EP1265046A2 - Rippe, Rohr und Wärmetauscher - Google Patents
Rippe, Rohr und Wärmetauscher Download PDFInfo
- Publication number
- EP1265046A2 EP1265046A2 EP02006435A EP02006435A EP1265046A2 EP 1265046 A2 EP1265046 A2 EP 1265046A2 EP 02006435 A EP02006435 A EP 02006435A EP 02006435 A EP02006435 A EP 02006435A EP 1265046 A2 EP1265046 A2 EP 1265046A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rib
- flow
- wave
- depressions
- tube
- 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.)
- Granted
Links
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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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
Definitions
- the present invention relates to a rib for use in one Pipe, in particular a flat tube, for a heat exchanger, in particular a capacitor.
- the rib according to the invention is preferably for a pipe intended for use in multi-flow condensers.
- Flat tubes which are used as Multi-channel pipes are formed, for example through the individual channels Refrigerant flows. These flat tubes are usually extruded profiles or welded pipes into which one essentially corrugated rib is inserted. Through this design this results in discrete flow channels that are separated from one another. Heat exchangers and condensers are commonly found between the flat tubes fins that increase the heat transfer Surface with regard to the air flowing over it serve and soldered together a heat transfer network of the Form heat exchanger or condenser.
- the condenser has a pair of spaced manifolds to absorb coolant vapor and to collect condensed Coolant as well as a variety of tubes that are hydraulically parallel run between the manifolds. Every tube stands with every one Collecting pipes in fluid connection and is elongated in cross section, the smaller dimension of the cross section essentially perpendicular to Direction of air flow through the condenser is aligned. Each of the Tubes also have a number of separate, hydraulically parallel ones Fluid flow paths.
- FIG 8 is a flat tube 20 described in EP-A-1 065 466 for Heat exchanger with a swirling device provided in the flat tube (Turbulator) 22 shown.
- the swirling device 22 has a substantially flat base 24 extending lengthways and crossways extends to the tube over a predetermined length.
- the swirling device also has 22 several laterally spaced and longitudinally extending grooves 26 for swirling the fluid in the Flat tube on.
- the grooves 26 have a length of approximately 2.5 to 7.0 mm in Flow direction. In addition, the grooves 26 are approximately laterally 0.76 mm apart.
- the laterally spaced apart Grooves 26 extend perpendicular to the plane of the base 24 in one alternating patterns so that a groove 26 extends upwards and the groove 26 lying to the side extends downward. Further are the individual grooves 26 alternately in the flow direction in opposite directions formed so that the end faces 28th two longitudinally adjacent grooves 26 are completely open. Thereby can flow fluid through the open end faces 28.
- This construction also allows for its heat transfer characteristics, especially with regard to the flow resistance, still much to be desired.
- the present invention has for its object an improved To provide facility or rib, in particular in one fluid-flow tube, preferably a flat tube, for one Heat exchanger and / or condenser is applicable to an improved To achieve efficiency. This task comes with the characteristics of the claims solved.
- the invention is based on the basic idea of the device (hereinafter also referred to as "rib") to be corrugated in the transverse direction, with depressions in the individual wave valleys and / or wave crests are provided.
- the corrugation of the rib forms together with a tube into which the fin is inserted is essentially several flow channels running parallel to one another. Through the wells arise between two parallel flow channels, which, however, are not directly adjacent, but through one in between horizontal flow channels are separated from one another, cross connections, through which some of the fluid is diverted. The rest, not redirected Part of the fluid flows through the respective flow channel further.
- the tube has at least one section, at least in sections rib of this type extending in the longitudinal direction of the tube, wherein the rib, as already described above, essentially in cross section is wavy, causing several in the tube substantially parallel flow channels are formed.
- the individual ribs are provided with recesses through which at least one of the flow channels with at least one other, not directly adjacent flow channel, d. H. the next but one flow channel, connected is.
- the wells are designed such that they do not completely block the individual flow channels, but instead the fluid can continue to flow through each of the flow channels.
