Abstract: To avoid cleaning costs and to reduce the risk of cross-contamination, a water bath for use in incubators includes a profiled receiver, open at least at the upper face, preferably at the end faces and the upper face, with receiver surfaces extending in the longitudinal direction. A prefabricated disposable vessel for liquid open at the upper face includes vessel walls that lie flush on the receiver surfaces of the receiver. Fastenings are used fix the disposable vessel on the receiver. The water bath also includes a liquid supply, designed for filling the disposable vessel with liquid.

Abstract: A desiccant wheel is provided to be rotatable. Through the body of the wheel or a surface adsorbent, water vapor in humid air flow is adsorbed. By passing a high-temperature air flow through the wheel, the body or surface coating is regenerated with moisture removed. Along a cross-section radial, the wheel is divided into different areas. The body has three-dimensionally inter-connected pores. The pores can be of different types. The wheel is a complete concentric cylinder or a concentric cylinder comprising equal or unequal sectors. The equal or unequal sectors are separated with each other. The wheel can rotate at a fixed speed for continually repeating a process of adsorbing, transiting, and regenerating. Thereby, drying can be carried out without causing physical or chemical change to heat-sensitive material, which also improves drying efficiency, reduces size, lowers power consumption, and helps in carbon reduction for industry.

Abstract: A wicking evaporative humidifier in which cartridge that includes a pad is inserted directly into an air flow through the wall of a duct that distributes conditioned air throughout a structure. A portion of the cartridge may be inserted into a tray filled with water, which may use capillary forces to wick water through the cartridge to the area of the cartridge that is inserted through the duct and within the air flow. Air passing through duct and through and around the cartridge pad evaporates the moisture wicked into the pad and distributes the moisture throughout the structure.

Abstract: In an illustrative embodiment, an aircraft galley ducting assembly provides airflow to at least one compartment of an aircraft galley monument. The ducting assembly may include a supply air duct that provides a supply airflow path to a compartment that includes an inlet port mounted to a compartment surface. A return air duct may provide an exit airflow path for return air that has circulated throughout the compartment and includes an outlet port mounted to the compartment surface. An airflow adjustment apparatus with an airflow adjustment surface is positioned within the supply airflow path of the supply air duct or the exit airflow path of the return air duct to cause a modification of airflow properties for air passing across or through the airflow adjustment surface.

Abstract: A humidifier assembly for capturing moisture from the furnace and releasing the moisture into an area includes a furnace. A housing is coupled to the furnace. An inlet is coupled to the housing. The inlet is coupled to a drain line on the furnace. Condensation from the furnace is directed into the housing. A filter is removably coupled to the housing. The filter captures the condensation from the furnace and converts the condensation into an evaporate. The evaporate is released into the furnace. An outlet is coupled to the housing. An overflow line is coupled to the outlet. A reservoir is coupled to the overflow line to capture excess condensation. A secondary reservoir is fluidly coupled to the reservoir. A heating element in the secondary reservoir generates steam delivered to discharge ductwork of the furnace.

Abstract: A system that provides effective and efficient introduction of water droplets into an air flow. The water droplets are sufficiently small so as to evaporate primarily before leaving the mixing enclosure where the droplets are injected by spray nozzles. Large droplets are kept to a minimum, thus reducing condensation and water accumulation to a very small amount. An amount of water usage is significantly less than that of a conventional evaporative humidifier of the same capacity. The present system may be placed in an enclosure that can readily replace other conventional evaporative humidifiers in enclosures. The present enclosure and system may be installed in lieu of a conventional enclosure and evaporative humidifier with minimal effort. The present enclosure has features that facilitate droplet to air mixing, viewing, humidification, and testing. In permissible situations, the present system may replace a conventional system but retain the conventional enclosure.

