Abstract: A method and apparatus for controlling the temperature of a flue gas stream entering a Selective Catalytic Reduction chamber in a steam generating power plant that utilizes Selective Catalytic Reduction (SCR) to lower NO.sub.x emissions is disclosed. The method involves the utilization of superheated steam to control the temperature of the flue gas prior to the flue gas entering the Selective Catalytic Reduction chamber such that there is a reduction in lost energy to the thermodynamic steam cycle caused by spray desuperheating.

Abstract: A rotary valve thermal oxidizer including an interfacial seal disposed between rotating and fixed valve portions to prevent the mixing of treated and untreated gas streams. In a preferred embodiment, the valve sealing device includes a flowable sealing material contained within a receptacle, and contacted by a partition nested within the receptacle. Other sealing devices, as well as purge and/or sealing gases, may be employed to prevent leakage, while avoiding the use of machined parts.

Abstract: A plant for the reduction of nitrogen oxide in furnace waste gases includes a furnace, a reactor serving for selective catalytic reduction, and a regenerative heat exchanger to be used for air preheaters as well as for gas preheaters for the treatment of pollutant-containing waste gases which are in a heat exchange with another medium. The regenerative heat exchanger has stationary or revolving storage masses which are composed at least partially of catalytic material. A reduction agent is supplied to the regenerative heat exchanger. The reactor is arranged concentrically above the regenerative heat exchanger. Preferably, the reactor is placed directly onto the housing of the heat exchanger.

Abstract: A method and apparatus for conditioning air through the removal of moisture from air to be conditioned comprising a first path for a first flow of air to be dehumidified, the first path having an input end and an output end with a first blower between the input end and the output end to effect the movement of air from the input end to the output end; a second path for a second flow of air, the second path being independent of the first path and adapted to remove moisture from the second flow of air, the second path being in a closed loop configuration with a second blower for continuously moving the second flow of air around the second path and with a plurality of temperature changing devices sequentially positioned in the second path including an air precooling device, a cooling condenser device for condensing moisture from the second flow of air, a reheating device coupled to the precooling device, and a heating device; and a desiccant wheel with a motor to rotate the wheel in a continuous path of travel th

Abstract: A method for a regenerative heat exchanger for the treatment of pollutant-containing waste gases which are in a heat exchange with another medium. The heat exchanger includes stationary or rotating storage masses which are at least partially of catalytic material and to which a reduction agent is supplied from the hot side thereof. A penetration of the reduction agent into the flue gas flow can be prevented by supplying the reduction agent directly to the catalyst separately from the pollutant-containing waste gases and without coming into contact with the remaining heating surfaces. For this purpose, a nozzle arrangement having at least one arm and extending over the entire radius of the heat exchanger may be arranged in both hood sides of the heat exchanger.

Abstract: A method of conditioning a process stream of air in an air conditioning system wherein a process stream of air is dehumidified and cooled to provide a conditioned stream of air for introducing to a conditioned space, the method comprises the steps of providing an enthalpy wheel comprised of an adsorbent contained in a paper web, the enthalpy wheel having a multiplicity of passages through which the process air can flow, the enthalpy wheel capable of regeneration by passing an air stream therethrough having a temperature and humidity lower than the process air. In the method, process air is passed through the enthalpy wheel to remove heat and moisture therefrom, and the enthalpy wheel is regenerated by passing air therethrough to remove heat and moisture therefrom.

Abstract: A compact, non-polluting, extremely energy-efficient, through-the-wall vented forced hot air heater, which humidifies and cleans said hot air without any additional equipment or water supply, comprises a rotating cylindrical heat and moisture transport/storage element which has many substantially identical axially parallel flow passages and very large transfer surface per mass, a means for controllably transferring the heat and the moisture from the combustion products to said rotating element and then to said hot air stream counter-currently, and a means for preventing formation of air pollutants.

Abstract: A dehumidifier works in conjunction with a vehicle air conditioner to reduce both condensation and cooling load on the evaporator. A unique desiccant wheel design incorporates end plates separated by desiccant tubes that allow a cooling cross flow to be sent through and between the wheel end plates, over the outside of, but sealed from the inside of, the tubes. As outside air passes through the inside half of the tubes and is dried, the released latent heat of vaporization is picked up by the cooling cross flow, which is pre heated. It continues on across the wheel, where it is turned around, heated farther by engine waste heat, and then sent through the inside of the other half of the tubes to regenerate the desiccant.

