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EP0177751B1 - Gas-liquid or gas-gas heat exchanger - Google Patents

Gas-liquid or gas-gas heat exchanger Download PDF

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Publication number
EP0177751B1
EP0177751B1 EP85111134A EP85111134A EP0177751B1 EP 0177751 B1 EP0177751 B1 EP 0177751B1 EP 85111134 A EP85111134 A EP 85111134A EP 85111134 A EP85111134 A EP 85111134A EP 0177751 B1 EP0177751 B1 EP 0177751B1
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EP
European Patent Office
Prior art keywords
heat exchanger
gas
layers
heat
layer
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP85111134A
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German (de)
French (fr)
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EP0177751A3 (en
EP0177751A2 (en
Inventor
Heinz Schilling
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Heinz Schilling KG
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Heinz Schilling KG
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Priority to AT85111134T priority Critical patent/ATE46032T1/en
Publication of EP0177751A2 publication Critical patent/EP0177751A2/en
Publication of EP0177751A3 publication Critical patent/EP0177751A3/en
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Publication of EP0177751B1 publication Critical patent/EP0177751B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F28D7/085—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators

Definitions

  • Air / water and air / air heat exchangers of various types are known. These have plates or lamellae and / or pipes, the two streams of air and / or water being conducted through lines or channels and, in the meantime, one of the two media giving off its heat to the other medium. The highest degree of temperature exchange is achieved with countercurrent heat exchangers.
  • a block heat exchanger based on the cross flow principle which consists of assemblies for efficient production. Each assembly has a pipe coil on which fins are attached. The total air flow flows through all the assemblies one after the other. Furthermore, a counterflow heat exchanger is known from FR-A 1311571, which has fin blocks with insertable coils. There are air separation layers at the level of the pipe coil, so that a pipe coil influences the air flows of two lamella blocks.
  • the object of the invention is to provide a heat exchanger which has a very high degree of temperature exchange, is easy to repair and can be assembled and disassembled without great effort.
  • Such a heat exchanger is divided into individual, in the countercurrent principle heat exchanging and functional layer modules.
  • the required heat exchanger size can be selected for any heat exchange task, efficiently manufactured in modules and assembled on site at the application site. Transport and assembly are extremely simple and maintenance is not labor intensive. In the event of a defect, only the relevant heat exchanger layer needs to be repaired or replaced.
  • the exchanger surface required for the heat exchange or for the desired degree of temperature exchange can be arranged in front of one another - that is, in countercurrent. It is particularly advantageous if the height of each slat is a multiple of the distance between the slats. This means that the heat transfer takes place essentially over the fins and not over the walls separating the medium channels.
  • the lamella thickness is dimensioned in relation to the lamella material in such a way that low-energy loss heat conduction occurs.
  • a separating surface can be attached between the individual layers of the heat exchanger, which separates the medium flow of one layer from the medium flow of the adjacent layer. This means that cross turbulence is prevented and pressure losses are particularly low. Furthermore, the condensate that forms in one layer cannot run into other layers and can increasingly generate pressure losses there.
  • the fins extend into both media paths of different warmth, since it is ensured, in particular when the fins are narrow, that the heat transfer occurs essentially only via the fins and thus exergy losses are particularly low.
  • the heat flow from one medium to another is essentially only via the fins.
  • the gas / liquid, in particular air / water, heat exchanger shown in FIG. 1 is flowed through from right to left by gas or air and in countercurrent by liquid or water. It is divided into five layers 2, which form functional modules that each form a complete heat exchanger. Each layer 2 is at the inlet 3 and outlet 4 of the gas as well as at the inlet 5 and outlet 6 of the Liquid is connected separately, so that the entire gas stream and the entire liquid stream are divided into individual streams, a stream of both media being provided for each layer and these streams being combined again into a total stream behind the heat exchanger. While the gas streams 7 flow straight through the individual layers, the liquid flows back and forth in a pipe coil 8 in each layer 2, whereby the liquid stream crosses and flows against the air stream.
  • each layer 2 numerous fins 9 are fastened to the tubes 8 parallel to the gas flow, the fins 9 being perpendicular to the regions of the tubes 8 which run through the family of fins.
  • the lamella thickness is dimensioned in relation to the lamella material in such a way that low-energy loss heat conduction occurs.
  • a separating surface 10, which separates the gas paths of each layer, is fastened between each layer 2 parallel to the tubes 8 and to each layer.
  • each layer is connected at the beginning and end of the layer via a valve 11 to the inlet 5 and outlet line 6, respectively, so that the layers can be vented when they are put into operation for the first time and after closing two valves 11 each layer is easily taken out of operation, checked , can be cleaned or dismantled on the liquid side without disassembly.
  • the gas / gas, in particular air / air, heat exchanger shown in FIGS. 3 and 4 can be flowed through from left to right by exhaust air (exhaust gas) or outside air 12 and from right to left by a second gas stream 13:
  • the heat exchanger is divided into five individual, functional layer modules 2, each module having ribbed heat-conducting surfaces in order to extract and transfer heat from the gas flows flowing in countercurrent.
  • Each layer 2 has a separating plane 14 in the center, on which the slats 9 are fastened at right angles and parallel to one another.
  • the two gas flows are separated from one another by these levels 14, so that, except for the outer regions, i. H. 4 the upper and lower region, the gas flows each flow through two adjacent layers 2.
  • Each layer 2 is connected separately from the other layers to the inlet and outlet of both gas streams, so that, as in the first exemplary embodiment, both media streams are divided and flow through each layer with partial streams and are then led to the two outlets without leading to one to get to the next layer.
  • the lamellae 9 thus each extend into the paths of two different media, and the lamellae 9 are so close together that a heat flow occurs essentially only via the lamellae.
  • the height of the slats H is a multiple of the distance A from each other.
  • the lamella thickness is dimensioned in relation to the lamella material in such a way that low-energy loss heat conduction occurs.
  • Parallel separating surfaces 10 are arranged between the individual module layers 2 of the heat exchanger, and the same medium flow flows around them on both sides.
  • each layer 2 is releasably attached to the adjacent layer or layers, so that they can be easily replaced and assembled and removed.
  • Both heat exchangers can be used not only in the horizontal position shown in the figures, but also in other positions, in particular in a vertical position.
  • the degree of temperature exchange is 75 to 90%.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

