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-rw-r--r--3685/CH19/EX19.8/Ex19_8.sce22
-rw-r--r--3685/CH19/EX19.8/Ex19_8.txt7
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diff --git a/3685/CH19/EX19.8/Ex19_8.sce b/3685/CH19/EX19.8/Ex19_8.sce
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+clc
+// Given that
+V = 4 // Volume flow rate in m^3/min
+p1 = 1.013 // Pressure in bar
+t1 = 15 // Temperature in degree centigrade
+N = 250 // Speed in RPM
+p4 = 80// Delivery pressure in bar
+v = 3 //Speed of piston in m/sec
+n_mech = .75 // Mechanical efficiency
+n_vol = .8 // Volumetric efficiency
+n = 1.25 // Polytropic index
+printf("\n Example 19.8\n")
+T1 = t1+273
+p2 = sqrt(p1*p4)
+W = (2*n/(n-1))*(p1*100/n_mech)*(V/60)*((p2/p1)^((n-1)/n) - 1)
+L = v*60/(N*2)
+Vs = V/N
+D_LP = sqrt(Vs*V/(%pi*L*n_vol))
+D_HP = D_LP*sqrt(p1/p2)
+printf("\n Minimum power required by the compressure is %f kW,\n Bore of the compressure in low pressure side is %f cm,\n Bore of the compressure in high pressure side is %f cm,\n Stroke of the compressure is %d cm",W,D_LP*100,D_HP*100,L*100)
+//The answers vary due to round off error
+
diff --git a/3685/CH19/EX19.8/Ex19_8.txt b/3685/CH19/EX19.8/Ex19_8.txt
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+
+ Example 19.8
+
+ Minimum power required by the compressure is 49.337005 kW,
+ Bore of the compressure in low pressure side is 26.596152 cm,
+ Bore of the compressure in high pressure side is 8.921722 cm,
+ Stroke of the compressure is 36 cm \ No newline at end of file