LEGEME TIL REGENERATIV FUGT- OG VARMEOVERFOERELSE SAMT FREMGANGSMAADE TIL FREMSTILLING AF SAMME

摘要

1478605 Thermal regenerators; air conditioning SVENSKA FLAKTFABRIKEN AB 29 Jan 1976 [30 Jan 1975 24 Nov 1975] 03607/76 Headings F4K and F4V A transfer element for use in humidity and heat exchange apparatus is made by forming the element from a non-hygroscopic material and thereafter treating the element to provide thereon a hygroscopic surface layer. The element is preferably made of metal such as aluminium or aluminium alloy on which is formed a hygroscopic surface layer of the oxide of the metal. This layer can be formed by a heat treatment of the body portion in water or moist air after rendering the surface layer porous in a pickling bath, and may be supplemented by an impregnation with a hygroscopic salt such as lithium chloride. In the use of the transfer elements in a regenerative humidity heat transfer apparatus, treatment to provide the hygroscopic layer is effected after the gluing together into an assembly of a plurality of the heat transfer elements comprising corrugated sheets 2 alternating with noncorrugated sheets 1.