The dehumidifier has a rotary bed 6 containing a thermally regenerable desiccant material, including a process segment 7 and a regeneration segment 8, and an air-to-air heat exchanger A having first and second heat-exchange channels A1 and A2. A process air channel 20 conducts process air through the process segment 7 of the rotary bed, through heat-exchange channel A1 of heat exchanger, to outlet 3. A cooling air channel 22 conducts cooling air from an external cooling air inlet 4a, through heat-exchange channel A2 of heat exchanger A to an exhaust air outlet 5a without passing through the rotary bed. The temperature of the return process air is controllable by a variable speed fan 12. A regeneration air channel 26 conducts air via heater box 9 through the regeneration segment 8 of the rotary bed, to exhaust air outlet 5b.

A low-humidity air supply device which supplies low-humidity air into a dry room includes an intake portion that is connected to an inside of the dry room and through which air in the dry room is taken in, a cooling unit that cools the air taken in through the intake portion, a dehumidification unit that dehumidifies the air cooled by the cooling unit, and a supply unit that is connected to the inside of the dry room and through which the air dehumidified by the dehumidification unit is supplied into the dry room, in which at least one of the intake portion, the cooling unit, the dehumidification unit, and the supply unit is composed of a duct having a box shape through which the air is able to pass, and the duct is a portion of a casing that constitutes an outermost layer of the low-humidity air supply device.

There is provided a dehumidifying device for dew point temperature adjustment that adjusts a dew point temperature of air to a temperature of about −20° C. or lower, the device including an adjusting unit that adjusts a dew point temperature by adjusting at least one driving operation that is selected from a rotational frequency of a supply fan for supplying air into the dehumidifying device for dew point temperature adjustment, a rotating speed of a dehumidifying rotor, an opening degree of a blow-out air volume adjustment damper, a rotational frequency of an exhaust fan for exhausting air, and an opening degree of an exhaust air volume adjustment damper.

Disclosed are an Internet of Things (IoT)-based smart hybrid dehumidification system capable of reducing energy consumption, that is, the usage of a heater by using the condensation heat of a pre-cooler as a heat source for heating a rotor for releasing moisture in a dehumidification device to the outside, and a control method therefor. The IoT-based smart hybrid dehumidification system includes a sensing unit provided in a dehumidification space, a direct heating unit configured to suction humid air and supply dehumidified dry air to the dehumidification space, a direct digital controller (DDC) configured to control the direct heating unit, and a user terminal configured to remotely control the DDC in real time according to a sensing signal sensed by the sensing unit, and thus it is possible to maximize user convenience.

The invention relates to a particle protection device (32) for a dehumidifier (1), the dehumidifier (1) comprising: a dehumidifying element (2), configured to separate moisture from air; a filter element (22) for separating particles from a process airflow (8); and a process air fan (20) for generating the process airflow (8) through the dehumidifying element (2) and through the filter element (22). Wherein the particle protection device (32) comprises: a control device (100); and a particle detector (30) arranged in communication with the control device (100) and configured to be arranged at the dehumidifier (1) to determine the particle concentration in the air that surrounds the dehumidifier (1) and that should be processed by the dehumidifier (1). The invention also relates to a method, performed by a control device (100) of a particle protection device (32), for protecting a dehumidifier (1) from particles. The invention also relates to a dehumidifier (1). The invention also relates to a computer program (P) computer-readable medium.

A system for ventilation, dehumidification, and cooling according to an exemplary embodiment in the present disclosure may include an outdoor unit dehumidifying and cooling introduced outside air; and an indoor unit connected to the outdoor unit to perform ventilation, in which the outdoor unit includes a dehumidification rotor, an evaporative cooler, an evaporative condenser, a ventilation damper, a heating unit, and a control module operating and stopping at least one of the dehumidification rotor, the evaporative cooler, the evaporative condenser, the ventilation damper, or the heating unit.

Disclosed herein is an air-water extraction system that includes a water selective membrane configured to transport water from humid air via selective diffusion through the water selective membrane; a low pressure chamber in fluid communication with the water selective membrane and a hydrogen gas inlet configured to deliver a dry hydrogen to the low pressure gas chamber, a membrane and electrode assembly comprising an anode, a proton exchange membrane, a cathode, and a power supply; wherein the anode is in fluid communication with the low pressure chamber, a high pressure chamber in fluid communication with the cathode for receiving a saturated hydrogen and a liquid water from the cathode; a water conduit in fluid communication with the high pressure chamber configured to remove the liquid water from the high pressure chamber, and a hydrogen conduit for removing the saturated hydrogen from the high pressure chamber.

Herein is detailed a 3-rotor drying system (30,40,50) for producing technical air having a very low dew point comprising three rotary desiccant dryers (2,21,22), each rotary desiccant dryer (2,21,22) comprising a drying sector (2a,21a,22a) and a regeneration sector (2b,21b,22b), the rotary desiccant dryers (2a,21a) arranged in sequence and sharing a common regeneration-air flow path (9) for passing regeneration-air through the respective regeneration sectors (2a,21b,22b) of the rotary desiccant dryers (2,21,22) and a common intake-air flow path (6,7) for passing intake-air through the respective drying sectors (2a,21a,22a) of the rotary desiccant dryers (2,21,22) for dehumidifying the intake-air to product-air having a very low dew point.

Methods and systems for controlling temperature and humidity within a space in a building. Outdoor air and return air from the space are passed through particular equipment in a particular order. Equipment includes a secondary direct-expansion refrigeration circuit, a recovery wheel, a primary cooling coil or direct-expansion refrigeration circuit, secondary circuit coils, and a dehumidification wheel. Various embodiments include modulating the secondary circuit compressor to adjust reheat capacity at the secondary circuit condenser coil, a geothermal direct-expansion refrigeration circuit, a variable refrigerant flow subsystem, fan coil units, multiple zones, a dedicated outdoor air supply subsystem, an evaporative cooler, supplemental outdoor air, or a combination thereof. In some embodiments, supply air passes first through the recovery wheel, then through the primary cooling coil, then through the dehumidification wheel, and then to the space. Further, in some embodiments, exhaust air passes through the dehumidification wheel, and then through the recovery wheel.

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.