The results of this research show that as the horizontal spacing between the cylinders in a single horizontal row is reduced; the natural convection heat transfer coefficient and thus the rate of heat transfer from each cylinder could increase substantially beyond those for natural convection from a single cylinder before rapidly decreasing. The rate of heat transfer from the array can therefore be significantly increased because of two factors; the enhanced heat transfer coefficient and the ability to add more cylinders in a given volume. The rapid reduction in heat transfer at very small spacing also points to the existence of an optimum tube spacing. This phenomenon does not appear to have been reported before and may lead to significant reductions in the size of many heat exchangers and may prove useful in cooling of electronic components.

This content is only available via PDF.
You do not currently have access to this content.