EP0303096A1 - Surface cooler as an air cooler - Google Patents

Surface cooler as an air cooler Download PDF

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Publication number
EP0303096A1
EP0303096A1 EP88111993A EP88111993A EP0303096A1 EP 0303096 A1 EP0303096 A1 EP 0303096A1 EP 88111993 A EP88111993 A EP 88111993A EP 88111993 A EP88111993 A EP 88111993A EP 0303096 A1 EP0303096 A1 EP 0303096A1
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EP
European Patent Office
Prior art keywords
air
cooler
cooling
tube
housing
Prior art date
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.)
Withdrawn
Application number
EP88111993A
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German (de)
French (fr)
Inventor
Markfried Schauer
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Individual
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Individual
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Publication of EP0303096A1 publication Critical patent/EP0303096A1/en
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Classifications

    • 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F3/00—Cooling or drying of air
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/02—Streamline-shaped elements

Definitions

  • the invention relates to a surface cooler as an air cooler according to the preamble of the main claim.
  • weather coolers For cooling mine weather, surface coolers are known as weather coolers, in which the weather (air) and the cooling water are separated from one another, the cooling water being passed through finned pipes made of a good heat-conducting material and bringing the weather into contact with the surface of these pipes will.
  • a fan is connected upstream or downstream of the weather cooler, which feeds a certain weather current to the cooler.
  • the cooler itself usually consists of an inlet hood from the actual heat exchanger, i. H. the cooling register, and an outlet hood, wherein a droplet separator and a condensate outlet can also be provided in front of the outlet hood.
  • Cooling water is pumped through the pipes of the cooling register, which is usually in the most thermodynamically effective manner, namely in countercurrent to Weather current, is led.
  • the pipes of the cooling register are assigned a distributor pipe at the beginning and a header pipe at the end of the register.
  • a surface cooler is known from DE-GM 86 31 320 in which the exchanger performance is improved and which should be mobile with high air performance.
  • this known arrangement also uses finned tubes that have a tendency to become blocked and contaminated.
  • the heat transfer in finned tubes is also only unsatisfactory that the heat transfer in finned tubes decreases with increasing size of the fin.
  • pipes with a large diameter are not to be used, since no turbulent flow of the cooling medium is effected within the pipes with a large diameter, but this is necessary to ensure the necessary heat transfer.
  • large pipes require a lot of space and create a large air resistance.
  • the finned tubes are equipped with very narrow fins, but this leads to contamination, especially when such surface coolers are used in underground mining operations.
  • the invention has for its object to provide a surface cooler of the generic type, in which a good heat transfer from the inside of the tube to the medium flowing around the tubes is possible, on the other hand, the flow resistance for the cooling water is not increased too much and finally the resistance against air flowing through is not increased too much.
  • this surface cooler should be usable in heavily soiled rooms, so that it e.g. B. can also be easily used underground.
  • the incoming air is opposed to a large surface of the exchanger tube, but this air now does not create a dead space behind the exchanger tube, as is the case with round tubes, but the large drop-shaped design that follows the round part of the tube Wall surface created, where the air passes and can continue to lead to an effective heat transfer.
  • the drop shape of the tube creates a very good heat transfer with a relatively small surface area and that the smooth tube used according to the invention leads to good self-cleaning of the surface cooler by means of the condensate water that occurs.
  • Fig. 1 denotes a surface cooler, which essentially consists of a housing 2, with an air inlet 3 and an air outlet 4.
  • a heat exchanger is arranged in the housing 2, the cooling register 5 of which is formed by a plurality of tubes 7 arranged in parallel and one above the other is formed, which are designed as smooth tubes with a teardrop shape in cross section, as shown more clearly in FIG. 2.
  • the inlet for the cold water to be supplied to the cooling register 5 can be seen at 9 in FIG. 1, and the outlet of the heated water which has flowed through the cooling register 5 can be seen at 10.
  • the water fed to the inlet 9 reaches the cooling register 5 via a distributor pipe 12 which is connected to the first series of pipes 7 of the cooling register 5.
  • the inlet 3 for the dirty air leads inside the housing 2 to a nozzle chamber 16, from which the air is now guided across the cooling register 5, then into a diffuser chamber 17 and from there to the outlet 4.
  • Fig. 2 shows that the tubes 7 have a teardrop shape when viewed in cross section, the round wall 8 of the tube 7 being flown by the air supplied through the inlet 3, which then, after flowing around the tube 7, also drops out to the outside of the upper, creates drop-shaped area 11 of the tube 7 and thus a large exchanger creates space.

