EP3002530B1 - Échangeur thermique, dispositif d'échangeur thermique et procédé d'utilisation d'un échangeur thermique - Google Patents

Échangeur thermique, dispositif d'échangeur thermique et procédé d'utilisation d'un échangeur thermique Download PDF

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Publication number
EP3002530B1
EP3002530B1 EP14187625.0A EP14187625A EP3002530B1 EP 3002530 B1 EP3002530 B1 EP 3002530B1 EP 14187625 A EP14187625 A EP 14187625A EP 3002530 B1 EP3002530 B1 EP 3002530B1
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EP
European Patent Office
Prior art keywords
heat exchanger
condenser
wetting
accordance
desuperheater
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.)
Not-in-force
Application number
EP14187625.0A
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German (de)
English (en)
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EP3002530A1 (fr
Inventor
Heinz Jackmann
Michael Freiherr
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.)
Guentner GmbH and Co KG
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Guentner GmbH and Co KG
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Priority to EP14187625.0A priority Critical patent/EP3002530B1/fr
Publication of EP3002530A1 publication Critical patent/EP3002530A1/fr
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Publication of EP3002530B1 publication Critical patent/EP3002530B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B5/00—Condensers employing a combination of the methods covered by main groups F28B1/00 and F28B3/00; Other condensers
    • 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
    • F28D3/00—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 flows in a continuous film, or trickles freely, over the conduits
    • F28D3/02—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 flows in a continuous film, or trickles freely, over the conduits with tubular conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/041—Details of condensers of evaporative condensers

Definitions

  • the invention relates to a heat exchanger according to the preamble of independent claim 1, a heat exchanger device according to claim 10 and a method for wetting a heat exchanger according to the preamble of independent claim 14.
  • the prior art heat exchanger or heat exchange devices and methods for their wetting are known and find themselves in a variety of technical applications.
  • Heat exchangers are used in refrigerators, such as used in ordinary household refrigerators, in air conditioners for buildings or in vehicles of all kinds, especially in automobiles, aircraft and ships, as water or oil coolers in internal combustion engines, as condensers or evaporators in coolant circuits and in a myriad of different applications, all of which are well known to those skilled in the art are.
  • the heat exchangers are often connected to a circuit containing a refrigerant, ie a heat transfer medium such as a coolant, wherein the heat exchanger heat directly, ie record without phase transition from the liquid or gaseous refrigerant or can deliver to the same, or as a capacitor or evaporator for the refrigerant can be effective.
  • a refrigerant ie a heat transfer medium such as a coolant
  • the transport fluid outside the heat exchanger eg water, oil or often simply the ambient air, can absorb heat energy from the heat exchanger or transferred to the heat exchanger, it is thus either heated or cooled accordingly.
  • the transport fluid thus usually has a much lower heat transfer coefficient than the refrigerant circulating in the heat exchanger. This is compensated by greatly different heat transfer surfaces for the two media.
  • the refrigerant with the high heat transfer coefficient thus flows in a tube or extruded profile, which has on the outside by one or more ribs or fins, such as sheets, a greatly enlarged surface at which the heat transfer with the transport fluid, for example, the ambient air takes place.
  • One way of meaningfully classifying heat exchangers is to make a distinction according to the design of the various types of heat exchangers.
  • a widely used version is the laminated heat exchanger.
  • a laminated heat exchanger consists of a tube for the passage of the refrigerant and a plurality of fins, which are connected to the tube and are in operation with a transport fluid in communication.
  • the laminated heat exchanger is particularly useful when the transport fluid is gaseous and consists of ambient air, since this has a comparatively low heat transfer coefficient, which can be compensated by a correspondingly large surface of the slats.
  • the efficiency is essentially determined by the temperature difference between the fins on the one hand and the or the pipes on the other hand.
  • the temperature difference is the smaller, i. the more effective the heat transfer, the greater the conductivity and the thickness of the fins, and the smaller the mutual distance of the tubes.
  • many tubes also mean higher material and processing costs, so higher efficiency is usually associated with higher costs.
  • this material cost could be reduced by reducing the pipe diameter and wall thickness, i. You build a heat exchanger with many small pipes instead of a few big pipes. Thermodynamically, this solution would be optimal: very many tubes in close proximity with small diameters.
