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+clc;clear;
+//Example 9.6
+
+//from 9.5
+Wsc=244.16;//compressor
+Wst=606.60;//turbine
+h1=300.19;
+h3=1395.17;
+
+//given data
+nC=0.8;
+nT=0.85;
+
+//calculations
+Win=Wsc/nC;
+Wout=nT*Wst;
+rbw=Win/Wout;
+disp(rbw,'back work ratio is');
+h2a=h1+Win;
+qin=h3-h2a;
+Wnet=Wout-Win;
+nth=Wnet/qin;
+disp(nth,'thermal efficency is');
+h4a=h3-Wout;
+//from A-17 at h4a
+T4a=853;
+disp(T4a,'turbine exit temperature in K is')