EP0301121A1 - Finned tube - Google Patents

Finned tube Download PDF

Info

Publication number
EP0301121A1
EP0301121A1 EP87111019A EP87111019A EP0301121A1 EP 0301121 A1 EP0301121 A1 EP 0301121A1 EP 87111019 A EP87111019 A EP 87111019A EP 87111019 A EP87111019 A EP 87111019A EP 0301121 A1 EP0301121 A1 EP 0301121A1
Authority
EP
European Patent Office
Prior art keywords
rib
finned tube
tube according
range
height
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
Application number
EP87111019A
Other languages
German (de)
French (fr)
Other versions
EP0301121B1 (en
Inventor
Manfred Dr.-Ing. Hage
Manfred Dipl.-Ing. Knab
Karl Dipl.-Ing. Noll
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wieland Werke AG
Original Assignee
Wieland Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8197168&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0301121(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wieland Werke AG filed Critical Wieland Werke AG
Priority to DE8787111019T priority Critical patent/DE3762920D1/en
Priority to EP19870111019 priority patent/EP0301121B1/en
Publication of EP0301121A1 publication Critical patent/EP0301121A1/en
Application granted granted Critical
Publication of EP0301121B1 publication Critical patent/EP0301121B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

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
    • F28F1/10—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
    • F28F1/26—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 being integral with the element
    • 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
    • F28D7/16—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 arranged in parallel spaced relation
    • 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
    • F28F1/006—Tubular elements; Assemblies of tubular elements with variable shape, e.g. with modified tube ends, with different geometrical features

Definitions

  • the invention relates to a finned tube according to the preamble of claim 1.
  • Finned tubes with the specified range of pitch t R of 1.60 to 3.90 mm (6.5 to 16 fins / inch) are known.
  • Finned tubes of this type with a fin height h R of about 10 mm are used in particular in air-cooled heat exchangers.
  • the use of these finned tubes in corrosive, erosive and contaminated media, such as occur in the chemical and petrochemical sector, is already ruled out because the grooves between the fins would easily be filled with deposits and the performance of the finned tube as a heat transfer element would be significantly impaired .
  • the invention is therefore based on the object of specifying a finned tube which retains good heat transfer properties even when used in corrosive, erosive and contaminated media.
  • the object is achieved by the three characterizing features a) to c) of claim 1.
  • the rib cross-sectional area A R is measured in the longitudinal direction of the tube). This on the one hand proposes an open rib structure that counteracts contamination of the grooves between the ribs, and on the other hand provides a relatively solid rib that is resistant to the attacks of the corrovive and erosive media.
  • the rib height h R is preferably in the range 0.8 mm ⁇ h R ⁇ 1.7 mm, in particular in the range 1.0 mm ⁇ h R ⁇ 1.5 mm.
  • the values for the surface ratio of the ribbed outer surface A0 / smooth outer surface A 0, smooth as a function of the fin pitch t R lie between the values of the equations.
  • the smooth tube has an outer diameter which corresponds to the fin diameter of the finned tube.
  • the fins taper towards the tip of the fin.
  • a rib width B> 0.3 mm at the tip of the rib is preferred.
  • the finned tube For use in shell-and-tube heat exchangers, it is recommended that the finned tube have smooth ends, the diameter of which corresponds approximately to the fin diameter.
  • Fig. 3 shows a finned tube 1 with integral fins 2, which run helically on the outside of the tube.
  • the finned tubes 1 are produced in a manner known per se by the finned tube rolling method (cf. for example US Pat. No. 3,327,512).
  • the ribs 2 taper towards the tip of the rib, the bottom of the groove between the ribs 2 is rounded.
  • the rib tube sizes are explained: rib pitch t R (distance from rib center to rib center), rib height h R , rib cross-sectional area A R (hatched in Fig.
  • the finned tube 1 has a smooth end 1 ⁇ , the diameter of which corresponds to the fin diameter d R.
  • condensation performance of the condenser equipped with finned tubes according to the invention was at least a factor of 2 higher than the condensation performance of the condenser provided with standard finned tubes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

1. Finned tube (1), particularly for heat exchangers, with helically extending or annular fins (2) formed integrally on the outer surface of the tube wherein the fins (2) are defined by the dimensions fin spacing tR , fin height hR and cross-sectional area of the fin AR , wherein the spacing tR is in the range of 1.6 to 3.9 mm (6.5 to 16 fins per inch) and the ratio of cross-sectional area of the fin AR to fin height hR is greater than 0.5 mm, wherein a) the fin height hR is in the range of 0.2 mm to 2.0 mm ; b) the ratio of fin spacing tR to fin height hR is in the range of 1 to 15.

