diff options
Diffstat (limited to '965/CH2/EX2.71/71.sci')
| -rw-r--r-- | 965/CH2/EX2.71/71.sci | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/965/CH2/EX2.71/71.sci b/965/CH2/EX2.71/71.sci new file mode 100644 index 000000000..846fe0ce6 --- /dev/null +++ b/965/CH2/EX2.71/71.sci @@ -0,0 +1,16 @@ +clc;
+clear all;
+disp("Critical radius of insulation")
+k=0.155;// W/(m*C)
+t1=65;//degree C
+tair=20;//degree C
+r1=10/2;//mm
+ho=8.5;// W/(m^2*K)
+rc=1000*k/ho;//mm
+t=rc-r1;
+disp("mm",rc,"critical radius of insulation =")
+disp("mm",t,"thickness upto which rubber insulation is effective in heat dissipation t =")
+Rthcd=(log(rc/r1))/k
+Rthcv=1000/(ho*rc)
+Ql=2*3.1416*(t1-tair)/(Rthcd+Rthcv);
+disp("W/m",Ql,"with insulation Ql=")
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