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Diffstat (limited to '3685/CH19/EX19.12/Ex19_12.sce')
| -rw-r--r-- | 3685/CH19/EX19.12/Ex19_12.sce | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/3685/CH19/EX19.12/Ex19_12.sce b/3685/CH19/EX19.12/Ex19_12.sce new file mode 100644 index 000000000..214d10188 --- /dev/null +++ b/3685/CH19/EX19.12/Ex19_12.sce @@ -0,0 +1,21 @@ +clc
+// Given that
+p1 = 700 // Intake pressure of compressor in kPa
+t1 = 38 // Intake temperature in degree centigrade
+c = 0.4 // Ratio of cutoff volume to stroke volume
+p3 = 112 // Back pressure in kPa
+r = 0.85 // Ratio of area of actual indicator diagram to the outlined in the question
+n = 1.3 // Polytropic index
+R = 0.287
+m = 1.25 // Air mass in kg
+printf("\n Example 19.12\n")
+T1 = t1+273
+T2 = T1/((1/c)^(n-1))
+p2 = p1*(c^n)
+V2 = m*R*T2/p2
+v2 = V2/m
+A = R*T1 + R*(T1-T2)/(n-1) - p3*v2
+Io = A*r*m
+printf("\n Indicated output = %f kJ",Io)
+// The answer given in the book vary due to round off error
+
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