- the rib according to the invention thus has a plurality of depressions, which as Possibility to cross-exchange the fluid flowing in the pipe.
- This cross-exchange takes place through a deepening, which in one Flow channel is provided and the two next to this flow channel adjoining adjacent flow channels.
- the shape of the recess i. H. their length and depth, depending on the application vary in certain areas. Usually the depth is of the depression about half the height of the flow channel. For that in the Fluid flowing through flow channels acts as a depression in each Flow channel as a kind of barrier; from the respective flow channel considered, it forms an indentation in the groove or shaft an elevation.
- the arrangement of the depressions along the individual flow channels to choose so that before each deepening or barrier in each flow channel a recess in at least one adjacent Flow channel is located, which is an opening or a passage to the next but one flow channel.
- the barrier in the flow channel acts as a flow resistance and passes part of the fluid through the depression in the adjacent flow channel in the next but one, thus lying next to the adjacent flow channel Flow channel around. The other part of the fluid flows over the barrier away through the same flow channel.
- the depressions are preferably in neighboring ones Flow channels alternately formed in opposite directions, d. H. the depressions are, for example, in a flow channel downward and in the adjacent flow channel are the depressions directed upwards. This allows the rib to be made endless become.
- the meander path extending in the longitudinal direction extends continuously and in the transverse direction over several flow channels. This prevents the mass flow density between the individual Flow channels vary widely.
- the inventive design of the tube with the wells in the rib is independent of the direction of flow of the fluid the same pressure loss in the pipe. This has the advantage that when Construction of a heat exchanger with the tubes according to the invention not must take into account the position of the rib.
- the depressions further be provided with at least one slot through which the Pressure loss of the fluid flowing in the flow channels is further reduced can be.
- the flowing Fluid doesn't just have the ability to pass through the wells formed cross connections in front of a recess serving as a barrier into the next but one flow channel or across the barrier of the flow channel, but there is also the possibility that the fluid through the slot directly into the adjacent flow channel can reach.
- a material exchange can thus be carried out with the rib according to the invention between the individual flow channels one equipped with the rib Realize tube in a particularly advantageous manner. In doing so the temperature differences in the individual flow channels flowing fluids greatly reduced by improved mixing.
- Another advantage of the rib according to the invention is given in that same internal pressure losses regardless of the direction of flow in the pipe of the flowing fluid occur. Furthermore, there is no unidirectional Cross flow, d. H. no different mass flow density in the respective flow channels. From a manufacturing point of view the rib can be made as an endless element, making it inexpensive Manufacturing is guaranteed.
- Fig. 1 shows a preferred application of the rib of the present in Combination with a tube 2, especially for one with fluid flowed through heat exchanger and / or condenser is suitable.
- the tube 2 is a flat tube, in particular as a welded flat tube.
- the pipe 2 essentially has a jacket 4 and a rib 6 incorporated therein which, at least in sections, preferably completely, in Pipe longitudinal direction extends.
- the rib 6 is essentially in cross section wavy, so that together with the outer jacket 4 a tube with a plurality of essentially parallel flow channels 8 arises. Every single shaft or groove works (Wellental / Wellenberg) of the rib 6 as a flow channel.
- the rib 6 has furthermore a plurality of depressions 10 through which at least one of the flow channels 8 with at least one other, not directly adjacent Flow channel 8 is connected.
- the wells 10 are so in the Rib 6 formed so that they do not completely complete the individual flow channels 8 block, but only represent flow barriers that allow a further flow of the fluid in the respective flow channel.
- the rib 6 is received in the outer jacket 4 of the tube 2 such that the individual shafts or grooves are separated from each other in a fluid-tight manner, to form the flow channels 8.
- two flow channels 8 are connected to each other by a intermediate flow channel 8 are spaced apart. This means that a recess 10 is a cross connection between one and the next but one, adjacent flow channel 8. Due to the large number of depressions 10 in the individual grooves the rib 6 creates a network of cross-connections that are optimal Mixing of the fluid flowing through the flow channels 8 is ensured.
