EP0942250A1 - Echangeur de chaleur cryogénique - Google Patents

Echangeur de chaleur cryogénique Download PDF

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Publication number
EP0942250A1
EP0942250A1 EP98810197A EP98810197A EP0942250A1 EP 0942250 A1 EP0942250 A1 EP 0942250A1 EP 98810197 A EP98810197 A EP 98810197A EP 98810197 A EP98810197 A EP 98810197A EP 0942250 A1 EP0942250 A1 EP 0942250A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
tubes
outlet
exchanger according
inlet manifold
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Withdrawn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
EP98810197A
Other languages
German (de)
English (en)
Inventor
Hans Bieri
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.)
Romabau AG
Original Assignee
Romabau 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
Application filed by Romabau AG filed Critical Romabau AG
Priority to EP98810197A priority Critical patent/EP0942250A1/fr
Publication of EP0942250A1 publication Critical patent/EP0942250A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28D7/02—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 helically coiled
    • F28D7/024—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 helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration

Definitions

  • Known heat exchangers for use at deep Temperatures are used as plate heat exchangers designed with ribbed panels.
  • the plates and ribs are made of a good heat conductor Material such as aluminum or copper.
  • the individual rib plates or rib channel walls are soldered together or welded.
  • For the manufacture of such heat exchangers have numerous soldered joints or be welded. The effort for this is relatively large, because the tightness of the connections even when they occur of higher pressures and pressure differences during operation must be guaranteed. So that the plates are under such pressures and pressure differences are not excessive deform, they must be relatively stiff and therefore voluminous be.
  • the object of the invention is a To provide cryogenic heat exchangers, the can be produced with the least possible effort and of small dimensions and low pressure drops has the highest possible heat exchange performance. This is also why pressure losses are in the low temperature range harmful because the power loss is converted into heat becomes what is very expensive with additional to install Cooling capacity must be compensated.
  • the low-temperature heat exchanger according to the invention, with which the task is solved is marked through a bundle of pipes that have at least one inlet manifold connect to at least one outlet header and that between the inlet manifold and the outlet manifold helically around a cylindrical core are wound and by a cylindrical outer jacket are surrounded.
  • Thin tubes preferably with a diameter from 2 to 5 mm, have a large for a given volume Surface.
  • the pressure drops in one through the pipes flowing medium are small.
  • pipes are opposite Press relatively stiff, making the tubes thin-walled can be, for example, with a wall thickness of 0.1 to 0.25 mm. With such small wall thicknesses, the pipes can also be made stainless steel, especially chrome nickel steel. Because of the small wall thickness, there is sufficient heat transfer through the pipe wall despite the relatively poor Guaranteed thermal conductivity of chrome nickel steel. At Pressures of up to about 20 or 30 bar are sufficient for a chrome-nickel steel wall thickness of tubes of about 0.15 mm.
  • the low-temperature heat exchanger according to FIG. 1 and 2 which is suitable for temperatures of a few Kelvin, for example 2-5 K, and pressures or pressure differences of Suitable for heat exchange media of up to about 20 bar a cylindrical shell 10 with an inlet 11 and an outlet 12.
  • a Inlet manifold 13 arranged, and in the region of the inlet 11, an outlet header 14 is arranged.
  • outlet manifold 14 a bundle of tubes 15 connected.
  • the clarity only three pipes 15 are shown for the sake of this; in reality the number of pipes is much larger, for example there may be about twelve pipes 15.
  • the tubes 15 have a substantially circular shape Cross section, preferably an outer diameter from 2 to 5 mm, preferably a wall thickness of 0.1 to 0.25 mm, in particular about 0.15 mm, and preferably consist made of stainless steel, especially chrome nickel steel.
  • the tubes 15 are helical a cylindrical core 16 is wound. Between the layers the tubes 15 wound around the core 16 are spacer elements 17, e.g. in the form of bars, arranged, which are radial and axial between pipes or pipe layers Form distances so that what enters through inlet 11 and heat exchange medium emerging through the outlet 12 can pass between the tubes 15. In countercurrent the other heat exchange medium flows to this heat exchange medium from inlet manifold 13 through pipes 15 to Outlet collector 14.
  • the pipes 15 are with a minimal Slope wound on the core 16, so that through the Pipes 15 flowing medium at an angle of approximately 90 ° to that flowing through inlet 11 and outlet 12 Medium is performed. This results in a cross-counterflow heat exchanger with excellent effectiveness.
  • the outer jacket 10, the core 16 and also the Inlet manifold 13 and outlet manifold 14 may be off consist of the same material as the tubes 15, that is preferably also made of stainless steel.
  • the low-temperature heat exchanger shown in FIGS. 1 and 2 has only one inlet manifold 13 and an outlet collector 14. In a variant, however also two or more inlet manifolds and accordingly two or more outlet collectors for different heat exchange media to be available. Any inlet manifold would be thereby with the assigned outlet collector by one each Bundle of tubes 15 wound around the core 16 connected.
  • a core 116 has two open ends. For that is one End 109 of the outer shell 110 closed.
  • the one Heat exchange medium flows through an inlet 111 at the other End in the outer jacket. After flowing through the or the bundle of tubes 15 (not shown in FIG. 3) the medium flows through the interior of the core 116 back to an outlet 112.