Abstract: Cooling apparatus comprises a cooling chamber such as a freezing tunnel having a pipeline for introducing liquid nitrogen into it and an exhaust passage for cold nitrogen vapor. The exhaust passage extends through a rotary regenerative heat exchanger. Downstream of the heat exchanger is a fan operable to draw the exhaust gas through the heat exchanger. A second passage extends through the heat exchanger and is arranged for the flow therethrough of relatively warm air, whereby, in operation, the air is able to transfer heat to the exhaust gas in the heat exchanger.

Abstract: An apparatus for catalytic reduction of a nitrogen oxide in a waste gas includes a regenerative heat exchanger containing a heat-storage material consisting at least partially of a catalytic material, inlet and outlet conduits for supplying the waste gases to the heat exchanger and for delivering purified waste gases from the apparatus, respectively, first and second hoods arranged in inlet and outlet conduits respectively, on opposite sides of the heat storage material, a conduit for conducting a gaseous medium through heat exchanger, the gaseous medium flowing, in heat exchanger, through first and second hoods, and a conduit for supplying a reducing agent into the heat exchange for assisting in the catalytic reduction of the nitrogen oxide in the waste gases by the heat-storage material.

Abstract: Ventilation device with a heat exchange element, preferably for arrangement in an outer wall (13) of premises which are to be ventilated with balanced volumes of ambient air (15). The ventilation device comprises a pair of air flow passages (23A,23B) each including two separate ventilation tubes (16,19) aligned in the direction of air flow, with generally identical heat exchange elements (18,22) at the ends thereof. A fan (24A,24B) is located centrally between the two heat exchange elements in each passage.

Abstract: A modular recuperator apparatus and method that is used to pre-condition air treatment in a HVAC and air processing systems. A modular recuperating system enhances the overall efficiency of modern HVAC systems by reducing the required relative treatment of air within the system by supplying pre-conditioned fresh air into the system.

Abstract: A regenerative device can thermally treat gases. This device has a housing with a gas inlet and a gas outlet. A cage having a central interior is rotatably mounted in the housing between the inlet and the outlet. A plurality of gas permeable blocks are mounted peripherally in the cage around its central interior to provide therethrough: (a) an incoming flow path from the inlet to the central interior, and (b) an outgoing flow path from the central interior to the gas outlet. This incoming flow path within the blocks is non-converging. A drive motor can rotate the cage to move blocks successively past the inlet and the outlet.

Abstract: A heat exchange module comprises a rotating-wheel type regenerative heat exchanger unit having a plurality of heat exchange elements mounted in baskets through the volume of the heat exchanger wheel. The heat exchanger wheel rotates about its axis so that the heat exchange elements are heated by a hot gas flow over a portion of the rotation, and transfer the heat to an air flow over another portion of the rotation. At least some of the heat exchange elements include phase change materials, such as salts, that absorb heat while maintaining a constant temperature. The phase change materials narrow the range of temperatures reached by the heat exchange elements located at various positions of the heat exchanger wheel. The phase change materials prevent excessively low temperatures that can result in condensation of corrosive acids on the surfaces of the heat exchange elements.

Abstract: A pack of heat transfer plates for regenerative heat exchangers is operationally adapted to absorb heat from a flue gas flowing in one axial direction along the main flow axis and release such heat to a combustion air flowing in another axial direction. The pack includes first and second mutually identical profiled plates which are arranged in mutually contiguous, contacting relationship with double ridges of the first plate intersecting double ridges of the second plate. The double ridges of the first and second plates extending symmetrically and obliquely in mutually opposite directions relative to the main flow axis of the heat exchange media flowing through the pack. The pack includes a third plate having provided thereon continuous extending parallel channel formers. One side of the third plate is in contiguous relationship with the second plate.

