Patent ID: 8191872

Claim:
A dew-point cooler comprising a heat exchange element, the dew-point cooler being adapted to be operable in counter flow so that when in use a product air stream flows over a first side of the heat exchange element and is cooled by heat transfer to the element and a portion of the product air stream is diverted back over a second side of the heat exchange element, in use the second side of the heat exchange element being provided with a supply of water whereby heat transfer from the heat exchange element to the water causes it to evaporate into the air stream; wherein the heat exchange element comprises a heat conducting wall and a formed heat exchange laminate attached to the heat conducting wall, the formed heat exchange laminate comprising a formable carrier layer at least partially covered with a flexible liquid retaining layer having an open structure such that in use, a heat exchange medium can directly contact the carrier layer through the open structure of the liquid retaining layer.