Abstract: Systems and methods for circulating air in an enclosed environment are disclosed. In some embodiments, the system includes an inlet to receive air from outside of the enclosed environment and an air handling unit coupled to the inlet and also configured to receive circulated air from the enclosed environment. The air handling unit can be configured to affect a temperature of at least one of the received outside air and the received circulated air. Based on the received outside air and the received circulated air, the air handling unit can be further configured to generate air for supplying to the enclosed environment.

Abstract: The present invention relates to a superparticle atomizing device and, more specifically, to a superparticle atomizing device having an inner plate provided at the upper part of an ultrasonic vibrator inside a housing and having a circulation passage formed at the circumference of the inner plate of the inside of the housing by using the rapid flow rate of the air to be ventilated to the inside of the housing through a blower, and thus only liquid microparticles generated at the lower region of the inner plate by the ultrasonic vibrator are pulled up to the upper region thereof, thereby allowing the liquid microparticles to be atomized through an atomizing hole and allowing the liquid microparticles to be rapidly diffused into the air with rapid ventilation air.

Abstract: A method for the regulated humidification and temperature control of a gas mixture in an inner chamber of an incubator, which inner chamber is sealed off from the surroundings by a housing, includes conducting heat from at least one condensation surface inside the incubator, which at least one condensation surface is separate from the inner surfaces of the inner chamber, is conducted out of the incubator to the outside through a wall delimiting the inner chamber by a heat conductor. Outside the incubator, the heat conductor is connected to a cooling body which releases the heat to the relatively cold ambient air. The method allows dispensing with a cooling unit and at the same time avoid sources of contamination due to moisture condensing out.

Abstract: An evaporative HVAC apparatus is disclosed. In at least one embodiment, the apparatus provides an at least one absorbent wicking layer having a first surface and an opposing second surface, and an at least one thermal layer also having a first surface and an opposing second surface. The second surface of the at least one thermal layer is formed immediately adjacent to the first surface of the at least one wicking layer. An at least one fluid line is in fluid communication with the at least one wicking layer. Thus, a fluid is selectively delivered to the wicking layer through the at least one fluid line which, in turn, permeates the at least one thermal layer and evaporates into the air located immediately adjacent the exposed first surface of the at least one thermal layer, thereby affecting the temperature of the air.

Abstract: The invention provides a device and a method for liquid atomization, employing a hollow body with a closed surface perforated with a plurality of point orifices and connected to a compressed gas. The body is submerged in a liquid to be atomized, with some orifices immersed in the liquid and others emerged from it. The system can be scaled-up according to the need.

Abstract: A reservoir configured to retain a volume of liquid for use in an apparatus for humidifying a flow of pressurized air comprises a base portion and a lid portion. The reservoir may be configured to improve its level of thermal contact to the heater plate using the flow of pressurized air. The reservoir may be configured to improve thermal contact between the reservoir and the heater plate by pre-compression upon engagement of the reservoir with the humidifier. The reservoir may comprise a removable intermediate portion, which may include the inlet tube and/or the outlet tube, for improved access for cleaning. The reservoir may also be configured to prevent overfilling. Overfill prevention features in the reservoir may include defined flow egress paths and/or formation of air locks.

Abstract: An air blower comprises an outer housing and an inner shell body. The outer housing is formed with at least one first suction inlet and at least one second suction inlet, a first high-pressure generation part having a first fan for forming a first high-speed airflow and a first discharge outlet are formed between the outer housing and the inner shell body, and a first airflow passage is defined by the first suction inlet, the first high-pressure generation part and the first discharge outlet; and the inner shell body includes a second high-pressure generation part having a second first fan for forming a second high-speed airflow, the front end of the inner shell body is formed with a second discharge outlet, and a second airflow passage spaced from the first airflow passage is defined by the second suction inlet, the second high-pressure generation part and the second discharge outlet.

Abstract: The invented system used in wet cooling tower, restore outlet fog of cooling tower into collection basin and consequently cooling water cycle. This invention comprises three main components; pump and its pertaining piping, waterfall and micron fog eliminator. In the first stage, the air containing fog is passed through a waterfall before exhausting. This action causes some portions of fog to condensate and fall down, remaining droplets of the fog grow and together with air cross the fog eliminator blades. Fog's droplets are entrapped between blades, leave the air, and restore to the tower. Therefore, humidity of exhausted air from tower will be effectively reduced.

