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. When flue gas temperature rises, as above 600 degrees F.

Abstract: A rotary heat exchanger for heat exchange between at least two gaseous media comprises an annular heat transfer member rotating in a housing. A stationary partitioning wall is provided within the heat transfer member, thereby defining therein first and second semicircular chambers communicating with inlet openings in the housing. Outlet diffuser chambers are provided outside the heat transfer member and increase in width towards their outlet ends for the discharge from the apparatus. The partitioning wall is provided with a screening wall portion at at least one edge adjoining the inside surface of heat transfer member. The partitioning wall may be of a heat-insulating construction, while the heat exchanger may be combined with a fan assembly disposed in parallel relationship with the heat exchanger so the arrangement can be operated in a heat exchange mode or a pure fan blowing mode, being controllable by flow control flaps.

Abstract: A ventilator unit (1) intended for installation in the outside wall of a room such that used air (A) from the room is vented to the outside atmosphere through the outside wall while fresh air (B) is introduced from the outside and supplied to the unit (1) where it is suitably air conditioned, before being blown into the room, the unit comprising an exhaust fan (12) and an inlet fan (13), and also including for purposes of heat recovery a heat exchanger (15', 15") for transferring heat from the outflowing air (A) to the inflowing fresh air (B), wherein the two streams of air (A, B), as known per se, alternate periodically through two equal regenerator masses.

Abstract: A simple method to prevent air pollution from the particulate and gaseous pollutants from power plants, by recuperating the heat in the flue gases down to atmospheric temperature and pre-heat the air needed from combustion in the boilers. Most fly ash is removed at the face of the regenerators. Condensed moisture from the flue gases dissolves SO.sub.2 and forms a smog, with remaining fly ash particles acting as condensation nuclei, which are caught on the wetted surfaces within the regenerator, washed therefrom to vessels to settle out solids, and the liquid is then treated by vacuum to recover the dissolved SO.sub.2, which is compressed to liquid SO.sub.2 and stored in refrigerated tank cars, to be sold as a valuable byproduct. The bulk of the fly ash, which settles on the face of (45 degree) sloping "snow fences" built across the top of the pebble bed, slides like snow off of a sloping roof and into gutters with perforated false bottoms, up which flows a little gas and carry it to downspouts and bins.

Abstract: A sealing arrangement for an air preheater for a fuel burning device includes both radial and circumferential seals. The radial seals include a set of flexible, foil-like metal sealing strips coupled to semi-rigid radial seal plates. The semi-rigid radial seal plates, in turn, are coupled to diaphragm members which divide a generally cylindrical drum of the air preheater into sectors, each sector containing a set of heat exchanger elements, such as parallel plates or fins. To effect sealing, the foil-like metal radial sealing strips will engage and wipe across sector plates on a housing surrounding the drum. The radial sealing strips are completely unobstructed from cantilevered yielding movement in a trailing direction to the full extent that the flexure characteristics of the radial sealing strips themselves permit. The circumferential sealing strips are also constructed of a flexible, thin, foil-like metal material.

Abstract: A method of temporarily storing a producer unit effluent, during the transmission of the effluent from the producer unit to a user unit at a predetermined user unit flow rate, in which excess producer unit effluent is passed to a storage unit through a single bidirectional flow line and make-up producer unit effluent is passed from the storage unit through the bidirectional flow line to the user unit. The feed rate to the user unit is controlled to maintain a predetermined feed rate and producer unit effluent, from the producer unit to the storage unit and from the storage unit to the user unit through the bidirectional flow line, is controlled by measuring the back pressure built up in the bidirectional flow line or the flow line from the producer unit to the user unit and permitting flow from the bidirectional flow line to the storage unit and from the storage unit to the bidirectional flow line, as the case may be, in accordance with the measured pressure.

