WO2005019739A1 - Element echangeur de chaleur - Google Patents

Element echangeur de chaleur Download PDF

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Publication number
WO2005019739A1
WO2005019739A1 PCT/EP2004/009366 EP2004009366W WO2005019739A1 WO 2005019739 A1 WO2005019739 A1 WO 2005019739A1 EP 2004009366 W EP2004009366 W EP 2004009366W WO 2005019739 A1 WO2005019739 A1 WO 2005019739A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchange
membrane
heat
layer
fins
Prior art date
Application number
PCT/EP2004/009366
Other languages
English (en)
Inventor
Johannes Antonius Maria Reinders
Original Assignee
Oxycell Holding Bv
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
Priority claimed from NL1024143A external-priority patent/NL1024143C1/nl
Priority claimed from GBGB0324348.2A external-priority patent/GB0324348D0/en
Application filed by Oxycell Holding Bv filed Critical Oxycell Holding Bv
Priority to EP04764348A priority Critical patent/EP1668297A1/fr
Publication of WO2005019739A1 publication Critical patent/WO2005019739A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
    • 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
    • F28D5/00—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, using the cooling effect of natural or forced evaporation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/54—Free-cooling systems

Definitions

  • the present invention relates to a heat exchange element and more particularly to a laminate comprising a liquid retaining layer for use in evaporative type heat exchangers such as dewpoint coolers.
  • the invention also relates to an evaporative type heat exchanger and a method of producing such a heat exchange element.
  • Dewpoint coolers are known in which a first medium circuit and a second medium circuit are thermally coupled via an at least partially heat-conducting membrane. Two respective media are then caused to flow e.g. in counterflow through the circuits, wherein at least the second medium contains a gas, for instance air, with a relative humidity of less than 100%.
  • the heat-conducting membrane has break-up means for breaking up at least the thermal boundary layer, the laminar boundary layer and the relative humidity boundary layer at the position of at least active zones for heat transfer in at least the primary medium.
  • break up means are in the form of heat-conducting protrusions or fins which enlarge the effective heat-conducting surface area of said membrane and serve to conduct heat to and from the membrane.
  • Heat- conducting surfaces of the membrane and the break-up means are at least partially covered at least in the area of the secondary medium with a hydrophilic coating, which coating is for instance porous and/or can absorb an evaporable liquid, for instance water, by capillary action, retain it and relinquish it again through evaporation, such that the wetted coating, and thereby also the heat-conducting surfaces and the break-up means, are cooled.
  • a hydrophilic coating which coating is for instance porous and/or can absorb an evaporable liquid, for instance water, by capillary action, retain it and relinquish it again through evaporation, such that the wetted coating, and thereby also the heat-conducting surfaces and the break-up means, are cooled.
  • the first and second medium circuits are connected in such
  • the arrangement of the hydrophilic coating has been found critical to the effectiveness of cooling provided by the device.
  • the coating must closely contact the underlying membrane or fin in order for the latent heat of evaporation to be transferred to the evaporable liquid. Any air gap between these two layers would effectively insulate the hydrophilic layer from membrane or fin and reduce the efficiency of the device.
  • Portland cement is used to form the hydrophilic coating. This is sprayed directly on to the heat exchanger after forming thereof. While Portland cement has been found to provide excellent operational efficiency, it is relatively heavy, subject to flaking and is unpleasant to handle even in an automated environment.
  • EP 0563474 A Another device is known from EP 0563474 A in which strips of fins are provided with a hydrophilic resin coating for use in the evaporator of a car air-conditioner.
  • the coating is applied to the fins to improve drainage of the condensed water.
  • the coating effectively completely covers the entire fin and is not considered suitable for retaining water for evaporation and for use as an evaporative cooler.
  • an improved heat exchange element comprising a heat exchange membrane and a plurality of fins connected to the membrane, the fins comprising a formable, flexible laminate of at least a heat conducting layer and a water retaining fibrous layer.
  • the laminate may thus be conveniently formed into any desired fin shapes by known manufacturing procedures while ensuring the integrity of both the heat conducting layer and the water retaining layer.
