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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 /551/CH15/EX15.2 | |
| 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 '551/CH15/EX15.2')
| -rwxr-xr-x | 551/CH15/EX15.2/2.sce | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/551/CH15/EX15.2/2.sce b/551/CH15/EX15.2/2.sce new file mode 100755 index 000000000..13c3a1d78 --- /dev/null +++ b/551/CH15/EX15.2/2.sce @@ -0,0 +1,29 @@ +clc
+t1=1325; //0C
+t2=1200; //0C
+t3=25; //0C
+L=0.32; //m
+k_A=0.84; //W/m 0C
+k_B=0.16; //W/m 0C
+
+//L_B=0.32-L_A
+//(t1-t2)/(L_A/k_A)=(t1-t3)/((L_A/k_A + L_B/k_B)
+
+L_A=(t1-t2)*k_A/k_B*L/((t1-t3)-(t1-t2)*k_A/k_A+(t1-t2)*k_A/k_B); //m
+disp("L_A=")
+disp(L_A*1000)
+disp("mm")
+
+L_B=0.32-L_A; //m
+disp("L_B")
+disp(L_B*1000)
+disp("mm")
+
+
+disp("(ii) Heat loss per unit area =")
+q=(t1-t2)/L_A*k_A;
+disp(q)
+disp("W/m^2")
+
+
+disp("If another layer of insulating material is added, the heat loss from the wall will reduce ;consequently the temperature drop across the fire brick lining will drop and the interface temperature t2 will rise. As the interface temperature is already fixed. Therefore, a satisfactory solutionwill not be available by adding layer of insulation.")
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