Dehumidification system

A dehumidification system for maintaining low dew point environment in a dry room, comprising:

• a dehumidification rotor having at least an absorption zone, a regeneration zone and a purge zone in order along a rotation direction of the dehumidification rotor;
• an indoor air intake pipeline connected to the dry room at one end thereof and connected to an input side of the absorption zone of the dehumidification rotor at the other end thereof;
• a first dry air supply pipeline connected to an output side of the absorption zone of the dehumidification rotor at one end thereof and connected to the dry room at the other end thereof;
• a fan provided in the indoor air intake pipeline;
• a cooler provided downstream of the fan in the indoor air intake pipeline;
• a desiccant air conditioner;
• a first post-regeneration exhaust pipeline supplying post-regeneration exhaust from the regeneration zone of the dehumidification rotor to the desiccant air conditioner;
• a purge air supply pipeline supplying purge air from the desiccant air conditioner to the purge zone of the dehumidification rotor,
• the desiccant air conditioner including a second post-regeneration exhaust pipeline discharging post-regeneration exhaust, and an outdoor air intake pipeline;
• a regeneration air supply pipeline supplying regeneration air discharged from the purge zone of the dehumidification rotor to the regeneration zone of the dehumidification rotor;
• a heater provided in the regeneration air supply pipeline;
• and
• a second dry air supply pipeline supplying dry air from the desiccant air conditioner to an upstream side of the fan in the indoor air intake pipeline,
• wherein the desiccant air conditioner comprises
• an additional dehumidification rotor having an absorption zone, a regeneration zone and a purge zone in order along a rotation direction of the additional dehumidification rotor,
• wherein an output end of the first post-regeneration exhaust pipeline is connected to an input side of the absorption zone of the additional dehumidification rotor, and an input end of the purge air supply pipeline is connected to an output side of the absorption zone of the additional dehumidification rotor, the second dry air supply pipeline branches off from the purge air supply pipeline and an input end of the second post-regeneration exhaust pipeline is connected to an output side of the regeneration zone of the additional dehumidification rotor.