Abstract: In a method of operating an air conditioning unit to reduce moisture varying operations, psychrometric chart data is accessed. In addition, a constraint is set on the relationship between the temperature of air supplied by the air conditioning unit and the relative humidity of the air supplied based upon information contained in the psychrometric chart data. The air conditioning unit is controlled based upon the constraint to thereby reduce moisture varying operations of the air conditioning unit.

Abstract: A housing assembly includes first and second sides and first and second panels spaced apart from each other by an interior of the housing and traversing the first and second sides. A first porous desiccant retention plate and a second porous desiccant retention plate are spaced from each other are secured within the housing so as to define a desiccant chamber therebetween for maintaining the desiccant medium. An opening is formed within one of said panels in a location corresponding to the location of the desiccant chamber, facilitating replacement of the desiccant medium within the desiccant chamber.

Abstract: A heat exchanger that uses water liquid and vapor phases transformation to enhance heat exchange performance mainly includes a primary heat exchanger, a water vaporization device and an auxiliary heat exchanger. The auxiliary heat exchanger has an upper heat exchange tube on an upper end and a lower heat exchange tube on a lower end thereof. The upper and lower heat exchange tubes are connected by a plurality of vertical heat tubes. Refrigerant and water serve as heat exchange media to pre-cool (pre-heat) air intake. The auxiliary heat exchanger and water vaporization device can generate liquid and vapor phases transformation to increase water content in the air to enhance heat exchange effect of the air, thereby to enhance heat exchange performance of the heat exchanger, and save energy and reduce thermal pollution.

Abstract: An indoor air-conditioning unit 10 which can effectively deactivate allergens includes an intake grill 11 for drawing in indoor air. Indoor heat exchangers 13, 14, and 15 exchange heat between air drawn in from the intake grill 11 and a refrigerant to thereby cool or heat the air. A diffuser 16 returns the air which has been heat-exchanged with the indoor heat exchangers 13, 14, 15, back into the room. A cross-flow fan 17 blows air which has been drawn in from the inlet and heat exchanged from the diffuser 16 into the room. An allergen deactivation filter 18 is arranged in an internal space 5 through which the air flows and supports an allergen deactivation enzyme. An enzyme activation device maintains the internal space S in an atmosphere for activating the allergen deactivation enzyme.

Abstract: An HVAC system includes a desiccant wheel, wherein the wheel's speed varies with airflow, the wheel is energized for at least a set period at startup, and/or a heat recovery system (e.g., an air-to-air heat exchanger) upstream of the wheel enhances the system's ability to dehumidify air.

Abstract: A method to manufacture an engineered air-conditioning system that satisfies desired air-conditioning specifications, the engineered air-conditioning system including a refrigeration component coupled to at least one of an energy recovery system and an indirect evaporative cooling system, the method comprising: pre-determining a plurality of pre-engineered refrigerated air conditioning units as a plurality of standard refrigeration components, each component satisfying a different air conditioning specification; selecting one of the standard refrigeration components that substantially satisfies the desired air conditioning specification; custom designing at least one of the energy recovery system and the indirect evaporative cooling system to satisfy the desired air conditioning specification; and assembling the selected standard refrigeration components with at least one of the custom designed energy recovery system and indirect evaporative cooling system to create the engineered air conditioning system that

Abstract: A resistive muffler attenuates sound generated by the gas intake and suction valve during compressor operation of a refrigerant compressor. The resistive muffler is assembled inline with the suction gas flow of the compressor and is positioned within the compressor housing. The resistive muffler attenuates the sound generated by the compressor during its operation as refrigerant gas is drawn into the compressor from an evaporator and passes through the resistive muffler in transit to the suction valve and hence to the region of the compressor where the gas is physically compressed. The resistive muffler includes a muffler housing having an intake end and an exhaust end. An acoustic foam assembly is incorporated into the muffler housing.