  • the water retaining layer is a woven or knitted fibrous layer. Fibres such as mineral wool may be considered.
  • the fibrous layer may be attached to the heat conducting or carrier layer by adhesives or other similar methods.
  • the adhesive and the fibrous material should be such that delaminating does not take place on forming of the laminate into a desired shape. In the case of corrugation of the laminate, it may for instance be desirable to align the weave of a woven fibrous material with the intended corrugation.
  • the adhesive may be chosen to enhance the properties of the carrier layer or water retaining layer. Thus the adhesive may be chosen to have water-retaining properties or heat conducting properties, or both and may thus be considered to form a part of either of these layers.
  • Adhesive may be provided on both sides of the carrier layer prior to or during the lamination process.
  • the adhesive on a first side of the carrier layer may serve to attach the water retaining layer while the adhesive on a second side may serve to attach the formed laminate to the membrane.
  • Preferably at least the adhesive on the second side of the carrier layer is a heat activated adhesive.
  • the fins are provided on both surfaces of the membrane. Heat transfer can then take place from a first fin, through the membrane to a second oppositely located fin.
  • the heat conducting layer will be directly connected to the membrane to ensure good heat transmission thereto.
  • the heat conducting carrier layer may only be partially covered by the water retaining layer.
  • the heat exchange laminate may comprise covered and uncovered areas of the carrier layer, possibly in the form of a repeating pattern of bands or ribs of hydrophilic material followed by bands of uncovered carrier layer.
  • the heat conducting layer is formed of a metal, preferably soft annealed aluminium.
  • the aluminium may be in the form of a foil having a thickness of between 30 and 150 microns. More preferably, the foil has a thickness of between 50 and 100 microns, ideally about 70 microns.
  • One of the major advantages of such aluminium is that it is relatively cheap and very easy to form. It is also extremely light yet structurally very strong. Copper may also be used but is somewhat heavier. Other metals may also be considered depending upon price and weight considerations and also on the area of intended use.
  • the fins may be provided with louvres.
  • the use of such louvres is extremely advantageous in the case of a carrier provided with a water retaining layer on only a first surface.
  • the louvres may serve to guide fluid flow from the first surface to the second surface and vice- versa. Since the second surface is not covered by the liquid retaining layer, direct thermal heat transfer from the carrier layer to the fluid is enhanced.
  • a dewpoint cooler comprising a heat exchange element as described above.
  • the dewpoint cooler further comprises a first medium channel and a second medium channel separated from one another by the membrane, through which two channels first and second media can flow in counterflow for heat exchange through the membrane, wherein the fins serve to increase the effective heat-conducting surface area of the membrane and the water retaining layer in at least the region of the second medium can absorb an evaporable liquid, for instance water, by capillary action, retain it and relinquish it again through evaporation, such that the wetted water retaining layer and thereby also the heat-conducting layer are cooled.
  • an evaporable liquid for instance water
  • the dewpoint cooler comprises at least one source of fluid pressure for causing circulation of the media through the first and second medium channels.
  • This source of fluid pressure may be a fan or other form of blower well known in the art or may be provided by natural means such as wind or vehicle movement.
  • a bypass may be provided between the first medium channel and the second medium channel for circulation of a part of the first medium to form the flow of second medium.
  • a single fan may provide for circulation of the media in both channels.
  • the dewpoint cooler may also comprise a wetting unit for subjecting the water retaining layer in at least the region of the second medium to wetting by the evaporable liquid.
  • a method of manufacturing a heat exchange element comprising providing a strip of heat conducting material, providing a water retaining layer in the form of a flexible mat, covering one side of the strip with the mat to form a laminate, forming the laminate into corrugations to form a series of fins and connecting the fins to a heat exchange membrane, whereby uncovered peaks of the corrugations are connected in a heat transmitting manner to the membrane.
  • the mat may comprise a fibrous cloth or may be formed by spraying a mixture of fibres and adhesive onto the strip.
  • the fins are generally elongate for aligning with the medium flow direction.