A heat exchanger is formed by selectively stacking an appropriate number of functionally independent and discrete heat exchange panels, each of which is a complete heat exchanger in its own right with a set of vanes and two flow passages in indirect heat exchange relationship through said vanes.

Description

. Es sind Luft/Wasser- und Luft/Luft-Wärmeaustauscher verschiedenster Bauarten bekannt. Diese weisen Platten bzw. Lamellen und/oder Rohre auf, wobei die beiden Ströme von Luft und/oder Wasser durch Leitungen bzw. Kanäle geführt werden und währenddessen eines der beiden Medien seine Wärme an das andere Medium abgibt. Der höchste Temperaturaustauschgrad wird bei Gegenstromwärmeaustauschem erzielt.. Air / water and air / air heat exchangers of various types are known. These have plates or lamellae and / or pipes, the two streams of air and / or water being conducted through lines or channels and, in the meantime, one of the two media giving off its heat to the other medium. The highest degree of temperature exchange is achieved with countercurrent heat exchangers.

All diesen Wärmeaustauschern ist gemeinsam, daß ein hoher Temperaturaustauschgrad nur dann erzielbar ist, wenn der Wärmeaustauscher sehr groß gebaut wird. Solche auf geringste Exergieverluste ausgelegte Wärmeaustauscher führen zu Wärmeaustauscherlängen, welche für die meisten Anwendungsfälle aufgrund der Abmessungen und des Gewichts unpraktikabel sind. Ferner können diese Wärmeaustauscher nur mit erheblichem Aufwand gereinigt werden, und schon bei einem geringen Defekt am Wärmeaustauscher kann eine komplette Erneuerung erforderlich werden.All these heat exchangers have in common that a high degree of temperature exchange can only be achieved if the heat exchanger is built very large. Such heat exchangers designed for minimal exergy losses lead to heat exchanger lengths which are impractical for most applications due to their dimensions and weight. Furthermore, these heat exchangers can only be cleaned with considerable effort, and even a small defect in the heat exchanger may require a complete renewal.

