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diff --git a/2417/CH8/EX8.9/Ex8_9.sce b/2417/CH8/EX8.9/Ex8_9.sce new file mode 100755 index 000000000..ee72269c0 --- /dev/null +++ b/2417/CH8/EX8.9/Ex8_9.sce @@ -0,0 +1,17 @@ +//scilab 5.4.1
+clear;
+clc;
+printf("\t\t\tProblem Number 8.9\n\n\n");
+// Chapter 8 : Vapor Power Cycles
+// Problem 8.9 (page no. 388)
+// Solution
+
+//The Mollier chart provides a convenient way of solving this problem.Expanding from 980F,400 psia,s=1.7567 to 200 psia yields a final enthalpy of 1413 Btu/lbm.Expanding from 200 psia ans an enthalpy of 1515 Btu/lbm to 14.696 psia yields a final enthaply of 1205 Btu/lbm.
+h4=1515; //Unit:Btu/lbm //enthalpy
+h5=1205; //Unit:Btu/lbm //enthalpy
+h7=1413; //Unit:Btu/lbm //enthalpy
+h1=180.15; //Unit:Btu/lbm //enthalpy
+nreheat=((h4-h5)+(h4-h7))/((h4-h1)+(h4-h7)); //The efficiency of the reheat cycle
+printf("The efficiency of the reheat cycle is %f percentage",nreheat*100);
+//It is apparent that for the conditions of this problem,the increase in efficiency is not very large.The final condition of the fluid after the second expansion is superheated steam at
+//14.696 psia.By condensing at this relatively high pressure condition,a large amount of heat is rejected to the condenser cooling water.7
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