Abstract: Novel vapor compression evaporative cooling systems which use water as a refrigerant are provided, as are methods for using same. Also provided are novel compressors, compressor components, and means for removing noncondensibles useful in such cooling systems.

Abstract: An apparatus for removing moisture from air which includes a moist air inlet area, a dry air outlet area, a regeneration air inlet area, a regeneration air outlet area and a desiccant medium. A drying fan is provided for drawing the moist air through the moist air inlet area, through the desiccant, as to exit the unit through the dry air outlet area. A regeneration fan is provided for drawing regeneration air through the regeneration air inlet area, through the desiccant medium, so as to exit the unit through the regeneration air outlet area.

Abstract: There is provided a system for pumping thermal energy. The system includes (a) a membrane permeator for removing vapor from a process gas and for providing a vapor-depleted process gas, and (b) a gas-liquid contactor for adding vapor from a liquid to a vapor-depleted gas to produce a vapor-added process gas. The system transfers a quantity of thermal energy from the liquid to the vapor-added process gas, and is also capable of upgrading the thermal energy to a higher temperature. The system may be used for various heat pump applications including chilling and waste heat or low level heat recovery.

Abstract: A dehumidifying apparatus capable of continuously supplying dry air having an absolute humidity of 4 g/kgDA or lower is provided.

Abstract: A method for adjusting and maintaining a desired room climate with regards to temperature, humidity, and carbon dioxide concentration at a given charge of heat, humidity, and carbon dioxide. A proportionate amount of outer air is cooled to a saturation temperature and then dehumidified. The saturation temperature results from the intersecting point of the saturation curve of humid air, and a straight line which extends through the point of state of the air being in the state of the desired climate of the room air, and the point of state of the available outer air in an h,x diagram, i.e., provided with a rise of the quotient of the heat charge in relation to the humidity charge.

Abstract: In a cooling apparatus, air within a room is first introduced into a radiator-type adsorber (1), where moisture contained in the air is adsorbed by A-type silica gel. The resulting low-humidity air is subsequently introduced into a desorption cooler (5), where moisture is desorbed from B-type silica gel, thereby humidifying and cooling the air. The resulting low-temperature air is then used for cooling. When a cooling capacity of the cooling apparatus is lowered, air from a heat source is introduced into the radiator-type adsorber (1), where the moisture is desorbed from the A-type silica gel, thereby recovering the adsorbability thereof. The high-humidity air resulting from the desorption of the moisture is subsequently introduced into the desorption cooler (5), where the moisture contained in the air is adsorbed by the B-type silica gel, thereby recovering the desorption cooling capacity thereof.

Abstract: Described is a climate control system with an air conditioning or a heat pump and a method to provide desirable temperature and humidity of indoor air. In addition to a compressor, a condenser, an evaporator, and an expansion device, the air conditioner/heat pump includes an auxiliary coil, valve means, refrigerant communication means, and control means. In hot climate the system operates in two separate modes: a conventional cooling mode and a cooling mode with enhanced dehumidification. In the conventional cooling mode the valve means direct refrigerant leaving the condenser to the expansion device and then to the auxiliary coil to absorb heat from conditioning air by refrigerant in the auxiliary coil. In this mode an extra amount of liquid refrigerant is stored in the refrigerant communication means.

Abstract: Described is a climate control system with an air conditioning or a heat pump and a method to provide desirable temperature and humidity of indoor air. In addition to a compressor, a condenser, an evaporator, and an expansion device, the air conditioner/heat pump includes an auxiliary coil, valve means, refrigerant communication means, and control means. In hot climate the system operates in two separate modes: a conventional cooling mode and a cooling mode with enhanced dehumidification. In the conventional cooling mode the valve means direct refrigerant leaving the condenser to the expansion device and then to the auxiliary coil to absorb heat from conditioning air by refrigerant in the auxiliary coil. In this mode an extra amount of liquid refrigerant is stored in the refrigerant communication means.