Abstract: The present invention is directed to an improved regenerative thermal oxidizer and a method of purifying gases by raising gases to their auto ignition temperature and by exchanging heat by inleting and outleting gases. The reactor has at least three regenerative thermal chamber units and these units have on a single surface at least three openings, a purge opening, an inlet opening and an outlet opening, which are connected to recycled outlet gases for purging, and to inlet and outlet gases respectively. Set against the purge, inlet and outlet openings is a slidable gate which has a single opening which moves through cycles so that its single opening coincides with the inlet opening of its chamber unit, or coincides with one or more spaces which are closed between the inlet and outlet opening, or with the purge opening, or coincide with the outlet opening. In other words, the gate cycles between inleting gases, no gas movement, purge position, no gas movement and outleting gases.

Abstract: A heat recovery ventilator having a rotary wheel heat exchanger includes a unique configuration for driving both the rotary wheel heat exchanger and impellers to provide an inexpensive, compact and light-weight ventilator unit adaptable for use across a wide range of residential, commercial and industrial applications. A random matrix media is also used to provide high thermal efficiency in exchanging heat and moisture between inlet and exhaust air streams.

Abstract: A regenerative preheater includes a heat accumulator and a catalyst through which a raw gas containing a harmful component can flow and through which a clean gas can flow in alternation. A first admission point for a gaseous reagent is disposed upstream of the catalyst in a flow path of the raw gas. A second admission point for the gaseous reagent is disposed upstream of the catalyst in a flow path of the clean gas. A method for operating a regenerative preheater includes passing a raw gas containing a harmful component and passing a clean gas through a heat accumulator and a catalyst in alternation. A a reagent for a catalytic reaction is introduced into both a flow path of the raw gas and a flow path of the clean gas.

Abstract: An apparatus for reducing NOx pollution in the flue gas produced by a burner includes a heat exchanger wherein at least some of the heat transfer elements are coated with a catalyst. A plurality of reactive gas injectors are arranged to introduce a nitrogeneous compound, preferably a source of ammonia, across a hot-end face of the heat exchanger. A reactive gas flow distribution system permits the distribution of the nitrogeneous compound flowing through at least some of the gas injectors to be varied responsive to the temperature profile of the heat exchanger. Preferably, the apparatus also determines the total NOx flow in the flue gas, and the reactive gas flow distribution system permits the total amount of reactive gas flowing through at least some of the gas injectors to be varied responsive to the total NOx flow in the flue gas.

Abstract: The NOx content in a flow of flue gas is reduced by passing the flue gas through a first treatment zone and a second treatment zone. A nitrogeneous treatment agent is introduced into the first treatment zone for the selective non-catalytic reduction of part of the NOx, and the flue gas is thereafter passed through the second treatment zone which includes a catalyst for further selective catalytic reduction of the NOx. Optionally, a second nitrogeneous treatment agent is added to the flue gas in the second treatment zone. The quantity of NOx in the flue gas is detected intermediate the first and second treatment zones and, optionally, after the flue gas has left the second treatment zone. The quantity of ammonia in the flue gas exiting from the second treatment zone is also detected. The amounts of the treatment agents added to the flue gas are controlled responsive to the variations and absolute levels determined by these measurements.

Abstract: A control system for regulating the temperature of a heat detector disposed on a heat exchanger. The control system includes a temperature detector (42) for determining the temperature of the hot spot sensor (32), non-liquid cooling means (50,52) for cooling the detector when its temperature is above the desired temperature range, and non-liquid heating means (48,53) for heating the detector when its temperature is below the temperatures range. The control system includes control means (82) coupling the temperature sensing means to the non-liquid heating and cooling means. By keeping the heat detector at a generally constant temperature, the accuracy of the hot spot sensor on the heat exchanger is improved.

Abstract: The present invention is a regenerative gas incineration apparatus having three heat regenerators containing refractory heat exchange material. Gas is cycled through the regenerators first in one direction, then in another. The regenerators are each connected to combustion chamber having an air-fuel system and at least one burner. A system of valved ductwork is utilized to direct gas to be processed into and upwardly through a heating first regenerator into the combustion chamber, downwardly through a cooling second regenerator and exhausting the processed gas to the atmosphere. The temporarily idle third regenerator is purged of partially treated gas remaining from a previous cycle and this gas is directed to the combustion chamber. The flow of the gas through the system is periodically changed enabling the heat recovered by cooling regenerator in the previous cycle to be used to heat incoming gas in the next.