Abstract: Heat exchanging or accumulator structure for thermal transfer between gas streams in regenerative heat exchangers, especially for the transfer of heat between the boiler exhaust gases cleaned in a scrubber and the foul boiler exhaust gases being fed to the scrubber, composed of molded elements (2; 4a; 4b; 4c) of thermoplastic material selected from the group consisting of polyphenylene oxide, a copolymer of polyphenylene oxide, polystyrene, and polyblends of polyphenylene oxide and polystyrene.

Abstract: A multimode ventilator mounted on a window unit dividing interior and exterior sides from each other has a frame assembly including a central partition on which a heat exchanger is rotatably supported. The frame assembly has first and second inner chambers divided from each other and first and second outer chambers divided from each other. Discharge and supply fans are disposed respectively in the first outer chamber and the second inner chamber. The frame assembly has a first opening for communication between the first inner chamber and the interior, a second opening for communication between the first outer chamber and the exterior, a third opening for communication between the second outer chamber and the exterior, and a fourth opening for communication between the second inner chamber and the interior.

Abstract: A bay window includes a frame assembly composed of an inner head, an inner transom, an inner sill, an outer head, an outer transom, an outer sill, a middle horizontal panel interconnecting the inner and outer transoms, and a lower horizontal panel interconnecting the inner and outer sills. A window unit is disposed between the outer head and the outer transom, and a housing or bay window cupboard is disposed between the middle and lower horizontal panels. A ventilator is accommodated in the housing and has an air inlet port communicating with air inlets defined in the inner sill and opening into a house interior space, and an air outlet port communicating with air outlets defined in the inner transom and opening into the house interior space.

Abstract: A ventilation system comprising a heat-exchanger rotor mounted in a four-chamber housing supported on a panel or window unit, and a preliminary heat-exchange unit mounted at an air-intake portion of the housing. The window unit has a frame composed of a plurality of hollow structural sections defining a heat-medium passageway for circulation of heat medium such as hot water or cold water therethrough. The preliminary heat-exchanger unit has a radiation/endothermy tube connected to the heat-medium passageway for fluid communication therewith. The radiation/endothermy tube serves to prewarm or precool air (introduced from the exterior) before the latter passes through the heat-exchanger rotor.

Abstract: Method and apparatus for reheating of cleaned gases subsequent to wet cleaning of raw gases.Cooled cleaned gases of high humidity which have been subjected to a wet cleaning process are reheated by means of regenerative heat exchange with as yet uncleaned, hotter raw gases, a previously already heated partial flow of cleaned gas being added to the cleaned gas flow prior to the performance of the regenerative heat exchanger. The partial flow of cleaned gas is diverted from the previously wet-cleaned total flow of cleaned gas, prior to the regenerative reheating of the cleaned gases by means of heat energy withdrawn from the raw gases, is increased in pressure, and is heated, separately from the main flow of the cleaned gases, in a regenerative heat exchange with the raw gases.

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 those 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 has 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: A simple and profitable means to prevent air pollution from the particulate and gaseous pollutants from power plants, by recuperating the heat in the flue gases down to atmospheric temperature and pre-heat the air needed from combustion in the boilers. Most fly ash is removed at the face of the regenerators. Condensed moisture from the flue gases dissolves SO.sub.2 and forms a smog, with remaining fly ash particles acting as condensation nuclei, which are caught on the wetted surfaces within the regenerator, washed therefrom to vessels to settle out solids, and the liquid is then treated by vacuum to recover the dissolved SO.sub.2, which is compressed to liquid SO.sub.2 and stored in refrigerated tank cars, to be sold as a valuable byproduct.

Abstract: In the recovery of waste heat from flue gas containing particulate solids, CO.sub.2, SO.sub.2, SO.sub.3 and H.sub.2 O, several improvements are provided, e.g., passing hot flue gas, e.g., from a power plant, over heat exchange surface attackable by sulfuric acid, e.g., in a combustion air preheater, so as to release heat to said heat exchange surface and to partially cool said flue gas to a temperature within the range of about 350.degree. F.

