diff options
Diffstat (limited to '3720/CH12/EX12.1')
| -rw-r--r-- | 3720/CH12/EX12.1/Ex12_1.sce | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/3720/CH12/EX12.1/Ex12_1.sce b/3720/CH12/EX12.1/Ex12_1.sce new file mode 100644 index 000000000..450f9e65c --- /dev/null +++ b/3720/CH12/EX12.1/Ex12_1.sce @@ -0,0 +1,22 @@ +//Example 12_1
+clc;clear;funcprot(0);
+// Given values
+T_1=255.7;// The ambient air temperature in K
+P_1=54.05;//The atmospheric pressure in kPa
+V_1=250;// m/s
+h=5000;// m
+P_r=8;// Pressure ratio of the compressor
+// Properties
+C_p=1.005;//The constant-pressure specific heat C_p in kJ/kg.k
+k=1.4;// The specific heat ratio
+
+//Calculation
+//(a)
+T_01=T_1+(V_1^2/(2*C_p*1000));//The stagnation temperature at the compressor inlet in K
+P_01=P_1*(T_01/T_1)^(k/(k-1));//kPa
+printf('The stagnation pressure at the compressor inlet,P_01=%0.2f kPa\n',P_01);
+//(b)
+// P_r=(P_02/P_01)
+T_02=T_01*(P_r)^((k-1)/k);//The stagnation temperature of air at the compressor exit in K
+W_in=C_p*(T_02-T_01);//the compressor work per unit mass of air in kJ/kg
+printf('The compressor work per unit mass of air,W_in=%0.1f kJ/kg\n',W_in);
|