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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 /1244/CH4/EX4.1 | |
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initial commit / add all books
Diffstat (limited to '1244/CH4/EX4.1')
| -rwxr-xr-x | 1244/CH4/EX4.1/Example41.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/1244/CH4/EX4.1/Example41.sce b/1244/CH4/EX4.1/Example41.sce new file mode 100755 index 000000000..19c11d121 --- /dev/null +++ b/1244/CH4/EX4.1/Example41.sce @@ -0,0 +1,28 @@ +
+
+// Display mode
+mode(0);
+
+// Display warning for floating point exception
+ieee(1);
+
+clc;
+disp("Principles of Heat Transfer, 7th Ed. Frank Kreith et. al Chapter - 4 Example # 4.1 ")
+
+// Temperature of air in C is given as:
+Tinfinity = 20;
+// Temperature of surface in C is given as:
+Ts = 100;
+// Therefore avaerage temperature in degree C would be:
+Ta = (Ts+Tinfinity)/2;
+// From fig. 4.2 on page 232, it can be easily seen that (deltaT/deltaY) at
+// y=0 is -66.7 K/mm
+// From Table 28 in Appendix 2, at average temperature of air, thermal
+// conductivity in W/m-K is
+k = 0.028;
+
+//Therefore from eq. 4.1
+disp("The heat transfer coefficient is given by, as per Eq. 4.1, in W/m2K")
+// 1000 is added to convert from mm to m
+//heat transfer coefficient in W/m2K
+hc = ((-k*(-66.7))/(Ts-Tinfinity))*1000
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