Abstract: A moisture delivery apparatus comprises a liquid reservoir with liquid, a plurality of wicks, an enclosure with panels, and a supporting and adjusting structure for supporting and adjusting the body of the plurality of wicks to emit more or less of vapor of the liquid into the enclosure to provide moisture, wherein the supporting and adjusting structure may be injectors, stanchion, baffles, and fasteners on panels.

Abstract: Energy-saving method/system for heating and humidifying a building or car's saloon are disclosed. The method includes—drawing in an outside airstream,—passing it via a dry channel and then, via a wet channel, in an opposite direction. Thereafter, the outside airstream is heated and directed to the building as supply air. An exhaust airstream from the building is introduced into a product channel. The wet channel is situated between the dry and product channels. The wet channel is in pairwise heat-exchange interactions with the dry and product channels. Water vapor, contained in the exhaust airstream, is condensed, discharged into the atmosphere at a temperature closed to the dew point. The outside airstream, passed along the wet channel, is transfer-heated and humidified by the exhaust airstream. Water from the product channel is used for wetting the wet channel. The system includes at least two membranes arranged between the channels.

Abstract: A car having a water box comprising an outer face, an inner face, an air inlet opening, an air outlet opening and a water outlet opening. The inner face forms a water separating space that is connected to the air inlet and outlet openings and the water outlet opening. The water outlet opening discharges water out of the separating space. An air conditioner is connected to the air outlet opening to feed air from the water box into the air conditioner. An air feeding unit sucks the air into the air conditioner via the air inlet opening. The air feeding unit is designed as a suction fan. The water box comprises a wall that comprises fibers forming a non-woven fabric i.e. felt.

Abstract: An adapter for selectively providing fluid to a device from one of multiple fluid sources has a body with a first inlet for connecting a first one of the multiple fluid sources to the device and a second inlet for connecting a second one of the multiple fluid sources to the device. The adapter also includes a handle that is movably coupled to the body and includes an access control element. The handle is configured to secure the body to a device when the adapter is in either of a first position or a second position that is rotated relative to the first configuration. The access control element obstructs access to the second inlet when the adapter is secured to the device in the first position and the access control element obstructs access to the first inlet when the adapter is secured to the device in the second position.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) system includes: a furnace having a furnace heat exchanger; and an indoor HVAC unit having a refrigerant heat exchanger. At least one of a component of the furnace and a component of the indoor HVAC unit are selectively removable from an airflow path of the HVAC system.

Abstract: A tub is configured to contain a supply of water and be inserted into a chamber of a humidifier. The tub includes a tub base configured to contain a supply of water and a tub lid connected to the tub base. The tub lid includes an inlet configured to receive a flow of breathable gas to be humidified and an outlet for the humidified flow of breathable gas. The tub further includes a water level indicator configured to indicate a level of the supply of water in the tub base. The water level indicator includes an inclined portion configured to direct the flow of breathable gas from the inlet away from the outlet. The water level indicator may be visible through the inlet.

Abstract: An intelligent door lock system includes a position sensing device configured to be coupled to a drive shaft of a lock device. The position sensing device senses position of the drive shaft to assist in locking and unlocking a lock of a lock device. A circuit is coupled to an engine with a memory. A haptic device is coupled to the circuit. The haptic device provides a visual indication that the lock has reached a final position. A device converts energy into mechanical energy and is coupled to the drive shaft. The positioning sensing device, the circuit, the position sensing device and the device that converts energy operate to rotate the drive shaft to lock and unlock the lock device.

