Abstract: An insertable contact body for one medium or several media, e.g. for heat exchangers, cooling towers, scrubbers or the like, which body is composed of sheets (10, 12; 20, 22; 28; 32) provided with folds or corrugations. The sheets are arranged adjacent one another in such a manner that the folds in adjacent sheets extend angularly relative one another. The sheets are arranged at a distance from one another, whereby a major part of those folds which form an angle with each other are separated from one another by an interspace between their crest without the same bearing against one another. This is preferably accomplished by means of distance members (18; 24; 30; 34), by which the sheets are kept at the said distance.
Abstract: A contact body especially for evaporative cooling of a flow of useful air by means of a flow of cooling air. The contact body is built up of layers with slots existing between the layers, which slots are passed by the two air flows separated from each other, the heat exchange being effected through the walls of the layers. The layers comprise panels rigid in shape and composed of plane plates located in parallel adjacent relationship. Arranged between the plane plates are stiffening members provided with flanges and defining the clearance between the plane plates and extending in the direction of flow of the stream of useful air. The panels are composed to a contact body by means of straight, elongated spacer members, which extend in the direction of flow of the stream of cooling air.
Abstract: Illustrated and described is an apparatus for the separation of liquid drops or particulate solids from a gas stream comprising a plurality of parallel separator plates, a flow passage being formed between every two separator plates, each separator plate having at least one wave crest disposed approximately in its center and two wave troughs disposed at its edge on the inlet side and the outlet side, respectively, and forming an inlet section and an outlet section, respectively, as well as impingement-wall sections formed between the wave crest and the wave troughs, a main phase-separator chamber open in a direction counter to the direction of the gas flow being formed externally on the wave crest.In accordance with the invention, high separation efficiency with low pressure drop or low energy loss is obtained by providing an inlet nozzle formed in the inlet section, the gas stream being directable by means of the inlet nozzle onto the region on the inlet side of the opposite impingement-wall section.
October 11, 1983
Date of Patent:
April 8, 1986
Aktiebolaget Carl Munters
Ulrich Regehr, Horst Hannemann, Ernst A. Reinhard, Matthias Jansen
Abstract: In an evaporative cooler having a casing, a multi-layer type contact body and means for supplying water to selected channels in the contact body, the top edges of the contact body are formed to define outwardly widened openings communicating with only selected channels in the body. The water supply means supplies water to only some of the openings so that alternating channels on the contact body are passed with both water and air and the remainder only with air. As a result the formation of mist at the discharge end of the cooler can be avoided.
Abstract: A method of preparing cells for the purpose of enabling one fluid to be affected by another fluid via thin membranes of inorganic artificial fibres, which membranes are corrugated all over or in part and caused to bear upon each other along discrete lines of contact so as to form through passages or compartments for the fluids. The cell is constructed of membranes of artificial fibres which have a filament diameter of at least 3 and at most 20 micrometers and are elastic. The fibres are loosely matted so that when the spaces between the fibres in the assembled cell have been filled with a fine powder which is bound with an inorganic binder the powder forms a load-bearing layer which is cohesive throughout the surface extension of the membrane and through its cross-section and in which the fibres act as reinforcement.
Abstract: In an evaporative cooler having a casing, a multilayer type contact body and means for supplying water to selected channels in the contact body, the top edges of the contact body are formed to define outwardly widened openings communicating with only selected channels in the body. The water supply means supplies water to only some of the openings so that alternating channels on the contact body are passed with both water and air and the remainder only with air. As a result the formation of mist at the discharge end of the cooler can be avoided.
Abstract: The invention relates to spray booths intended for spraying or painting of articles and designed to be passed by a stream of atmospheric air admitted through inlet ducts and exhausted through outlet ducts and therebetween forced through a water curtain formed inside the spray booth for separating off paint particles remaining in turbulent movement in the air after ejection from a spray gun operating in the interior of said spray booth. To improve economy in the operation of the spray booth it is desirable to bring about heat exchange between the exhaust air and the incoming atmospheric air. However, due to excessive cooling of the exhaust air with its high moisture content and low temperature after passage through the water curtain by the heat exchange with the admitted atmospheric air of low temperature especially during the cooled season there is a great risk of ice precipitation in, and clogging of, the air passageways in the exchanger.
