diff options
Diffstat (limited to '3685/CH8/EX8.17/Ex8_17.sce')
| -rw-r--r-- | 3685/CH8/EX8.17/Ex8_17.sce | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/3685/CH8/EX8.17/Ex8_17.sce b/3685/CH8/EX8.17/Ex8_17.sce new file mode 100644 index 000000000..523db7b5e --- /dev/null +++ b/3685/CH8/EX8.17/Ex8_17.sce @@ -0,0 +1,20 @@ +clc
+cv = 0.718 // Specific heat capacity of air in kJ/kg
+T2 = 500 // Final temperature of air in K
+T1 = 300// Initial temperature of air in K
+m = 1 // Mass of air in kg
+T0 = 300 // Ambient temperature
+// Case (a)
+printf("\n Example 8.17")
+Sua = cv*log(T2/T1) // Entropy change of universe
+Ia = T0*Sua // irreversibility
+printf("\n The irreversibility in case a is %f kJ/kg",Ia)
+
+// Case (b)
+Q = m*cv*(T2-T1) // Heat transfer
+T = 600 // Temperature of thermal reservoir in K
+Sub = Sua-(Q/T) // Entropy change of universe
+Ib = T0*Sub // irreversibility
+printf("\n The irreversibility in case b is %f kJ/kg",Ib)
+//The answers vary due to round off error
+
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