Coated membranes for enthalpy exchange and other application
AssigneeDpojnt Technologies Inc.
InventorRyan Nicholas HUIZING
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Abstract
Coated membranes comprise a porous desiccant-loaded polymer substrate that is coated on one surface with a thin layer of water permeable polymer. Such membranes are particularly suitable for use in enthalpy exchangers and other applications involving exchange of moisture and optionally heat between gas streams with little or no mixing of the gas streams through the membrane. Such membranes have favorable heat and humidity transfer properties, have suitable mechanical properties, are resistant to the crossover of gases when the membranes are either wet or dry, and are generally low cost.
Claims19
1-26. (canceled)
A heat and humidity exchanger comprising a membrane cartridge, said membrane cartridge comprising a membrane, wherein said membrane is a water transport membrane comprising a porous substrate with a water permeable coating formed on one surface thereof, and wherein said substrate comprises a desiccant-loaded porous polymer film and said coating comprises a water permeable polymer.
A method for transferring heat and humidity between a first gas stream and a second gas stream, said method comprising directing said first and second gas streams on opposite sides of a water transport membrane, said water transport membrane comprising a porous substrate with a water permeable coating formed on one surface thereof, wherein said porous substrate comprises a desiccant-loaded polymer film and said coating comprises a water permeable polymer.
Dependencies are inferred from the claim text.