diff options
Diffstat (limited to '2063/CH1/EX1.22/1_22.sce')
| -rwxr-xr-x | 2063/CH1/EX1.22/1_22.sce | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/2063/CH1/EX1.22/1_22.sce b/2063/CH1/EX1.22/1_22.sce new file mode 100755 index 000000000..db9455ed3 --- /dev/null +++ b/2063/CH1/EX1.22/1_22.sce @@ -0,0 +1,16 @@ +clc
+clear
+//Input data
+r=12;//Compression ratio of an oil engine, working on the combustion cycle
+r1=1.4;//Isentropic ratio
+P1=1;//Pressure at the
+P3=35;//Pressure at the end of constant volume heat addition in bar
+
+//Calculations
+rho=1+(1/10)*(r-1);//Cut off ratio at 1/10th of the stroke
+P2=P1*(r)^r1;//Pressure at the end of isentropic compression in bar
+a=P3/P2;//Pressure ratio
+n=(1-(1/r^(r1-1))*(a*rho^r1-1)/((a-1)+(r1*a*(rho-1))))*100;//Air standard efficiency in percent
+
+//Output
+printf('The air standard efficiency of an oil engine working on the combustion cycle is %3.2f percent',n)
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