Example (cont.)
We can model the pot handle as an extended surface. Assume that there is no heat transfer at the free end of the handle. The condition matches that specified in the fins Table, case B.
h=5 W/ m2 ?C, P=2W+2t=2(0.03+0.005)=0.07(m), k=237 W/m ?C, AC=Wt=0.00015(m2), L=0.2(m)
Therefore, m=(hP/kAC)1/2=3.138,
M=?(hPkAC)(Tb-T?)=0.111?b=0.111(100-25)=8.325(W)