Abstract: An automated apparatus is provided for periodically transferring a pre-selected volume of treatment liquid to a collection pan in order to treat and prevent the clogging of the collection pan. The system includes a treatment liquid reservoir, at least one fluidic coupling, and a structure for enabling the periodic transfer of the volume of treatment liquid from the treatment liquid reservoir to the collection pan by way of the fluidic couplings, causing a treating of the collection pan.

Abstract: Novel vapor compression evaporative cooling systems which use water as a refrigerant are provided, as are methods for using same. Also provided are novel compressors, compressor components, and means for removing noncondensibles useful in such cooling systems.

Abstract: A dehumidifying air-conditioning apparatus has a compact arrangement including an integral combination of a heat pump as a heat source drivable by a thermal energy from an external source and a desiccant air-conditioning unit, and can achieve a high energy efficiency. The dehumidifying air-conditioning apparatus through which processing air and regenerating air flows alternately through a first desiccant 103 has an adsorption heat pump having first and second heat exchanger assemblies 10A, 10B of closed structure each having desiccant heat exchangers 1A, 1B with a second desiccant for adsorbing or desorbing a refrigerant and refrigerant heat exchangers 3A, 3B for evaporating or condensing the refrigerant. The refrigerant heat exchangers of the first and second heat exchanger assemblies communicate with each other via a path through a restriction 7.

Abstract: A cooling assembly for an integrated circuit chip module wherein an evaporator-cooled IC module is enclosed within an insulated housing which is surrounded by an atmosphere of dehumidified air.

Abstract: A portable, potable-water generator for producing high-purity liquid water by condensation of dew from ambient air. The generator employs an air filter to remove particulates and aerosols from the incoming air. An enclosed heat absorber cools the filtered air to its dew point and collects droplets of condensate into a combined condensate collector and storage reservoir. Before discharge, the collected dew is treated in a bacteriostat loop to destroy adventitious living organisms and to filter out undesirable and dangerous contaminants. A recirculation loop provides the ability to recirculate stored condensate during periods of inactivity. Further, quick disconnect fittings and variable length flexible tubing allows use of the invention to serve remote dispensers and/or appliances and allows use of municipal water treated through the apparatus in low condensate situations.

Abstract: In accordance with the present invention, a desiccant/evaporative cooling system for providing cool and dry air to an enclosed structure is disclosed. The system includes a desiccant chamber, at least one evaporative cooler, and a heat exchanger. The desiccant chamber intermittently receives and drys a first airstream from the enclosed structure to produce a second airstream. The evaporative cooler(s) receive and cool the second airstream to produce a third airstream at a temperature below a dew point for an ambient airstream. The heat exchanger uses the third airstream for absorbing heat from the ambient airstream to produce a fourth airstream before the fourth airstream is forced into the enclosed structure. Condensate is removed from the ambient airstream on the dry side surface of the heat exchanger. In another embodiment, a method for conditioning an ambient airstream in order to provide cool and dry air to an enclosed structure is disclosed.

Abstract: A system for condensation and collection of atmospheric water is provided made up of a system having an aperture pipe at the top for airflow, a condensation material providing condensation surfaces within the system; openings, ducts or other spaces for conducting a flow of moisture-containing air from outside the system where it comes into contact with the condensation surfaces; and a water tank containing water heated during the daytime by the sun or by another heat source near the top of the system in the aperture pipe for heating surrounding air from which the water has been removed by condensation on the condensation surface, so that air flows out of the system through the aperture pipe at the top, drawing moisture-laden air from outside into the system.

Abstract: A heat exchanger comprising a precooler and reheater core adjacent a chiller core, first heat transfer passages extending through both cores through which incoming air passes in a first direction, second heat transfer passages extending through the chiller core through which coolant passes in heat exchange relationship with incoming air and perpendicular to the first direction, and third heat transfer passages extending through the precooler and reheater core through which cooled air from the chiller core passes in heat exchange relationship with the incoming air and perpendicular to the first direction. A manifold contiguous with both cores conducts chilled air from the chiller core to the third set of heat transfer passages.Incoming air is chilled in the chiller core and thereafter exchanges heat with the incoming air in the precooler and reheater core to precool the incoming air to form water droplets and to raise the temperature of the chilled air to a usable temperature.

