diff options
| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /914/CH11/EX11.1/ex11_1.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 '914/CH11/EX11.1/ex11_1.sce')
| -rwxr-xr-x | 914/CH11/EX11.1/ex11_1.sce | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/914/CH11/EX11.1/ex11_1.sce b/914/CH11/EX11.1/ex11_1.sce new file mode 100755 index 000000000..17592bd85 --- /dev/null +++ b/914/CH11/EX11.1/ex11_1.sce @@ -0,0 +1,29 @@ +clc;
+warning("off");
+printf("\n\n example11.1 - pg497");
+// given
+K_drywall=0.28; //[Btu/ft*degF] - thermal conductivity of dry wall
+K_fibreglass=0.024; //[Btu/ft*degF] - thermal conductivity of fibre glass
+K_concrete=0.5; //[Btu/ft*degF] - thermal conductivity of concrete
+T4=0; //[degF]
+T1=65; //[degF]
+deltaT=T4-T1; //[degF]
+a=1; //[ft^2] - assuming area of 1 ft^2
+deltax1=0.5/12; //[ft]
+deltax2=3.625/12; //[ft]
+deltax3=6/12; //[ft]
+R1=deltax1/(K_drywall*a); //[h*degF/Btu]
+R2=deltax2/(K_fibreglass*a); //[h*degF/Btu]
+R3=deltax3/(K_concrete*a); //[h*degF/Btu]
+qx=deltaT/(R1+R2+R3);
+q12=-qx;
+q23=-qx;
+q34=-qx;
+deltaT1=(-q12)*deltax1*(1/(K_drywall*a));
+T2=T1+deltaT1;
+deltaT2=(-q23)*deltax2*(1/(K_fibreglass*a));
+T3=T2+deltaT2;
+deltaT3=(-q34)*deltax3*(1/(K_concrete*a));
+T4=T3+deltaT3;
+printf("\n\n T1 = %f degF\n T2 = %f degF\n T3 = %f degF\n T4 = %f degF",T1,T2,T3,T4);
+
|