Aus der GB-A 20 14 484 ist ein Blockwärmetauscher im Kreuzstromprinzip bekannt, der für eine rationelle Herstellung aus Baugruppen besteht. Jede Baugruppe besitzt eine Rohrschlange, auf der Lamellen befestigt sind. Der Gesamtluftstrom durchströmt hierbei in Reihe nacheinander alle Baugruppen. Ferner ist aus der FR-A 1311571 ein Gegenstromwärmetauscher bekannt, der Lamellenblöcke mit einlegbaren Rohrschlangen aufweist. In Höhe der Ebene der Rohrschlange befinden sich Lufttrennschichten, so daß eine Rohrschlange die Luftströme zweier Lamellenblöcke beeinflußt.From GB-A 20 14 484 a block heat exchanger based on the cross flow principle is known, which consists of assemblies for efficient production. Each assembly has a pipe coil on which fins are attached. The total air flow flows through all the assemblies one after the other. Furthermore, a counterflow heat exchanger is known from FR-A 1311571, which has fin blocks with insertable coils. There are air separation layers at the level of the pipe coil, so that a pipe coil influences the air flows of two lamella blocks.

Aufgabe der Erfindung ist es, einen Wärmeaustauscher zu schaffen, der einen sehr hohen Temperaturaustauschgrad besitzt, einfach zu reparieren ist und ohne größeren Arbeitsaufwand montiert und demontiert werden kann.The object of the invention is to provide a heat exchanger which has a very high degree of temperature exchange, is easy to repair and can be assembled and disassembled without great effort.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Gas/Flüssigkeit- oder Gas/Gas-Wärmeaustauscher parallel angeordnete Wärmeaustauscherschichten aufweisen,

  • die mit einer Vielzahl zueinander paralleler, einstückiger Wärmeleitlamellen die Wärme von einem Medium zu einem zweiten übertragen,
  • von denen jede einen vollständigen Gegenstromwärmeaustauscher bildet, der beide Medien führt,
  • die parallel zu den anderen Schichten liegen und jeweils für jedes Medium mit je einem Ein-und Auslaß an den Haupteintritts- und Austrittsleitungen des gesamten Wärmeaustauschers separat angeschlossen sind, und
  • die mit benachbarten Schichten lösbar verbunden sind.
This object is achieved in that the gas / liquid or gas / gas heat exchanger has heat exchanger layers arranged in parallel,
  • which transfer heat from one medium to a second with a large number of parallel, one-piece heat-conducting fins,
  • each of which forms a complete counterflow heat exchanger that carries both media,
  • which lie parallel to the other layers and are each separately connected to the main inlet and outlet lines of the entire heat exchanger for each medium, each with an inlet and outlet, and
  • which are releasably connected to adjacent layers.

Ein solcher Wärmeaustauscher ist in einzelne, im Gegenstromprinzip Wärme austauschende und in sich funktionsfähige Schichtmodule unterteilt. Hierdurch kann für jede beliebige Wärmeaustauschaufgabe die erforderliche Wärmeaustauschergröße gewählt, rationell in Modulen gefertigt und vor Ort an der Anwendungsstelle zusammengebaut werden. Antransport und Montage sind extrem einfach und eine Wartung wenig arbeitsaufwendig. Bei einem Defekt braucht nur die betreffende Wärmeaustauscherschicht repariert oder erneuert zu werden.Such a heat exchanger is divided into individual, in the countercurrent principle heat exchanging and functional layer modules. As a result, the required heat exchanger size can be selected for any heat exchange task, efficiently manufactured in modules and assembled on site at the application site. Transport and assembly are extremely simple and maintenance is not labor intensive. In the event of a defect, only the relevant heat exchanger layer needs to be repaired or replaced.

Da der Wärmeaustauscher in viele Einzelschichten aufgeteilt ist, kann die für den Wärmeaustausch oder für den gewünschten Temperaturaustauschgrad erforderliche Austauscherfläche voreinander - also in Gegenstrom - angeordnet werden. Besonders vorteilhaft ist es, wenn die Höhe jeder Lamelle ein Vielfaches des Abstandes zwischen den Lamellen beträgt. Dies führt dazu, daß die Wärmeübertragung im wesentlichen über die Lamellen und nicht über die die Mediumkanäle trennenden Wände erfolgt. Die Lamellendicke ist in bezug auf das Lamellenmaterial so dimensioniert, daß eine exergieverlustarme Wärmeleitung entsteht.Since the heat exchanger is divided into many individual layers, the exchanger surface required for the heat exchange or for the desired degree of temperature exchange can be arranged in front of one another - that is, in countercurrent. It is particularly advantageous if the height of each slat is a multiple of the distance between the slats. This means that the heat transfer takes place essentially over the fins and not over the walls separating the medium channels. The lamella thickness is dimensioned in relation to the lamella material in such a way that low-energy loss heat conduction occurs.