  • microchannel heat exchangers which are manufactured using a completely different process and are almost identical to the ideal of a laminated heat exchanger: many small tubes with small gaps.
  • the microchannel heat exchanger uses an extruded profile, for example made of aluminum, which has a large number of small channels with a diameter of, for example, about 1 mm.
  • a heat exchanger depending on the required heat output, can already manage with a single extruded profile as a central heat exchange element.
  • To achieve higher heat transfer performance can of course also be provided in a single heat exchanger and several extruded profiles simultaneously, in suitable combinations for Example of supply and discharge lines connected to each other, for example, to be soldered together.
  • Such extruded profiles may e.g. be made easily and in a variety of forms from a variety of materials in suitable extrusion.
  • other methods of making microchannel heat exchangers are known, such as e.g. the assembly of suitably shaped profile sheets or other suitable methods.
  • These profiles can not, and you do not need to widen and they are not inserted into stamped plate packs. Instead, for example, between two closely spaced profiles (common distances, for example, ⁇ 1cm) slats laid, which are formed, for example, as a folded metal strips, in particular made of aluminum. By alternating juxtaposition of lamella and profile, which are subsequently soldered, then creates a heat exchanger.
  • the efficiency of the heat exchanger can, for example, to save energy and to enable improved operation, be further increased by this additionally comprises a wetting device for the task of a wetting fluid.
  • a wetting device for the task of a wetting fluid.
  • the heat exchanger is wetted with the wetting fluid by the wetting fluid is pumped, for example from a reservoir or other means to the wetting device and the heat exchanger, for example by means of spray, is abandoned.
  • a drip pan can be arranged, in which the excess wetting fluid drips. Subsequently, the wetting fluid can be treated, for example, in the drip pan, and be led back into the reservoir. Disadvantage is that such a circulation system is very expensive in terms of the cost and very expensive to operate.
  • a dry cooling tower for the hybrid liquefaction of a refrigerant is described with such a described wetting device.
  • the Indian EP 0 943 882 B1 described dry cooling tower provides that the heat exchanger is divided into a desuperheater and a downstream of the desuperheater, the lower end of the desuperheater covered only a portion of the upper end of a condenser, the desuperhed so arranged offset to the condenser.
  • the wetting device is arranged, with which the condenser is wetted with the wetting fluid.
  • the desuperheating of a hot gas takes place in a small area of the heat exchanger by means of the transport fluid, for example dry ambient air.
  • the transport fluid for example dry ambient air.
  • the desuperheater and condenser in spite of the described arrangement, due to the spraying of the wetting fluid wetted with this, so that the wetting fluid, for example, evaporates or evaporates or form lime deposits on the desuperheater.
  • the operation of the wetting system is very expensive, since the excess wetting fluid must be collected and processed, so a circulation system is necessary.
  • a heat exchanger wherein an outer boundary of the heat exchanger is formed by an inflow surface and an outflow surface such that in the operating state for exchanging heat between a transport fluid and a refrigerant flowing through the heat exchanger, the transport fluid can be supplied to the heat exchanger via the inflow surface Heat exchanger can be brought into flowing contact and discharged via the outflow from the heat exchanger again.
  • the heat exchanger includes a desuperheater and a condenser.
  • the heat exchanger comprises a separating element, wherein the separating element is configured and arranged at a separation point, that the inflow is divided into a Enthitzer Symposium and a condenser.
  • the partition may be circular, elliptical or polygonal, in particular, the partition may be made rectangular.
  • the separating element may be flat or have a curvature.
  • the separator may be a sheet-like material, such as a sheet, and the material may be, for example, a metal or a metallic alloy, preferably an aluminum alloy, a stainless steel, stainless steel or a plastic.
  • the partition can be painted, for example, with be painted a powder coating.
  • the thickness of the sheet-like material may for example be in a range between 0.5 mm to 10 mm, preferably between 1 mm to 3 mm.
  • the separation point can be in or at the heat exchanger.
  • the separation point may be formed as one or more separation points or as a parting line.
  • the dividing line may have any desired course, but preferably be formed as a horizontal or vertical straight line.
  • the separation point can run on a pipe, for example a support tube or refrigerant pipe leading.
