Active moisture control barrier and active humidity...

Details Active moisture control barrier and active humidity... Active moisture control barrier and active humidity...

2005-11-23

2010-12-07

Jiang, Chen-Wen (Department: 3744)

Refrigeration

Automatic control

Humidity sensor

C062S441000, C062S417000

Reexamination Certificate

active

07845181

ABSTRACT:
An active moisture control barrier is provided which comprises a layer of shape memory polymer and a heating arrangement associated with the layer of shape memory polymer. The barrier may be used to provide an active humidity controlled space having an enclosure with walls to separate an interior of the enclosure from an environment surrounding the enclosure. An opening in one of the walls allows communication between the interior of the enclosure with the environment. A layer of shape memory polymer is provided at the opening to isolate the interior of the enclosure from the environment. A control may be provided for the heating arrangement to allow for a heating of the layer to a level as controlled or set by a user. An air passage conduit may extend from the interior of the enclosure through a zone of relatively higher water vapor pressure. The air passage conduit may be formed, at least in part, of shape memory polymer to allow water vapor to migrate from the zone of relatively higher water vapor pressure into the interior of the enclosure thereby adding moisture into the enclosure.

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