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
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
• • 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
  • F28D7/1684—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 the conduits having a non-circular cross-section
  • F28D7/1692—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 the conduits having a non-circular cross-section with particular pattern of flow of the heat exchange media, e.g. change of flow direction
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/02—Header boxes; End plates
  • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
  • F28F9/0221—Header boxes or end plates formed by stacked elements
• • 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
  • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
  • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
  • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
  • F28D2021/0073—Gas coolers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
  • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
  • F28F2009/224—Longitudinal partitions

Definitions

• the present invention relates to a heat exchanger for U-circulating fluids, in particular a high-pressure heat exchanger, that is to say having at least one circuit in which a high-pressure gas circulates, said circuit consisting of by tubes adapted for this high pressure gas.
• patent FR 2852383 describes a particular arrangement for a header and a high pressure heat exchanger including this manifold.
• the present invention relates to a heat exchanger between two fluids, comprising tubes aligned parallel to each other and at least two manifolds, called inlet and outlet manifold, for one of said fluids, said first fluid, said first fluid flowing in the tubes, characterized in that it comprises at least one partition wall for forming a U-shaped circuit for the second fluid; said wall comprising at least one recess to allow the passage of the second fluid on either side of said wall.
• each side has an inlet / outlet manifold for one of the two fluids, said second fluid;
• the heat exchanger comprises two end plates, one of which has two inlet / outlet pipes for one of the two fluids, said first fluid;
• FIG. 3 schematically represents a view from above of the heat exchanger according to the invention
• FIG. 4 is a sectional view of the exchanger according to the section AA illustrated in FIG. 3,
• FIG. 5 is a sectional view of the exchanger according to section BB illustrated in FIG. 3;
• FIG. 6 is a sectional view of the exchanger according to section CC illustrated in FIG.
• Figure 1 is a perspective representation of a heat exchanger 1 according to the invention. It is constituted by the juxtaposition of a multiplicity of 2 planar tubes arranged parallel to each other.
• the tubes 2 are multichannel type. They are pierced internally with a multiplicity of parallel channels 3 intended, in the example, for the circulation of a fluid under high pressure, for example CO 2 .
• a cap wall 4 is disposed at one end of each tube 2.
• a spacer wall 5 is interposed between each cap wall 4. There is thus an overlap, alternately, of a cap wall 4 and a spacer wall 5.
• the cap walls 4 and the spacer walls 5 are constituted by individualized elements, separated from each other, cut individually in a sheet.
• the cap walls 4 and the spacer walls 5 thus constitute individual plate-shaped elements constituting cap plates 4 and spacer plates 5.
• the spacer plates 5 comprise two circular cutouts 7, 8.
• the walls or cover plates 4 comprise two cutouts 7 ', 8'.
• the cut-outs 1 1 of the cover plates 4 are open so as to have a housing cut-out adapted to receive the end of the tube 2 to 1. end of which they are mounted.
• the cut-outs 7 ', 8' are thus in fluid communication with the multiple longitudinal channels 3 of the multi-channel tubes 2.
• the cut-outs 7 ' are in communication with the tubes 2', while the others cutouts 8 'of passage are in fluid communication with the other tubes
• the passage cutouts 7, 8 of the spacer plates 5 and the cut-outs 7 ', 8' of the cover plates 4 are superposed, at least in part, in order to produce fluid channels for the distribution of the coolant in the tubes. 2.
• partition plates not shown in the accompanying figures but in accordance with those of patent FR 2852383, which have no cut.
• the replacement of a spacer plate by a partition plate closes the fluid channels, which makes it possible conventionally to make passes for the circulation of the first fluid which circulates in the tubes.
• the first object of the invention is to provide a U-shaped circulation for at least one of the fluids thanks to the partition wall 9, the U-shaped circuit extending horizontally, that is to say in the plane of Extension of the tubes 2 or inter-tube conduits 18. Moreover, thanks to the partition plates, it will be possible to create passes for the circulation of the first fluid so that its circulation is also vertical or perpendicular to the U-shaped circulation plane made possible by to the circulation wall 9.
• the heat exchanger comprises an upper end plate 10 and a lower end plate 11.
• the end plate 10 has two cut-outs which are superimposed on the cut-outs of the spacer plate 5 attached to the end plate. end 10. The cuts allow the connection of the inlet pipes 12 and outlet 13 for the fluid, for example CO 2.
• the exchanger according to the invention comprises alternately at one end a cap plate 4 and a spacer plate 5 and at the other end a solid plate 14 and a hollow plate 15.
• the space defined between two tubes 2 is equal to the thickness of the spacer plates 5. This space is therefore not important. Consequently, an exchanger of this type is particularly suitable for liquid / gas exchange.
• the heat exchanger according to the present invention differs from that described in patent FR 2852383 essentially in that the walls spacer 5 / cap 4 and the solid walls 14 / hollow 15 are adapted to accommodate a partition wall 9.
• the spacer walls 5 and the cap walls 4 have a slot or a recess 16 intended to receive one end of the partition wall 9.
• the heat exchanger 1 On the opposite side to the manifold 4, 5 for the refrigerant or supercritical fluid, the heat exchanger 1 also comprises two types of stacked walls, called the solid walls 14 and the hollow walls 15.
• the hollow walls 15 are fixed in screws with respect to the ends of the tubes 2, and therefore also of the cap walls 4, so that the circulation of the fluid conveyed by the tubes 2 can be made from a contiguous tube 2 'to the other 2 "while the walls 14 are facing the walls 5 and extend beyond the ends of the tubes 2 so that the fluid flowing in the tubes 2 can not pass or circulate between the tubes 2 located at different heights or levels.
• the circuit for the fluid essentially in gaseous form starts from the tubes 12, 13 located on the end plate 11. This fluid then passes into the inlet manifold 4, 5 formed by the cap walls 4 and the recesses of the spacer walls. 5.
• the first row 2 'of tubes 2 opening into this inlet manifold this fluid flows in the tubes T of this first row up into the plurality of intermediate collectors, each formed by the hollow walls 15.
• the fluid substantially gaseous then passes through the recesses or orifices 21, here consisting of circular recesses present in the partition wall 9 to reach the second row 2 "of tubes 2.
• the gaseous fluid then passes through the tubes 2" of this second row to lead to the formed outlet manifold, like the manifold inlet, by stacking the walls cap 4 and walls spacer 5.
• This fluid arr Into the outlet manifold is then evacuated through the outlet manifold 12, or second manifold, present on the endplate 11.
• the inlet 19 of the second fluid is located at a distance from the holes or recesses 22 so that this fluid flows over the entire length, or almost the entire length of the inter-tube duct 18.
• the flow of the two fluids is desirable for the flow of the two fluids to be against or counter-current and to provide for the second fluid (or first fluid) to begin to exchange with the first fluid (or second fluid) at its outlet section. 2 "corresponding to the inlet section for the second fluid so as to optimize the heat exchange performance between the fluids.
• the holes or recesses 21 for the first fluid namely the essentially gaseous fluid
• the holes or recesses 22 for the second fluid namely the essentially liquid fluid

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)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38626274

Family Applications (1)

Country Status (3)

Families Citing this family (13)

Citations (5)

• 2007
  • 2007-02-16 FR FR0701132A patent/FR2912811B1/fr not_active Expired - Fee Related
  • 2007-12-11 EP EP07848064A patent/EP2140218A1/de not_active Withdrawn
  • 2007-12-11 WO PCT/EP2007/063741 patent/WO2008107032A1/fr active Application Filing

Patent Citations (5)

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