Abstract

Only tubes (7) which have a smooth surface, are not provided with ribs and in addition are of tear-shaped design are used in the cooling register (5) of a surface cooler (1), the round wall area (8) of the tube (7) being turned towards the incoming air, and the tear-shaped wall area (11) of the tube (7) extending in the outflow direction of the air. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Oberflächenküh­ler als Luftkühler gemäß dem Oberbegriff des Haupt­anspruches.The invention relates to a surface cooler as an air cooler according to the preamble of the main claim.

Für das Kühlen von Grubenwettern sind Oberflächen­kühler als Wetterkühler bekannt, bei denen die Wet­ter (Luft) und das Kühlwasser voneinander getrennt sind, wobei das Kühlwasser durch berippte, aus gut wärmeleitendem Material bestehende Rohre geführt wird und die Wetter in Kontakt mit der Oberfläche dieser Rohre gebracht werden. Dem Wetterkühler ist dabei ein Lüfter vor- oder nachgeschaltet, der dem Kühler einen bestimmten Wetterstrom zuführt. Der Kühler selbst besteht üblicherweise aus einer Ein­trittshaube aus dem eigentlichen Wärmetauscher, d. h. dem Kühlregister, und einer Austrittshaube, wobei weiterhin vor der Austrittshaube ein Tropfen­abscheider und ein Tauwasseraustritt vorgesehen sein kann.For cooling mine weather, surface coolers are known as weather coolers, in which the weather (air) and the cooling water are separated from one another, the cooling water being passed through finned pipes made of a good heat-conducting material and bringing the weather into contact with the surface of these pipes will. A fan is connected upstream or downstream of the weather cooler, which feeds a certain weather current to the cooler. The cooler itself usually consists of an inlet hood from the actual heat exchanger, i. H. the cooling register, and an outlet hood, wherein a droplet separator and a condensate outlet can also be provided in front of the outlet hood.

Durch die Rohre des Kühlregisters wird Kühlwasser gepumpt, das in der Regel in der thermodynamisch wirkungsvollsten Weise, nämlich im Gegenstrom zur Wetterströmung, geführt wird. Den Rohren des Kühlre­gisters ist ein Verteilerrohr am Anfang und ein Sam­melrohr am Ende des Registers zugeordnet.Cooling water is pumped through the pipes of the cooling register, which is usually in the most thermodynamically effective manner, namely in countercurrent to Weather current, is led. The pipes of the cooling register are assigned a distributor pipe at the beginning and a header pipe at the end of the register.

