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Diffstat (limited to '3685/CH20/EX20.12/Ex20_12.sce')
-rw-r--r-- | 3685/CH20/EX20.12/Ex20_12.sce | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/3685/CH20/EX20.12/Ex20_12.sce b/3685/CH20/EX20.12/Ex20_12.sce new file mode 100644 index 000000000..c811e2494 --- /dev/null +++ b/3685/CH20/EX20.12/Ex20_12.sce @@ -0,0 +1,26 @@ +clc
+// Given that
+p1 = 0.95 // Pressure in bar
+t1 = 25 // Temperature in degree centigrade
+p2 = 2 // Delivery pressure in bar
+r = 18 // Air fuel ratio
+t3 = 600 // Temperature of gasses leaving the engine in degree centigrade
+p3 = 1.8 // Pressure of gasses leaving the engine in bar
+p4 = 1.04 // Pressure at the inlet of turbine in bar
+n_c = 0.75 // Efficiency of compresor
+n_t = 0.85 // Efficiency of turbine
+Cp = 1.005 // Heat capacity of air in kJ/kgK
+Cp_ = 1.15 // Heat capacity of gasses in kJ/kgK
+gama = 1.4 // Adiabatic index for air
+printf("\n Example 20.12\n")
+T2_s = (t1+273)*(p2/p1)^((gama-1)/gama)
+T2 = (t1+273)+((T2_s-(t1+273))/n_c)
+Wc = Cp*(T2-(t1+273))
+T4_s = (t3+273)*((p4/p3)^((gama-1)/gama))
+T4 = (t3+273)-((t3+273)-T4_s)*n_t
+Wt = (1+(1/r))*Cp_*((t3+273)-T4)
+n = (Wt-Wc)/Wt
+printf("\n Power lost as a percentage of the power produced by the turbine = %f percent",n*100)
+
+
+
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