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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/CH2/EX2.21 | |
| 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/CH2/EX2.21')
| -rwxr-xr-x | 1073/CH2/EX2.21/2_21.sce | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/1073/CH2/EX2.21/2_21.sce b/1073/CH2/EX2.21/2_21.sce new file mode 100755 index 000000000..da1f59cfa --- /dev/null +++ b/1073/CH2/EX2.21/2_21.sce @@ -0,0 +1,18 @@ +//Exaample2.21 +//Given +k1=0.7 //common brick W/((m.K) +k2=0.48 //gypsum layer [W/(m.K) +k3=0.065 //Rockwool [W/m.K] +//Heat loss with insulatiob will be 20% of without insulation +A=1 //sq m +x1=0.1 //[m] +x2=0.04 //[m] +R1=x1/(k1*A) //K/W +R2=x2/(k2*A) //K/W +R=R1+R2 //K/W +//R3=x3/(k3*A) +QbyQd=0.2 +sigRbyRd=QbyQd +x3=(R/QbyQd-R)/15.4 //m +x3=x3*1000 //[mm] +printf("Thickness of rockwool insulation =%f mm",x3)
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