Zwischen den einzelnen Schichten des Wärmeaustauschers kann jeweils eine Trennfläche befestigt sein, die den Mediumstrom einer Schicht von dem Mediumstrom der benachbarten Schicht trennt. Dies führt dazu, daß eine Querverwirbelung verhindert wird und Druckverluste besonders gering sind. Ferner kann das sich in einer Schicht bildende Kondensat nicht in andere Schichten laufen und dort verstärkt Druckverluste erzeugen.A separating surface can be attached between the individual layers of the heat exchanger, which separates the medium flow of one layer from the medium flow of the adjacent layer. This means that cross turbulence is prevented and pressure losses are particularly low. Furthermore, the condensate that forms in one layer cannot run into other layers and can increasingly generate pressure losses there.

Insbesondere bei Gas/Gas-Wärmeaustauschern ist es von Vorteil, wenn die Lamellen in beide unterschiedlich warmen Medienwege hineinreichen, da dann insbesondere bei einem engen Lamellenstand sichergestellt ist, daß die Wärmeübertragung im wesentlichen nur über die Lamellen geschieht und damit Exergieverluste besonders gering sind. Hierzu wird auch vorgeschlagen, daß der Wärmestrom von einem Medium zum anderen im wesentlichen nur über die Lamellen erfolgt.In the case of gas / gas heat exchangers in particular, it is advantageous if the fins extend into both media paths of different warmth, since it is ensured, in particular when the fins are narrow, that the heat transfer occurs essentially only via the fins and thus exergy losses are particularly low. For this purpose, it is also proposed that the heat flow from one medium to another is essentially only via the fins.

Zwei Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben. Es zeigen :

  • Fig. 1 eine schematische Darstellung eines Gas/Flüssigkeit-Wärmeaustauschers ;
  • Fig. 2 eine perspektivische Ansicht eines Gas/Flüssigkeit-Wärmeaustauschers nach Fig. 1, mit drei Schichten ;
  • Fig. 3 eine schematische Darstellung eines Gas/Gas-Wärmeaustauschers;
  • Fig. 4 eine perspektivische Darstellung eines Gas/Gas-Wärmeaustauschers nach Fig. 3.
Two embodiments of the invention are shown in the drawings and are described in more detail below. Show it :
  • Figure 1 is a schematic representation of a gas / liquid heat exchanger.
  • FIG. 2 shows a perspective view of a gas / liquid heat exchanger according to FIG. 1, with three layers;
  • 3 shows a schematic illustration of a gas / gas heat exchanger;
  • 4 shows a perspective illustration of a gas / gas heat exchanger according to FIG. 3.

Der in Fig. 1 dargestellte Gas/Flüssigkeit-, insbesondere Luft/Wasser-Wärmeaustauscher wird von rechts nach links von Gas bzw. Luft und im Gegenstrom von Flüssigkeit bzw. Wasser durchströmt. Er ist in fünf Schichten 2 aufgeteilt, die in sich funktionsfähige Module bilden, die jeweils damit einen kompletten Wärmeaustauscher bilden. Jede Schicht 2 ist am Eintritt 3 und Austritt 4 des Gases als auch am Einlaß 5 und Auslaß 6 der Flüssigkeit getrennt angeschlossen, so daß sich der gesamte Gasstrom als auch der gesamte Flüssigkeitsstrom in einzelne Ströme aufteilt, wobei für jede Schicht ein Strom beider Medien vorgesehen ist und hinter dem Wärmeaustauscher diese Ströme wieder jeweils in einen Gesamtstrom zusammengeführt sind. Während die Gasströme 7 die einzelnen Schichten geradlinig durchströmen, fließt die Flüssigkeit in jeder Schicht 2 in einer Rohrschlange 8 hin und her, wobei hierdurch der Flüssigkeitsstrom den Luftstrom kreuzt und ihm entgegenströmt.The gas / liquid, in particular air / water, heat exchanger shown in FIG. 1 is flowed through from right to left by gas or air and in countercurrent by liquid or water. It is divided into five layers 2, which form functional modules that each form a complete heat exchanger. Each layer 2 is at the inlet 3 and outlet 4 of the gas as well as at the inlet 5 and outlet 6 of the Liquid is connected separately, so that the entire gas stream and the entire liquid stream are divided into individual streams, a stream of both media being provided for each layer and these streams being combined again into a total stream behind the heat exchanger. While the gas streams 7 flow straight through the individual layers, the liquid flows back and forth in a pipe coil 8 in each layer 2, whereby the liquid stream crosses and flows against the air stream.