Description

Die Erfindung betrifft ein Rippenrohr nach dem Oberbegriff des Anspruchs 1.
Es sind Rippenrohre mit dem angegebenen Bereich der Teilung tR von 1,60 bis 3,90 mm (6,5 bis 16 Rippen/Zoll) bekannt. Rippenrohre dieser Art mit einer Rippenhöhe hR von etwa über 10 mm werden insbesondere in luftgekühlten Wärmeaus­tauschern eingesetzt.
Eine Verwendung dieser Rippenrohre bei korrosiven, erosiven und verunreinigten Medien, wie sie beispielsweise im Bereich der Chemie und Petrochemie auftreten, ist bereits deshalb ausgeschlossen, weil die Nuten zwischen den Rippen leicht mit Ablagerungen angefüllt würden und damit die Leistung des Rippenrohres als Wärmeübertragungselement wesentlich beein­trächtigt würde.
Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Rippen­rohr anzugeben, das auch bei der Verwendung in korrosiven, erosiven und verunreinigten Medien gute Wärmeübertragungseigen­schaften behält.
Die Aufgabe wird erfindungsgemäß durch die drei kennzeichnenden Merkmale a) bis c) des Anspruchs 1 gelöst. (Die Rippenquerschnitts­fläche AR wird dabei in Rohrlängsrichtung gemessen).
Damit wird einerseits eine offene Rippenstruktur vorgeschlagen, die einer Verschmutzung der Nuten zwischen den Rippen entgegen­wirkt, und andererseits wird eine relativ massive Rippe zur Ver­fügung gestellt, die widerstandsfähig ist gegen die Angriffe der korroviven und erosiven Medien.The invention relates to a finned tube according to the preamble of claim 1.
Finned tubes with the specified range of pitch t R of 1.60 to 3.90 mm (6.5 to 16 fins / inch) are known. Finned tubes of this type with a fin height h R of about 10 mm are used in particular in air-cooled heat exchangers.
The use of these finned tubes in corrosive, erosive and contaminated media, such as occur in the chemical and petrochemical sector, is already ruled out because the grooves between the fins would easily be filled with deposits and the performance of the finned tube as a heat transfer element would be significantly impaired .
The invention is therefore based on the object of specifying a finned tube which retains good heat transfer properties even when used in corrosive, erosive and contaminated media.
The object is achieved by the three characterizing features a) to c) of claim 1. (The rib cross-sectional area A R is measured in the longitudinal direction of the tube).
This on the one hand proposes an open rib structure that counteracts contamination of the grooves between the ribs, and on the other hand provides a relatively solid rib that is resistant to the attacks of the corrovive and erosive media.