  • the separating element may comprise one or more attachment areas, for example round, in particular semicircular, or polygonal gaps or indentations, so that the separating element can be arranged precisely fitting at the separation point, in particular at the tube.
  • the separating element can be arranged at the separation point and fastened to one or more end plates of the heat exchanger or else to a housing in which the heat exchanger can be arranged.
  • the separating element can be arranged at the separation point, that is to say, for example, be fastened by means of screwing, welding or clipping.
  • the separating element can be fastened to a pipe, for example a support pipe or a pipe carrying refrigerant.
  • the separating element can also be attached to an intermediate piece, for example a holder, and the intermediate piece can be arranged at the separating point on the heat exchanger, that is to say, for example, be fastened by screwing, welding or clipping.
  • the separating element may in particular be arranged on the outer boundary surface, preferably on the side of the inflow surface, on the desuperheater and condenser.
  • the separating element may be arranged at a distance from the slats, in front of the slats, between the slats or in another way at the separation point between the desuperheater and condenser.
  • the separating element may preferably be on the side of the inflow surface, in particular between or on the fins of the Heat exchanger, so be arranged the slats of the desuperheater and condenser.
  • the heat exchanger may be a laminated heat exchanger, which may comprise, for example, a plurality of tubes for passing the refrigerant and a plurality of fins.
  • the fins can be connected to the tubes and are in operation with the transport fluid in connection.
  • the fins or tubes may be made of a good thermal conductivity material, for example aluminum or copper, preferably stainless steel.
  • the laminated heat exchanger may also contain a plurality of tubes for more than one heat transfer medium, or the tubes may be connected in parallel and / or in series as needed.
  • the heat exchanger may also be a plate or a microchannel heat exchanger.
  • the heat exchanger can be designed as a one-piece heat exchanger, that is, as a heat exchanger with continuously formed fins, wherein in particular the desuperheater and the condenser have continuously formed together fins.
  • the separating element is configured and arranged at a separation point that the inflow into a Enthicherer Scheme and a condenser area is divided. Since the transport fluid is supplied to the heat exchanger in the operating state via the inflow, it can be achieved with this measure that the inflow is divided into a Enthitzer Anlagen and a condenser, so that the desuperheating of the hot gas takes place in a smaller area of the heat exchanger.
  • a subdivision of the inflow can be achieved easily and inexpensively.
  • the heat exchanger comprises a wetting device for discharging a wetting fluid
  • the heat exchanger in particular the condenser, is wettable with the wetting fluid
  • the wetting device is arranged in the condenser region, in particular between the separating element and a front end of the heat exchanger.
  • the wetting fluid may be pumped from a reservoir to the wetting device.
  • the wetting fluid may form a drop-forming liquid film on the heat exchanger.
  • the wetting device may be equipped with spray nozzles, wherein the spray nozzle may be, for example, a hollow cone nozzle, a flat jet nozzle or any other type of nozzle suitable for wetting the heat exchanger.
  • the wetting device is arranged in the condenser region, in particular between the separating element and a front end of the heat exchanger. As the front end, especially the front end of the condenser, the end of the heat exchanger or condenser can be understood, which is arranged on the side facing away from the desuperheater.
  • the end of the heat exchanger or Enthitzers can be understood, which is arranged on the side facing away from the condenser.
  • the wetting device can preferably be arranged on the inflow surface in the condenser region his.
  • the wetting device can wet the heat exchanger in the operating state, in particular the condenser, for the same or different length of time intervals, in one or more sections and with different amounts of wetting fluid.
  • a section can be understood to mean a delimited part of the heat exchanger, which is ventilated by a fan.
  • a heat exchanger may comprise one or more sections, which are spatially separated, for example by means of a partition wall, such that the transport fluid can be transported in a section by a fan.
  • the wetting device is thus advantageously arranged in the condenser region such that only the condenser can be wetted during operation and no wetting fluid enters the desuperheating area or wets the desuperheater.
  • the Enthitzer #2 which may be an area with very high temperatures, does not come into contact with the wetting fluid, so that evaporation, ie a complete evaporation of the wetting fluid, or lime failure, which forms deposits is prevented.
