Annular fin

 

The following commands are used to evaluate the thermal resistance of an annular fin:

 

k=30; h=1000; ri=.03; ro=.045; t=.003; Tb=100; Tinf=20;

 

% 'c' denotes the convective tip condition ('a' is for adiabatic)

[Rfin Bi] = AnnFinApprox(h,k,ri,ro,t,'c')

Rfin =  0.36290

Bi =  0.10000

 

Qfin = (Tb-Tinf)/Rfin  % heat transfer rate in watts through fin

Qfin =  220.45