Die Rippenhöhe hR liegt vorzugsweise im Bereich 0,8 mm < hR < 1,7 mm, insbesondere im Bereich 1,0 mm < hR < 1,5 mm. Nach einer besonderen Ausführungsform der Erfindung liegen die Werte für das Verhältnis tR / hR im Bereich 1,2 < tR / hR < 5, insbesondere im Bereich 1,3 < tR / hR < 3,2. Es empfiehlt sich, die Werte für die Rippenquerschnittsfläche AR als Funktion der Rippenhöhe hR zwischen den Werten der Gleichungen AR = 0,5 mm · hR und AR = 0,7 mm² + 1 mm · hR zu wählen (vgl. das Diagramm in Fig. 1).
Nach einer weiteren Ausführungsform der Erfindung liegen die Werte für das Oberflächenverhältnis der berippten Außen-­Oberfläche A₀/ glatter Außen-Oberfläche A0, glatt als Funktion der Rippenteilung tR zwischen den Werten der Gleichungen. A₀ / A0, glatt = 1,05 und A₀ / A0, glatt = 1,49 + 0,214 · (tR - 3,97)², vgl. Fig. 2 mit tR in mm. Bei diesem Vergleich hat das Glattrohr einen Außendurchmesser, der dem Rippendurchmesser des Rippenrohres entspricht.The rib height h R is preferably in the range 0.8 mm <h R <1.7 mm, in particular in the range 1.0 mm <h R <1.5 mm. According to a special embodiment of the invention, the values for the ratio t R / h R are in the range 1.2 <t R / h R <5, in particular in the range 1.3 <t R / h R <3.2. It is advisable to choose the values for the rib cross-sectional area A R as a function of the rib height h R between the values of the equations A R = 0.5 mm · h R and A R = 0.7 mm² + 1 mm · h R (cf. the diagram in Fig. 1).
According to a further embodiment of the invention, the values for the surface ratio of the ribbed outer surface A₀ / smooth outer surface A 0, smooth as a function of the fin pitch t R, lie between the values of the equations. A₀ / A 0, smooth = 1.05 and A₀ / A 0, smooth = 1.49 + 0.214 · (t R - 3.97) ², cf. Fig. 2 with t R in mm. In this comparison, the smooth tube has an outer diameter which corresponds to the fin diameter of the finned tube.

Für die Herstellung mittels des üblichen Rippenrohr-Walzver­fahrens empfiehlt es sich, daß die Rippen zur Rippenspitze hin konisch zulaufen. Eine Rippenbreite B > 0,3 mm an der Rippen­spitze ist dabei bevorzugt.For production using the usual finned tube rolling process, it is recommended that the fins taper towards the tip of the fin. A rib width B> 0.3 mm at the tip of the rib is preferred.

Für die Verwendung in Rohrbündelwärmeaustauschern empfiehlt es sich, wenn das Rippenrohr glatte Enden aufweist, deren Durch­messer in etwa dem Rippendurchmesser entspricht.For use in shell-and-tube heat exchangers, it is recommended that the finned tube have smooth ends, the diameter of which corresponds approximately to the fin diameter.

Für die Verwendung des Rippenrohres in korrosiven bzw. erosiven Medien besteht es vorzugsweise aus einem korrosions­beständigen metallischen Werkstoff, wie etwa Stahl, hochlegiertem Stahl oder Titan.
Die Verwendung des erfindungsgemäßen Rippenrohres als Wärme­austauscher sowohl für Kondensation und Verdampfung als auch Wärmeübertragung ohne Phasenwechsel (auf der Rohraußenseite) von korrosiven und erosiven Stoffen, die einen kritischen Druck p krit < 200 bar haben, ist bevorzugt. Wegen des gün­stigen Oberflächenverhältnisses sind diese Rippenrohre eben­falls ausgezeichnet für den Einsatz in verunreinigten Prozeß­strömen geeignet.
Als Stoffe dieser Art kommen insbesondere Kohlenwasserstoff­gemische aus der Chemie oder Petrochemie in Frage, beispiels­weise Äthylen / Propylen, n-Pentan/Para-Xylol.
Die Erfindung wird an Hand der folgenden Ausführungsbeispiele näher erläutert. Es zeigt