Abstract: In a main controller for use in an air conditioner for controlling temperature/humidity of an intaken outside air, a controlling line setter (18) sets each of control lines (J.sub.1 -J.sub.5) on a psychrometric chart table (13), in which an aimed temperature/humidity line (Lo) is formed by connecting an upper limit state point (Ps) and a lower limit state point (Pw) of condition air from each of the outside air state points (G.sub.1 -G.sub.5) to the aimed temperature/humidity line (Lo). The controlling line (J.sub.1 -J.sub.5) is formed by connecting necessary lines selected from a main heating line (H.sub.L) showing the heating operation of a main heater (H), an adiabatic humidifying line (W.sub.L) showing the humidifying operation of an adiabatic humidifying device (W), a cooling line (C.sub.L) showing the cooling operation of a cooler (C) and an auxiliary heating line (RH.sub.

Abstract: A portable, potable-water generator for producing high-purity liquid water by condensation of dew from ambient air. The generator employs filtration subsystems to remove particulates and acrosols from the incoming air. An enclosed heat absorber cools the filtered air to its dew point and collects droplets of condensate into a closed system. The collected dew is further continually treated in a bacteriostat loop to destroy adventitious living organisms and to filter out undesirable and dangerous contaminants. All the subsystems are fail safe-interlocked to disable the generator immediately and prevent delivery of water if any one of them stops functioning within predetermined safe limits.

Abstract: An ozone/supersonic wave insect expelling device has an ozone generating circuit and a supersonic wave generating circuit which use the same power source so to generate supersonic wave for expelling pest insect, and for generating ozone for clearing the air. Therefore, ozone/supersonic wave insect expelling device has a dual effect.

Abstract: An apparatus for producing dried and dehumidified cooling air for bulk stored grains and other produce from which moisture evaporates comprising a multiplicity of narrow elongate beds 2 of desiccant between which a multiplicity of heat exchange channels 3 providing heat exchange surfaces 4 in contact with each bed 2 of desiccant are provided. Air to be treated is passed through the beds 2 of desiccant while secondary air is forced through the heat exchange channels 3 to cool and remove the heat of sorption collected by the desiccant from the air being treated. desiccant can be regenerated by passing heated air through the beds.

Abstract: There is provided an air conditioning apparatus including an air duct and provided therein with a blower, a heater, a humidifier and an air cooling dehumidifier comprised of an air-fluid heat exchanger,characterized in that:the said air cooling dehumidifier is disposed at a site that is shifted transversely from an air blowing outlet of the said air duct.

Abstract: An air conditioning system for a semiconductor clean room includes a chemical filter between an air conditioner including a humidifier and a ULPA filter of the clean room, for ionizing chemical impurities using moisture supplied from the humidifier and then adsorbing the ionized chemical impurities by using the chemical filter. The chemical filter is installed downstream of the humidifier, which applies phosphoric acid for the prevention of scale-formation. This downstream location allows the chemical filter to prevent the phosphoric acid from being included in the fresh air as a new chemical impurity, which makes regulation of temperature and humidity of the air possible without having to use a special and expensive pure steam system.

Abstract: A portable, potable-water generator for producing high-purity liquid water by condensation of dew from ambient air is described. The generator employs filtration subsystems to remove particulates and aerosols from the incoming air. An enclosed heat absorber cools the filtered air below its dew point and collects droplets of condensate into a closed system. The collected liquid dew is further continually treated in a bacteriostat loop to destroy adventitious living organisms and to filter out undesirable and dangerous contaminants. All the subsystems are failsafe-interlocked to disable the generator immediately and prevent delivery of water if any one of them stops functioning within predetermined safe limits. Hybrid embodiments of the water generator attached to or integrated with refrigeration-type appliances such as water coolers, refrigerators, freezers, icemakers and air-conditioners are illustrated.