  • this wetting fluid can be saved, because in the range of Enthitzers large temperature differences between the heat transfer medium and ambient air are present and wetting to increase performance is not required.
  • the wetting device can wet the heat exchanger as a function of a load requirement so accurately with an amount of wetting fluid that no or little wetting fluid drips as excess from the heat exchanger.
  • it is thus possible to dispense with a collecting trough or a circulation system.
  • the heat exchanger is in two parts, in particular the desuperheater and the condenser, designed as structurally separate units.
  • the two-part heat exchanger can be a desuperheater and a condenser include, which are designed as structurally separate units.
  • Under separate units can be understood a heat exchanger with separately formed fins, in particular the desuperheater and the condenser may be formed with separately formed fins.
  • the heat exchanger can thus have a modular design and thus be manufactured inexpensively.
  • the separating element between the desuperheater and condenser is arranged.
  • the separating element can be arranged at the point of separation between the desuperheater and the condenser, that is to say it can be arranged between the slats.
  • the separating element can preferably be arranged on the side of the inflow surface, in particular between the louvers of the desuperheater and condenser.
  • the desuperheater and the condenser can be designed as a unit that can be divided in a simple manner by means of the separating element in a condenser and a Enthitzer Symposiumt.
  • the separator can thus easily cause complete separation in condenser and Enthitzer Symposium.
  • a pipe leading the refrigerant of the desuperheater passes into the coil leading the refrigerant of the condenser.
  • the condenser and / or the desuperheater consist of several independent, interconnected units that are connected to each other horizontally or in parallel or in series.
  • the desuperheater and the condenser have a separate, leading a refrigerant coil, and the refrigerant pipe leading the desuperheater passes into the refrigerant pipe leading coil of the condenser.
  • the heat exchanger is an air-cooled condenser, in particular with ammonia as the refrigerant, or a gas cooler, in particular with carbon dioxide as the refrigerant.
  • ammonia or carbon dioxide can be used as refrigerant, which are particularly environmentally friendly, since these refrigerants do not contribute to the degradation of the ozone layer and either have no or only a very small direct impact on the greenhouse effect.
  • the heat exchanger is a lamella heat exchanger.
  • the heat exchanger comprises a section.
  • a section can be understood to mean a delimited part of the heat exchanger, which is ventilated independently and / or spatially separated from another section, for example by one or more fans.
  • a heat exchanger may comprise one or more sections, which may be separated spatially, for example by means of a partition wall, so that the transport fluid in one section can be transported independently and / or spatially separated from another section.
  • the wetting device can wet the heat exchanger in the operating state, in particular the condenser, in a same or different length of time interval, in one or more sections and with different amounts of wetting fluid.
  • one or more sections can be wetted optimally at the same time and independently of one another and / or after wetting time.
  • the invention relates to a heat exchanger device comprising a heat exchanger.
  • the heat exchanger device comprises a fan which is designed and arranged such that a transport fluid can be sucked in via an inflow surface of the heat exchanger, brought into flowing contact with the heat exchanger and can be discharged again via an outflow surface from the heat exchanger.
  • the speed of the fan is adjustable.
  • the heat exchanger device may include one or more fans.
  • the fan can generate a flow of the transport fluid in the operating state.
  • a speed of the fan can be regulated, ie variable in speed.
  • a use of the variable speed fans has the advantage that then the power consumption and thus the power consumption of the fans is considerably lower. With a variable-speed fan but also water can be saved, as increases with decreasing load, the proportion of convective heat output.
  • a first longitudinal axis of the heat exchanger is inclined to a second longitudinal axis of the heat exchanger device. If the heat exchanger device comprises at least two heat exchangers, the at least two heat exchangers being arranged opposite one another with respect to the second longitudinal axis, then these form a V with their first longitudinal axes.
  • the excess wetting fluid can thus drip off.
  • the wetting of the heat exchanger (s) or section (s) of the heat exchanger device, in particular of the condenser (s) of the heat exchangers can be carried out sequentially, ie the various sections or heat exchangers can be wetted in succession with the wetting fluid.
  • a time interval for a wetting for a section or a heat exchanger can be different or be the same length. For this reason, the wetting time of one section or heat exchanger may be different compared to another wetting time of another section or heat exchanger.