Abstract: A hot spot detection system (78) at one location that is fixed with respect to the rotor (12), and a temperature suppression system (62) at another location that is fixed with respect to the rotor. The suppression system is automatically energized by the hot spot detection system when a threshold temperature is detected. Preferably, the suppression system includes one or more pipes (66) that span the radial dimension of the heating element compartments in the rotor. The detection system can be in the conventional location, on the trailing edge (40) of the air inlet duct (32) of the air preheater. The suppression piping (66) is preferably located in the hot end, or air discharge duct (34), of the air preheater. Depending on the location of the suppression piping with respect to rotor rotation, a timing device (100) is preferably employed to start and stop the flow of suppression water into the rotor, just prior to and after the hot spot passes under the piping.

Abstract: A heat recouperator having a single rotary heat and moisture wheel exchanger uses a random matrix media comprising a plurality of small diameter heat-retentive fibrous material, which provides high thermal efficiency in exchanging heat and moisture between inlet and exhaust air streams.

Abstract: A method and apparatus for improving the efficiency of the thermal section of a large scale power plant heat generator in which combustible fuels such as fossil fuels, refuse or other materials are burned are described. Flue gas generated in the heat generators and combustion air are passed in heat exchanger relationship at diametrically opposite sides of a rotary type air preheater. The heat exchanger relationship is selected so that it causes removal of a substantial amount of heat from the flue gas whose temperature is consequently lowered to a level where a corrosive pollutant such as SO.sub.3 in the form H.sub.2 SO.sub.4 condenses out. During operation the rotor is rotated at a slow speed while a strong localized stream of wash liquid is applied onto a portion of the rotor in the air preheater along a zone selected to enable a drain down of wash liquid before the wetted portion reenters the air flow side.

Abstract: The present invention is a regenerative gas incineration apparatus having three heat regenerators containing refractory heat exchange material. Gas is cycled through the regenerators first in one direction, then in another. The regenerators are each connected to combustion chamber having an air-fuel system and at least one burner. A system of valved ductwork is utilized to direct gas to be processed into and upwardly through a heating first regenerator into the combustion chamber, downwardly through a cooling second regenerator and exhausting the processed gas to the atmosphere. The temporarily idle third regenerator is purged of partially treated gas remaining from a previous cycle and this gas is directed to the combustion chamber. The flow of the gas through the system is periodically changed enable the heat recovered by cooling regenerator in the previous cycle to be used to heat incoming gas in the next.

Abstract: A regenerative incinerator comprises a combustion chamber, a regenerator having a plurality of discrete segments each of which has a heat exchange material therein and a valve for sequentially directing contaminated gas, purge air and cleansed gas to and from discrete segments of said regenerator, selectively.

Abstract: Substantially all available heat from a combustion gas stream is extracted by passing it through a cool, porous heat sink, which is thereby heated, and then releasing that heat into a cool air stream blown through the same porous heat sink in a second step (preferably in the opposite flow direction). The heat sink absorbs substantially all the available heat of combustion rather than merely scavenging what would otherwise be stack losses. The invention provides an improved means of recovering virtually all the available heat produced by combustion of a fuel gas. It permits recovery of the heat lost in a conventional single-zone furnace. The improved heat recovery is achieved without contamination of the ambient air with exhaust gas residues as occurs in direct-fired systems, and without incurring the problems of corrosion and waste disposal inherent in two-zone indirectly-fired systems.

Abstract: A compact apparatus for ultra high energy efficient heating, cooling and dehymidifying of air for use in heating, cooling and heat recovery ventilation of buildings comprises two matrix containers and a fuel combustor for generating useful heat, with the two matrix containers housing stationary matrices of solid materials providing alternately high energy efficient: (a) transfer of energy from combustion products and exhausted air to incoming make up air, (b) indirect evaporative cooling, (c) indirect-direct evaporative cooling (d) dehumidification-indirect evaporative cooling, (e) dehumidification-indirect-direct evaporative cooling.A continuous alternate and conuntercurrent flow of two air streams through the two matrix containers and a continuous flow of the air through the apparatus is maintained by alternately operating air fans controlled by solid state processor.