Abstract: A method is provided for using an intelligent door lock system at a door. The intelligent door lock system is supplied to an individual. The intelligent door lock system includes, a position sensing device, an engine, a circuit coupled to the engine, an energy source coupled to the circuit and a device that converts energy into mechanical energy. The position sensing device of the intelligent door lock system is coupled to a drive shaft of a lock device, and the position sensing device is coupled to the circuit. Energy is supplied from the energy source to the device that converts energy into mechanical energy. The device that converts energy into mechanical energy rotates the drive shaft sufficiently to unlock or lock a lock of the lock device.

Abstract: A device for providing active, closed-loop humidity control to the environment surrounding and within a hollow-bodied wood instrument. The device includes at least one humidity sensor, and preferably two, one for monitoring the environment's humidity, and one for monitoring the device's response. With data from these humidity sensors, a microcontroller determines whether the system should take action to increase the humidity of this environment by controlling a vapor-generating device. Water is supplied to this device by a water reservoir.

Abstract: The present invention discloses an electric fireplace having a humidifying device. The electric fireplace includes a casing. A flame imitation device, a heating device, an air purifying device, the humidifying device, and a touch control panel are provided in the casing. The electric fireplace is combined with the flame imitation device, the air purifying device, and the heating device to provide multiple functions. The user can watch the realistic flame and inhale fresh but not dry warm wind. The humidifying device includes a water container, a cotton rod, a fixing knob, an atomization plate, a hollow pipe, and a fog output box. The humidifying device delivers the water to the atomization plate through the cotton rod to generate atomized particles. The present invention has a simple structure and can be produced easily.

Abstract: The solar powered evaporative air conditioning system is especially adapted for use in areas wherein the climate conditions are hot and dry. A tunnel-shaped, light weight, inflatable structure is employed to enclose a space to be cooled, the space having a floor or ground area enclosed by the structure. Solar panels are disposed on the roof of the structure to generate electrical energy to power the air conditioning system. The inflatable structure is designed with a roof having a hyperbolic paraboloidal configuration such that a narrow cross-sectional area or throat area is formed between the roof and ground.

Abstract: An improved humidifier system for adding humidity to an air stream of an HVAC system. The humidifier system includes an air path that is configured to accept air from a first HVAC duct and return air to a second HVAC duct. A damper is disposed in the air path to selectively substantially block the flow of air in the air path, or to substantially not block the flow of air in the air path. In some cases, the damper may be a motorized damper, and the humidifier system may include a controller that is configured to cause the motorized damper to not substantially block the flow of air in the air path during a call for humidifier operation, and to substantially block the flow of air in the air path after the call for humidifier operation ends. Alternatively, the damper may be manually actuated, and an HVAC controller may be configured to notify when the damper should be moved (e.g. between seasons).

Abstract: Environment conditioning system of the inner space of a data center (2) is provided with electronic equipment (3). The system (1) includes a passive air-to-air heat exchanger (4), configured to enable heat exchange, without air cross-contamination, between an outer air flow (5) and a recirculation air flow (6). The recirculation air flow (6) comes from the inner space of a data center (2) and it is intended to condition it after passing through the air-to-air heat exchanger (4).

Abstract: A water supply assembly is provided that includes a support cap, an inlet port and a valve assembly. The valve assembly includes a valve, an outlet port and a float. The support cap has a shape that is configured to cover a reservoir opening into a reservoir of an autoclave, which reservoir opening has a maximum inner diameter that is between 1.5 and 3.0 inches. The float has a shape that is operative to pass through the reservoir opening and into the reservoir when the support cap is placed on the autoclave and is supported by the autoclave in a position to cover the reservoir opening of the autoclave. When the support cap is placed over the reservoir opening, with the float positioned in the reservoir, the inlet port extends outside the reservoir. The float is operative to move from a first position to a second position responsive to a decrease in a water level in the reservoir which causes the valve to open and enable water provided to the inlet port to pass out of the outlet port and into the reservoir.

