Static heat-and-moisture exchanger

A static heat-and-moisture exchanger core for transferring both heat and moisture between two fluid streams comprising:

• an enclosed shell structure having means therein defining a plurality of openings;
• and heat-and-moisture transfer means statically disposed within said shell structure dividing the interior thereof into a series of superposed static flow paths each communicating at opposite ends with one of said openings for effecting continuous and simultaneous transfer of both heat and moisture between two fluid streams having different temperatures and humidities respectively flowing through alternate ones of said static flow paths during use of the static heat-and-moisture exchanger while the same is in a static state, said heat-and-moisture transfer means comprising a plurality of members disposed with and dividing the interior of said shell structure into said series of superposed static flow paths, said members being composed of a lamination consisting of an aggregate of fibrous material having a thickness of from 0.05 to 1 mm and which is sufficiently thermally conductive and sufficiently permeable to moisture to permit both temperature and humidity exchanges between the two fluid streams to be simultaneously and continuously effected through said members without intermixing of the fluid streams in adjacent flow paths while maintaining the difference in efficiencies between the temperature and humidity exchanges at a value no greater that 40%.