Abstract: A compact apparatus for dehumidification and cooling of air for use in air conditioning of buildings comprises a container with stationary matrices, air fans, water pumps and a solid state processor, with the stationary matrices providing a periodic flow type energy efficient transfer of heat, dehumidification and evaporative cooling of air. Dehumidification of air and reactivation of the spent desiccant is achieved by the energy of the outdoor air and results in a cooling energy efficiency ratio of the apparatus (EER) 10 to 20 times larger than that of the most energy efficient vapor compression systems. Only a small amount of electric power is used to operate air fans providing alternate, periodic and countercurrent flow of the primary and the secondary air streams through the apparatus, and to operate water pumps used in evaporative cooling of the air. Operation of the apparatus is automatic and is controlled by a solid state processor.

Abstract: A regenerative gas-to-gas heat exchanger having a plurality of superposed spaced, parallel beds of confined metal flakes adapted for gas flow therethrough; four gas plenums surrounding the beds, each plenum communicating with one side only of all the beds; means for supplying a relatively hot gas to one plenum, means for supplying a relatively cold gas to an opposite plenum, each of the remaining plenums communicating with a separate outlet; and sliding gate valve means in each plenum adjacent one side of the beds, means for moving the gate valve means to a first position and to a second position for controlling the directions of gas flow and alternately extracting and releasing heat therefrom.

Abstract: An apparatus for ventilation, recovery of heat, dehumidification and cooling of air or industrial gases for use in industrial processes and in air conditioning of residential, commercial and industrial building comprises a highly effective valveless periodic flow type dehumidifier-heat exchanger in which a countercurrent flow of two gaseous streams through a stationary matrix of a desiccant and a solid heat exchanging material is achieved by an air fan controlled by a variable timer controller. The stationary matrix may include a single bed or two beds of solid materials with distinguished mositure and heat sorption properties, a heater and a wet filter to provide simultaneously an effective transfer of heat and moisture, removal of particulates and adiabatic cooling of the two gaseous streams.The released sorption heat is temporarily stored within the matrix material and then used in reactivation of the desiccant.

Abstract: An air circulating apparatus includes a housing which is separated into a front room and a rear room. A heat exchanging wheel is rotatably disposed in one side of the housing between the front room and the rear room. An induced draft fan and an exhaust fan are disposed in another side of the housing and respectively located within the front room and the rear room. Indoor air is drawn through a lower portion of the heat exchanging wheel by the exhaust fan, and flows out of a building. Outdoor air is drawn through an upper portion of the heat exchanging wheel by the induced draft fan and flows into the building.

Abstract: A combustion air heating system includes both an air heater for preheating the combustion air by heat exchange with flue gases and an air preheater for preheating the combustion air prior to entry into the air heater. The air preheater operates by heat exchange between the combustion air discharge from the air heater and a bypass stream of combustion air located upstream of the air preheater. The amount of combustion air flowing through the bypass duct is controlled so that the temperature in the air heater does not fall below the dew point of the acid gases present in the flue gas.

Abstract: A heat recovery unit for use to preheat fresh air with hot air produced in an industrial process, such as the hot air exhaust from a dryer of a pulp and paper mill. The recovery unit makes use of water circulating from one air/water heat exchanger tank to another air/water heat exchanger tank as heat transfer medium. Hot air whose heat is to be recovered at least in part, flows past a set of revolving discs of metal partially immersed in the water flowing in one of the heat exchanger tanks. The portions of the discs which are exposed to the hot air above the water level transfer the heat they recover to the flowing water. The water which is so heated passes into the other heat exchanger tank where it raises the temperature of an identical set of revolving discs which in turn heats a fresh air intake to provide warm air. The main advantage of this recovery unit is that the heat recovery conditions can be easily adjusted to fit any seasonal fresh air change.

Abstract: A heat exchanger has two regenerative beds and two valves connected to the beds for controlling the flow through them. Each valve has two ports connected to the beds and two other ports. The valves are mechanically linked and actuated together. The valves serve to alternate two gas flows between the two beds, to effect heat and moisture transfer between the gas flows. Each valve has two valve members mounted on a common valve shaft controlling the connections between its ports.

