Abstract:
A dehumidifier unit for pre-conditioning air delivered to a multiplicity of separate refrigeration air conditioner units and especially ductless systems where the compressor-condenser unit is separate from the fan-coil unit, and assisted by heat pipe transfer of heat from air dehumidified through a desiccant wheel and by heat of compression from the condenser of one compressor-condenser unit, and with a heater to maintain the temperature of regeneration air through the wheel, one dehumidifier unit pre-conditioning air for a multiplicity of refrigeration air conditioners or fan-coil units.
Abstract:
The invention relates to a composite enthalpy exchanger useful for transferring or removing latent and sensible heat from a gaseous stream. This enthalpy exchanger consists of a cellulose-based substrate impregnated with a polymeric desiccant. Also provided is a method of manufacture of the enthalpy exchanger wherein the process for synthesizing the polymer on the substrate is disclosed.
Abstract:
A gas concentration device has a gas adsorbing element and a heat exchanger. The gas adsorbing element is divided into an adsorbing zone, and a desorbing zone. The heat exchanger has first and second flow channels. The first flow channels are separated from the second flow channels. The first flow channels receive foggy air having minute particles of water floating therein to cool process air flowing through the second flow channels via heat of vaporization consumed to evaporate the minute particles of water floating in the foggy air of the first flow channels. The second flow channels may be connected to the adsorbing zone of the gas adsorbing element such that process air cooled in the second flow channels is directed to the absorbing zone of the adsorbing element. The gas adsorbing element may further be divided into a cooling zone, such that the gas adsorbing element has absorbing, desorbing and cooling zones. In this case, the cooling and adsorbing zones of the gas adsorbing element may be connected, such that after process air passes through the adsorbing zone, a portion of the process air is directed through the cooling zone. The gas adsorbing element may be formed of a rotor rotatably fitted in a casing, such that as the gas adsorbing element rotates, the adsorbing, desorbing and cooling zones of the gas adsorbing element dynamically change and the rotor repeatedly rotates through the adsorbing section, followed by the desorbing section followed by the cooling section.
Abstract:
A heat recovery and dehumidifier system for ventilating fresh air to a conditioned space. The system is comprised of an enthalpy wheel or body for treating incoming fresh air to remove heat and moisture therefrom and a duct for introducing fresh air to a first segment of the enthalpy wheel or body. An evaporator coil is in communication with the enthalpy wheel or body to receive fresh air having heat and moisture removed therefrom, the evaporator coil further lowering the temperature of said fresh air and a subcooling coil is provided in communication with the evaporator coil to receive fresh air from said evaporator coil, said subcooling coil treating the fresh air to provide conditioned fresh air having the temperature thereof raised after leaving the evaporator coil, the subcooling coil in communication with said space to be conditioned to supply the conditioned fresh air thereto. Means is provided for returning air from said conditioned space to the enthalpy wheel or body thereby providing a return air and means is provided for passing the return air through a segment of said enthalpy wheel or body to exchange sensible and latent heat from the return air to the enthalpy wheel or body thereby cooling the enthalpy wheel or body. The return air is exhausted to the atmosphere after passing through the enthalpy wheel or body.
Abstract:
A core for interacting with a fluid media flowing therethrough which includes a plurality of adjoining channels. Each of the channels is generally in the form of a hexagon in cross section and includes an internal surface area. The internal surface area is coated with an interactive material which interacts with the fluid media flowing through the channels to achieve one of heat transfer, mass transfer, catalysis, ion exchange, separation of the fluid media, removal of organic compounds from the fluid media, dilution or concentration of fluid components, treatment of fluid-carried organisms, and the capture and retention of hazardous materials. Examples of the use of the core include positioning the core within a rotary heat exchanger wheel or a rotary mass-transfer wheel, often used in desiccant air-conditioning systems.
Abstract:
A moisture removing device comprising a ceramic shell. The ceramic shell has a plurality of parallel openings. The openings extend along the length of the shell. The openings form elongated surfaces adapted to be contacted by moisture ladened air moving through the openings along a path of travel. Such surfaces have desiccant capabilities for the extraction of moisture from air passed therethrough.
Abstract:
A method and apparatus for preparing and regenerating an adsorbent material which material contains a medium (particularly moisture). The medium is removed from the adsorbent material by a hot regeneration gas, following which the adsorbent material is cooled. In order to improve the energy efficiency ("energy balance") in a process for drying a humid gas, particularly humid air, it is proposed that regeneration offgas be passed through the adsorbent material immediately before the adsorbent material is subjected to (final) regeneration, the regeneration offgas having a lower temperature than the hot regeneration gas.
Abstract:
A sensible and latent heat exchange or adsorbent media formed from an improved desiccant or adsorbent paper having higher strength and thinner gauge to provide increased area of media, the media having a multiplicity of passageways therethrough through which an air stream can flow. The improved desiccant or adsorbent paper is comprised of fibrillated organic fibers formed to provide an improved support material having improved levels of strength and higher levels of desiccant or adsorbent material contained in the improved fibrous support material to provide the improved paper. The improved desiccant paper is capable of adsorbing or transferring sensible heat from a warm air stream and releasing or transferring the absorbed sensible heat into a cool air stream as the air stream flows though the sensible and latent heat exchange media. Further, the desiccant or adsorbent material is capable of adsorbing moisture from a humid air stream flowing through the sensible and latent heat exchange media and capable of releasing the adsorbed moisture into a dry air stream flowing through the passageways of the sensible and latent heat exchange media.
Abstract:
The concentration of airborne microorganisms can be substantially reduced by passing air containing a concentration of microorganisms through a core of desiccant. Preferably, the core of desiccant is present in a moisture transfer wheel, which forms part of an open-cycle air conditioning system. The preferred desiccant is a large-pored crystalline titaniumsilicate molecular sieve, which can be regenerated into an essentially anhydrous state at a regeneration temperature of less than about 200.degree. F., and thereafter can absorb moisture from air to provide air having a vapor pressure of less than about 3 torr.
Abstract:
Adsorbents are used whose equilibrium isotherms for adsorption show no rapid rise in relative humidity more than 40% and whose equilibrium isotherms for adsorption and desorption show no hysteresis phenomenon and in which adsorbed humidity does not cause capillary condensation, for example, A-type or RD-type silica gel or hydrophilic zeolite. Adhesive or binder is applied on the surface of a metallic sheet, a plastic sheet or a ceramic fiber paper, and particulates of the above-mentioned adsorbents are fixed on or in it to get a total heat energy exchanger material. The total heat energy exchanger material is corrugated and laminated to obtain a total heat energy exchanger element. When outer air or return air contains various odorous gases, these odorous gases can be mostly prevented from transferring into supply air through the total heat energy exchanger. When particulates of the above-mentioned adsorbents and chemical blowing agents are mixed in adhesive and said chemical blowing agents are made to blow by heating, the part of adsorbent particulates buried in the adhesive layer can also function as adsorbent through communicating pores and thus total heat energy exchange efficiency can be increased.