Man ist natürlich bestrebt, ein möglichst großflä­chiges Kühlregister in den Oberflächenkühler einzu­bauen, was aber den Nachteil hat, daß je dichter die Berippung des Kühlregisters ausgeführt wird, die An­fälligkeit gegenüber Verschmutzungen durch anhaften­den Staub stark zunimmt. Um trotzdem einerseits eine gute Tauscherleistung zu erreichen, andererseits die Verschmutzungen zu vermeiden, ist man bisher dazu übergegangen, entsprechende Reinigungseinrichtungen vorzusehen, mit denen die Kühlflächen des Kühlre­gisters bearbeitet werden. Hierbei sind Sprühein­richtungen bekanntgeworden, die in festen zeitlichen Intervallen arbeiten. Versuchsweise ist auch vorge­schlagen worden, durch Führungsgrößen ist auch vorge­seitiger Druckverbrauch oder Kaltwasseraustrittstem­peratur, die Besprühung zu steuern.Of course, efforts are made to install a cooling register of the largest possible area in the surface cooler, but this has the disadvantage that the denser the ribbing of the cooling register is carried out, the susceptibility to contamination by adhering dust increases sharply. In order to nevertheless achieve good exchanger performance on the one hand and to avoid contamination on the other hand, it has hitherto been used to provide appropriate cleaning devices with which the cooling surfaces of the cooling register are processed. Here, spray devices have become known that work at fixed time intervals. Experimentally, it has also been suggested that the spraying can also be controlled by means of reference variables, such as pressure consumption or cold water outlet temperature.

Diese bekannten Reinigungsverfahren haben sich in der Praxis aber nicht bewährt, da es nicht erreich­bar war, den feinen Kohlen- und Gesteinsstaub durch entsprechende Sprüheinrichtungen in ausreichendem Maße abzuwaschen, so daß festgestellt werden mußte, daß nach mehr oder weniger kurzer Betriebszeit die Tauscherleistung derartiger Oberflächenkühler so weit zurückging, daß keine wirksame Kühlung der Wetter mehr erreicht werden konnte.However, these known cleaning methods have not proven themselves in practice, since it was not possible to wash off the fine coal and rock dust to a sufficient extent by appropriate spraying devices, so that it had to be found that after a more or less short operating time the exchanger performance of such surface coolers went back far that effective cooling of the weather could no longer be achieved.

Aus dem DE-GM 86 31 320 ist ein Oberflächenkühler bekannt, bei welchem die Tauscherleistung verbessert und der mit hoher Luftleistung fahrbar sein sollte.A surface cooler is known from DE-GM 86 31 320 in which the exchanger performance is improved and which should be mobile with high air performance.

Diese bekannte Anordnung verwendet aber ebenfalls Rippenrohre, die zum Verstopfen und Verschmutzen neigten. Auch ist der Wärmeübergang bei Rippenroh­ren nur unzufriedenstellend, das der Wärmeübergang bei Rippenrohren mit zunehmender Größe der Rippe abnimmt. Einen großen Durchmesser aufweisende Rohre sind aber nicht einzusetzen, da innerhalb der einen großen Durchmesser aufweisenden Rohre keine turbu­lente Strömung des Kühlmediums bewirkt wird, die aber erforderlich ist, um den notwendigen Wärme­übergang sicherzustellen. Außerdem benötigen große Rohre einen hohen Platzbedarf und schaffen einen großen Luftwiderstand. Um diese Probleme zu be­herrschen, sind die Rippenrohre mit sehr engstehen­den Rippen ausgerüstet, was aber zu Verschmutzungen führt, insbesondere dann, wenn derartige Oberflä­chenkühler im untertägigen Grubenbetrieb eingesetzt werden.However, this known arrangement also uses finned tubes that have a tendency to become blocked and contaminated. The heat transfer in finned tubes is also only unsatisfactory that the heat transfer in finned tubes decreases with increasing size of the fin. However, pipes with a large diameter are not to be used, since no turbulent flow of the cooling medium is effected within the pipes with a large diameter, but this is necessary to ensure the necessary heat transfer. In addition, large pipes require a lot of space and create a large air resistance. In order to master these problems, the finned tubes are equipped with very narrow fins, but this leads to contamination, especially when such surface coolers are used in underground mining operations.

Werden kleine Rohre eingesetzt, in denen eine gute turbulente Strömung erzeugbar ist, wird die Rohr­länge zu groß und damit wird der Durchflußwiderstand für das Wasser enorm gesteigert, so daß auch diese Lösung nicht akzeptabel erscheint.If small pipes are used in which a good turbulent flow can be generated, the pipe length becomes too long and the flow resistance for the water is increased enormously, so that this solution also does not appear to be acceptable.

