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diff --git a/2837/CH19/EX19.12/Ex19_12.sce b/2837/CH19/EX19.12/Ex19_12.sce
new file mode 100755
index 000000000..50de73b37
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+++ b/2837/CH19/EX19.12/Ex19_12.sce
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+clc
+clear
+//Initalization of variables
+n=1.4
+t1=540 //R
+tmax=1500 //F
+pr=5
+cp=0.24
+p1=14 //psia
+p3=70 //psia
+w2=75.9 //Btu/lb
+Qa=265 //Btu/lb
+//calculations
+pint=p1*sqrt(pr)
+t6=(tmax+460)/(p3/pint)^((n-1)/n)
+t8=(tmax+460)/(pint/p1)^((n-1)/n)
+work=cp*(tmax+460-t6)
+w22=2*work
+net=w22-w2
+Qb=cp*(tmax+460-t6)
+Qt=Qa+Qb
+eta=net/Qt*100
+//results
+printf("Thermal efficiency = %.1f percent",eta)