  • the carrier layer is formed of a metal e.g. aluminium, such fins may easily be formed by roll forming machines. Openings or louvres may be made through the fins at this stage. While reference has generally been made to fins, this definition is understood to encompass other shapes of flow break up means including but not limited to dimples, ridges, grooves etc. In order to be able to effectively form such fins, louvres and other break up means, it is important that the carrier layer and water retaining layer are well bonded together to prevent unwanted delaminating or other disturbance to the integrity of the laminate.
  • the laminate may be attached to the membrane by adhesive.
  • Prior art heat exchangers have generally been formed by soldering and brazing techniques.
  • the joining of the fins to the membrane by adhesive may permit a rapid, inexpensive and light assembly.
  • heat and pressure activated adhesives are favoured which may be provided as an integral part of the laminate or the membrane prior to forming and joining.
  • the method may comprise providing fins on both surfaces of the membrane for heat transfer thereto.
  • a tubular structure may then be formed with fins on both an interior and exterior surface of the tubular structure.
  • the tubular structure may be formed by placing two similar membranes together and sealing them along parallel edges.
  • a single membrane may be folded or rolled into any desired configuration such as a structure comprising a number of fluid channels.
  • the fins are generally aligned with an axis of the tubular structure.
  • Figure 1 is a perspective view of a section of heat exchange laminate according to the present invention.
  • Figure 2 is a perspective view of a heat exchange laminate formed into a strip of fins according to the present invention
  • FIG. 3 is a perspective view of a heat exchange element according to the present invention.
  • Figure 4 is a perspective view of a tubular structure comprising a number of heat exchange elements according to Figure 3 for use as a dewpoint cooler.
  • Laminate 1 comprises a heat conducting carrier layer 2 covered over its first surface by a fibrous hydrophilic liquid retaining layer 4.
  • a first adhesive 6 is provided between the carrier layer 2 and the fibrous layer 4.
  • a second adhesive 8 is also provided on the second surface of the carrier layer 2. In this embodiment, the presence of second adhesive 8 is optional and its function will be described in further detail below.
  • Carrier layer 2 is preferably formed of soft annealed aluminium having a thickness of approximately 70 microns. This material has been found to be extremely advantageous as it is light, easily formable and has good conductivity.
  • the aluminium is provided on both surfaces with a primer (not shown) to ensure adequate bonding with the adhesives 6, 8.
  • the primer is preferably a PVC based primer and may be coloured to provide a desirable appearance to the laminate 1. Further coatings e.g. to provide protection against corrosion may also be included.
  • aluminium is depicted in this embodiment, other metals having similar properties may also be used including copper, tin, zinc and other alloys and combinations. Alternatively, plastics and composite materials providing good heat conduction may also be used. The selection of the above materials will be evident to the skilled man and will be determined by the particular conditions under which the heat exchanger is intended to operate.
  • the fibrous layer 4 is formed from a non-woven material. Although reference is made to a liquid retaining surface, it is clearly understood that the surface is in fact a liquid retaining and releasing surface. Preferably, the fibrous layer 4 has a very open structure such that the it does not insulate the carrier layer 2 from the surrounding media.
  • An exemplary material for forming the fibrous layer 4 is a 20g/m 2 polyester/viscose 50/50 blend, available from Lantor B.V. in The Netherlands. Another exemplary material is a 30g/m 2 polyamide coated polyester fibre available under the name ColbackTM from Colbond N.V. in The Netherlands. Other materials having similar properties including synthetic and natural fibres such as wool may also be used.
  • the liquid retaining layer may be coated or otherwise treated to provide anti bacterial or other anti fouling properties. Alternatively the layer may be woven or knitted.
  • the first adhesive 6 is provided as a thin layer over the entire area of the laminate 1.
  • a 2 micron layer of a two component polyurethane adhesive has been found to provide excellent results.
  • its effect on heat transfer to the carrier layer 4 is negligible.
  • Figure 2 shows a strip 14 of heat exchange laminate 1 according to Figure 1, formed into a series of fins 16 having the liquid retaining layer 4 on a first upper surface thereof.
  • the fins 16 are each provided with louvres 18 in the form of elongate slots penetrating through the laminate 1 (only the louvres on the first fin are shown).
  • the louvres 18 are arranged in groups.
