=+14-43.

is, the vertical tube spacing is 1.5 in. and the horizontal tube spacing is 1.299 in. The tubes have circular fins, s in. tubes, 0.014 in. fin thickness, fin pitch of 12 fins per in ., and four rows of tubes. An aspect ratio of 2.5 is desired for the face dimensions with a width of 60 in. Air enters the coil at 82 F dry bulb and 67 F wet bulb with an assumed face velocity of 500 ft/min. The