Abstract: A gas fired boiler for a domestic hot water and/or central heating system has a burner (25) (FIG. 1), a static heat exchanger (22) through which water is circulated, and a rotary heat exchanger (12) of which the body is a disc of ceramic material such as is currently used for catalytic conversion in automobile exhaust systems. The rotary heat exchanger recovers heat from the gases passing from the static heat exchanger (22) to the outlet flue 4, and uses this recovered heat for heating the fresh air entering through the air intake (3). A conduit (90) having a controllable valve (91) enables heated fresh air to be supplied for space heating purposes if required, while improving the thermal efficiency of the boiler by promoting condensation of water vapor from the combustion gases as they pass through the rotary heat exchanger.

Abstract: A method and apparatus for improving the efficiency of the thermal section of a large scale power plant heat generator in which combustible fuels such as fossil fuels, refuse or other materials are burned are described. Flue gas generated in the heat generator and combustion air are passed in heat exchange relationship at diametrally opposite sides of a rotary type air preheater. The heat exchange relationship is selected so that it causes removal of a substantial amount of heat from the flue gas whose temperature is consequently lowered to a level where a corrosive pollutant such as SO.sub.3 in the form H.sub.2 SO.sub.4 condenses out. The heat exchange elements of the rotor are sized so that the cross-sectional area of the passages therebetween are small enough to prevent the formation of aerosols of sulfuric acid.

Abstract: An apparatus in the form of an air preheater for preheating air for combustion for a combustion process by acting upon the air with hot, NO.sub.x -containing flue gases from the same or an independent combustion process. At the same time, the NO.sub.x contained in the flue gases is reduced. A regenerative or recuperative type air preheater is used, with thoses surfaces of the heat exchange elements which are exposed to the flue gas being provided with a coating which acts as a catalyst for the NO.sub.x reduction. The heat exchange elements are coated only in a region which as a flue gas temperature greater than the condensation temperature of the reaction products of the materials contained in the flue gas and of the added reducing agent.

Abstract: Exhaust gases are constrained to pass through a chamber with walls of heat retaining material. Air to be preheated is passed through pipes within the chamber the pipes transferring heat from the exhaust gases to the air or from the walls to the air when the walls have been preheated to a high temperature.

Abstract: A heater is adapted to provide heat for heating a room by effecting heat exchange in a heat section which is between combustion and ventilation sections. The heat exchange section comprises a rotary body positioned across the combustion and ventilation sections so as to rotate at that position. The rotary body has air flow passages extending in the same direction as the axis of rotation of the rotary body. The heater can effect heat exchange with an increased efficiency and also can prevent the interior of the room from being abnormally dried.

Abstract: A rotary heat regenerator assembly comprising an enclosure, a regenerator matrix disposed in the enclosure and releasably mounted on a matrix support secured to a rotatable shaft, a first air passage and associated blower for forcing air through a portion of the regenerator wheel, and a second air passage and associated blower for forcing air to flow through another portion of the regenerator wheel. The matrix and matrix support are designed so that rotational drive is transmitted from the rotatable shaft to the matrix via the matrix support and so that the matrix can be easily and quickly inserted on and removed from the matrix support. A blower driving motor and the blowers are mounted on a common shaft. Speed reducing driving means connects the common shaft to the rotatable shaft carrying the matrix.

Abstract: A ventilation plant for recovering heat from the outlet air and preheating the inlet air consists of a valve housing (10) including two fans (15, 16) for controlling the flow of air in two duct pipes (17, 18) connected to the surrounding atmosphere. An accumulator tube (17A, 18A), coupled into these two pipes, comprises a number of loosely inserted rolls (21) of pleated metal foil to achieve a great number of axial ducts communicating (24, 25) with one another at the roll ends. In one position the valve (26) leads the inlet air through one of the duct pipes and out through an outlet (13) in the valve housing at the same time as the outlet air is led into the other duct pipe and out to the surrounding atmosphere, or vice versa.