Abstract: A method and apparatus for humidifying residential and commercial buildings in which a flue gas generated by a residential of commercial furnace is provided to one side of a porous liquid water transport membrane and habitable space air is provided to an opposite side of the porous liquid water transport membrane in an amount sufficient to provide a habitable space air to flue gas volume flow rate ratio of at least 8.3:1. At least a portion of the water vapor in the flue gas is condensed, providing condensed liquid water which is passed through the porous liquid water transport membrane to the habitable space air side of the porous liquid water transport membrane. On the habitable space air side of the membrane, the condensed liquid water is evaporated into the habitable space air, producing humidified habitable space air which is provided to the rooms of the residential and commercial buildings. Beneficially, no supplemental water source is required for the humidification process.

Abstract: An HVAC burner box includes a burner bank, a manifold and an air director located within an enclosure. The burner bank is oriented such that an outlet end of the burner bank is directed toward a first end of the enclosure. The manifold is located within the enclosure and adjacent an inlet end of the burner bank. The air director has a diffuser that is coupled to a side of the enclosure. The diffuser includes a plurality of openings located therethrough. The diffuser is configured to direct a first portion of a received airstream through the opening and toward the burner bank. The diffuser is further configured to send a second portion of the received airstream toward the manifold.

Abstract: A vent system for improving the efficiency and/or reducing emissions of a combustion device is disclosed. The vent system may include an outer pipe and an inner pipe having a longitudinal section that is permeable to water or water vapor and is longitudinally disposed within the outer pipe. The inner pipe defines a first passageway and the outer and inner pipes define a second passageway therebetween. As the moisture and/or heat are transferred from the flue gas to the intake air through the longitudinal section of the inner pipe, the efficiency of the furnace may be improved and the NOx emission of the furnace may be reduced.

Abstract: A method and apparatus in connection with a vortex tube process. A pressurized medium flow is fed into a nozzle inlet. The medium flow expands while moving forward. The medium flow is twisted while entering a working tube. The twisted medium flow is divided into separate cold and hot flows. The cold flow is discharged from the vortex tube via a cold flow head after going through a hole in the center of a wall limiting a first end of the working tube. The hot flow is discharged from the vortex tube via a hot flow head after passing through the working tube having a flow valve at its second end. Parameters of thermodynamic processes in the vortex tube are controlled: by regulating the hot flow rate in the hot flow head by regulating the medium flow in the nozzle inlet, by regulating an efflux speed of the cold and/or hot flows in the vortex tube, and/or by intensification of heat transfer in the vortex tube by mechanical, chemical and/or electrical assemblies therein.

Abstract: A method capable of enhancing the heat exchanging and humidifying performance of a warming stove and a warming stove with a humidifying function. Water fog is guided into the initial end of an air channel of a stove body, so that the water fog flows through a heat exchange region in the air channel along with circulating air; and the water fog is gasified under a high temperature, so that the circulating air is changed into wet air in the process and carried into a warming space from an outlet at the tail end of the air channel. Heat exchange function is greatly enhanced, and more heat energy can be taken away by humidity-containing gas in each unit volume.

Abstract: A method and apparatus for humidifying residential and commercial buildings in which a flue gas generated by a residential of commercial furnace is provided to one side of a porous liquid water transport membrane and habitable space air is provided to an opposite side of the porous liquid water transport membrane in an amount sufficient to provide a habitable space air to flue gas volume flow rate ratio of at least 8.3:1. At least a portion of the water vapor in the flue gas is condensed, providing condensed liquid water which is passed through the porous liquid water transport membrane to the habitable space air side of the porous liquid water transport membrane. On the habitable space air side of the membrane, the condensed liquid water is evaporated into the habitable space air, producing humidified habitable space air which is provided to the rooms of the residential and commercial buildings. Beneficially, no supplemental water source is required for the humidification process.

