Vacuum-enhanced membrane dehumidification and humidification
AssigneeDais Corporation
InventorsBRIAN JOHNSON, RASOOL NASR ISFAHANI
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Abstract
Systems and methods for vacuum-enhanced membrane dehumidification and humidification are provided. An evacuated region can be established between a first surface of a nonpermeable material and a first surface of a permeable membrane that provides for efficient movement of vapor between the surfaces while limiting the sensible transfer of heat between those surfaces. Decoupling these surfaces makes it possible to maintain a selected temperature at the first surface of the nonpermeable material without substantially altering the sensible temperature of the fluid in contact with the second surface of the permeable membrane.
Claims26
A system for changing a humidity level of a process air, the system comprising:
- a permeable membrane having a first surface and a second surface opposite from the first surface, wherein the second surface is configured to be in direct physical contact with the process air as the process air travels through the system;
- a condenser comprising a nonpermeable material and having a first surface facing the permeable membrane;
- and
- an evacuated volume between the first surface of the condenser and the first surface of the permeable membrane.
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Dependencies are inferred from the claim text.