In jeder Schicht 2 sind parallel zum Gasstrom zahlreiche Lamellen 9 an den Rohren 8 befestigt, wobei die Lamellen 9 senkrecht zu den Bereichen der Rohre 8 stehen, die durch die Lamellenschar laufen. Die Lamellendicke ist in bezug auf das Lamellenmaterial so dimensioniert, daß eine exergieverlustarme Wärmeleitung entsteht. Zwischen jeder Schicht 2 ist parallel zu den Rohren 8 und zu jeder Schicht eine Trennfläche 10 befestigt, die die Gaswege jeder Schicht voneinander trennt. Die Rohre jeder Schicht sind am Anfang und Ende der Schicht jeweils über ein Ventil 11 an der Einlaß- 5 bzw. Auslaßleitung 6 angeschlossen, so daß die Schichten bei Erstinbetriebnahme entlüftet werden können und nach Verschließen zweier Ventile 11 jede Schicht leicht außer Betrieb genommen, überprüft, ohne Demontage flüssigkeitsseitig gereinigt oder auch demontiert werden kann.In each layer 2, numerous fins 9 are fastened to the tubes 8 parallel to the gas flow, the fins 9 being perpendicular to the regions of the tubes 8 which run through the family of fins. The lamella thickness is dimensioned in relation to the lamella material in such a way that low-energy loss heat conduction occurs. A separating surface 10, which separates the gas paths of each layer, is fastened between each layer 2 parallel to the tubes 8 and to each layer. The tubes of each layer are connected at the beginning and end of the layer via a valve 11 to the inlet 5 and outlet line 6, respectively, so that the layers can be vented when they are put into operation for the first time and after closing two valves 11 each layer is easily taken out of operation, checked , can be cleaned or dismantled on the liquid side without disassembly.

Der in den Figuren 3 und 4 dargestellte Gas/Gas-, insbesondere Luft/Luft-Wärmeaustauscher kann von links nach rechts von Abluft-(Abgas) bzw. Außenluft 12 und von rechts nach links von einem zweiten Gasstrom 13 durchströmt werden: Der Wärmeaustauscher ist in fünf einzelne, in sich funktionsfähige Schichtmodule 2 aufgeteilt, wobei jedes Modul berippte Wärmeleitflächen aufweist, um den im Gegenstrom strömenden Gasmengen Wärme zu entziehen und zu übertragen. Jede Schicht 2 weist mittig eine Trennebene 14 auf, an der Lamellen 9 rechtwinklig und zueinander parallel befestigt sind. Die beiden Gasströme werden durch diese Ebenen 14 voneinander getrennt, so daß bis auf die Außenbereiche, d. h. in Fig. 4 der obere und untere Bereich, die Gasströme jeweils durch zwei benachbarte Schichten 2 strömen.The gas / gas, in particular air / air, heat exchanger shown in FIGS. 3 and 4 can be flowed through from left to right by exhaust air (exhaust gas) or outside air 12 and from right to left by a second gas stream 13: The heat exchanger is divided into five individual, functional layer modules 2, each module having ribbed heat-conducting surfaces in order to extract and transfer heat from the gas flows flowing in countercurrent. Each layer 2 has a separating plane 14 in the center, on which the slats 9 are fastened at right angles and parallel to one another. The two gas flows are separated from one another by these levels 14, so that, except for the outer regions, i. H. 4 the upper and lower region, the gas flows each flow through two adjacent layers 2.

Jede Schicht 2 ist getrennt von den anderen Schichten an den Einlaß und Auslaß beider Gasströme angeschlossen, so daß, wie schon im ersten Ausführungsbeispiel, beide Medienströme aufgeteilt werden und jeweils mit Teilströmen jede Schicht durchströmen und danach zu den beiden Auslässen geführt werden, ohne zu einer nächsten Schicht zu gelangen. Die Lamellen 9 reichen somit jeweils in die Wege zweier unterschiedlicher Medien hinein, und die Lamellen 9 stehen so nah beieinander, daß ein Wärmestrom im wesentlichen nur über die Lamellen erfolgt. Die Höhe der Lamellen H beträgt ein Vielfaches des Abstandes A voneinander. Die Lamellendicke ist in bezug auf das Lamellenmaterial so dimensioniert, daß eine exergieverlustarme Wärmeleitung entsteht.Each layer 2 is connected separately from the other layers to the inlet and outlet of both gas streams, so that, as in the first exemplary embodiment, both media streams are divided and flow through each layer with partial streams and are then led to the two outlets without leading to one to get to the next layer. The lamellae 9 thus each extend into the paths of two different media, and the lamellae 9 are so close together that a heat flow occurs essentially only via the lamellae. The height of the slats H is a multiple of the distance A from each other. The lamella thickness is dimensioned in relation to the lamella material in such a way that low-energy loss heat conduction occurs.

