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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 /1226/CH17/EX17.43 | |
| 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 '1226/CH17/EX17.43')
| -rwxr-xr-x | 1226/CH17/EX17.43/EX17_43.jpg | bin | 0 -> 136993 bytes | |||
| -rwxr-xr-x | 1226/CH17/EX17.43/EX17_43.sce | 38 |
2 files changed, 38 insertions, 0 deletions
diff --git a/1226/CH17/EX17.43/EX17_43.jpg b/1226/CH17/EX17.43/EX17_43.jpg Binary files differnew file mode 100755 index 000000000..07f5e2bf5 --- /dev/null +++ b/1226/CH17/EX17.43/EX17_43.jpg diff --git a/1226/CH17/EX17.43/EX17_43.sce b/1226/CH17/EX17.43/EX17_43.sce new file mode 100755 index 000000000..358cf780c --- /dev/null +++ b/1226/CH17/EX17.43/EX17_43.sce @@ -0,0 +1,38 @@ +clc;funcprot(0);//EXAMPLE 17.43
+// Initialisation of Variables
+I=210;.....................//Output of generator in A
+V=200;.....................//Generator voltage in V
+etag=0.82;.................//Generator efficiency
+mf=11.2;....................//Fuel used in kg/h
+C=42600;.......................//Calorific value of fuel in kJ/kg
+afr=18;....................//Air fuel ratio
+mc=580;.....................//Mass of water through calorimeter in kg/h
+delt=36;....................//Temperature raise in C
+tg=98;........................//Temperature of exhaust in C
+ta=20;.......................//Ambient temperature in C
+phcw=0.32;.....................//Heat lost to cooling jacket is 32% of heat supplied
+cpe=1.05;...................//Specific heat of exhause gases in kJ/kgK
+cpw=4.18;...................//Specific heat of water in kJ/kgK
+//Calculations
+pow=V*I;......................//Total power generated in W
+BP=(pow/1000)/etag;..................//Brake power in kW
+hf=(mf/60)*C;...................//Heat supplied to the engine
+hbp=BP*60;.........................//Heat equivalent of BP
+mg=(mf/60)*(afr+1);...............//Mass of exhaust gases formed per min in kg
+hg=((mc/60)*cpw*(delt))+(mg*cpe*(tg-ta));..........//Heat carried by exhaust gases per min
+hcw=phcw*hf;...................//Heat lost to cooling jacket
+ha=hf-(hcw+hg+hbp);...................//Unaccounted heat
+pf=100;pbp=(hbp/hf)*100;pcw=(hcw/hf)*100;pg=(hg/hf)*100;pa=(ha/hf)*100
+printf("\n\n")
+printf("HEAT BALANCE TABLE\n")
+printf("_______________________________________________________________________\n")
+printf("Item kJ Percent\n")
+printf("_______________________________________________________________________\n")
+printf("Heat supplied by fuel %d %f\n",hf,pf)
+printf("Heat absorbed in BP %d %f\n",hbp,pbp)
+printf("Heat taken away by cooling water %d %f\n",hcw,pcw)
+printf("Heat carried away by exhaust gases %d %f\n",hg,pg)
+printf("Unaccounted heat %d %f\n",ha,pa)
+printf("_____________________________________________________________________")
+
+
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