  • Fig. 3 einen Längsschnitt durch ein erfindungsgemäßes Rippenrohr,
  • Fig. 4 in vergößertem Maßstab einen Teillängsschnitt durch ein erfindungsgemäßes Rippenrohr,
  • Fig. 5 ein Foto eines Längsschliffes eines erfindungs­gemäßen Rippenrohres,
  • Fig. 6 den Einsatz erfindungsgemäßer Rippenrohre in einem Rohrbündel.
For the use of the finned tube in corrosive or erosive media, it preferably consists of a corrosion-resistant metallic material, such as steel, high-alloy steel or titanium.
The use of the finned tube according to the invention as a heat exchanger for condensation and evaporation as well as heat transfer without phase change (on the outside of the tube) of corrosive and erosive substances which have a critical pressure p crit <200 bar is preferred. Because of the favorable surface ratio, these finned tubes are also ideally suited for use in contaminated process streams.
Suitable substances of this type are, in particular, hydrocarbon mixtures from chemistry or petrochemistry, for example ethylene / propylene, n-pentane / para-xylene.
The invention is explained in more detail using the following exemplary embodiments. It shows
  • 3 shows a longitudinal section through a finned tube according to the invention,
  • 4 on an enlarged scale a partial longitudinal section through a finned tube according to the invention,
  • 5 shows a photo of a longitudinal section of a finned tube according to the invention,
  • Fig. 6 shows the use of finned tubes according to the invention in a tube bundle.

Die Fig. 3 zeigt ein Rippenrohr 1 mit integralen Rippen 2, die auf der Rohraußenseite schraubenlinienförmig umlaufen. Die Herstellung der Rippenrohre 1 erfolgt in an sich be­kannter Weise nach dem Rippenrohrwalzverfahren (vgl. bei­spielsweise US-PS 3.327.512). Wie Fig. 4 deutlich zeigt, laufen die Rippen 2 konisch zur Rippenspitze zu, der Nuten­grund zwischen den Rippen 2 ist ausgerundet.
An Hand der Fig. 3/4 sind die Rippenrohrgrößen erläutert: Rippenteilung tR (Abstand von Rippenmitte zur Rippenmitte), Rippenhöhe hR, Rippenquerschnittfläche AR (in Fig. 4 schraf­fiert), Rippenbreite B an der Rippenspitze, Radius R im Nuten­grund, Rippendurchmesser dR, Innendurchmesser des Rohres (im berippten Teil) di.
Aus Fig. 3 geht deutlich hervor, daß das Rippenrohr 1 ein glattes Ende 1ʹ aufweist, dessen Durchmesser dem Rippendurch­messer dR entspricht.Fig. 3 shows a finned tube 1 with integral fins 2, which run helically on the outside of the tube. The finned tubes 1 are produced in a manner known per se by the finned tube rolling method (cf. for example US Pat. No. 3,327,512). As clearly shown in FIG. 4, the ribs 2 taper towards the tip of the rib, the bottom of the groove between the ribs 2 is rounded.
3/4 the rib tube sizes are explained: rib pitch t R (distance from rib center to rib center), rib height h R , rib cross-sectional area A R (hatched in Fig. 4), rib width B at the rib tip, radius R in the groove base, Rib diameter d R , inside diameter of the tube (in the finned part) d i .
From Fig. 3 it is clear that the finned tube 1 has a smooth end 1ʹ, the diameter of which corresponds to the fin diameter d R.

Beispiel:Example:

Es wurden Rippenrohre 1 aus Edelstahl 1,4571 mit 11,2 Rippen/Zoll (tR = 2,27 mm) mit den Abmessungen nach fol­gender Tabelle hergestellt: Tabelle:
Rippenteilung tR      2,27 mm
Rippenhöhe hR      1,39 mm
Rippenquerschnittsfläche AR      0,86 mm²
Rippenbreite (an der Rippenspitze) B      0,34 mm
Radius R im Nutengrund      0,92 mm
Rippendurchmesser dR      18,80 mm
Innendurchmesser di
(berippter Teil)      14,30 mm
Finned tubes 1 were made of stainless steel 1.4571 with 11.2 fins / inch (t R = 2.27 mm) with the dimensions according to the following table: Table:
Rib pitch t R 2.27 mm
Rib height h R 1.39 mm
Rib cross-sectional area A R 0.86 mm²
Rib width (at the tip of the rib) B 0.34 mm
Radius R in the groove base 0.92 mm
Rib diameter d R 18.80 mm
Inner diameter d i
(ribbed part) 14.30 mm

