Weight of water heated (in kg)
+t1=20;//Inlet temperature
+t2=33;//Outlet temperature
+m=0.025;//Weight of steam condensed (in kg)
+L=580;//Latent heat of condensation (in kcal/kg)
+HCV=(W*(t2-t1))/V;//Higher calorific value
+LCV=HCV-(m/V)*L;//Lower calorific value
+printf("Higher calorific value is %d kcal/kL and Lower calorific value is %d kcal/kL.\n",HCV,LCV);