Abstract: A ventilation system comprises a window unit with a rectangular window frame having a hollow interior constituting a flow passage for air, and a ventilator held in fluid communication with the hollow interior of the window frame. The ventilator has a built-in heat exchanging element which effects a heat exchange between fresh air and foul air during operation. The window frame has an integral pipeline disposed in the hollow interior of the window frame at the interior side of the window unit for the passage therethrough of a heat-transferring medium. The heat-transferring medium flowing through the pipeline gives up heat to, or extracts heat from the air channeled through the flow passage in the window frame prior to or after the air's being introduced into the ventilator. Thus, the efficiency of heat exchange is considerably increased.

Abstract: A casing of a blower of the improved construction easy to assemble and low in noise level, and a ventilating fan utilizing such casing. The casing of the blower includes a frame, and spiral cases arranged in the frame and having suitable elasticity with respect to the frame, the spiral cases having external dimensions slightly larger than the internal dimensions of the frame in natural condition, so that the spiral cases can be securedly held in place in the frame by the elasticity of the spiral cases themselves.

Abstract: A rotary-type heat exchanger comprises a rotor having gas passages in the direction of its shaft, a casing for said rotor, an entrance of said casing to guide the high temperature incoming gas to be used for the heat exchange exclusively toward said rotor except for the gas passages outer periphery thereof and the areas close to the shaft of said rotor, a heat insulation being treated on the inner wall of said entrance, a sealing member for high temperature being provided on the entrance toward said rotor to keep the gas leakage minimum, an exhaust gas outlet of said casing being provided on the side opposing to said entrance to guide all the exhaust gas passed through said rotor to outside, a sealing member being provided on the exhaust gas outlet toward said rotor of said exhaust gas outlet to keep the gas leakage minimum, an outer fresh gas inlet of said casing to guide outer fresh gas into said casing, for heat exchange and cooling an outlet port of said casing being provided on the side opposing to said

Abstract: An energy recovery ventilator adapted to be mounted on a roof and adapted to be connected to the outlet of an exhaust air duct of a building ventilation system and the inlet of an air supply duct of a building ventilation system. The energy recovery ventilator includes a housing having an exhaust air chamber and a supply air chamber separated by a divider wall. A circular heat transfer wheel is position in the housing, a portion of the wheel being housed in the exhaust air chamber and a second portion of the wheel being housed in the supply air chamber, and the heat transfer wheel is caused to rotate about a central axis. An exhaust fan is housed in the exhaust air chamber and causes exhaust air to be pulled through the exhaust air duct and the heat transfer wheel and to be exhausted from the housing.

Abstract: Heat recovery and replacement air preheating apparatus for use in industrial heat treating processes is disclosed as including at least a pair of thermal recovery and storage units, B, C wherein each storage unit contains a plurality of heat exchange elements 32, 33 which operate as heat sponges to pick up heat from exhausts as it leaves the dryer and subsequently to put that heat into entering replacement air whereby the cost in elevating the replacement air is greatly reduced. A control valve D, 62 connected between the two thermal storage units cycles the reverse exhaust and replacement air flows alternately through the thermal storage units in a manner that a substantial amount of exhaust heat is stored and transferred to the replacement air flow.

Abstract: The apparatus includes a housing that is divided into two parallel passages. A fan in one passage causes air from the outside of a building to flow through one of the passages into the building and a fan in the other passage causes air to be exhausted from inside the building to the outside. A flapper valve prevents entrance of air into the building through either passage when the fans are not operating. A series of media disks, two embodiments of which are disclosed, constitute successive stages, picking up heat and/or moisture from one passage and transferring the heat and/or moisture to the other passage as the disks are rotated within recesses formed in stationary separators. A special drive mechanism is utilized for rotating the disks. Provision is also made for spraying the disks in order to clean them and/or to control the humidity within the building.

Abstract: A means for recovering the heat of a room space and for ventilation, consisting of at least two heat accumulators, to which the outgoing air delivers its heat and from which the incoming air takes up heat, and each of which has one end connected to the room space outflow duct and inflow duct, in which ducts the direction of flow is always the same under control by a flap. The opposite ends of the heat accumulators have been connected to the fresh air intake duct and to the outgoing exit duct, in which ducts the direction of flow is always the same under control by another flap.

