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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2420/CH3/EX3.9 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '2420/CH3/EX3.9')
| -rwxr-xr-x | 2420/CH3/EX3.9/3_9.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/2420/CH3/EX3.9/3_9.sce b/2420/CH3/EX3.9/3_9.sce new file mode 100755 index 000000000..3126c9359 --- /dev/null +++ b/2420/CH3/EX3.9/3_9.sce @@ -0,0 +1,24 @@ +clc
+clear
+//Initialization of variables
+r=1.75 //ft
+F1=72 //lb
+F2=24 //lb
+n=500 //rpm
+m=1.8 //lb
+mi=15 //min
+Qh=20000 //Btu/lb
+//calculations
+Bhp=2*%pi*r*F1*n/33000
+Fhp=2*%pi*r*F2*n/33000
+Ihp=Bhp+Fhp
+Fc=m*60/mi
+Bsfc=Fc/Bhp
+Isfc=Fc/Ihp
+etam=Bhp/Ihp *100
+etabt=Bhp*2545/(Fc*Qh)
+etait=Ihp*2545/(Fc*Qh)
+//results
+printf("Thermal efficiency = %d percent",etam)
+printf("\n Brake thermal effficiency = %.1f percent",etabt*100)
+printf("\n Indicated thermal effficiency = %.1f percent",etait*100)
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