Der Erfindung liegt die Aufgabe zugrunde, einen Oberflächenkühler der gattungsbildenden Art zu schaffen, bei dem ein guter Wärmeübergang vom Inne­ren des Rohres zum die Rohre außen umströmenden Medium möglich ist, andererseits der Durchfluß­widerstand für das Kühlwasser nicht zu stark erhöht wird und schließlich der Widerstand gegen die durch­strömende Luft nicht zu stark heraufgesetzt wird. Gleichzeitig soll dieser Oberflächenkühler in stark verschmutzten Räumen einsetzbar sein, so daß er z. B. problemlos auch Untertage angewandt werden kann.The invention has for its object to provide a surface cooler of the generic type, in which a good heat transfer from the inside of the tube to the medium flowing around the tubes is possible, on the other hand, the flow resistance for the cooling water is not increased too much and finally the resistance against air flowing through is not increased too much. At the same time, this surface cooler should be usable in heavily soiled rooms, so that it e.g. B. can also be easily used underground.

Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelöst.This object on which the invention is based is achieved by the teaching of the main claim.

Dadurch, daß die Tauscherrohre nunmehr glatt und ohne Rippen ausgestaltet sind, andererseits aber eine im Querschnitt gesehen tropfenförmige Gestalt aufweisen, wird erreicht, daß ein relativ großer Rohrinnenraum zur Verfügung gestellt wird, der gleichzeitig aber eine turbulente Strömung des darin fließenden Wassers bewirkt.The fact that the exchanger tubes are now smooth and without fins, but on the other hand have a teardrop-shaped shape when viewed in cross section, means that a relatively large tube interior is made available, which at the same time, however, causes a turbulent flow of the water flowing therein.

Weiterhin wird der anströmenden Luft eine große Oberfläche des Tauscherrohres entgegengesetzt, aber diese Luft schafft nunmehr nicht hinter dem Tau­scherrohr einen toten Raum, wie dies bei runden Rohren der Fall ist, sondern durch die sich an den runden Teil des Rohres anschließende tropfenförmige Gestaltung wird eine große Wandfläche geschaffen, an der die Luft vorbeistreicht und hier weiterhin zu einem wirksamen Wärmeübergang führen kann.Furthermore, the incoming air is opposed to a large surface of the exchanger tube, but this air now does not create a dead space behind the exchanger tube, as is the case with round tubes, but the large drop-shaped design that follows the round part of the tube Wall surface created, where the air passes and can continue to lead to an effective heat transfer.

Zusammenfassend ist also festzustellen, daß durch die Tropfenform des Rohres ein sehr guter Wärmeüber­gang bei relativ kleiner Oberfläche geschaffen wird und daß das erfindungsgemäß eingesetzte glatte Rohr zu einer guten Selbstreinigung des Oberflächenküh­lers mittels des auftretenden Kondensatwassers führt.In summary it can be stated that the drop shape of the tube creates a very good heat transfer with a relatively small surface area and that the smooth tube used according to the invention leads to good self-cleaning of the surface cooler by means of the condensate water that occurs.

Ein Ausführungsbeispiel der Erfindung wird nachfol­gend anhand der Zeichnung erläutert. In der Zeich­nung ist in

  • Fig. 1 schematisch ein Schnitt durch einen Ober­flächenkühler dargestellt und in
  • Fig. 2 ein Schnitt durch eines der Tauscherroh­re.
An embodiment of the invention is explained below with reference to the drawing. In the drawing is in
  • Fig. 1 shows schematically a section through a surface cooler and in
  • Fig. 2 shows a section through one of the exchanger tubes.

