A dehumidifier includes a desiccant, a first fan, a second fan, and a circuit. The first fan generates a process airflow through a first portion of the desiccant as it rotates to provide dehumidification. The process airflow enters the dehumidifier through a process airflow inlet and exits through a process airflow outlet. The second fan generates a reactivation airflow through a second portion of the desiccant to dry the desiccant. The reactivation airflow enters the dehumidifier through a reactivation airflow inlet and exits through a reactivation airflow outlet. The circuit includes a power setting switch that controls whether the dehumidifier operates in a low or high power setting. In the low power setting, the dehumidifier operates on power from a first electrical outlet type. In the high power setting, the dehumidifier operates on power from a second electrical outlet type that is different from the first electrical outlet type.

A dehumidifier includes a desiccant, a first fan, a second fan, and a circuit. The first fan generates a process airflow through a first portion of the desiccant as it rotates to provide dehumidification. The process airflow enters the dehumidifier through a process airflow inlet and exits through a process airflow outlet. The second fan generates a reactivation airflow through a second portion of the desiccant to dry the desiccant. The reactivation airflow enters the dehumidifier through a reactivation airflow inlet and exits through a reactivation airflow outlet. The circuit includes a power setting switch that controls whether the dehumidifier operates in a low or high power setting. In the low power setting, the dehumidifier operates on power from a first electrical outlet type. In the high power setting, the dehumidifier operates on power from a second electrical outlet type that is different from the first electrical outlet type.

A moisture separating system includes a first heat pump, a liquid source in thermal communication with a heat absorption section of the heat pump, and a source of a gas to be treated. The system also includes a hydrophilic nanoporous membrane comprising a first side that receives a flow of gas from the gas source and a second side that receives a flow of liquid from the liquid source.

A dehumidifying air handling unit for an HVACR system includes a housing, a desiccant wheel, and a cooling heat exchanger. A main airflow path extending through the housing from an air inlet to and air discharged outlet of the housing. The desiccant wheel includes a first end and a second end that are each disposed in the main airflow path and a metal organic framework desiccant that is moved between the first end and the second end. A desiccant wheel includes a metal organic framework desiccant disposed on a surface of the desiccant wheel. Rotation of the desiccant wheel moves a position of the surface between a first end and a second end of the desiccant wheel. The metal organic framework desiccant has an majority absorption-desorption operating band of 25% relative humidity or less.

A desiccant dehumidifier includes a desiccant rotor, which is rotatably arranged about a center axis; a process air circuit arranged to conduct a process airflow through a process sector of the desiccant rotor; a regeneration air circuit arranged to conduct a regeneration airflow through a regeneration sector of the desiccant rotor; a purge air circuit arranged to conduct a purge airflow through a first purge sector and a second purge sector of the desiccant rotor; and an air fan arranged downstream of the desiccant rotor, which air fan is configured to generate the regeneration airflow in the regeneration air circuit and the purge airflow in the purge air circuit. The purge air circuit is arranged to conduct the purge airflow through the first purge sector in a first direction through the desiccant rotor, and through the second purge sector in a second direction through the desiccant rotor, wherein the first direction is opposite to the second direction.

The object of the present invention is to provide an excellent total heat exchanging element paper and a total heat exchanging element which are excellent in heat transferability, water vapor permeability and gas barrier properties and cause no mixing of supplied air and discharged air. The present invention provides a total heat exchanging element paper using a paper made using mainly a natural pulp beaten to a Canadian modification freeness of not more than 150 ml, a substantially non-porous total heat exchanging element paper comprising a substantially non-porous cellulosic base which contains a moisture absorbing agent, a non-porous total heat exchanging element paper having a high gas barrier property which has a thickness of not more than 100 m and a carbon dioxide permeation constant specified in JIS K7126 of not more than 5.010.sup.13 mol.Math.m/m.sup.2.Math.s.Math.Pa, and a non-porous total heat exchanging element paper having a high enthalpy exchangeability which has a water vapor permeability specified in JIS Z0208 of not less than 1000 g/m.sup.2.Math.24 Hr at 20 C. and 65% RH.

An object is to provide a dehumidifying member having a high tensile strength. The object can be achieved by a dehumidifying member including a honeycomb structure. The honeycomb structure includes a planar base material and a corrugated base material, a contact part where a wave top portion of the corrugated base material and the planar base material are in contact with each other, and an air hole. The contact part includes an adhesion part adhered by an adhesive agent and silica gel formed on the air hole side from the contact part. The component forming the adhesive agent differs from the component of the silica gel formed on the air hole side from the adhesion part.

A one-use air-reduction is herein detailed which is suitable for mounting in window slits or door gabs for use in discharging wet air from room dehumidification, without the one-use air-reduction preventing safety devices built into the window or door the one-use air-reduction is installed.