Patent ID: 7604689

Claim:
Device for exchange of moisture, between at least two counter-current gas flows (A, B), comprising a chamber ( 1 , 101 ) having an inlet ( 7 , 107 ) and an outlet ( 8 , 108 ) for a first gas flow (B), such that the first gas flow flows in a first direction from the inlet to the outlet inside the chamber; and at least one duct ( 2 , 102 ), which extends inside the chamber, at least in a direction substantially parallel with the first direction, which duct ( 2 , 102 ) is arranged to conduct a second fluid flow (A) in an opposite direction to the first direction and which duct ( 2 , 102 ) comprises a duct wall material with high permeability to water, characterized by an inlet space for the gas flow B, which inlet space is arranged in the chamber ( 1 , 101 ), between the inlet ( 7 , 107 ) and a first support and flow distributing member ( 9 a , 109 a ) arranged inside the chamber ( 1 , 101 ) between the inlet opening ( 7 , 107 ) and the outlet opening ( 8 , 108 ), and having an extension in a plane which is non-parallel to the first direction, such that it extends essentially over the entire area of said plane inside the chamber, which support and flow distributing member comprises at least one duct opening ( 10 , 110 ) through which the at least one duct ( 2 , 102 ) extends and a set ( 11 a , 11 c , 111 ) of flow distributing openings, and by means for uniform distribution of the gas inside the inlet space for providing a substantially parallel and uniform first fluid flow (B) inside the chamber.