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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 /2063/CH7/EX7.12/7_12.sce | |
| 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 '2063/CH7/EX7.12/7_12.sce')
| -rwxr-xr-x | 2063/CH7/EX7.12/7_12.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/2063/CH7/EX7.12/7_12.sce b/2063/CH7/EX7.12/7_12.sce new file mode 100755 index 000000000..9ac9a1dc9 --- /dev/null +++ b/2063/CH7/EX7.12/7_12.sce @@ -0,0 +1,24 @@ +clc
+clear
+//Input data
+d=0.15;//Diameter of the piston in m
+l=0.19;//Length of the stroke in m
+V=0.00091;//Clearance volume in m^3
+N=250;//Speed of the engine in rpm
+M=6.5;//Indicated mean effective pressure in bar
+c=6.3;//Gas consumption in m^3/hr
+H=16000;//Calorific value of the has in kJ/m^3
+r1=1.4;//Polytropic index
+
+//Calculations
+Vs=(3.14*d^2*l)/4;//Swept volume in m^3
+Vt=Vs+V;//Total cylinder volume in m^3
+r=Vt/V;//Compression ratio
+na=(1-(1/r^(r1-1)))*100;//Air standard efficiency in percent
+A=(3.14*d^2)/4;//Area of the bore in m
+I=(M*10^5*l*A*N)/(1000*60);//Indicated power in kW
+Hs=(c*H)/(60*60);//Heat supplied per second
+nt=(I/Hs)*100;//Indicated thermal efficiency in percent
+
+//Output
+printf('(a)The air standard efficiency is %3.1f percent\n (b)Indicated power is %3.3f kW\n (c)Indicated thermal efficiency is %3.1f percent',na,I,nt)
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