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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 /858/CH5/EX5.5 | |
| 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 '858/CH5/EX5.5')
| -rwxr-xr-x | 858/CH5/EX5.5/example_5.sce | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/858/CH5/EX5.5/example_5.sce b/858/CH5/EX5.5/example_5.sce new file mode 100755 index 000000000..d676a28bb --- /dev/null +++ b/858/CH5/EX5.5/example_5.sce @@ -0,0 +1,37 @@ +clc
+clear
+printf("example 5.5 page number 173\n\n")
+
+//to find the rate of heat loss through pipeline
+//resistance by pipeline
+
+d1=0.15 //in m
+d2=0.16 //in m
+l=1 //in m
+A1=3.14*d1*l;
+A2=3.14*d2*l
+Am1=(A2-A1)/log (A2/A1);
+x1=(d2-d1)/2;
+k1=50 //in W/mK
+R1=x1/(k1*Am1);
+
+//resistance by insulation
+d2=0.16 //in m
+d3=0.26 //in m
+l=1 //in m
+A2=3.14*d2*l;
+A3=3.14*d3*l
+Am2=(A3-A2)/log (A3/A2);
+x2=(d3-d2)/2;
+k2=0.08 //in W/mK
+R2=x2/(k2*Am2);
+R=R1+R2;
+
+printf("total resistance = %f K/W",R)
+
+T1=120; //in K
+T2=40; //in K
+delta_T=T1-T2;
+Q=delta_T/R;
+
+printf("\n\nheat loss = %f W/m",Q)
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