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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 /1073/CH4/EX4.11/4_11.sce | |
| 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 '1073/CH4/EX4.11/4_11.sce')
| -rwxr-xr-x | 1073/CH4/EX4.11/4_11.sce | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/1073/CH4/EX4.11/4_11.sce b/1073/CH4/EX4.11/4_11.sce new file mode 100755 index 000000000..51514e282 --- /dev/null +++ b/1073/CH4/EX4.11/4_11.sce @@ -0,0 +1,22 @@ +clc;
+clear;
+//Example4.11
+sigma=5.67*10^-8 //W/(m^2.K^4)
+e1=0.3;
+e2=e1;
+D1=0.3 //[m]
+D2=0.5 //[m]
+T1=90 //[K]
+T2=313 //[K]
+A1=%pi*D1^2 //Area in [sq m]
+A2=%pi*D2^2//Area in [sq m]
+Q1=sigma*A1*(T1^4-T2^4)/(1/e1+(A1/A2)*(1/e2-1)) //[W]
+Q1=abs(Q1); //Absolute value in [W]
+printf("\n Rate of heat flow due to radiation is %f W",Q1);
+//When Aluminium is used
+e1=0.05
+e2=0.5
+Q2=sigma*A1*(T1^4-T2^4)/(1/e1+(A1/A2)*(1/0.3-1)) //[W]
+Q2=abs(Q2) //Absolute value in [W]
+Red=(Q1-Q2)*100/Q1 //Percent reduction
+printf("\n Reduction in heat flow will be %f percent ",Red);
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