Abstract: A method and apparatus are provided for reducing waste effluent from a system including a boiler and a wet electrostatic precipitator, the waste effluent having blow down water discharged by the boiler during a blow down operation and bleed water discharged by the wet electrostatic precipitator. The method includes collecting the blow down water and providing it to the wet electrostatic precipitator as a makeup water supplement, evaporating a portion of the bleed water and leaving residual bleed water, providing the evaporated bleed water to the wet electrostatic precipitator as a further makeup water supplement, and using the residual bleed water to quench ash produced by combustion of solid fuel by the boiler. The apparatus includes an evaporator that provides direct contact between hot boiler flue gas and the bleed water such that a portion of the flue gas is quenched before being provided to the wet electrostatic precipitator.

Abstract: A drain pipe 54 includes an upper end portion 54a which is connected to a concave 38a of a leading end 38 of an exhaust tube 34, and a lower end portion 54b which is opened to the inside of a warm air furnace below the concave 38a. The lower end portion 54b is formed as a tubular portion where a membrane is formed at a plane orthogonal to an axis line 54d by a surface tension of a drain. A leading end 54e of the tubular portion is formed as an opening 54f with an area large enough such that the membrane is not generated by the surface tension of the drain.

Abstract: A high pressure water injection humidifier includes a filtration system to filter suspended particles from an incoming water supply and provide filtered water to a high pressure pump driven by a constant speed motor, which in turn provides pressurized water to a plurality of exit nozzles, each exit nozzle having a precision orifice that atomizes the pressurized water into a mist, where the volume rate of the mist is dependent only on the motor speed and the diameter of the precision orifice. Proper nozzle flow can be determined by monitoring the drive current to the constant speed motor.

Abstract: A humidification system includes a housing mountable into an air duct, that includes a base frame, a cover and at least one open end panel. The base frame is mountable to an opening in the air duct that is shaped and configured to align with the base frame. The cover attaches to the base frame with the open end panel between the base frame and cover. The air outlet is through the open end panel. An evaporative element is positioned between the air inlet and air outlet. Controlling humidity output provides moisture to the evaporative element when needed. The bypass frame includes louvers that are positioned within the air inlet, where the louvers are sized to extend into the air duct. The louvers are graduated in size. After passing through the housing, an air return directs humidified air from the open end panel to a low pressure air duct.

Abstract: A high pressure water injection humidifier includes a filtration system (11) to filter an incoming water supply and provide filtered water (6) to a low volume high pressure pump (12) driven by a constant speed motor (13), which in turn provides pressurized water (7) to a plurality of exit nozzles (17), each exit nozzle having a precision orifice that atomizes the pressurized water into a mist, where the volume rate of the mist is dependent only on the motor speed and the diameter of the precision orifice.

Abstract: A user-programmable monitoring and dispensing system for controlling the dispensing of water vapor and various other media into an HVAC air stream in residential or commercial structures. The various media to be dispensed are preferably water-soluble, and mixed with the system water supply to be dispensed with the water vapor added to the HVAC air stream. These materials may be fragrances or aromas, intended to produce an aesthetic effect, or they can be agents capable of pesticidal, bacteriacidal, fungicidal or sporacidal effect for use as acute or prophylactic treatment for infestation. The dispensing system central processor is pre-programmed with a default concentration algorithm for each media to be dispensed. The concentration of media in aqueous solution is initially controlled by this default algorithm at each of several concentration levels, from lowest to highest.

Abstract: A humidifier apparatus for building humidification. The apparatus includes a water reservoir with a removable cover, at least one aperture through a side wall of the water reservoir, a removable heat exchanger insertable into the aperture, and a steam exit.

Abstract: An outdoor condensing furnace is provided with a condensate drain line which passes through the heat exchange compartment and to a location within the building where it can be discharged at temperatures above freezing. During heating operation, the drain line is maintained at temperatures above freezing such that the condensate will not freeze, and if condensate is trapped in the drain line and freezes during periods of nonheating operation, then it will be quickly thawed when heating operation is resumed. In an alternate embodiment, a drain pan is placed in direct contact with the primary heat exchanger and the condensate is routed to drain pan to be vaporized. Another embodiment provides for routing of the condensate from the condensing heat exchanger, through a flue pipe, and to a drain site which is at above freezing ambient conditions.