  • a first group 20 serves to direct flow into the surface, while a second group 22 directs flow out of the surface.
  • Air following the direction of arrow B will be directed outwardly by the second group of louvres. In this way, the air alternately flows over the first surface, where it can receive moisture by evaporation from the liquid retaining layer, followed by the second surface where it can receive direct thermal energy to raise its temperature.
  • louvres 18 In addition to their function in directing flow between the surfaces of the fins 16, louvres 18 also serve to further break up the boundary layers that may develop as air flows along the surfaces. Other break up elements may be provided in addition or instead of the louvres 18.
  • the fins 16 of Figure 2 are straight, curvilinear or zig-zag fins may also be produced. It is believed that such fin shapes are advantageous in breaking up the boundary layers that develop in flow along the fins, since each time the fin changes direction, turbulent flow is re-established.
  • Various cross-sectional shapes are also possible for the fins, including corrugations of square, trapezoidal, rectangular, bell and sine wave shapes. The precise shape will depend on various factors, one of which may be the ability of the liquid retaining layer 4 to resist bending.
  • fins 16 are provided with conduction bridges 24. These bridges 24 are in the form of cuts through the laminate 1 over substantially the whole height of the fin 16. They serve to prevent unwanted transport of heat along the fins 16 in the direction of the air flow.
  • the fins 16 are preferably formed using standard corrugation techniques. An appropriate width roll of the prepared laminate 1 may be fed through a pair of corrugated rollers which can form the fins 16, louvres 18 and heat bridges 24 in a single pass. The resulting product may then be cut into suitably sized strips 14 for further processing.
  • Figure 3 shows a possible construction 25 using the strip 14 of Figure 2. According to Figure 3 the fins 16 are attached to a first surface of a membrane 26. The membrane 26 is provided on its second surface with a second strip 28 of fins 30 similarly shaped to the fins 16 and which may also be provided with louvres and conduction bridges. The second strip 28 differs from the first strip 14 in that it does not comprise a liquid retaining layer.
  • the membrane 26 is generally impervious to the air or other fluid intended for use in the heat exchanger and serves to define a first fluid region X and a second fluid region Y.
  • a preferred material for the membrane is soft annealed aluminium of approximately 70 micron gauge.
  • the heat exchange laminate 1 forming heat exchange element 14 may have a second adhesive 8 on its second surface.
  • This second adhesive 8 is preferably a heat seal adhesive such as a PVC/polyacrylate based adhesive.
  • the membrane 26 is also provided with a similar or compatible heat seal adhesive on its surface facing the strip 14 whereby both membrane 26 and strip 14 may be easily joined together under appropriate heat and pressure.
  • the facing surfaces of second strip 28 and membrane 26 are also provided with similar heat seal adhesive and may be joined together in the same way. As can be seen from Figure 3, the strips 14 and 28 are joined in such a way that only the troughs of the fins 16, 30 are adhered to the membrane 26. Furthermore, the fins 16 and 30 are directly aligned with one another through the membrane 26.
  • the fluid region X may serve as the wet side of an evaporative heat exchanger or humidifying device, while region Y serves as the dry side.
  • the fins 16 comprising laminate 1 can take up a quantity of water in the liquid retaining layer 4. Non-saturated air flowing across the surface can absorb water by evaporation out of the laminate 1. In so doing, laminate 1 loses a quantity of heat corresponding to the latent heat of evaporation of the water lost. To maintain equilibrium, heat must be provided to the laminate 1. For a carrier layer 2 of aluminium, this takes place by conduction in the plane of the laminate from the membrane 26. This heat must in turn be supplied by the cooling of dry fluid in region Y and by conduction of this heat through the fins 30 to the membrane 26. The alignment of the fins 16, 30 improves heat transfer from one element to the other through the membrane 26.
  • a single side of the fins 16 is provided with a liquid retaining layer. It is however also possible to provide a liquid retaining layer on other surfaces too.
  • Membrane 26 may for instance also be formed of heat exchange laminate 1 , having the liquid retaining layer on its first surface facing the strip 14. It is also possible to use the heat exchange laminate 1 for forming the second strip 28 and/or to provide liquid retaining layers on both sides thereof. For laminates provided with a liquid retaining layer on both surfaces, additional measures and adhesive layers may be required to ensure joining to another surface.