Zwischen den einzelnen Modulschichten 2 des Wärmeaustauschers sind parallele Trennflächen 10 angeordnet, die jeweils beidseitig vom selben Mediumstrom umströmt werden.Parallel separating surfaces 10 are arranged between the individual module layers 2 of the heat exchanger, and the same medium flow flows around them on both sides.

Bei beiden Ausführungsbeispielen ist jede Schicht 2 lösbar an der oder den benachbarten Schichten befestigt, so daß sie leicht auswechselbar und montierbar als auch demontierbar sind. Beide Wärmeaustauscher lassen sich nicht nur in der in den Figuren dargestellten waagerechten Lage, sondern auch in anderen Lagen, insbesondere einer senkrechten, verwenden. Der Temperaturaustauschgrad beträgt 75 bis 90 %.In both embodiments, each layer 2 is releasably attached to the adjacent layer or layers, so that they can be easily replaced and assembled and removed. Both heat exchangers can be used not only in the horizontal position shown in the figures, but also in other positions, in particular in a vertical position. The degree of temperature exchange is 75 to 90%.

Claims (6)

1. Gas-liquid or gas-gas heat exchanger, with parallel-arranged heat exchanger layers (2)
which, with a plurality of one-piece heat- conducting lamellae (9) situated parallel to one another, transfer heat from one medium to a second,
each of which forms a complete countercurrent-flow heat exchanger conducting both the media,
which are situated parallel to the other layers (2) and are each connected separately for each medium, by means of an inlet and an outlet in each case, to the main entry and exit conduits of the overall heat exchanger (1), and
which are releasably connected to the neighbouring layers (2).
2. Heat exchanger according to claim 1, characterised in that the height (H) of each lamella (9) amounts to a multiple of the spacing between the lamellae.
3. Heat exchanger according to claim 1 or 2, characterised in that between the layers (2) there is arranged in each case a partition (10) which separates the medium flow of one layer from the medium flow of the neighbouring layer.
4. Heat exchanger for an air-air exchange according to one of the preceding claims, characterised in that the lamellae (9) extend into both of the differing-temperature media paths of flow.
5. Heat exchanger according to claim 4, characterised in that the heat flow from one medium to the other occurs substantially only through the lamellae (9).
6. Heat exchanger according to one of the preceding claims, characterised in that the conduits leading to each layer (2) are capable of being shut-off by valves separately from the other layers.
EP85111134A 1984-09-13 1985-09-04 Gas-liquid or gas-gas heat exchanger Expired EP0177751B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85111134T ATE46032T1 (en) 1984-09-13 1985-09-04 GAS/LIQUID OR GAS/GAS HEAT EXCHANGER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843433598 DE3433598A1 (en) 1984-09-13 1984-09-13 METHOD FOR PRACTICAL USE OF THE COUNTERFLOW PRINCIPLE FOR HEAT EXCHANGER, AIR / WATER, AIR / AIR OR SENSUAL MEASUREMENT FOR OTHER MEDIA
DE3433598 1984-09-13

Publications (3)

Publication Number Publication Date
EP0177751A2 EP0177751A2 (en) 1986-04-16
EP0177751A3 EP0177751A3 (en) 1986-10-22
EP0177751B1 true EP0177751B1 (en) 1989-08-30

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ID=6245290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111134A Expired EP0177751B1 (en) 1984-09-13 1985-09-04 Gas-liquid or gas-gas heat exchanger

Country Status (5)

Country Link
US (1) US4738309A (en)
EP (1) EP0177751B1 (en)
AT (1) ATE46032T1 (en)
DD (1) DD239655A5 (en)
DE (2) DE3433598A1 (en)

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Also Published As

Publication number Publication date
DD239655A5 (en) 1986-10-01
DE3572723D1 (en) 1989-10-05
US4738309A (en) 1988-04-19
ATE46032T1 (en) 1989-09-15
EP0177751A3 (en) 1986-10-22
EP0177751A2 (en) 1986-04-16
DE3433598A1 (en) 1986-03-20

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