Abstract: There is provided a water feed device for humidification, comprising: an outflow reservoir that is disposed above a humidifier for feeding water into the humidifier by way of a permeation and that is provided with an overflow dam for maintaining a level of the water in the outflow reservoir substantially constant; an inflow reservoir that is disposed upwards of the outflow reservoir and that is provided with a flow inlet; a partition plate that is disposed between the inflow reservoir and the outflow reservoir; and a plurality of drip feed members which are provided in the partition plate for allowing the water in the inflow reservoir to drop by gravity in a form of droplets into the outflow reservoir.

Abstract: A portable, potable-water generator for producing high-purity liquid water by condensation of dew from ambient air. The generator employs filtration subsystems to remove particulates and aerosols from the incoming air. An enclosed heat absorber cools the filtered air to its dew point and collects droplets of condensate into a closed system. The collected dew is further continually treated in a bacteriostat loop to destroy adventitious living organisms and to filter out undesirable and dangerous contaminants. All the subsystems are failsafe-interlocked to disable the generator immediately and prevent delivery of water if any one of them stops functioning within predetermined safe limits.

Abstract: A method and apparatus for conditioning the temperature and humidity of unrecycled ambient air within a certain climatic window of parameters to a desired point within a certain conditioned window of parameters is provided that comprise directing part of the ambient air through a cooling coil and humidifier connected in series and directing the other part of the ambient air through a bypass duct and recombining the bypass air with the conditioned air to create an air stream at the desired temperature and humidity. The air passing through the cooling coil and humidifier is overcooled and then brought to the desired condition upon combination with the bypass air.

Abstract: A method of forming an artificial snow layer is disclosed. Water content is added to to atmosphere above a floor by a humidifying device, or water mist is added to the atmosphere by a water-mist supplying device. The water content or the water mist is frost-frozen by a refrigerating device 6 incorporated at the floor, thus forming on the floor an accumulated frost layer as an artificial snow layer. A method of maintaining the formed artificial snow layer is also disclosed. After the formation of the artificial snow layer, an atmosphere refrigerating device is stopped or reduced in its operation so as to release the maintenance of the atmosphere below the freezing point. Then, the refrigerating device of the floor is operated to prevent melting of the formed artificial snow layer so as to prevent coagulation of water content in said atmosphere on a surface of the artificial snow layer through humidity adjustment of the atmosphere by a humidity adjusting device.

Abstract: An apparatus and method for conditioning air in deep, underground mines. The apparatus includes an air passageway connecting an air inlet for ambient air and an air outlet for conveying dried air to the mine's working level. The air passageway provides for dehumidification of the air by passing it through activated adsorbent particles, preferably zeolite, and for reactivating the particles by reverse heating cycles, or revolving the adsorbent beds through separate air flows, one for dehumidification of the air, and the other for regeneration of the adsorbent particles. The dehumidification unit contained within the air passageway is sufficiently efficient to reduce the moisture content of the air to less than 0.001 kilograms of water per kilogram of air. A humidifier at the mines's working level receives the dried air at an increased pressure and temperature due to the mine's depth, and by evaporative cooling reduces the air temperature so that it is cooled to 25.degree. C. dry bulb/20.degree. C.

Abstract: A process is disclosed for maintaining the temperature and humidity of a closed chamber within preferred ranges when contributions in water vapor and energy additions to the chamber from plants and humans vary over time. Enough water is evaporated into the air of the chamber such that when added to the water vapor added by transpiration a constant maximum rate of water vapor addition is maintained, thereby increasing air humidity and decreasing air temperature. A portion of warm moist air from the chamber is circulated to a water recovery heat exchanger module to remove additional sensible heat and to recover the amount of water evaporated in the chamber; cool dry air is returned to the chamber.