Abstract: A regenerator with a hollow cylindrical heat exchange roller which is provided with a jacket of heat carrier material with separated flow regions that are passed through by a flow medium emitting heat and a flow medium receiving heat. The hollow cylindrical roller has a partition wall which separates the flow regions. The flow media pass through the regions by substantially radial passages through the jacket and transverse to the axis of rotation of the heat exchange roller. A housing which holds the roller is provided with radial inlet and outlet channels for the flow media. These channels are displaced from one another by substantially 90.degree..

Abstract: A pair of parallel flow rotary regenerative air heaters (16, 18) which extract heat from the combustion gases exhausted from a furnace (10). The gases, after giving up heat in the air heaters, flow to an electrostatic precipitator (30). In order to eliminate any temperature unbalance across the width of the main duct (28) leading to the precipitator, the duct (24) from the first air heater is connected to the main duct in such a manner that the hottest portion of the gases (H-1) are introduced along one side, and the relatively cooler portion (C-1) of the gases are introduced along the other side. The duct (26) from the second air heater is connected to the main duct in such a manner that the relatively cooler portion of the gases (C-2) are introduced along said one side, and the hottest portion of the gases (H-2) are introduced along said other side, thereby eliminating temperature unbalances across the width of the main duct.

Abstract: A process for condensing exhaust vapor comprises alternating modes of operation. In the first mode, the exhaust vapor contacts solid particles at a first temperature below the condensation temperature of the vapor and, simultaneously, solid particles at a second temperature above the first temperature are cooled to the first temperature. In the second mode, the exhaust vapor contacts the solid particles that were cooled in the first mode and, simultaneously, solid particles that were heated in the first mode are cooled to the first temperature. This cycle repeats continuously.

Abstract: A regenerative air preheater has a heat-exchange sector plate centered on an axis and formed with a multiplicity of axially throughgoing passages with intake and output heating-gas hoods axially flanking the plate and conduits for passing a heating gas from the intake hood through the plate to the output hood for heating the plate. Intake and output secondary heated-gas hoods each within one of the heating-gas hoods and axially flanking the plate are axially aligned with each other and only cover a portion of the plate. Thus the heating gas can pass through the plate only around the plate portion covered by the secondary hoods. Intake and output primary heated-gas hoods within the respective secondary hoods and axially flanking the plate are axially aligned with each other and only cover a subportion of the plate portion covered by the secondary hoods. Thus the secondary gas will be heated at regions of the plate portion not covered by the primary hoods.

Abstract: To prevent disruptions in downstream processes due to non-uniform flows arising from the switching operation in two interchangeable regenerator systems, both the feed of a cold fluid to the cooled regenerator and the feed of a hot fluid to the heated regenerator are interrupted, the hot fluid is then introduced into the cooled regenerator while the cold fluid is first conducted through a heat accumulator connected in parallel with the regenerators; a portion of the fluid heated in the heat accumulator is fed into the heated regenerator to purge residual hot fluid therefrom and subsequently the cold fluid is passed in its entirety through the heated regenerator. Particular application is in preventing disruption in the flow, composition and temperature of air of combustion preheated by flue gas.

Abstract: A sector plate for a regenerative air preheater has an outer support ring centered on an axis and normally of cylindrical shape, an inner support ring centered on the axis, and a plurality of radially extending walls lying generally in axial planes and having outer ends fixed to the outer ring and inner ends and guided on the inner ring. A plurality of angularly extending and radially spaced annular walls extend between the radial walls and form therewith axially throughgoing passages. Thus when hot gases flow in one axial direction through the passages they thermally deform the radial walls so that their ends move into a position at an angle to each other. The ring is thermally deformed to a taper equal to twice the angle for holding the inner ends of the radial walls and the inner ring in the axially level with the outer ring when hot gases flow through the passages.