- the recesses 10 in adjacent flow channels arranged such that viewed in the direction of flow of the fluid one depression 10-1 in a flow channel 8-1 10-2 are provided in at least one adjacent flow channel 8-2 is.
- the depression provided in the flow channel 8-1 acts 10-1 as a flow barrier, whereby part of the flowing in it Fluids in the next but one, next to the adjacent flow channel 8-2 lying flow channel 8-3 is diverted. The not redirected Part of the fluid continues to flow through the flow channel 8-1.
- the depressions in adjacent flow channels are preferred alternately formed in opposite directions, d. H. in the channel 8-1 all depressions 10-1 are formed downwards, while in adjacent channel 8-2 all recesses 10-2 formed upwards are.
- the depressions 10 can be repeated Pattern can be formed in the rib 6.
- the rib in the preferred embodiment shown provided with depressions 10 in a meandering sequence, the Meandering path in the longitudinal direction of the rib and in the transverse direction over several Flow channels 10 extends.
- Such a meander track is shown in Fig. 1 as dashed line 12. This prevents it from being effective Way that the mass flow density between the individual flow channels 8 varies widely.
- FIG. 2 shows the invention according to the invention already described with reference to FIG. 1 Rib 6 again without the outer jacket 4.
- the illustration 2 is the meandering sequence of the depressions 10 clearly visible.
- the respective Sectional images of the rib 6 together with the outer jacket 4 are shown in FIGS. 4 to 7 shown.
- the tube 2 described above with the rib 6 according to the invention is particularly suitable for installation in a heat exchanger or condenser, especially a multi-flow condenser.
- the rib 6 according to the invention in the tube 2 can be the efficiency of a heat exchanger or condenser improve significantly, which in particular on the improved mixing of the by the individual Flow channels flowing fluid is attributable.
- there are no unidirectional Cross currents, d. H. no different mass flow densities in the respective flow channels and an endless production of the rib provides an inexpensive manufacturing option.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
Description
- Fig. 1
- eine räumliche Ansicht der erfindungsgemäßen Rippe in einem teilweise geschnittenen Rohr;
- Fig. 2
- eine räumliche Ansicht der erfindungsgemäßen Rippe ähnlich Fig. 1, wobei darin verschiedene Schnittverläufe kenntlich gemacht sind;
- Fig. 3
- einen Teillängsschnitt entlang der Linie VII-VII von Fig. 2;
- Fig. 4
- einen Querschnitt entlang der Linie IV-IV von Fig. 2;
- Fig. 5
- einen Querschnitt entlang der Linie V-V von Fig. 2;
- Fig. 6
- einen Längsschnitt entlang der Linie VI-VI von Fig. 2;
- Fig. 7
- einen Längsschnitt entlang der Linie VII-VII von Fig. 2; und
- Fig. 8
- eine räumliche Ansicht eines Rohres mit Verwirbelungseinrichtung gemäß dem Stand der Technik.
Claims (29)
- Rippe (6), insbesondere für ein mit Fluid durchströmtes Rohr (2), die in Querrichtung gewellt ist, wodurch in Längsrichtung der Rippe (6) zueinander benachbarte Wellentäler und Wellenberge gebildet sind, wobei in den einzelnen Wellentälern und/oder Wellenbergen Vertiefungen (10) vorgesehen sind.
- Rippe (6) nach Anspruch 1, wobei durch eine Vertiefung (10) jeweils zwei Wellentäler miteinander verbunden sind, die durch einen dazwischen liegenden Wellenberg voneinander beabstandet sind.
- Rippe (6) nach Anspruch 1 oder 2, wobei durch eine Vertiefung (10) jeweils zwei Wellenberge miteinander verbunden sind, die durch ein dazwischen liegendes Wellental voneinander beabstandet sind.
- Rippe (6) nach einem der Ansprüche 1 bis 3, wobei die Vertiefungen (10) in jedem Wellental und Wellenberg vorgesehen sind.
