Storage heaters.

摘要

A storage heater brick of an interlocking form, having projections and recesses on opposite faces. The projections are deeper than the recesses so that a stack of such bricks has air gaps between adjacent bricks. The projections are an easy fit in the recesses so that each brick beds down completely into its neighbour but the fit is sufficient to limit lateral movement. A free standing secure stack is thus provided with provision for efficient circulation of air and heat transference. Such a storage heater may then serve to heat water by way of a heat exchanger in the air flow path.