In Fig. 1 ist mit 1 ein Oberflächenkühler bezeich­net, der im wesentlichen aus einem Gehäuse 2 be­steht, mit einem Lufteinlaß 3 und einem Luftauslaß 4. In dem Gehäuse 2 ist ein Wärmetauscher ange­ordnet, dessen Kühlregister 5 durch eine Vielzahl parallel und übereinander angeordneter Rohre 7 ge­bildet wird, die als glatte Rohre mit Tropfenform im Querschnitt ausgebildet sind, wie dies deutlicher die Fig. 2 zeigt. Bei 9 ist in Fig. 1 der Einlaß für das dem Kühlregister 5 zuzuführende Kaltwasser und bei 10 der Auslaß des angewärmten Wassers er­kennbar, das das Kühlregister 5 durchströmt hat. Das dem Einlaß 9 zugeführte Wasser gelangt über ein Verteilerrohr 12, das an die erste Serie der Rohre 7 des Kühlregisters 5 angeschlossen ist, in das Kühlregister 5.In Fig. 1, 1 denotes a surface cooler, which essentially consists of a housing 2, with an air inlet 3 and an air outlet 4. A heat exchanger is arranged in the housing 2, the cooling register 5 of which is formed by a plurality of tubes 7 arranged in parallel and one above the other is formed, which are designed as smooth tubes with a teardrop shape in cross section, as shown more clearly in FIG. 2. The inlet for the cold water to be supplied to the cooling register 5 can be seen at 9 in FIG. 1, and the outlet of the heated water which has flowed through the cooling register 5 can be seen at 10. The water fed to the inlet 9 reaches the cooling register 5 via a distributor pipe 12 which is connected to the first series of pipes 7 of the cooling register 5.

Der Einlaß 3 für die Schmutzluft führt innerhalb des Gehäuses 2 zu einem Düsenraum 16, von dem aus die Luft nunmehr quer durch das Kühlregister 5 geführt wird, dann in einen Diffusorraum 17 gelangt und von dort zum Auslaß 4.The inlet 3 for the dirty air leads inside the housing 2 to a nozzle chamber 16, from which the air is now guided across the cooling register 5, then into a diffuser chamber 17 and from there to the outlet 4.

Fig. 2 zeigt, daß die Rohre 7 im Querschnitt gesehen Tropfenform aufweisen, wobei die runde Wandung 8 des Rohres 7 von der durch den Einlaß 3 zugeführten Luft angeströmt wird, die sich dann nach Umströmen des Rohres 7 ebenfalls tropfenförmig an die Außenseite den oberen, tropfenförmig gestalteten Bereiches 11 des Rohres 7 anlegt und damit eine große Tauscher­ fläche schafft.Fig. 2 shows that the tubes 7 have a teardrop shape when viewed in cross section, the round wall 8 of the tube 7 being flown by the air supplied through the inlet 3, which then, after flowing around the tube 7, also drops out to the outside of the upper, creates drop-shaped area 11 of the tube 7 and thus a large exchanger creates space.

Claims (1)

