ABSTRACT
Finned tubes are widely used in boilers, economizers, superheaters, and other heat-transfer devices. Estimating their surface area involves solving the following complex equation [I]:
nn (nd)A = 24 [4dh+4h 2+2bd+4bh]+ 12 (I-nb) (1) where A = surface area of finned tube, ft2/ft (including area of fins and tube
surface) b = fin thickness, in. d = tube outer diameter, in. h = fin height, in. n = fin density, fins/in.
