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//Variable declaration:
//From example 17.18:
T = 250 //Base temperature of fin ( F)
h = 15 //Convection coefficient of heat transfer (Btu/h.ft. F)
w = 1 //Base width of fin (ft)
t = 1 //Thickness of fin (in)
H = 1/8 //Height of fin (in)
l = 1 //Length of fin (in)
Q = 357.2 //Heat transfer rate (Btu/h.ft)
//Calculation:
A = (l*w+t*w+H*w)/12 //Heat transfer area of fin (ft^2)
Qm = h*A*(T-70) //Maximum heat transfer rate (Btu/h.ft)
n = Q/Qm*100 //Fin efficiency
//Result:
printf("The fin efficiency is : %.1f %%",n)
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