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Abstract

A compact apparatus for ultra high energy efficient heating, cooling and dehymidifying of air for use in heating, cooling and heat recovery ventilation of buildings comprises two matrix containers and a fuel combustor for generating useful heat, with the two matrix containers housing stationary matrices of solid materials providing alternately high energy efficient: (a) transfer of energy from combustion products and exhausted air to incoming make up air, (b) indirect evaporative cooling, (c) indirect-direct evaporative cooling (d) dehumidification-indirect evaporative cooling, (e) dehumidification-indirect-direct evaporative cooling. A continuous alternate and conuntercurrent flow of two air streams through the two matrix containers and a continuous flow of the air through the apparatus is maintained by alternately operating air fans controlled by solid state processor. The apparatus intended for use in buildings automatically maintains comfort and quality of the air in the occupied space of the building during the winter heating season, summer cooling season, and the rest of the year--ventilating season, and can be also effectively used in numerous industrial heating, dehumidifying and cooling operations.

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