Damit ist tR/hR = 1,63; AR/hR = 0,62 mm.
Ein Längsschliff durch die so hergestellten Rohre ist mit dem Foto nach Fig. 5 gezeigt die Rohrinnenseite ist glatt. Erfindungsgemäße Rippenrohre und Vergleichsrippenrohre (Standardrippenrohre mit 19 Rippen/Zoll und demselben Rippendurchmesser dR) wurden jeweils in einem Rohrbündel-­Kondensator 3 nach Fig. 6 eingesetzt (also Wasser im Rohr, kondensierendes Kohlenwasserstoffgemisch - CnHm-Gemisch - ­außen).Thus t R / h R = 1.63; A R / h R = 0.62 mm.
A longitudinal grinding through the pipes produced in this way is shown in the photo according to FIG. 5, the inside of the pipe is smooth. Finned tubes and comparison finned tubes according to the invention (standard finned tubes with 19 fins / inch and the same fin diameter d R ) were each used in a tube bundle condenser 3 according to FIG. 6 (i.e. water in the tube, condensing hydrocarbon mixture - C n H m mixture - outside).

Es zeigte sich, daß die Kondensationsleistung des mit erfindungs­gemäßen Rippenrohren bestückten Kondensators mindestens um den Faktor 2 höher lag als die Kondensationsleistung des mit Standard-­Rippenrohren versehenen Kondensators.It was found that the condensation performance of the condenser equipped with finned tubes according to the invention was at least a factor of 2 higher than the condensation performance of the condenser provided with standard finned tubes.

Claims (13)

