UNITARY HEAT EXCHANGER FOR THE AIR-TO-AIR TRANSFER OF WATER VAPOR AND SENSIBLE HEAT

摘要

A unitary heat exchanger device, for the transfer of total heat, comprising airto-air heat transfer means and configurated such that air may pass there through. The heat t ransfer means comprises an air-to-air water vapor transfer element and an air-to-air sensible heat transfer element, the exchanger elements being in air communication with each other. The device ma y be used in ventilation systems which replace air exhausted from the interior of a buildi ng with fresh outside air, the use of the device under cold weather conditions may avoid or at tenuate the need for using a defrost mechanism to defrost the device.