Heated moisture pump having a differential valve area

An apparatus comprising:

• a) a housing comprising:
• i. a first chamber having a heater,
• ii. at least one adsorption port into the first chamber, and
• iii. a desiccant disposed proximate to the at least one adsorption port;
• and
• b) a valve assembly located within the housing and being transitionable between an adsorption position and a desorption position, where in the adsorption position the at least one adsorption port is open and when in the desorption position a desorption port is formed between the valve assembly and housing, wherein:
• the at least one adsorption port comprises at least one opening in a wall of the housing, the wall being proximate to and substantially parallel to the desiccant;
• and
• c) a heat spreader disposed in the first chamber and in contact with the heater and the desiccant.

An apparatus comprising:

• a) a housing comprising:
• i. a first chamber having a heater,
• ii. at least one adsorption port into the first chamber, and
• iii. a desiccant disposed proximate to the at least one adsorption port;
• b) a valve assembly located within the housing and being transitionable between an adsorption position and a desorption position, where in the adsorption position the at least one adsorption port is open and when in the desorption position a desorption port is formed between the valve assembly and housing, wherein:
• a wall of the housing at least partially surrounds the desiccant and is removed from the desiccant, and
• the at least one adsorption port comprises a plurality of openings in the wall of the housing facing the desiccant and
• c) a heat spreader disposed in the first chamber and in contact with the heater and the desiccant.