1. Rippenrohr (1), insbesondere für Wärmeaustauscher oder dgl., mit auf der Rohraußenseite schraubenlinienförmig oder ringförmig umlaufenden, integralen Rippen (2), die durch die Größen Teilung tR, Rippenhöhe hR und Rippenquerschnittsfläche AR beschrieben werden und die eine Teilung tR von 1,60 bis 3,90 mm (6,5 bis 16 Rippen/Zoll) aufweisen, gekennzeichnet durch folgende Merkmale: a) die Rippenhöhe hR liegt in folgendem Bereich:
0,2 mm < hR < 2,0 mm; b) das Verhältnis Rippenteilung tR / Rippenhöhe hR liegt in folgendem Bereich:
1 < tR/hR < 15; c) das Verhältnis Rippenquerschnittsfläche AR / Rippenhöhe hR beträgt:
AR / hR > 0,5 mm. 1. finned tube (1), in particular for heat exchangers or the like. Will be described with on the tube outside helically or annularly extending, integral ribs (2) by the sizes spacing t R, fin height h R and rib cross-sectional area A R and a pitch t R from 1.60 to 3.90 mm (6.5 to 16 ribs / inch), characterized by the following features: a) The rib height h R is in the following range:
0.2 mm <h R <2.0 mm; b) the ratio of rib pitch t R / rib height h R is in the following range:
1 <t R / h R <15; c) the ratio of rib cross-sectional area A R / rib height h R is:
A R / h R > 0.5 mm. 2. Rippenrohr nach Anspruch 1,
dadurch gekennzeichnet,
daß die Rippenhöhe hR im Bereich 0,8 mm < hR < 1,7 mm liegt.2. finned tube according to claim 1,
characterized,
that the rib height h R is in the range 0.8 mm <h R <1.7 mm. 3. Rippenrohr nach Anspruch 2,
dadurch gekennzeichnet,
daß die Rippenhöhe hR im Bereich 1,0 mm < hR < 1,5 mm liegt.3. finned tube according to claim 2,
characterized,
that the rib height h R is in the range of 1.0 mm <h R <1.5 mm. 4. Rippenrohr nach einem oder mehreren der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß das Verhältnis tR / hR im Bereich 1,2 < tR / hR < 5 liegt.4. finned tube according to one or more of claims 1 to 3,
characterized,
that the ratio t R / h R is in the range 1.2 <t R / h R <5. 5. Rippenrohr nach Anspruch 4,
dadurch gekennzeichnet,
daß das Verhältnis tR / hR im Bereich 1,3 < tR / hR < 3,2 liegt.5. finned tube according to claim 4,
characterized,
that the ratio t R / h R is in the range 1.3 <t R / h R <3.2. 6. Rippenrohr nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet,
daß die Werte für die Rippenquerschnittsfläche AR als Funk­tion der Rippenhöhe hR zwischen den Werten der Gleichungen AR = 0,5 mm · hR und AR = 0,7 mm² + 1 mm · hR liegen (Fig. 1)6. finned tube according to one or more of claims 1 to 5, characterized in
that the values for the rib cross-sectional area A R as a function of the rib height h R lie between the values of the equations A R = 0.5 mm · h R and A R = 0.7 mm² + 1 mm · h R (Fig. 1) 7. Rippenrohr nach einem oder mehreren der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß die Werte für das Oberflächenverhältnis der berippten Außenoberfläche A₀ / glatte Außenoberfläche A₀,glatt als Funktion der Rippenteilung tR zwischen den Werten der Gleichungen
A₀ / A₀, glatt = 1,05 und A₀ / A0, glatt = 1,49 + 0,214. (tR - 3,97)² liegen (Fig. 2 mit tR in mm).7. finned tube according to one or more of claims 1 to 6,
characterized,
that the values for the surface ratio of the ribbed outer surface A₀ / smooth outer surface A₀, smooth as a function of the rib pitch t R between the values of the equations
A₀ / A₀, smooth = 1.05 and A₀ / A 0, smooth = 1.49 + 0.214. (t R - 3.97) 2 (Fig. 2 with t R in mm). 8. Rippenrohr nach einem oder mehreren der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß die Rippen (2) zur Rippenspitze hin konisch zulaufen.8. finned tube according to one or more of claims 1 to 6,
characterized,
that the ribs (2) taper towards the tip of the rib. 9. Rippenrohr nach Anspruch 8,
dadurch gekennzeichnet,
daß die an der Rippenspitze gemessene Rippenbreite B > 0,3 mm beträgt.9. finned tube according to claim 8,
characterized,
that the rib width B measured at the tip of the rib is> 0.3 mm. 10. Rippenrohr nach einem oder mehreren der Ansprüche 1 bis 9,
dadurch gekennzeichnet,
daß es glatte Enden (1ʹ) aufweist, deren Durchmesser in etwa dem Rippendurchmesser dR entspricht.10. finned tube according to one or more of claims 1 to 9,
characterized,
that it has smooth ends (1ʹ) whose diameter corresponds approximately to the rib diameter d R. 11. Rippenrohr nach einem oder mehreren der Ansprüche 1 bis 10,
dadurch gekennzeichnet,
daß es aus einem korrosionsbeständigen, metallischen Werk­stoff, wie etwa Stahl, hochlegiertem Stahl oder Titan, be­steht.11. finned tube according to one or more of claims 1 to 10,
characterized,
that it consists of a corrosion-resistant, metallic material such as steel, high-alloy steel or titanium. 12. Verwendung eines Rippenrohres nach einem oder mehreren der Ansprüche 1 bis 11 als Wärmeaustauscher für Konden­sation, Verdampfung oder Wärmeübergang ohne Phasenwechsel von korrosiven und erosiven Stoffen, die einen kritischen Druck pkrit. < 200 bar haben.12. Use of a finned tube according to one or more of claims 1 to 11 as a heat exchanger for condensation, evaporation or heat transfer without phase change of corrosive and erosive substances which have a critical pressure p crit. <200 bar. 13. Verwendung eines Rippenrohres als Wärmeaustauscher für Kohlenwasserstoffgemische für den Zweck nach Anspruch 12.13. Use of a finned tube as a heat exchanger for hydrocarbon mixtures for the purpose of claim 12.
EP19870111019 1987-07-30 1987-07-30 Finned tube Revoked EP0301121B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8787111019T DE3762920D1 (en) 1987-07-30 1987-07-30 RIB TUBE.
EP19870111019 EP0301121B1 (en) 1987-07-30 1987-07-30 Finned tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19870111019 EP0301121B1 (en) 1987-07-30 1987-07-30 Finned tube

Publications (2)

Publication Number Publication Date
EP0301121A1 true EP0301121A1 (en) 1989-02-01
EP0301121B1 EP0301121B1 (en) 1990-05-23

