The Loss of Heat by Natural Convection from Parallel Vertical Plates in Air

Abstract

The variation with height, spacing, and temperature excess above ambient air, of convective loss per unit area, averaged over the whole surface of a plate, has been determined experimentally for both tall (4-foot) and short (1 ft. 4 in.) plates.

In the case of tall plates, the heat losses from the upper, middle, and bottom portions have been determined separately, so the effect of spacing and temperature excess on the relative efficiency of the various parts of a plate is known.

Some observations have been made on the effect of prolonging the plates upwards by means of a chimney of wood.