Abstract: A compact and maintenance-free means and method of regenerating the sensible heat from flue gases of fossil fuel furnaces by heat exchange through two circular layers of rock beds rotating under two semi-circular mantles with the first mantle applying hot flue gases to the beds and the second withdrawing preheated ambient air needed for combustion by said furnaces. When used for power plant flue gas treatment, layers of acid-resistant pipes containing boiler feedwater are sandwiched between the two rock bed layers to usefully recover the heat units arising from moisture condensation. The enormous water of condensation collects flyash and sulphur dioxide thus removing these pollutants from the stack gases. The heavy rock beds rotate slowly beneath the fixed mantles in a circular, pan-shaped, steel vessel floating on and cooled by a circular pond of water. Friction of rotation is minimal and gas leakage principally prevented by liquid seals.

Abstract: A system for automatically controlling the buoyancy of a lighter-than-air craft by condensing water ballast from engine exhaust gases.

Abstract: This invention relates to a regenerating, hazardous waste gas fume and odor incinerator. The incinerator comprises a combustion chamber (12) and at least three heat exchanger regenerator beds (26, 28, 30) through which the waste gases pass selectively for preheating on their way to the combustion chamber and the processed, heated gases are passed through for cooling before exhausted. All three regenerator beds are cycled from a cooling position in which they absorb heat from the previously processed gases to a second position where they preheat waste gases en route to the combustion chamber to an inactive position where they do not receive gases either from the waste supply or from the combustion chamber. The waste gases, after being preheated, are directed to the combustion chamber through a plenum chamber (14) in which is located a combustion burner (16). The preheated waste gases are directed through the flame of the burner into the combustion chamber for ignition and for combustion therein.

Abstract: A heat storage composition excellent in heat storing effect contains calcium chloride hexahydrate as the main component and an appropriate amount of a nucleating agent combination for inhibiting supercooling which is composed of barium sulfide, barium chloride dihydrate and strontium chloride hexahydrate or of barium chloride dihydrate and strontium chloride hexahydrate and optionally contains an appropriate amount of a thickening agent combination composed of an ultrafine silica powder and glycerin. Latent heat storage capsules contain the above heat storage composition and are improved particularly in their structure such that improved heat storage and release effects can be produced. A temperature control apparatus can make most of the heat storage capsules in the temperature control of a hothouse or the like.

Abstract: A heat exchanger for reclaiming energy from an exhaust airstream. The exchanger includes a porous metal element suitable for absorbing heat from the exhaust airstream, means for reciprocally moving the porous element back and forth transversely to the exhaust airstream, an inlet duct for receiving the exhaust airstream and directing it through the porous element to an outlet duct, and reclaiming air blower means for delivering two heat-reclaiming airstreams through the porous metal element, one on either side of the exhaust airstream, and an air exhaust fan in the path of said exhaust airstream for drawing said airstream through said porous element.

Abstract: A ventilator of the heat exchange type includes an air passageway communicating between an interior of a room to be ventilated and the outdoors, a first centrifugal fan for introducing outdoor air to the interior of the room, a second centrifugal fan for discharging indoor air outdoors, both centrifugal fans being disposed within the air passageway so that outlet areas communicates to each other, and two electric motors for alternately driving the centrifugal fans respectively. At least any one of the centrifugal fans is formed of a heat-accumulative material so that heat contained in the indoor air is accumulated in the centrifugal fan formed of the heat-accumulative material and that the heat accumulated in the centrifugal fan is dissipated to the suction air. Heat exchange is thus performed by accumulating the heat in one of the centrifugal fans during indoor air discharge operation and by dissipating the heat to the outdoor air during outdoor air suction operation.

Abstract: A combustor for use in an external combustion engine having a rotary-type regenerator heat exchanger includes a housing having a combustion chamber, an air chamber, a plurality of first outlet ports, and a first inlet port. A main partition defining the combustion chamber and the air chamber in the housing has a plurality of second outlet ports defined in a peripheral portion thereof and a second inlet port defined in a central portion thereof. An annular regenerator is rotatably supported in the housing, dividing the air chamber into first and second chambers, the regenerator having first and second axially opposite end surfaces and a multiplicity of axial through-holes extending therebetween. First subpartitions define first outlet passages communicating between the first outlet ports, respectively, and the first end surface of the regenerator, and divide the first chamber into air and exhaust sections.