Abstract: The humidifier includes a cabinet having a rear wall, a front wall, a pair of side walls, a bottom wall and a sump defined in part by the walls at the bottom of the cabinet. The cabinet has in the interior thereof means providing communication with an air system. Retainer ears are provided on the outer surfaces of the side walls near the top thereof. An evaporator pad is mounted in the cabinet adjacent and parallel to the rear wall. A water distribution trough is disposed in the interior of the cabinet adjacent the rear wall and is located above the evaporator pad for providing a substantially uniformly distributed flow of water to the evaporator pad. A pair of mounting elements are provided on the inner surfaces of the side walls near the bottom thereof. A swingable cover is provided for opening and closing the cabinet and has a top end and a bottom end. The cover at the bottom end is provided with a pair of bearing portions which are engageable with and pivotally mounted on the mounting elements.

Abstract: A humidifier features a two piece reversible housing which is snap fit together for holding a water panel assembly and a water feed tube to supply water to a water distribution structure disposed on top of the water panel assembly. The water panel assembly is provided with an overflow arrangement for controlling any overflow of water in the water distribution structure.

Abstract: A user-programmable monitoring and dispensing system for controlling the dispensing of water vapor and various other media into an HVAC air stream in residential or commercial structures. The various media to be dispensed are preferably water-soluble, and mixed with the system water supply to be dispensed with the water vapor added to the HVAC air stream. These materials may be fragrances or aromas, intended to produce an aesthetic effect, or they can be agents capable of pesticidal, bacteriacidal, fungicidal or sporacidal effect for use as acute or prophylactic treatment for infestation.

Abstract: An indirect damp generator is arranged atop water to generate moisture. The indirect damp generator mainly comprises a floating carrier, a vapor generator arranged atop the floating carrier and a heatproof article with capillary function below the vapor generator and assembled to the vapor generator. The heatproof article is inserted into water to guide the water upward to the vapor generator. The vapor generator evaporates tiny droplet from water with high efficiency and does heat water on bottom of container thereof.

Abstract: A steam humidifier for use with a forced air heating system includes a steam nozzle mounted in the plenum of the heating system and connected to a water feed line connected to a continuous pressurized water source. The water feed line is made of a thermal conducting material and is coiled about a heating element wherein the heating element and conductive coil are substantially surrounded by an insulation barrier. The water feed line is controlled by a solenoid operated valve that will be activated only when the heater is on and a humidistat detects that humidity is required by the area being serviced by the forced hot air system.

Abstract: A humidifier for adjusting the humidity level in a building, the humidifier having a heat exchange tube adapted to be heated by a furnace as the furnace heats air to be circulated through the building; an evaporation tube, in fluid communication with the heat exchange tube, adapted to maintain fluid at a first level when the furnace is not heating air; and a purge line in fluid communication with the evaporation tube, the purge line being adapted to drain fluid from the humidifier when the furnace is heating air and the fluid is at a second level.

Abstract: A method and apparatus for protecting humidity sensing equipment within an enclosure that can be mounted in the return airflow of a furnace duct. The humidity sensing equipment is mounted on a printed wiring board, which is protected between a mounting base and an operational cover. The mounting base includes a protective shield which allows the humidity sensing equipment to protrude into the furnace duct and prevents damage to the humidity sensing equipment during installation.

Abstract: A method of controlling humidity within a space, where the space communicates with humidity control equipment. The method comprises determining a dew-point temperature within the space, and comparing the dew-point temperature to a predetermined desired dew-point temperature. The humidity control equipment is then controlled based upon the difference between the dew-point temperature and the predetermined desired dew-point temperature. The humidity control equipment can be a humidifier, and the dew-point temperature can be determined by sensing the temperature and humidity within the space, or by sensing the temperature and humidity within a duct, such as a return air duct.