- Rippe (6) nach einem der Ansprüche 1 bis 4, wobei die Vertiefungen (10) in einem sich wiederholenden Muster angeordnet sind.
- Rippe (6) nach einem der Ansprüche 1 bis 5, wobei die Vertiefungen (10) in benachbarten Wellentälern und Wellenbergen alternierend in entgegengesetzte Richtungen ausgebildet sind.
- Rippe (6) nach einem der Ansprüche 1 bis 6, wobei sich die Vertiefungen (10) im wesentlichen bis zur halben Höhe der Wellung erstrecken.
- Rippe (6) nach einem der Ansprüche 1 bis 7, wobei die Vertiefungen (10) in mäanderartiger Abfolge vorgesehen sind, wobei die Mäanderbahn in Längsrichtung vorgesehen ist und sich in Querrichtung über mehrere Wellentäler und Wellenberge erstreckt.
- Rippe (6) nach einem der Ansprüche 1 bis 8, wobei eine oder mehrere der Vertiefungen (10) Schlitze aufweisen, die eine Strömungsverbindung zwischen benachbarten Wellentälern und Wellenbergen bilden.
- Rohr (2) mit einer Rippe nach einem der Ansprüche 1 bis 9.
- Rohr (2), insbesondere für einen mit Fluid durchströmten Wärmetauscher und/ oder Kondensator, mit mindestens einer im Mantel (4) des Rohrs (2) vorgesehenen und zumindest abschnittsweise in Rohrlängsrichtung verlaufenden Rippe (6), wobei:a) die Rippe (6) im Querschnitt im wesentlichen wellenförmig ist, wodurch im Rohr (2) mehrere im wesentlichen parallel verlaufende Strömungskanäle (8) ausbildet sind;b) in der Rippe (6) Vertiefungen (10) vorgesehen sind, durch die mindestens einer der Strömungskanäle (8) mit mindestens einem weiteren, nicht direkt benachbarten Strömungskanal (8) verbunden ist; undc) unabhängig von den Vertiefungen (10) Fluid durch jeden einzelnen der Strömungskanäle (8) strömen kann.
- Rohr (2) nach Anspruch 10 oder 11, das als Flachrohr, insbesondere als geschweißtes Flachrohr, ausgebildet ist.
- Rohr (2) nach einem der Ansprüche 10 bis 12, wobei sich die Rippe (6) im wesentlichen entlang der gesamten Länge des Rohrs (2) erstreckt.
- Rohr (2) nach einem der Ansprüche 10 bis 13, wobei die Vertiefungen (10) in benachbarten Strömungskanälen (8) derart angeordnet sind, daß in Strömungsrichtung des Fluids vor einer Vertiefung (10-1) in einem Strömungskanal (8-1) jeweils eine Vertiefung (10-2) in mindestens einem dazu benachbarten Strömungskanal (8-2) vorgesehen ist, wodurch die im Strömungskanal (8-1) vorgesehene Vertiefung (10-1) als Strömungsbarriere zum Umleiten eines Teils des darin strömenden Fluids in den übernächsten, neben dem benachbarten Strömungskanal (8-2) liegenden Strömungskanal (8-3) dient.
- Wärmetauscher mit mindestens einem Rohr (2) nach einem der Ansprüche 10 bis 14.
- Kondensator mit mindestens einem Rohr (2) nach einem der Ansprüche 10 bis 14.
- Mehrflutiger Kondensator mit mindestens einem Rohr (2) nach einem der Ansprüche 10 bis 14.
- Verwendung eines Rohres (2) nach einem der Ansprüche 10 bis 14 für einen mehrflutigen Kondensator.
- Verfahren zum Herstellen einer Rippe (6), insbesondere für ein mit Fluid durchströmtes Rohr (2), mit den Schritten:a) Einbringen einer Wellung in Querrichtung eines Substrats, wodurch in Längsrichtung des Substrats zueinander benachbarte Wellentäler und Wellenberge ausgebildet werden; undb) Einbringen von Vertiefungen (10) in die einzelnen Wellentälern und/oder Wellenbergen, um benachbarte Wellentäler und/oder Wellenberge miteinander zu verbinden.
