ABSTRACT
If fin length, mm (x 0.03937 = in.) I, fin segment length, mm (x 0.03937 = in.) n, fins per meter, 11m (x 0.0254 = l/in.) N, number of tube rows PI longitudinal pitch or spacing of tubes, mm (x 0.03937 = in.) Pr transverse pitch, or spacing of tubes, mm (x 0.03937 = in.) P,\ center-to-center spacing between tube rows, mm (x 0.03937 = in.) Re Reynolds number, Gcd; x 10-31/lb (Gndo/12/lb) I, average fin thickness, mm (x 0.03937 = in.) w, fin segment width, mm (x 0.03937 = in.) I1P static pressure drop, Pa (x 0.00402 = in. of water) /lb bulk or average absolute viscosity, Pa s (x 2419 == lbm/h· ft) Ph bulk or average density, kg/rn ' (x 0.06243 == Ibm/ ft 3)
Much of this article is taken from Chemical Engineering Progress, pp. 69-72, February 1977, with the permission of the editor.