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)
EP98810197A 1998-03-09 1998-03-09 Echangeur de chaleur cryogénique Withdrawn EP0942250A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98810197A EP0942250A1 (fr) 1998-03-09 1998-03-09 Echangeur de chaleur cryogénique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810197A EP0942250A1 (fr) 1998-03-09 1998-03-09 Echangeur de chaleur cryogénique

Publications (1)

Publication Number Publication Date
EP0942250A1 true EP0942250A1 (fr) 1999-09-15

Family

ID=8235978

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810197A Withdrawn EP0942250A1 (fr) 1998-03-09 1998-03-09 Echangeur de chaleur cryogénique

Country Status (1)

Country Link
EP (1) EP0942250A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006017609U1 (de) * 2006-11-16 2008-03-27 Rehau Ag + Co Wärmeübertrager
US20210348850A1 (en) * 2020-05-05 2021-11-11 Air Products And Chemicals, Inc. Coil wound heat exchanger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB950310A (en) * 1961-06-12 1964-02-26 Sulzer Ag Heat exchangers
DE1501479A1 (de) * 1965-08-09 1969-10-30 Cvi Corp Waermeaustauscher
EP0062691A1 (fr) * 1981-04-15 1982-10-20 Elpag Ag Chur Echangeur de chaleur
WO1988001362A1 (fr) * 1986-08-21 1988-02-25 Emil Bader Echangeur de chaleur a contre-courant a faisceau helicoidal de tubes
WO1994017355A1 (fr) * 1993-01-23 1994-08-04 Klaus Lorenz Dispostif echangeur de chaleur et procede de transfert thermique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB950310A (en) * 1961-06-12 1964-02-26 Sulzer Ag Heat exchangers
DE1501479A1 (de) * 1965-08-09 1969-10-30 Cvi Corp Waermeaustauscher
EP0062691A1 (fr) * 1981-04-15 1982-10-20 Elpag Ag Chur Echangeur de chaleur
WO1988001362A1 (fr) * 1986-08-21 1988-02-25 Emil Bader Echangeur de chaleur a contre-courant a faisceau helicoidal de tubes
WO1994017355A1 (fr) * 1993-01-23 1994-08-04 Klaus Lorenz Dispostif echangeur de chaleur et procede de transfert thermique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006017609U1 (de) * 2006-11-16 2008-03-27 Rehau Ag + Co Wärmeübertrager
US20210348850A1 (en) * 2020-05-05 2021-11-11 Air Products And Chemicals, Inc. Coil wound heat exchanger
US11561049B2 (en) * 2020-05-05 2023-01-24 Air Products And Chemicals, Inc. Coil wound heat exchanger

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