  • the sections or heat exchangers can be operated and used at the same time or in each case alternately, according to requirements, and at the same time the wetting time of a section or of a heat exchanger can be kept small compared to the total service life. Also compared to a complete and / or simultaneous wetting of all sections or the entire heat exchanger, the wetting time of a sequential wetting a section or a heat exchanger is much lower, that is cheaper.
  • the invention relates to a method for wetting a heat exchanger.
  • an outer boundary of the heat exchanger is formed by an inflow and an outflow surface such that in the operating state for exchanging heat between a transport fluid and a refrigerant flowing through the heat exchanger, the transport fluid supplied via the inflow to the heat exchanger, brought into flowing contact with the heat exchanger and is discharged again via the outflow surface from the heat exchanger.
  • the heat exchanger comprises a desuperheater, a condenser and a wetting device for discharging a wetting fluid.
  • the heat exchanger comprises a separating element wherein the separating element configured in such a way and on a Separation point is arranged, that the inflow is divided into a Enthitzer Siemens and a condenser, the wetting device in the condenser, especially between the separator 2 and a front end of the heat exchanger, is arranged and the heat exchanger, in particular the condenser, is wetted by the wetting device in the condenser ,
  • the method can be carried out with the heat exchanger according to the invention and / or the heat exchanger device.
  • the heat exchanger 1 comprises a desuperheater 13 and a condenser 14.
  • An outer boundary of the heat exchanger 1 is formed by an inflow and an outflow surface such that in the operating state for the exchange of Heat between a transport fluid and a refrigerant flowing through the heat exchanger 1, the transport fluid through the inflow to the heat exchanger 1 can be supplied, with the heat exchanger 1 in flowing contact and discharged via the outflow from the heat exchanger 1 again.
  • the heat exchanger 1 also comprises a separating element 2, wherein the separating element 2 is designed and arranged at a separation point 21 such that the heat exchanger 1 is subdivided into a desuperheating region 16 and a condenser region 15. Im in Fig.
  • the separating element 2 is configured and arranged at the separation point 21, that in particular the inflow is divided into a Enthitzer Siemens 16 and a condenser 15.
  • the heat exchanger 1 comprises a wetting device 3 for discharging a wetting fluid, with which the heat exchanger 1, in particular the condenser 14, is wettable with the wetting fluid.
  • the wetting fluid which wets in the operating state of the wetting device 3 is shown schematically as a dashed line.
  • the wetting device 3 is arranged in the condenser region 15, in particular between the separating element 2 and a front end 17 of the heat exchanger 1.
  • the condenser 14 is wetted with the wetting fluid and wetting of the desuperheater 13 is avoided. Evaporation or evaporation of the wetting fluid or limescale that forms deposits in the Enthitzer Scheme 16 and the desuperheater 13 is thus avoided.
  • the heat exchanger 1 or the heat exchanger device 6 can thereby be produced and simplified in a cost-effective manner since, for example, a circulation system or a preparation of the wetting fluid can be dispensed with.
  • the heat exchanger 1, in particular the condenser 14 and / or the desuperheater 13 may consist of several independent, interconnected units, which are connected to each other in parallel or in series.
  • the heat exchanger 1 may be an air-cooled condenser 14, in particular with ammonia as the refrigerant, or a gas cooler, in particular with carbon dioxide as the refrigerant.
  • the heat exchanger 1 in the first embodiment shown is a lamella heat exchanger.
  • the heat exchanger device 6 shown comprises a two-part heat exchanger 1, 11 and a heat exchanger 1.12 made in one piece.
  • the two-part heat exchanger 1, 11 comprises a desuperheater 13 and a condenser 14, which are designed as structurally separate units. Under separate units is a desuperheater 13 and a condenser 14 with separately formed fins and / or a refrigerant pipe leading the Enthitzers 13, which passes into the refrigerant of the condenser 14 leading coil, to understand.
  • Under a one-piece heat exchanger 1, 12, is however, to understand a desuperheater 13 and a condenser 14 with continuously formed fins and / or a continuous coil.
  • the separating element 2 can be arranged as on the one-piece heat exchanger 1, 12, in particular on the desuperheater 13 and condenser 14, or as in the two-part heat exchanger 1, 11 between the desuperheater 13 and condenser 14 may be arranged.