Abstract: An integrated heat pump and heat storage system comprising a heat pump, a first conduit for supplying return air from an enclosure to the heat pump, a second conduit for supplying heated air from the heat pump to the enclosure, heat storage apparatus, a first damper operative in a first orientation to permit return air from the enclosure to enter the first conduit and to prevent return air from passing through the heat storage apparatus and operative in a second orientation to cause return air to pass through the heat storage apparatus for being heated thereby before entering the first conduit, a second damper operative in a first orientation to cause heated air from the second conduit to pass through the heat storage apparatus for giving up a portion of its heat for storage and operative in a second orientation to prevent heated air from the second conduit from passing through the heat storage apparatus and to permit the heated air from the second conduit to reach the enclosure.

Abstract: A recovery-type furnace for the indirect transfer of heat between two gaseous fluids flowing in opposite directions comprises two heat exchanging units which function alternately as a heating and a heated unit and which operate on a reversing cycle of a few seconds to several minutes. Each exchanging unit is packed with at least one bed of ceramic particles that rest on a metal or ceramic support. The direction of gas flow is controlled by reversing devices so that the hot gaseous fluid flows to the top of the particle bed of the heated unit and, upon cooling, passes through the bed support and from the bottom of the particle bed downwardly through the unit.

Abstract: A rotary regenerative air heater assemby (20) wherein a gas damper (18) is mounted directly atop the gas inlet (41) to air heater rotor (30). In order to permit removal of heat transfer material element baskets (40), an access opening (52) is provided in the gas damper (18). Track means (60) for supporting and guiding a hoist (62) are disposed in the duct (26) above the access opening (52) in the gas damper. Element baskets (40) may be lifted from the rotor (30) by the hoist (62) upwardly through the access opening (52) in the gas damper for removal and replacement.

Abstract: A regenerator assembly for a gas turbine engine has a hot side seal assembly formed in part by a cast metal engine block having a seal recess formed therein that is configured to supportingly receive ceramic support blocks including an inboard face thereon having a regenerator seal face bonded thereto. A pressurized leaf seal is interposed between the ceramic support block and the cast metal engine block to bias the seal wear face into sealing engagement with a hot side surface of a rotary regenerator matrix.

Abstract: Regenerative heat exchange apparatus (12) for the transfer of heat from a heating fluid (hot gas) to a fluid to be heated such as air. Valve means (16-A, 18-A, 22-A, 24-A) control the flow of heating fluid and the fluid to be heated to and through their respective ducts in the heat exchanger. A bypass duct (38) reversely directs heating fluid through the heat exchanger (12) to displace heated air trapped therein after the valve (24-A) controlling the air supply has been closed.

Abstract: Disclosed is a novel rotary heat exchanger and heat exchange system for use in gas turbine engines and other environments. The heat exchanger includes a ceramic disk having a ring gear extending about the outer circumference thereof. The ring gear is joined to the ceramic disk by means of an elastomeric member. However, means are provided for keeping the elastomeric member below its degradation temperature. These means include the provision of filler material for blocking a plurality of passages at a first and second face of the disk thus forming annular bands concentric therewith on opposite faces of the disk. A plurality of passages at the periphery of the disk radially outwardly of the bands are unobstructed by the filler material such that cooling air may flow therethrough so as to keep the elastomeric material at the desired temperature.

Abstract: An apparatus for the elimination of fumes and odors from exhaust gases simultaneously with the recovery of heat from such gases and, in particular, a rotating control means for controlling the flow of such gases, in sequence, through heat exchange chambers and a central purification chamber of such apparatus wherein the gases are preheated and incinerated to remove fumes and odors. The apparatus has annular inlet, exhaust and purging ducts located adjacent a number of heat exchange chambers disposed adjacent a purification chamber. The flow of gases from and to the ducts through selected heat exchange chambers is maintained by a rotating control means disposed between the ducts and the heat exchange chambers.

Abstract: A rotary regenerator is provided with a hydraulic drive system to vary the rotational speed in relation to the temperature scanned. The hydraulic control system provides accurate operation at low rotational speeds.

