Abstract: A dehumidification air conditioner reduces carbon dioxide levels in a low humidity workroom. Cooling dehumidification is performed on outdoor air in a pre-air-cooler to produce pre-cooled air, which is branched such that a first part passes through a processing zone of an adsorption rotor which can remove carbon dioxide and humidity simultaneously, and a second part passes through a purge zone of the adsorption rotor. Air which passed through the processing zone is supplied to a low humidity workroom. Air which passed though the purge zone of the adsorption rotor is mixed with outdoor air and then heated with a reproduction heater to produce heated air. The heated air is sent to a reproduction zone of the adsorption rotor, to simultaneously remove carbon dioxide and humidity from the adsorption rotor and produce an exhaust stream which exhausted out of the device.

Abstract: A dehumidification air conditioner reduces carbon dioxide levels in a low humidity workroom. Cooling dehumidification is performed on outdoor air in a pre-air-cooler to produce pre-cooled air, which is branched such that a first part passes through a processing zone of an adsorption rotor which can remove carbon dioxide and humidity simultaneously, and a second part passes through a purge zone of the adsorption rotor. Air which passed through the processing zone is supplied to a low humidity workroom. Air which passed though the purge zone of the adsorption rotor is mixed with outdoor air and then heated with a reproduction heater to produce heated air. The heated air is sent to a reproduction zone of the adsorption rotor, to simultaneously remove carbon dioxide and humidity from the adsorption rotor and produce an exhaust stream which exhausted out of the device.

Abstract: Exhaust air from a coater drier is sent to a desorption zone of a VOC concentration rotor. Air which comes out of the desorption zone is sent to a heat exchanger and cooled, the cooled air which comes out of the heat exchanger is sent to a cooling coil which carries out VOC concentration recovery. Air which comes out of the cooling coil is sent to an absorption zone of the VOC concentration rotor. Air which comes out of the absorption zone is sent to the heat exchanger and heated. The heated air which comes out of the heat exchanger is sent to a heating coil to be used as supply air for a coater drier. A heat pump can be used for the cooling coil which carries out cooling condensation of the organic solvent and the heating coil which heats purified air as air supply for the coater drier.

Abstract: Exhaust air from a coater drier is sent to a desorption zone of a VOC concentration rotor. Air which comes out of the desorption zone is sent to a heat exchanger and cooled, the cooled air which comes out of the heat exchanger is sent to a cooling coil which carries out VOC concentration recovery. Air which comes out of the cooling coil is sent to an absorption zone of the VOC concentration rotor. Air which comes out of the absorption zone is sent to the heat exchanger and heated. The heated air which comes out of the heat exchanger is sent to a heating coil to be used as supply air for a coater drier. A heat pump can be used for the cooling coil which carries out cooling condensation of the organic solvent and the heating coil which heats purified air as air supply for the coater drier.