Family

ID=8197168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870111019 Revoked EP0301121B1 (en) 1987-07-30 1987-07-30 Finned tube

Country Status (2)

Country Link
EP (1) EP0301121B1 (en)
DE (1) DE3762920D1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0701100A1 (en) * 1994-09-12 1996-03-13 Carrier Corporation Heat transfer tube
EP0843318A1 (en) * 1996-11-19 1998-05-20 Transnucléaire Spline arrangement for externally cooling containers for radioactive material
EP1184634A1 (en) * 2000-08-31 2002-03-06 Carrier Corporation A refrigerated merchandiser system and method of operating a refrigerated merchandiser system
WO2005068927A1 (en) * 2004-01-07 2005-07-28 Dow Global Technologies Inc. Method of manufacturing heat transfer tube
FR2872956A1 (en) * 2004-07-12 2006-01-13 Cogema Logistics Sa EXTERNAL HEAT EXHAUST DEVICE FOR PACKAGING FOR THE STORAGE AND / OR TRANSPORT OF NUCLEAR MATERIALS
EP1647794A1 (en) * 2004-10-14 2006-04-19 Nova Chemicals (International) S.A. External ribbed furnace tubes
CN104810068A (en) * 2014-01-26 2015-07-29 上海核工程研究设计院 Pressure container with fins on outer wall surface
WO2021021553A1 (en) * 2019-07-30 2021-02-04 Carrier Corporation A refrigeration cabinet system and a control method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384154A (en) * 1956-08-30 1968-05-21 Union Carbide Corp Heat exchange system
US3600922A (en) * 1969-03-05 1971-08-24 Carrier Corp Manufacture of integrally finned tubing
DE2043459A1 (en) * 1970-09-02 1972-03-09 Battelle Institut E V Heat transfer tube - for steam condensation
DE2119345A1 (en) * 1971-04-21 1972-11-02 R. & G. Schmöle Metallwerke, 575OMenden Finned tube - fin dimensions ensure optimum heat conduction at minimum material usage
DE2303192A1 (en) * 1972-01-27 1973-08-09 Universal Oil Prod Co FIBER TUBE AND THE METHOD AND DEVICE FOR ITS PRODUCTION
EP0102407A1 (en) * 1982-09-03 1984-03-14 Wieland-Werke Ag Finned tube with internal projections and method and apparatus for its manufacture
EP0133801A2 (en) * 1983-08-04 1985-03-06 Uop Inc. Finned heat exchanger tubes and method and apparatus for making same
US4546819A (en) * 1984-02-10 1985-10-15 Amtrol Inc. Double wall heat exchanger

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384154A (en) * 1956-08-30 1968-05-21 Union Carbide Corp Heat exchange system
US3600922A (en) * 1969-03-05 1971-08-24 Carrier Corp Manufacture of integrally finned tubing
DE2043459A1 (en) * 1970-09-02 1972-03-09 Battelle Institut E V Heat transfer tube - for steam condensation
DE2119345A1 (en) * 1971-04-21 1972-11-02 R. & G. Schmöle Metallwerke, 575OMenden Finned tube - fin dimensions ensure optimum heat conduction at minimum material usage
DE2303192A1 (en) * 1972-01-27 1973-08-09 Universal Oil Prod Co FIBER TUBE AND THE METHOD AND DEVICE FOR ITS PRODUCTION
EP0102407A1 (en) * 1982-09-03 1984-03-14 Wieland-Werke Ag Finned tube with internal projections and method and apparatus for its manufacture
EP0133801A2 (en) * 1983-08-04 1985-03-06 Uop Inc. Finned heat exchanger tubes and method and apparatus for making same
US4546819A (en) * 1984-02-10 1985-10-15 Amtrol Inc. Double wall heat exchanger