Abstract: In a housing, a clothes dryer wherein dampness in washed clothes is expelled by warm air sweeping therethrough, the air being drawn in at least partly from the environment through openings formed in the housing and heated and, after absorbing the dampness, exhausted at least partly back into the environment, the air drawn in from the environment and exhausted to the environment being conducted through two channels of a heat exchanger with a solid-body regenerator alternatingly contacted in part by the drawn-in air and the exhausted air, the improvement therein including non-hygroscopic storage material received in the regenerator and absorbing thermal energy as loss-free as possible, storing the absorbed thermal energy as loss-free as possible and subsequently surrendering the thermal energy as loss-free as possible, the regenerator being air-permeable in axial direction thereof and being mounted in the drawn-in and exhausted air channels for rotation in a manner that every region of the regenerator is altern

Abstract: A regenerator cross arm seal structure for a rotary regenerator of a gas turbine engine includes a cross arm seal extending diametrically of a matrix of the rotating regenerator which includes a center bore therein for a drive bushing and spindle; the seal having a leaf spring on one surface thereof that is engageable with an engine block support platform to seal between the engine block and one surface of a seal platform that supports a cross arm wear face with a hub section cooled by leakage of air through the center bore and the seal wear face including a material with low friction and good wear characteristics when operating at elevated temperatures between 1000.degree. F. to 1500.degree. F. (523.degree. C. to 800.degree. C.

Abstract: The invention relates to a heat-recovering fan comprising a rotating capillary impeller with a separating plate inside to separate the air currents and being in communication with separate supply air and exhaust air outlets. The invention provides a heat recovering fan having a capillary impeller. The optimum heat storage capacity of the capillary impeller is used for effecting a very high degree of heat recovery. The heat recovering fan of this invention has at least one vane wheel used as an air conveyor in combination with the capillary impeller. Consequently, there is a separation between heat exchanger, on the one hand, and air conveyor on the other hand. The capillary impeller may be designed exclusively on the basis of good heat exchanging properties such as type material and dimensions because the air conveyance is effected by at least one vane wheel. The air conveyance is performed by the vane wheel or vane wheels which on their part, are designed in accordance with their sole purposes.

Abstract: A heat exchanging element for use in a rotary-type counter-current heat exchanger is provided. The heat exchanging element comprises a gathering member composed of natural fiber, especially coconut fiber. And a rotary-type counter-current heat exchanger is provided. The heat exchanger comprises a casing, a rotary frame rotatably supported by the casing, the rotary frame having a shaft, a pair of rotor rims maintaining a predetermined distance in an axial direction of the shaft and a plurality of rotor spokes, and the heat exchanging element accommodated in the rotary frame.

Abstract: Heat is recovered from the flue gas stream discharged from a power plant combustion zone by heat exchange of the flue gas stream against the air stream which enters the combustion zone. Each gas stream flows through two rotating air preheaters, with a first preheater rotating at a constant rate and a second preheater rotating at a variable rate. The rate of rotation of the second preheater is varied to adjust the temperature of either the heated air stream or the temperature of the flue gas stream after passage through the preheaters.

Abstract: A regenerative air preheater with guide devices serving the supply and exhaust of flue gas as well as air to be heated from at least two separated partial streams and with a heat exchanger body, which heat exchanger body, by means of a relative movement between the guide devices and the heat exchanger body, alternately has passed through it heat emitting flue gas and air to be heated, whereby the temperature of the separated partial streams is regulatable. On the side of the flue gas outlet from the heat exchanger body between the dome-like guide devices for the air to be heated, a cover cap is arranged in the vicinity of one exhaust gas partial stream, which cover cap is provided with individual exhaust channels for transporting of the one exhaust gas partial stream into the other exhaust gas partial stream.

Abstract: A ventilator having a rotating drumlike heat exchanging fan and a housing with separation walls and a stationary conical member arranged in the hollow of the fan. Separation walls cooperating with external and internal sides of the fan have lips arranged according to the specification.