Abstract: A device for use with heat exchangers for the transfer of sensible and latent heat between a gaseous and liquid medium is provided. The device includes a first set of narrower passageways defined between at least two corrugated foils to receive the liquid medium, and a second set of wider passageways to receive the gaseous medium. The surfaces of the foils defining the narrow liquid passageways have closely spaced fine ridges which cross the corrugations. These fine ridges cause flow resistance and result in the liquid medium in the liquid passageways being distributed over the entire surface area of the foils defining the liquid passageways, thus enhancing heat transfer. Furthermore, because the ridges tend to rigidify the foils defining the liquid passageways, these foils can be formed from a relatively thin material, thus further enhancing heat transfer between the liquid and the gas mediums.
Abstract: Method and device for defrosting or deicing heat exchangers of the type in which a stream of warm, moist gas, such as warm, used ventilating air--so-called exhaust air--exchanges heat with a cooler medium, such as incoming fresh air, in a contact apparatus, and in which the two media flow through a large number of parallel layers separated from each other by thin walls.
Abstract: A spraying system for distributing liquid over a contact body in biological filter beds, cooling towers and the like includes means for supplying and distributing the liquid over the surface of the contact body. The distributing means includes a liquid distribution pipe, at least one spray nozzle associated with the pipe and a sprayer for spreading the liquid discharged from the nozzle onto the surface of the contact body. The distributing pipe and nozzle are disposed below the sprayer and the sprayer consists of a conically shaped surface facing the nozzle so that liquid from the nozzle strikes the conical surface and is spread over the surrounding area of the contact body. Preferably the conical surface includes projections formed thereon for distributing the liquid in a predetermined pattern.
Abstract: A heat exchange system in which sensible and/or latent heat is exchanged between a stream of incoming air into an enclosure and a stream of air leaving the enclosure, comprising a heat exchanger for the incoming air and a heat exchanger for the leaving air, each of said exchangers comprising a group of passages through which the incoming air stream and the leaving air stream, respectively, flow in heat exchange relationship with a liquid passing through a separate group of passages. The liquid is circulated in a closed circuit between the two exchangers in a duct leading from the heat exchanger for the incoming air to the heat exchanger for the leaving air, and, upon heat exchange with the leaving air, recirculated in a separate duct to the heat exchanger for the incoming air.
Abstract: A method of producing a sorption body is disclosed in which a plurality of sheets of asbestos paper are formed from a fiber pulp having molecular sieves placed therein. The sheets are arranged in contact with one another at spaced points to form transectional channels therebetween for the media which are to pass through the body, with the sheets supporting each other. The assembled sheets are subjected to an increase in temperature sufficient to drive off the organic binding agents present in the paper and to break down the asbestos fiber to a powdery consistency.
Abstract: A method and apparatus for transferring energy in an absorption system according to the heat pump principle to improve the cycle efficiency thereof, in which the selected working medium is vaporized in an evaporator by heat exchange with heat source of ambient pressure and passed into a sorption station where it is brought into contact with an absorbent solution with consequent release of heat of absorption and heat of condensation. The mixture of absorbent solution and absorbed working medium is passed from the sorption station into a pressurized separating station, where the absorbent is separated from the working medium by diffusing the mixture under pressure through a semi-permeable membrane defining a zone of relatively high pressure and a zone of relatively low pressure higher than the ambient pressure, the concentrated absorbent solution being collected in the high pressure zone and the solution of working medium being received in the low pressure zone by virtue of the resultant reverse osmotic flow.
Abstract: Purifier unit comprising a porous body coated with a substance having catalytic action to bring about purification of a medium, primarily a gas passing through the unit. A main field of use is the purification of hot exhaust gases from internal combustion engines. To render the porous purifier unit insensitive to the high temperature of the engine exhaust gases and the great variations of temperature particularly in winter time when starting a motor vehicle, and at the same time resistant to high mechanical stress and shock arising mainly from jolts and vibrations of a motor vehicle in motion, the porous body is comprised of a plurality of thin, at least partly corrugated, layers forming between themselves fine passageways extending from end to end for the medium to be purified and coated with the catalyst. The layers consist of a skeleton obtained from asbestos paper by precipitation of certain inorganic substances and subsequent heating to the fusing or slagging temperature for said substances.