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0701100A1 (en) * 1994-09-12 1996-03-13 Carrier Corporation Heat transfer tube
EP0843318A1 (en) * 1996-11-19 1998-05-20 Transnucléaire Spline arrangement for externally cooling containers for radioactive material
FR2756090A1 (en) * 1996-11-19 1998-05-22 Transnucleaire GRID DEVICE FOR EXTERNAL COOLING OF CONTAINERS FOR RADIOACTIVE MATERIALS
EP1184634A1 (en) * 2000-08-31 2002-03-06 Carrier Corporation A refrigerated merchandiser system and method of operating a refrigerated merchandiser system
WO2005068927A1 (en) * 2004-01-07 2005-07-28 Dow Global Technologies Inc. Method of manufacturing heat transfer tube
FR2872956A1 (en) * 2004-07-12 2006-01-13 Cogema Logistics Sa EXTERNAL HEAT EXHAUST DEVICE FOR PACKAGING FOR THE STORAGE AND / OR TRANSPORT OF NUCLEAR MATERIALS
WO2006016082A1 (en) * 2004-07-12 2006-02-16 Tn International External heat-removal device for packaging designed for storing and/or transporting nuclear materials
EP1647794A1 (en) * 2004-10-14 2006-04-19 Nova Chemicals (International) S.A. External ribbed furnace tubes
CN104810068A (en) * 2014-01-26 2015-07-29 上海核工程研究设计院 Pressure container with fins on outer wall surface
WO2021021553A1 (en) * 2019-07-30 2021-02-04 Carrier Corporation A refrigeration cabinet system and a control method thereof

Also Published As

Publication number Publication date
DE3762920D1 (en) 1990-06-28
EP0301121B1 (en) 1990-05-23

Similar Documents

Publication Publication Date Title
DE69200089T2 (en) Heat transfer tube.
DE3048959C2 (en) Method and device for producing a finned tube for heat exchangers or the like.
DE2903079C2 (en) Heat exchanger tube for a water spray plate evaporator and method for its manufacture
DE69401731T2 (en) Heat exchanger tube
DE4404357C1 (en) Heat exchange core for condensing vapour (steam)
DE2053544C3 (en) Tube bundle for falling film evaporators for distilling liquids
DE69300031T2 (en) Heat exchanger tube.
DE4020592C2 (en) Direct current type heat exchangers for vehicles
DE69432234T2 (en) Finned tube heat exchanger
EP2253922B1 (en) Metallic heat exchange pipe
DE2310315A1 (en) HEAT EXCHANGER TUBE AND METHOD OF ITS MANUFACTURING
EP1182416A2 (en) Heat exchanger tube with inner offset fins with variable height
EP0301121B1 (en) Finned tube
DE2244024A1 (en) TUBE OR PLATE-SHAPED MATERIAL FOR HEAT TRANSFER DURING LIQUIDS BOILING
EP0102407B1 (en) Finned tube with internal projections and method and apparatus for its manufacture
DE2705178A1 (en) HEAT EXCHANGER
EP0681930A1 (en) Tread profile
DE3616682A1 (en) HEAT EXCHANGER AND USE OF THE SAME IN AN OXYGENATOR
DE10255487A1 (en) Heat exchanger
EP3465055B1 (en) Heat exchanger tube
DE102011121436A1 (en) Condenser tubes with additional flank structure
DE2043459A1 (en) Heat transfer tube - for steam condensation
DE10210016B9 (en) Heat exchange tube with a ribbed inner surface
DE3815095A1 (en) HEAT EXCHANGER
DE3208838C2 (en) Heat exchanger

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19870730

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT SE

EL Fr: translation of claims filed
GBC Gb: translation of claims filed (gb section 78(7)/1977)
17Q First examination report despatched

Effective date: 19890531

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19900523

Ref country code: SE

Effective date: 19900523

REF Corresponds to:

Ref document number: 3762920

Country of ref document: DE

Date of ref document: 19900628

R20 Corrections of a patent specification

Effective date: 19900609

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19900824

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: H.D. EICHELBERG & CO. GESELLSCHAFT MIT BESCHRAENKT

Effective date: 19910225

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930730

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940613

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19940728

Year of fee payment: 8

REG Reference to a national code

Ref country code: GB

Ref legal event code: 728C

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950106

Year of fee payment: 8

REG Reference to a national code

Ref country code: GB

Ref legal event code: 728A

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19950704

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Free format text: 950704

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO