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diff --git a/647/CH5/EX5.3/Example5_3.sce b/647/CH5/EX5.3/Example5_3.sce
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+clear;
+clc;
+
+// Example: 5.3
+// Page: 151
+
+printf("Example: 5.3 - Page: 151\n\n");
+
+// Solution
+
+//*****Data*****//
+Th = 650 + 273;// [K]
+Tl = 30 + 273;// [K]
+Qh = 585;// [kJ/cycle]
+//*************//
+
+// Solution (a)
+// From Eqn. (5.9)
+eta = (Th - Tl)/Th;
+printf("(a) The efficiency of the Carnot engine is %.1f %%\n",eta*100);
+
+// Soluton (b)
+// From the knowledge of the ratio of heat and temperature between the two regions:
+Ql = Qh*Tl/Th;// [kJ]
+printf("(b) Heat released to cold reservoir is %d kJ\n",Ql);
+\ No newline at end of file