- Verfahren nach Anspruch 19, wobei in jedem der Wellentäler und Wellenberge Vertiefungen (10) ausgebildet werden.
- Verfahren nach Ansprüche 19 oder 20, wobei die Vertiefungen (10) gemäß Schritt b) in einem sich wiederholenden Muster ausgebildet werden.
- Verfahren nach einem der Ansprüche 19 bis 21, wobei die Vertiefungen (10) gemäß Schritt b) in benachbarten Wellentälern und Wellenbergen alternierend in entgegengesetzte Richtungen ausgebildet werden.
- Verfahren nach einem der Ansprüche 19 bis 22, wobei die Vertiefungen (10) gemäß Schritt b) im wesentlichen bis zur halben Höhe der Wellung ausgebildet werden.
- Verfahren nach einem der Ansprüche 19 bis 23, wobei die Vertiefungen (10) gemäß Schritt b) in mäanderartiger Abfolge ausgebildet werden, wobei die Mäanderbahn in Längsrichtung der Rippe (6) verläuft und sich in Querrichtung über mehrere Wellentäler und Wellenberge erstreckt.
- Verfahren nach einem der Ansprüche 19 bis 24, wobei eine oder mehrere der Vertiefungen (10) mit Schlitzen versehen werden, die eine Strömungsverbindung zwischen benachbarten Wellentälern und Wellenbergen bilden.
- Verfahren zum Herstellen eines Rohres (2), insbesondere für einen mit Fluid durchströmten Wärmetauscher und/oder Kondensator, mit den Schritten:a) Bereitstellen eines Rohrmantels (4);b) Bereitstellen mindestens einer zumindest abschnittsweise in Rohrlängsrichtung verlaufenden Rippe (6) nach einem der Ansprüche 19 bis 25; undc) Einbringen der Rippe (6) in den Rohrmantel (4), wobei durch die Wellentäler und Wellenberge im Rohr (2) mehrere im wesentlichen parallel verlaufende Strömungskanäle (8) ausgebildet werden, wobei mindestens einer der Strömungskanäle (8) mit mindestens einem weiteren, nicht direkt benachbarten Strömungskanal (8) durch mindestens eine der Vertiefungen (10) in Fluid-Verbindung steht und unabhängig von den Vertiefungen (10) Fluid durch jeden einzelnen der Strömungskanäle (8) strömen kann.
- Verfahren nach Anspruch 26, wobei die Rippe (6) in den Rohrmantel (4) eingebracht und der Rohrmantel (4) anschließend verschweißt wird.
- Verfahren nach Anspruch 26 oder 27, wobei die Vertiefungen (10) derart ausgebildet werden, daß jeweils zwei Strömungskanäle (8) miteinander verbunden werden, die durch einen dazwischen liegenden Strömungskanal (8) voneinander beabstandet sind.
