A stable, solid, externally dry particulate system for controlling humidity to a selected range comprising a hydrophobic silica component and a hydrophilic silica component where the hydrophobic component comprises about 4 to 10 wt. % hydrophobic nano silica particles and from about 96 to 90 wt. % of a mixture of a saturated solution of at least one soluble solid and undissolved at least one soluble solid, and the hydrophilic micro silica component comprises from about 20 to 40 wt. % hydrophilic silica particles and about 80 to 60 wt.% of the mixture of the saturated solution of at least one soluble solid and the undissolved at least one soluble solid. The saturated solution is made of at least one soluble solid dissolved into a polar liquid and has an equilibrium relative humidity when a saturated solution in the polar liquid.

Systems and methods for operating a water recovery system and include activating a plurality of dampers, a fan, and a refrigeration system of the water recovery system. The method includes measuring an ambient air temperature of the water recovery system based on data obtained from an ambient air temperature sensor. The method includes measuring one or more evaporator temperatures associated with an evaporator of the water recovery system based on data obtained from one or more evaporator temperature sensors. The method includes determining an optimal evaporator air temperature of the water recovery system based on the one or more evaporator temperatures and the ambient air temperature. The method includes setting a speed of the fan of the water recovery system based on the optimal evaporator air temperature.

An electrodialysis apparatus comprises a first reservoir wherein salt dissolved in solvent is reduced below a threshold concentration and a second reservoir wherein the salt concentration increases. A first electrode contacts a first solution of a first redox-active electrolyte material, and a second electrode contacts a second solution of a second redox-active electrolyte material. A first type of membrane is disposed between the first and second reservoirs and a second type of membrane is disposed between the first electrode and the first reservoir and between the second electrode and the second reservoir. A color measuring device is coupled to at least one of the solutions, and a control system is configured to modify the value of a property of at least one of the first and second solutions in response to detecting a color value of one of the solutions exceeding a threshold color value.

A chiller system is provided. The chiller system includes a refrigeration fluid, an evaporative fluid, and an evaporator that contacts the refrigeration fluid and the evaporative fluid to cause a portion of the refrigeration fluid to evaporate. The chiller system also includes, an output heat exchanger that receives at least a portion of an adjacent refrigeration fluid and increase the temperature thereof by transferring the heat of an outside environment of the heat exchanger to the adjacent refrigeration fluid. The heat exchanger directs the portion of the adjacent refrigeration fluid back to the evaporator. The chiller system also includes, a separator that receives the evaporative fluid and the evaporated refrigeration fluid and separates the two by contacting them with a separator component resulting in a separated evaporative fluid and a processed refrigeration component allowing the separated evaporative fluid to return to the evaporator.

An air conditioning apparatus according to an aspect of the invention includes: an air conditioner that has a heat pump; a humidity controller of a wet desiccant type; an air transport flow path through which air discharged from the air conditioner is transported to the humidity controller; and a control unit that includes an air conditioner temperature control unit controlling a temperature of air discharged from the air conditioner and a humidity controller humidity control unit controlling a humidity of air discharged from the humidity controller. The air conditioner supplies the air, the temperature of which is controlled, to the humidity controller via the air transport flow path and the humidity controller discharges the air, the humidity of which is controlled, into a room.

A device to remove moisture from air. The device includes a container with an interior space that contains liquid saline solution. The interior space is configured to prevent the saline solution from escaping into the environment. A saline solution moving device moves the saline solution within the interior space. An air moving device moves air through the interior space. The movement of the air within the interior space exposes the air to the saline solution and enables moisture within the air to be absorbed into the saline solution.

A method and system for mass and heat exchange, where water is preferentially absorbed by a non-toxic, non-corrosive liquid desiccant after passing through a hydrophilic, non-porous membrane. Optionally, mixing stages are provided to reduce the surface concentration of water at the desiccant-membrane interface.

Disclosed is a humidity control apparatus which ensures a sufficient dehumidification amount without increasing an area of a gas-liquid contact portion in a dehumidification unit, regardless of the type of liquid absorbent used. The humidity control apparatus includes an absorbent circuit connecting a liquid-based dehumidification module, a recovery module, and a liquid-cooling heat exchanger which cools, with a refrigerant, a liquid absorbent before being used in the liquid-based dehumidification module. A refrigerant-cooling-based dehumidification module is positioned upstream of the liquid-based dehumidification module in a flow direction of target air, and cools and dehumidifies, with the refrigerant, the target air before being dehumidified in the module. The liquid-cooling heat exchanger and the refrigerant-cooling-based dehumidification module are connected to a single refrigerant circuit together with a liquid-heating heat exchanger.

An air delivery system may include a housing, a first liquid-to-air membrane energy exchanger (LAMEE), and a desiccant storage tank. The housing includes a supply air channel and an exhaust air channel. The first LAMEE may be an exhaust LAMEE disposed within an exhaust air channel of the housing. The exhaust LAMEE is configured to receive the outside air during a desiccant regeneration mode in order to regenerate desiccant within the exhaust LAMEE. The desiccant storage tank is in communication with the exhaust LAMEE. The exhaust LAMEE is configured to store regenerated desiccant within the desiccant storage tank. The regenerated desiccant within the desiccant storage tank is configured to be tapped during a normal operation mode.

The present disclosure relates to a dehumidifier for dehumidification of high-efficiency moisture for dehumidifying a low-temperature storage, which may dehumidify supplied humid air using a dehumidifying liquid, use a water seal vacuum pump to bring air into contact with the dehumidifying liquid, and control humidity of the discharged air by sequentially arranging a plurality of pumps and a plurality of chambers in pairs. In addition, there is provided a dehumidifier for dehumidification of moisture in which a dehumidifying liquid is regenerated by using heat generated from a pump inside a device and heat from external equipment.