  • the heat exchanger device 6 comprises a fan 5, which is designed and arranged such that a transport fluid can be sucked in via an inflow surface of the heat exchanger 1, brought into flowing contact with the heat exchanger 1 and discharged again via an outflow surface from the heat exchanger 1.
  • a speed of the fan 5 can be regulated.
  • the heat exchanger 1, in particular the two heat exchangers 1, 11, 12 in Fig. 1 Have a first longitudinal axis 7, which is inclined to a second longitudinal axis 8 of the heat exchanger device 6.
  • the two heat exchangers 1, 11, 12 are arranged opposite one another with respect to the second longitudinal axis 8, so that they form a V with their first longitudinal axes 7.
  • the inventive method for wetting a heat exchanger 1 and the measures described in the dependent claims can be carried out with the described heat exchanger 1 and the heat exchanger device 6.
  • an outer boundary of the heat exchanger 1 is formed by an inflow and an outflow surface such that in the operating state for exchanging heat between a transport fluid and a refrigerant flowing through the heat exchanger 1, the transport fluid via the inflow to the heat exchanger 1, with the heat exchanger 1 in flowing contact and over the Outflow surface is removed from the heat exchanger 1 again.
  • the heat exchanger 1 comprises a desuperheater 13, a condenser 14 and a wetting device 3 for discharging a wetting fluid.
  • the heat exchanger 1, 11, 12 comprises a separating element 2, wherein the separating element 2 is configured and arranged at a separation point 21, that the inflow is divided into a Enthitzer Siemens 16 and a condenser 15, the wetting device 3 in the condenser 15, in particular between the separating element 2 and a front end 17 of the heat exchanger 1, is arranged and the heat exchanger 1, in particular the condenser 14, by means of the wetting device 3 in the condenser 15 is wetted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (14)

  1. Un échangeur de chaleur, dans lequel une limite extérieure de l'échangeur de chaleur (1, 11, 12) est configurée par une surface d'entrée et une surface de sortie de telle sorte que, à l'état de fonctionnement, pour échanger de la chaleur entre un fluide de transport et un fluide frigorigène circulant à travers l'échangeur de chaleur (1, 11, 12), le fluide de transport peut être amené à l'échangeur de chaleur (1, 11, 12) via la surface d'entrée, peut être mis en contact fluide avec l'échangeur de chaleur (1, 11, 12) et peut être déchargé à nouveau de l'échangeur de chaleur (1, 11, 12) via la surface de sortie, dans lequel l'échangeur de chaleur (1, 11, 12) comprend un désurchauffeur (13) et un condenseur (14),
    caractérisé en ce que
    l'échangeur de chaleur (1, 11, 12) comprend un élément de séparation (2), dans lequel élément de séparation (2) est configuré de telle sorte et est disposé en un point de séparation (21) que la surface d'entrée est subdivisée en une zone de désurchauffeur (16) et une zone de condenseur (15).
  2. Un échangeur de chaleur selon la revendication 1, dans lequel l'échangeur de chaleur (1, 11, 12) comprend un dispositif de mouillage (3) pour alimenter un fluide de mouillage et l'échangeur de chaleur (1, 11, 12), en particulier le condenseur (14), peut être mouillé avec le fluide mouillant, et le dispositif de mouillage (3) est disposé dans la zone du condenseur (16), en particulier entre l'élément de séparation (2) et une extrémité avant (17) de l'échangeur de chaleur (1, 11, 12).
  3. Un échangeur de chaleur selon l'une des revendications précédentes, dans lequel l'échangeur de chaleur (1, 11, 12) est configuré en deux parties, en particulier le désurchauffeur (13) et le condenseur (14) sont configurés comme des unités structurellement séparées.
  4. Un échangeur de chaleur selon l'une des revendications précédentes, dans lequel l'élément de séparation (2) est disposé entre le désurchauffeur (13) et le condenseur (14).
  5. Un échangeur de chaleur selon l'une des revendications précédentes, dans lequel un serpentin conducteur de fluide frigorigène du désurchauffeur (13) fusionne dans le serpentin conducteur de fluide frigorigène du condenseur (14).
