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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 /3516/CH2/EX2.3 | |
| 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 '3516/CH2/EX2.3')
| -rw-r--r-- | 3516/CH2/EX2.3/Ex2_3.sce | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/3516/CH2/EX2.3/Ex2_3.sce b/3516/CH2/EX2.3/Ex2_3.sce new file mode 100644 index 000000000..75d6536a7 --- /dev/null +++ b/3516/CH2/EX2.3/Ex2_3.sce @@ -0,0 +1,16 @@ +clc
+//page 15
+printf("\t example 2.3 \n");
+printf("\t approximate values are mentioned in the book \n");
+Lair=0.25/12; // thickness of air film,ft
+Kair=0.0265; // thermal conductivity of air at 572F,Btu/(hr)*(ft^2)(F/ft)
+A=1; // surface area,ft^2
+Rair=Lair/(Kair*(A)); // resistance offered by air film, (hr)(F)/Btu
+printf("\t resistance offered by air film %.2f (hr)(F)/Btu \n",Rair);
+R=4.45; // resistance from previous example 2.2,(hr)(F)/Btu
+Rt=(R)+Rair; // total resistance,(hr)(F)/Btu
+printf("\t total resistance %.2f (hr)(F)/Btu \n",Rt);
+Ta=1600; // temperature of inner wall,F
+Tb=125; // temperature of outer wall,F
+Q=(1600-125)/Rt; // heat loss, Btu/hr
+printf("\t heat loss %.2f Btu/hr \n",Q);
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