diff options
Diffstat (limited to '534/CH12/EX12.8')
| -rw-r--r-- | 534/CH12/EX12.8/12_8_Glass_Cover.sce | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/534/CH12/EX12.8/12_8_Glass_Cover.sce b/534/CH12/EX12.8/12_8_Glass_Cover.sce new file mode 100644 index 000000000..c723347b9 --- /dev/null +++ b/534/CH12/EX12.8/12_8_Glass_Cover.sce @@ -0,0 +1,20 @@ +clear;
+clc;
+printf('FUNDAMENTALS OF HEAT AND MASS TRANSFER \n Incropera / Dewitt / Bergman / Lavine \n EXAMPLE 12.8 Page 761 \n')// Example 12.8
+
+// Total emissivity of cover glass to solar radiation
+
+T = 5800 ;//[K] temperature of surface
+e = .8;
+stfncnstt = 5.67*10^-8; //[W/m^2.K^4] Stefan-Boltzmann constant
+
+//From Table 12.1
+//For wl1 = .3 micro-m and T = 5800 K, At wl1*T = 1740 micro-m.K
+F0wl1 = .0335;
+//For wl1 = .3 micro-m and T = 5800 K, At wl2*T = 14500 micro-m.K
+F0wl2 = .9664;
+
+//Hence from equation 12.29
+t = .90*[F0wl2 - F0wl1];
+
+printf('\n Total emissivity of cover glass to solar radiation = %.2f',t);
\ No newline at end of file |