A method for heat and humidity exchange between two air...

F - Mech Eng,Light,Heat,Weapons – 24 – F

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F24F 3/147 (2006.01) F24F 3/14 (2006.01)

Patent

CA 2370492

The invention relates to a method for heat and humidity exchange between two air streams, one of which being hot and humid, wherein a first of said air streams is fed from the interior of a building to the ambient air and a second of said air streams is fed from said ambient air to the interior of said building, whereby said first air stream is cooled and thereafter transferred through a heat exchanger (21), whereupon it is transferred to a heater (22) and thereafter transferred through a dehumidifier (23) before being exhausted to the ambient air, whereas said second air stream is transferred through said dehumidifier (23) and thereafter through said heat exchanger (21), whereupon it is cooled in a cooling device before being transferred into the interior of said building. According to the invention said second air stream, before being fed to said dehumidifier, is caused to exchange heat and humidity with said first air stream before the latter is fed into said heat exchanger (21). The invention relates also to an apparatus for carrying out the method.

L'invention concerne un procédé d'échange de chaleur et d'humidité entre deux flux d'air, l'un étant chaud et humide. Un premier flux d'air est cédé l'intérieur d'un bâtiment à l'air ambiant et le deuxième flux d'air est cédé de l'air ambiant à l'intérieur du bâtiment. Le premier flux d'air est refroidi puis cédé via un échangeur de chaleur (21) à un dispositif de chauffage (22) puis il traverse un déshumidificateur (23) avant d'être évacué dans l'air ambiant. Quant au deuxième flux d'air, il traverse le déshumidificateur (23) puis l'échangeur de chaleur (21), après quoi il est refroidi dans un dispositif de refroidissement avant d'être cédé à l'intérieur du bâtiment. Selon l'invention, avant d'être cédé au déshumidificateur, le deuxième flux d'air est soumis à un échange de chaleur et d'humidité avec le premier flux avant que ce premier flux ne soit cédé à l'échangeur de chaleur (21). L'invention concerne également un appareil permettant de mettre en oeuvre ce procédé.

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