Abstract: A dehumidification system for a dry clean room includes: a dry chamber supplied with air having a lower humidity than air in the dry clean room; a main dehumidification unit which supplies air to the dry clean room; and a terminal dehumidification unit which processes the air to be supplied from the dry clean room to the dry chamber, thus achieving energy saving and cost reduction for the dehumidification system for the dry clean room.

Abstract: A dehumidification system for a dry clean room includes: a dry chamber supplied with air having a lower humidity than air in the dry clean room; a main dehumidification unit which supplies air to the dry clean room; and a terminal dehumidification unit which processes the air to be supplied from the dry clean room to the dry chamber, thus achieving energy saving and cost reduction for the dehumidification system for the dry clean room.

Abstract: In the present invention, liquid absorbent is cooled or heated during off-peak hours of electricity demand to prevent the margin between electricity supply and demand from being tightened. A humidity control apparatus switches an absorbent circuit between a regenerated position in which a regeneration circuit is formed, and a humidity-controlled position in which a humidity control circuit is formed. In the regeneration circuit, during a period during which humidity control operation is stopped, outlet and inlet ends of a regeneration passage communicate with each other, and liquid absorbent circulates within the regeneration passage. In the humidity control circuit, during the humidity control operation, a humidity control passage and the regeneration passage communicate with each other, and liquid absorbent circulates between the humidity control passage and the regeneration passage.

Abstract: A humidity control module, in which liquid absorbent exchanges air and moisture, reduces a temperature change in the liquid absorbent. A humidity control module includes a partition member and a heat transfer member. The partition member separates an air passage from an absorbent passage. The partition member is wholly or partially formed by a moisture permeable membrane. The liquid absorbent flowing through the absorbent passage exchanges the moisture with the air flowing through the air passage via the moisture permeable membrane. The heat transfer member is provided in the absorbent passage and surrounded by the liquid absorbent. A heat medium flowing through the heat transfer member exchanges heat with the liquid absorbent flowing through the absorbent passage.

Abstract: A refrigerant circuit of a humidity control apparatus is provided with two adsorption heat exchangers. In the refrigerant circuit, refrigerant can circulate in reverse directions. A switching mechanism of the humidity control apparatus switches between a transfer path of the outdoor air to be supplied into a room and a transfer path of the indoor air to be exhausted to the outside the room. In a first operation of the humidity control apparatus, a direction of refrigerant circulation and a flow path of the air are changed every predetermined period. In a second operation of the humidity control apparatus, the refrigerant circuit is stopped, and the flow path of the air is changed every predetermined period.