Abstract: A heat recovery system is provided for recovering heat from flue gases and the like and heating combustion air or the like in the form of a flue gas conduit receiving hot flue gas from a furnace or the like, a metallic recuperator receiving hot flue gas from said flue gas conduit, a ceramic regenerator selectively receiving at least a part of the hot flue gas leaving the metallic recuperator, by-pass means in parallel with the ceramic regenerator receiving any of the flue gas leaving the metallic recuperator which does not go through the ceramic regenerator, stack means receiving the flue gas from the by-pass means and the ceramic regenerator means for discharge to the atmosphere, means delivering air to be heated in parallel to the ceramic regenerator and the metallic recuperator, and conduit means receiving and combining heated air from the ceramic regenerator and the metallic recuperator for delivery to a point of use.

Abstract: Sealing apparatus is provided for a rotary heat exchanger of the regenerative type, in which the exchanger has a rotatable disc-like matrix having two opposed end faces and at least one pair of gas passages opening on to each end face of the matrix. The sealing apparatus seals at least one of the end faces for preventing leakage of gas between the two passages at the interface of the respective passage and end face and the sealing apparatus includes a plurality of sealing blocks arranged in end-to-end relation providing a flexible seal extending along the interface. Each of the blocks is of channel-shaped configuration, has a base bearing in sealing relation upon the respective end face of the matrix, and is mounted upon a respective guide member extending within the channel.

Abstract: The present invention refers to a heating and air-conditioning system for one or multi-storied buildings with multi-glazed windows contained in the facade of the building. A fresh air entrance arrangement is disposed below at least one of these windows on the outside of the facade of the building. A fresh air processing device is connected to the fresh air entrance arrangement with means to filter, heat or cool and humidify the fresh air and to expel the same over a distributing cavity arranged beneath the window. The distributing cavity is connected to a window cavity between the panes of the multi-glazed windows. An entrance opening arranged at the top end of the window, connected to the window cavity, extends over a good part of the width of the window and opens out toward the room to be air conditioned. A stale air flow out arrangement controlled by valves directs stale air out of the room.

Abstract: A solar powered air conditioner using the adsorption process is constructed with its components in a nested cylindrical array for compactness and ease of operation.

Abstract: A sealing means that lies intermediate a rotatable trunnion and fixed housing structure of a rotary regenerative heat exchanger device to preclude the flow of leakage fluid therebetween. A cooling jacket is positioned concentrically around the sealing means to simultaneously cool the sealing means and any hot fluid leaking thereto.

Abstract: An arrangement for supplying air to a boiler-furnace whereby an axial flow fan being used as a source of primary air may selectively take suction air from the atmosphere or from the discharge side of a fan being used to provide secondary air to the boiler. This arrangement will provide an increased inlet pressure for the primary air fan to thereby achieve increased stability and high system pressure for low load operation, thereby permitting the effective use of an axial flow fan as a source of primary air when such usage would otherwise be unjustified.

Abstract: A heat recovery system is provided for recovering heat from flue gases and the like and heating combustion air or the like in the form of a flue gas conduit receiving hot flue gas from a furnace or the like, a metallic recuperator receiving hot flue gas from said flue gas conduit, a ceramic regenerator selectively receiving at least a part of the hot flue gas leaving the metallic recuperator, by-pass means in parallel with the ceramic regenerator receiving any of the flue gas leaving the metallic recuperator which does not go through the ceramic regenerator, stack means receiving the flue gas from the by-pass means and the ceramic regenerator means for discharge to the atmosphere, means delivering air to be heated in parallel to the ceramic regenerator and the metallic recuperator, and conduit means receiving and combining heated air from the ceramic regenerator and the metallic recuperator for delivery to a point of use.

Abstract: A gas-liquid heat exchange device that utilizes a plurality of heat absorbent discs mounted on a horizontal axis and adapted to be rotated between a liquid and a gas stream to transfer heat from the liquid to the gas. The discs are imparted a rotational force by driving means that utilizes the gravitational force attracting the heavier liquid.