  6. Un échangeur de chaleur selon l'une des revendications précédentes, dans lequel le condenseur (14) et / ou le désurchauffeur (13) consiste en une pluralité d'unités indépendantes et interconnectées, qui sont montés en parallèle ou en série.
  7. Un échangeur de chaleur selon l'une des revendications précédentes, dans lequel l'échangeur de chaleur (1, 11, 12) est un condenseur refroidi par air, en particulier avec de l'ammoniac comme fluide frigorigène, ou un refroidisseur de gaz, en particulier avec du dioxyde de carbone comme fluide frigorigène.
  8. Un échangeur de chaleur selon l'une des revendications précédentes, dans lequel l'échangeur de chaleur (1, 11, 12) est un échangeur de chaleur à ailettes.
  9. Un échangeur de chaleur selon l'une des revendications précédentes, dans lequel l'échangeur de chaleur (1, 11, 12) comprend une section.
  10. Un dispositif échangeur de chaleur comprenant un échangeur de chaleur (1, 11, 12) selon l'une des revendications précédentes.
  11. Un dispositif échangeur de chaleur selon la revendication 10, comprenant un ventilateur (5) qui est conçu et disposé de telle sorte qu'un fluide de transport peut être aspiré via une surface d'entrée de l'échangeur de chaleur (1, 11, 12), peut être mis en contact fluide avec l'échangeur de chaleur (1, 11, 12) et peut être déchargé à nouveau de l'échangeur de chaleur (1, 11, 12) via la surface de sortie.
  12. Un dispositif échangeur de chaleur selon la revendication 10 ou 11, dans lequel un premier axe longitudinal (7) de l'échangeur de chaleur (1, 11, 12) est incliné par rapport à un deuxième axe longitudinal (8) du dispositif échangeur de chaleur (6).
  13. Un dispositif échangeur de chaleur selon la revendication 12, comprenant au moins deux échangeurs de chaleur (1, 11, 12), dans lequel les au moins deux échangeurs de chaleur (1, 11, 12) sont disposés l'un en face de l'autre par rapport au deuxième axe longitudinal (8) de sorte qu'ils forment un V avec leurs premiers axes longitudinaux (7).
  14. Un procédé de mouillage d'un échangeur de chaleur selon la revendication 1, dans lequel à l'état de fonctionnement, pour échanger de la chaleur entre un fluide de transport et un fluide frigorigène circulant à travers l'échangeur de chaleur (1, 11, 12), le fluide de transport est amené à l'échangeur de chaleur (1, 11, 12) via la surface d'entrée, est mis en contact fluide avec l'échangeur de chaleur (1, 11, 12) et est déchargé à nouveau de l'échangeur de chaleur (1, 11, 12) via la surface de sortie, dans lequel l'échangeur de chaleur (1, 11, 12) comprend un désurchauffeur (13) et un condenseur (14) et un dispositif de mouillage (3) pour alimenter un fluide de mouillage, dans lequel le dispositif de mouillage (3) est disposé dans la zone du condenseur (15), en particulier entre l'élément de séparation (2) et une extrémité avant (17) de l'échangeur de chaleur (1, 11, 12) et l'échangeur de chaleur (1, 11, 12), en particulier le condenseur (14), est mouillé au moyen du dispositif de mouillage (3) dans la zone du condenseur (16).
EP14187625.0A 2014-10-03 2014-10-03 Échangeur thermique, dispositif d'échangeur thermique et procédé d'utilisation d'un échangeur thermique Not-in-force EP3002530B1 (fr)

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DE972293C (de) * 1952-09-21 1959-07-02 Gea Luftkuehler Ges M B H Verdunstungskuehler, insbesondere Verdunstungskondensator fuer Kaeltemaschinen
DE1083838B (de) * 1954-08-07 1960-06-23 Gea Luftkuehler Ges M B H Verdunstungskuehler, insbesondere Kuehler fuer Fluessigkeiten
DE3237860A1 (de) * 1982-10-13 1984-04-19 Hütötechnika Ipari Szövetkezet, 2891 Tata Kombinierter dampfvorkuehler zu verdunstungskondensatoren
US5390502A (en) * 1994-03-29 1995-02-21 Oven Systems, Inc. Non-freeze closed loop evaporated cooling system
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