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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 /2870/CH15/EX15.6/Ex15_6.sce | |
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Diffstat (limited to '2870/CH15/EX15.6/Ex15_6.sce')
| -rwxr-xr-x | 2870/CH15/EX15.6/Ex15_6.sce | 52 |
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diff --git a/2870/CH15/EX15.6/Ex15_6.sce b/2870/CH15/EX15.6/Ex15_6.sce new file mode 100755 index 000000000..cc495a3f0 --- /dev/null +++ b/2870/CH15/EX15.6/Ex15_6.sce @@ -0,0 +1,52 @@ +clc;clear;
+//Example 15.6
+
+//given data
+mfuel=0.05;
+
+//from Table A-1
+Mair=29;
+MC=12;
+MH=2;
+
+//calculation
+//stochiometric reaction
+//C3H8 + ath(O2 + 3.76N2) = 3CO2 + 4H2O + 3.76athN2
+//O2 balance
+ath=3+5;
+//50 percent excess air and some CO in the products
+//C3H8 + 7.5(O2 + 3.76N2) = 2.7CO2 + 0.3CO + 4H2O + 2.65O2+ 28.2N2
+AF=7.5*4.76*Mair/(3*MC+4*MH);
+mair=AF*mfuel;
+disp(mair,'the mass flow rate of air in kg air/min');
+//from property tables
+//C3H8 designated as p
+hfp=-118910;
+//oxygen as o
+hfo=0;
+ho280=8150;
+ho298=8682;
+ho1500=49292;
+//nitrogen as n
+hfn=0;
+hn280=8141;
+hn298=8669;
+hn1500=47073;
+//water as w
+hfw=-241820;
+hw298=9904;
+hw1500=57999;
+//carbondioxode as c
+hfc=-393520;
+hc298=9364;
+hc1500=71078;
+//carbon monoxide as co
+hfco=-110530;
+hco298=8669;
+hco1500=47517;
+qout=1*(hfp)+7.5*(hfo+ho280-ho298)+28.2*(hfn+hn280-hn298)-2.7*(hfc+hc1500-hc298)-0.3*(hfco+hco1500-hco298)-4*(hfw+hw1500-hw298)-2.65*(hfo+ho1500-ho298)-28.2*(hfn+hn1500-hn298);
+//for kg of propane
+qout=qout/44;
+Qout=mfuel*qout/60;
+disp(Qout,'the rate of heat transfer from the combustion chamber in kW')
+
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