Abstract: The present invention describes a method and apparatus for conditioning air utilizing a desiccant based air conditioning system requiring substantially less regeneration energy than typical systems. This regeneration energy reduction is accomplished through the use of two separate desiccant devices and an indirect evaporative cooler having both a wet and dry side for air flow-through. The first desiccant device regeneration air is first passed through the wet side of the indirect evaporative cooler wherein it is humidified and heated. This air is then dehumidified by passing through the second desiccant device which operates at a high moisture content. This results in a substantial amount of moisture being absorbed from the first regeneration air stream causing a substantial air temperature increase and thereby, reducing the auxiliary heat required. The second desiccant device may be regenerated with ambient air.

Abstract: Moisture is removed from the compressed feed air to a separator and collected in liquid form in a reservoir. The humidity in a controlled atmosphere container is monitored and moisture is taken from the reservoir and added to the container in order to provide an ideal environment for the preservation of foodstuffs.

Abstract: A process for conditioning a gas containing the vapors of a volatile substance, in which the gas is placed sequentially in contact with successively more concentrated solutions of an absorption liquid on cooled surfaces, such absorption liquid consisting of a solution of said volatile substance and at least one non-volatile substance. The vapors in the gas are isothermally absorbed into the absorption liquid upon such contact, thereby diluting the concentration of the absorption liquid. The diluted absorption liquid is concentrated by multi-stage evaporation in a multi-stage evaporator. The concentrated absorption liquid is recycled back to the cooled surfaces.

Abstract: A method and apparatus for heat and mass transfer is described that is applicable to: concentration, crystallization, purification, fractionation, stripping, absorption, and/or heat exchange for liquid media; drying for solid or gel media; and temperature and humidity modification for gas media. Generally, using a moving gas, such as air at a constant and atmospheric pressure, a continual change in a vapor-liquid equilibrium is created between proximate but continually changing gas and liquid temperatures within energy transferring chambers. Chamber wetting, implemented segmentedly, allows mass transfer into and from the moving gas. A forced temperature differential in each chamber causes heat transfer between chambers by means of thermally conductive partitons. This transfer can allow condensation causing further evaporation in the opposite chamber resulting in a recycling of energy.

Abstract: Here is disclosed a humidifier in which a water reservoir is provided on a heat radiating side of an element having Peltier effect and said element is energized so that a quantity of water filling said reservoir is heat-evaporated by calorific power radiated from said element and water vapor thus obtained is used to protect foods, cake, dairy products etc. against drying. More preferably, a blowing fan is provided on the cooling side of the Peltier element and cooled air stream is exhausted together with the air stream containing heated stream through a common outlet. Said humidifier may be located on the outlet side of cooled air supplied form a cooling coil of a display case to avoid inconvenience that humidified air might be brought into direct contact with the cooling coil and condensated, with loss of humidified steam.

Abstract: A heat pump is disclosed which includes a first packed bed of liquid desint for removing moisture from outside air in the heating mode of operation, and a pump for transferring the moisture laden desiccant to a second packed bed which humidifies condenser heated inside air by adding water vapor to the air. The first packed bed, by removing moisture from the outside air before it passes through the heat pump's evaporator coils, prevents frost from forming on the coils. In the cooling mode of operation the second packed bed of liquid desiccant removes water vapor from the air inside of the building. The moisture laden desiccant is then transferred to the first packed bed by a second pump where condenser heat transfers the moisture from the desiccant to outside air.

Abstract: The air in a greenhouse is dehumidified using a direct-contact heat exchanger utilizing concentrated brine. The diluted brine produced when water vapor in the greenhouse condenses on the concentrated brine is regenerated in a fuel-fired boiler whose products of combustion, carbon dioxide and water vapor, are passed into the greenhouse. The products of combustion provide the desired level of carbon dioxide in the greenhouse; and the excess water vapor in the products of combustion as well as a significant portion of the water vapor produced by plants, growing in the greenhouse are removed by the hygroscopic concentrated brine.