Abstract: The present invention relates to an apparatus for corrugating a web of sheet material in a continuous process by means of an elongated mold movable in an endless closed path and composed of plate elements disposed in a row the one behind the other and in one straight portion together constituting a forming table having preferably diagonally extending, mutually parallel, grooves.The plate elements are by means of journals supported on and mounted in driving members disposed on either side of the path and equipped with turning wheels, the individual plate elements following the driving members with the same side facing upwards during the whole trave along the closed path.The primary field of application of the product manufactured in the apparatus are corrugated sheet pieces intended to form the fill in contact or exchanger bodies for two fluids, of which one may be a liquid, such as water, and the other a gas, such as air.
Abstract: Method of manufacturing a heat exchanger body composed of a plurality of facially-opposed corrugated rectangular sheets of a deformable material with corrugations in alternate sheets crossing the corrugations in the intervening sheets and forming a series of channels through which two streams of gaseous medium are forced crosswise in heat exchange relationship with one another. The juxtaposed edges of the sheets are displaced so that the edges on the same side of the body are alternately sealed and form openings therebetween for admission of the gaseous media into the channels. The edges of the corrugated sheets, prior to being assembled into a heat exchange body, are pressed flat, with flat edges at two of the opposite sides extending substantially in the same plane and the contiguous flat edges at the other two opposite sides being displaced relative to the plane of the first two opposite edges.
Abstract: A method of manufacturing a contact body is disclosed wherein the contact body is built up of thin layers of hydrated asbestos fibers shaped between mutually spaced support positions to form channels extending from end to end of the contact body. The layers have a coating thereon of at least one inorganic substance and the layer body is heated to at least the dehydration temperature of the asbestos, at which the water of crystallization is released by passing a current of hot gas through the channels in the contact body for a relatively short period of time in order to effect the intended action on the body.
Abstract: A method of manufacturing a contact body is disclosed wherein layers of asbestos are formed and arranged so that the individual layers bear against one another at mutually spaced positions to provide a plurality of channels extending through the body from one end to the other with the layers being heated together with at least one substance containing silicon and aluminum to sintering temperature. The addition of silicon and alumina to the contact body is adjusted so that in the sintered layers the ratio, by weight, of the oxide of silicon to the oxides of aluminum and magnesium is in the range of 45-55% SiO.sub.2, 30-45% Al.sub.2 O.sub.3 and 10-20% MgO.
Abstract: A method of manufacturing a contact body for at least one flowing medium is disclosed wherein layers of asbestos fibers are formed and arranged so that the layers bear against one another at mutually spaced positions to provide channels in the body extending from one end thereof to the other to allow the flowing medium to pass therethrough. The layers of the contact body are first treated by supplying to the layers at least one inorganic substance which produces a hydrated precipitate on the asbestos fibers of the layers. Thereafter the layers are heated to a temperature which is at least within a temperature range at which the hydrated precipitate releases its water of crystallization, but which temperature is below the sintering temperature for the substances remaining in the body. As a further step, at least one further substance is supplied to the contact body layers which restores the mechanical strength of the body lost by the transformation of the asbestos fibers during the heating step.
Abstract: The invention relates to A Purifier unit comprises a porous body coated with a substance having catalytic action to bring about purification of a medium, primarily a gas passing through the unit. A main field of use is the purification of hot exhaust gases from internal combustion engines. To render the porous purifier unit insensitive to the high temperature of the engine exhaust gases and the great variations of temperature, particularly in winter time when starting a motor vehicle, and at the same time resistant to high mechanical stress and shock arising mainly from jolts and vibrations of a motor vehicle in motion, the porous body is comprised of a plurality of thin, at least partly corrugated, layers forming between themselves fine passageways extending from end to end for the medium to be purified and coated with the catalyst.