Oberflächenkühler als Luftkühler mit einem einen von einem Kühlmedium durchströmten Wärmetauscher aufnehmenden langgestreckten Gehäuse mit einem stirnseitigen Einlaß für warme Schmutzluft, einem gegenüberliegenden Auslaß für gekühlte Reinluft und ggf. einem Tauwasseraustritt, wobei das Kühlregi­ster des Wärmetauschers aus einem Rohrkühler be­steht und sich die das Kühlmedium führenden Rohre des Kühlregisters in Längsrichtung des Gehäuses erstrecken und gegenüber der Längsachse des Gehäu­ses vom Lufteinlaß zum Luftauslaß geneigt sind und das Gehäuse quer zur Längsachse ausfüllen, wobei der Raum unterhalb des Kühlreigisters sich vom Luft­einlaß aus verjüngt und der Raum oberhalb des Kühl­registers sich zum Luftauslaß hin vergrößert, da­durch gekennzeichnet, daß die das Kühlmedium führen­den Rohre (7) an ihrer Außenseite glatt ausgebildet sind und Tropfenform aufweisen, wobei der runde Wandteil (8) des Tropfenrohres (7) dem Lufteinlaß zugewandt ist und der spitz zulaufende Wandteil (11) des Tropfenrohres (7) in Abströmrichtung der Luft gerichtet ist.Surface cooler as an air cooler with an elongated housing receiving a heat exchanger through which a cooling medium flows, with an end inlet for warm dirty air, an opposite outlet for cooled clean air and possibly a condensation water outlet, the cooling register of the heat exchanger consisting of a tube cooler and the tubes carrying the cooling medium of the cooling register extend in the longitudinal direction of the housing and are inclined with respect to the longitudinal axis of the housing from the air inlet to the air outlet and fill the housing transversely to the longitudinal axis, the space below the cooling register tapering from the air inlet and the space above the cooling register increasing towards the air outlet, characterized in that the cooling medium leading tubes (7) are smooth on the outside and have a teardrop shape, the round wall part (8) of the drop tube (7) facing the air inlet and the tapered wall part (11) of the tro pipe tube (7) is directed in the outflow direction of the air.
EP88111993A 1987-08-04 1988-07-26 Surface cooler as an air cooler Withdrawn EP0303096A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3725797 1987-08-04
DE19873725797 DE3725797C1 (en) 1987-08-04 1987-08-04

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EP0303096A1 true EP0303096A1 (en) 1989-02-15

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EP88111993A Withdrawn EP0303096A1 (en) 1987-08-04 1988-07-26 Surface cooler as an air cooler

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000017592A2 (en) * 1998-05-14 2000-03-30 S.C. Romradiatoare S.A. Radiators including tubes with optimal hydro-dynamic cross section
JP2011052953A (en) * 2009-09-02 2011-03-17 Atlas Copco Energas Gmbh Compressed gas cooler for compressor
CN103591832A (en) * 2013-11-22 2014-02-19 茂名重力石化机械制造有限公司 Inclined-fin-tube heat exchanger

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3839132C1 (en) * 1987-08-04 1990-01-11 Komotzki, Michael, 5840 Schwerte, De Surface cooler as air cooler
DE3841180C1 (en) * 1988-12-07 1990-04-12 Komotzki, Michael, 5840 Schwerte, De Heat exchanger
DE3937153C1 (en) * 1989-11-08 1990-11-29 Fa. Michael Komotzki, 4600 Dortmund, De Surface-type air cooler - uses battery of smooth or ribbed pipes made of hard plastics material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE325832C (en) * 1918-07-25 1920-09-21 Norddeutsche Kuehlerfabrik G M Vehicle or aircraft radiator
DE8631320U1 (en) * 1986-11-22 1987-03-19 Komotzki, Michael, 5840 Schwerte, De

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE325832C (en) * 1918-07-25 1920-09-21 Norddeutsche Kuehlerfabrik G M Vehicle or aircraft radiator
DE8631320U1 (en) * 1986-11-22 1987-03-19 Komotzki, Michael, 5840 Schwerte, De

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000017592A2 (en) * 1998-05-14 2000-03-30 S.C. Romradiatoare S.A. Radiators including tubes with optimal hydro-dynamic cross section
WO2000017592A3 (en) * 1998-05-14 2000-08-03 S C Romradiatoare S A Radiators including tubes with optimal hydro-dynamic cross section
JP2011052953A (en) * 2009-09-02 2011-03-17 Atlas Copco Energas Gmbh Compressed gas cooler for compressor
CN103591832A (en) * 2013-11-22 2014-02-19 茂名重力石化机械制造有限公司 Inclined-fin-tube heat exchanger
CN103591832B (en) * 2013-11-22 2016-04-20 茂名重力石化机械制造有限公司 A kind of tiltedly finned tube exchanger

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Publication number Publication date
DE3725797C1 (en) 1988-08-25

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