Abstract: A desiccant air conditioning system incorporates a desiccant material structure in the form of a heat exchanging desiccant bed. The heat exchanging desiccant bed is formed by granular desiccant material defining air passageways and liquid circulating channels for circulating heat transfer liquid in heat exchange relationship with the desiccant bed. The desiccant bed may include at least one stack of substantially parallel spaced-apart thermally conducting fins or plates with the granular desiccant material intimately bonded to the surfaces of the plates. The plates are provided by tube sheets or tube fins which include the tubes or channels for circulating heat transfer fluid. The method of air conditioning contemplates drawing building air to be conditioned through an adsorb air passageway; preconditioning the air by initially moisturizing or humidifying the air to substantially 100% relative humidity and adding heat to the moisture-laden air extracted from the air exiting from the desiccant bed.

Abstract: In a method of operating an air conditioner for supplying an air from the air conditioner to the inside of a chamber, the temperature of the air supplied to the inside of the chamber upon starting the operation of the air conditioner is increased to an aimed temperature while maintaining the supplied air temperature higher than the temperature at the surfaces of the inner wall of the chamber and/or the equipments installed therein but lower than the temperature the dew point for which is lower than the surface temperature, whereby the moistures contained in the air supplied from the air conditioner is prevented from condensating to form water droplets on the inner wall of the chamber and/or the equipments installed therein. The inside of the chamber can be controlled to an aimed air-conditioned state rapidly without causing undesired dewing phenomenon even during winter or like other cold conditions.

Abstract: A humidity reduction duct assembly for attachment over the air inlet of an evaporative cooler having a tray assembly insertable therewith transversely thereacross intermediate the duct inlet and the cooler inlet so that air drawn through the duct passes across and through the tray assembly. The tray assembly is formed of a pair of spaced rigid members having a plurality of foraminous cylinders disposed therebetween in spaced parallel relationship to each other and filled with an air permeable desiccant. The duct removes excessive humidity from the ambient air and enhances the efficiency of the evaporative cooler.

Abstract: Outdoors and indoors air streams are induced to travel in opposite directions through the adjacent passages of a plate-fin heat exchanger. A water stream is simultaneously induced to circulate through the passages occupied by the cooler of the air streams. Heat is transferred across adjacent passages, causing vaporization of a portion of the water stream into its accompanying air stream, thus keeping the cooler stream saturated with water vapor. The hotter air stream is cooled and dehumified while the cooler one increases in temperature and humidity content. Very close temperature approaches can thus be achieved at the heat exchanger, with the resultant economies in the energy requirements for ventilation.

Abstract: The present invention uses a dessicant and a means of drying out or changing the system by the use of off-peak electric power releasing. The heat is then released as required during periods of peak electric power by the reintroduction of moisture. The system includes a source of air and a fan for circulating the air in a circulation system including an outgoing loop and return loop for the circulating air. Selectively operatable evaporator heat exchanger, air wetting apparatus, and air heating apparatus are disposed in the outgoing loop of the circulating air. A dessicant-containing enclosure used to provide heat storage, and having air inlet means thereinto from outgoing loop the circulating and an air outlet means therefrom to the return loop of the circulating air is disposed in the circulation system.

Abstract: A humidity control apparatus characterized in that a dehumidifying mechanism, which comprises a refrigeration circuit composed of a compressor, a condenser, a decompression device, and an evaporator, a fan for drawing in air past the circuit, and a tank for collecting and storing the moisture in the condensed form, is combined with a humidifying mechanism comprising an intake duct into which part of the air current is bypassed, taking advantage of the dynamic pressure exerted by the fan, ultrasonic humidifying-vapor generator means wherein the air from the intake duct is mixed with water vapor, and a discharge duct through which the air-vapor mixture is discharged to the outside, said generator means being supplied with water from said tank.

Abstract: A method and apparatus for providing temperature and humidity controlled air to an enclosed space within a building to achieve desired conditions of temperature and humidity therein, and which is characterized by the maximum use of the outside air for cooling purposes to thereby minimize the load on the refrigeration unit and thus also minimize the operating expense thereof.