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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /965/CH2/EX2.46 | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '965/CH2/EX2.46')
| -rw-r--r-- | 965/CH2/EX2.46/46.sci | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/965/CH2/EX2.46/46.sci b/965/CH2/EX2.46/46.sci new file mode 100644 index 000000000..68e0ec7f1 --- /dev/null +++ b/965/CH2/EX2.46/46.sci @@ -0,0 +1,24 @@ +clc;
+clear all;
+disp("heat flow per length")
+r1=110;//mm outer radius of pipe
+r2=r1+50;//mm outer radius of insulation
+//k=0.06(1+0.0018*t);// W/(m*C)
+ti=280;// degree C
+to=50;// degree C
+
+km=0.06*(1+(0.0018/2)*(ti+to));
+km
+Q=2*3.1416*km*(ti-to)/(log (r2/r1));
+disp("W/m",Q,"heat transfer per unit length = ")
+
+// to calcuate the temperature at the mid thickness
+//Q=2*3.1416*k*(ti-tmt)/((ln (rmt/r1));
+rmt=(r1+r2)/2;
+//k=0.06(1+0.0018*(t1+tmt)/2)
+//Q=2*3.1416*0.06(1+0.0018*(t1+tmt)/2)*(ti-tmt)/((ln (rmt/r1))
+//0.0009*tmt^2+tmt-187.56
+tmt=(-1+(1+4*0.0009*187.56)^0.5)/(2*0.0009);
+disp("degree C",tmt,"The temperature at the mid thickness =")
+
+
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