- Verfahren nach einem der Ansprüche 26 bis 28, wobei das Ausbilden der Vertiefungen (10) derart in benachbarten Strömungskanälen (8) erfolgt, daß in Strömungsrichtung des Fluids vor einer Vertiefung (10-1) in einem Strömungskanal (8-1) jeweils eine Vertiefung (10-2) in mindestens einem dazu benachbarten Strömungskanal (8-2) vorgesehen ist, wodurch die im Strömungskanal (8-1) vorgesehene Vertiefung als Strömungsbarriere zum Umleiten des darin strömenden Fluids in den übernächsten, neben dem benachbarten Strömungskanal (8-2) liegenden Strömungskanal (8-3) dient.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10127724 | 2001-06-07 | ||
DE10127724 | 2001-06-07 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1265046A2 true EP1265046A2 (de) | 2002-12-11 |
EP1265046A3 EP1265046A3 (de) | 2003-04-02 |
EP1265046B1 EP1265046B1 (de) | 2005-11-23 |
Family
ID=7687554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02006435A Expired - Lifetime EP1265046B1 (de) | 2001-06-07 | 2002-03-22 | Rippe, Rohr und Wärmetauscher |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1265046B1 (de) |
AT (1) | ATE310934T1 (de) |
DE (2) | DE50205000D1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7044210B2 (en) | 2002-05-10 | 2006-05-16 | Usui Kokusai Sangyo Kaisha, Ltd. | Heat transfer pipe and heat exchange incorporating such heat transfer pipe |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10342241A1 (de) * | 2003-09-11 | 2005-04-07 | Behr Gmbh & Co. Kg | Wärmetauscher |
DE102019211969A1 (de) * | 2019-08-09 | 2021-02-11 | Mahle International Gmbh | Flachrohr und Kondensator mit Flachrohr |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0219974A2 (de) | 1985-10-02 | 1987-04-29 | Modine Manufacturing Company | Verflüssiger mit einen kleinen hydraulischen Durchmesser aufweisender Strömungsbahn |
EP1065466A2 (de) | 1999-07-01 | 2001-01-03 | Ford Motor Company | Flacher Wirbelerzeuger für ein Rohr und dessen Herstellung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR606572A (fr) * | 1925-02-24 | 1926-06-16 | Dispositif radiateur échangeur de température pour voitures automobiles et autres applications | |
FR1537101A (fr) * | 1967-07-11 | 1968-08-23 | Chausson Usines Sa | Organe perturbateur pour conduit d'échangeur thermique |
DE3615300A1 (de) * | 1986-05-06 | 1987-11-12 | Norsk Hydro As | Kuehlrohre, sowie verfahren und vorrichtung zu deren herstellung |
DE3915208A1 (de) * | 1989-05-10 | 1990-11-15 | Behr Gmbh & Co | Turbulenzeinlage |
JP3405997B2 (ja) * | 1991-10-23 | 2003-05-12 | 株式会社デンソー | インナーフィンおよびその製造方法 |
DE4403144C3 (de) * | 1994-02-02 | 2002-05-29 | Laengerer & Reich Gmbh & Co | Plattenwärmeaustauscher |
DE4404357C2 (de) * | 1994-02-11 | 1998-05-20 | Wieland Werke Ag | Wärmeaustauschrohr zum Kondensieren von Dampf |
DE19548495C2 (de) * | 1995-12-22 | 2000-04-20 | Valeo Klimatech Gmbh & Co Kg | Wärmetauscherblock für Wärmetauscher für Kraftfahrzeuge und Verfahren zu dessen Herstellung |
DE19813989A1 (de) * | 1998-03-28 | 1999-09-30 | Behr Gmbh & Co | Wärmetauscher |
-
2002
- 2002-03-22 EP EP02006435A patent/EP1265046B1/de not_active Expired - Lifetime
- 2002-03-22 DE DE50205000T patent/DE50205000D1/de not_active Expired - Lifetime
- 2002-03-22 AT AT02006435T patent/ATE310934T1/de not_active IP Right Cessation
- 2002-03-23 DE DE10213136A patent/DE10213136A1/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0219974A2 (de) | 1985-10-02 | 1987-04-29 | Modine Manufacturing Company | Verflüssiger mit einen kleinen hydraulischen Durchmesser aufweisender Strömungsbahn |
EP1065466A2 (de) | 1999-07-01 | 2001-01-03 | Ford Motor Company | Flacher Wirbelerzeuger für ein Rohr und dessen Herstellung |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7044210B2 (en) | 2002-05-10 | 2006-05-16 | Usui Kokusai Sangyo Kaisha, Ltd. | Heat transfer pipe and heat exchange incorporating such heat transfer pipe |
Also Published As
Publication number | Publication date |
---|---|
ATE310934T1 (de) | 2005-12-15 |
EP1265046A3 (de) | 2003-04-02 |
DE50205000D1 (de) | 2005-12-29 |
DE10213136A1 (de) | 2002-12-12 |
EP1265046B1 (de) | 2005-11-23 |
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