  • the fins 16 and 30 are arranged to lie parallel to one another such that the heat exchanger may operate in counter flow.
  • the membrane may be provided with channels allowing some or all of the fluid in the region Y to pass across the membrane to region X. Such channels may be in the form of orifices through the membrane.
  • Other alternative arrangements are also possible with the two sets of fins angled with respect to each other for cross flow operation.
  • cross flow operation as a dew-point cooler, it may also be possible to provide orifices through the membrane between one or more of the fins 30 to serve as feeders for some or all of the channels between the fins 16 in the region X.
  • the construction 25 according to Figure 3 may be integrated into a heat exchanger such as a dew- point cooler in many different ways.
  • a number of like constructions 25 may be arranged parallel to one another to form a series of alternate fluid regions X and Y.
  • the construction 25 may be formed into a tubular structure by rolling or folding the membrane and heat sealing it to itself, whereby the region Y is located within the tube and the region X is located externally.
  • Figure 4 shows a possible tubular structure 32 that has been found particularly advantageous for the construction of dew-point coolers elements and heat recovery elements.
  • Tubular structure 32 comprises a pair of constructions 25 comprising membranes 26 that have been joined to one another at upper and lower longitudinal edges 34, 36.
  • Various methods for joining the edges 34, 36 may be used, but a preferred method for aluminium membranes 26 as described above is by heat sealing.
  • a wetting unit 50 provides an evaporable liquid.
  • each membrane 26 is provided with a plurality of srips 14, separated from one another by a short gap. This gap also serves as a form of conduction bridge to minimise heat conduction in the flow direction of the heat exchanger.
  • FIG 4 Also shown in Figure 4 is an inlet extension 38 (partially cut away) and an outlet extension 40 for the interior of the tubular structure 32. Both extensions 38, 40 are formed from sections of the membranes 26 without fins. A web 42 is also shown between the two constructions 25. The web 42 serves to improve structural stability and may be provided with holes to allow flow through it within the interior of the tubular structure 32.
  • one or more such tubular structures 32 are located within a suitable housing having an inlet communicating with the inlet extension and an outlet communicating with the outlet extension.
  • Flow C through the tubular structure 32 may be induced by a fan 52 provided at the inlet although other flow inducing means may also be used.
  • a portion of the flow D may be caused to recirculate in contraflow over the outside of the tubular structure 32.
  • the remainder of the flow E exits to the outlet for cooling of the desired space.
  • Liquid such as water supplied to the liquid retaining layer 4 by wetting unit 50 will then evaporate into the recirculating flow D providing the necessary cooling to the flow C within the tubular structure 32.
  • the recirculating flow D may then exhaust through a further exhaust opening provided in the housing.
  • a slight adaptation may be made for use also as a heat recovery device.
  • the housing may then be provided with a further inlet and possibly a second fan or other flow inducing device. Whichever flow is intended to be heated may also be provided with water supply to an appropriate liquid retaining layer for humidification purposes.
  • For heat recovery it is also particularly advantageous to provide both sides of the exchanger with laminates comprising liquid retaining layers according to the present invention, whereby condensation is retained and can be wicked away.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un élément échangeur de chaleur qui comporte un stratifié apte au formage constitué d'une couche conductrice de chaleur et d'une couche fibreuse retenant le liquide. Par construction d'un tel stratifié flexible constitué de deux couches, des propriétés voulues peuvent être conférées à l'élément échangeur de chaleur par formage. Ce stratifié peut de façon pratique être formé en des ailettes échangeuses de chaleur et fixé à une membrane échangeuse de chaleur pour une incorporation à un échangeur de chaleur. Cet échangeur de chaleur peut être utilisé pour refroidir un premier fluide par évaporation d'un liquide en un second fluide fonctionnant à son point de saturation ou proche de celui-ci.
PCT/EP2004/009366 2003-08-20 2004-08-20 Element echangeur de chaleur WO2005019739A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04764348A EP1668297A1 (fr) 2003-08-20 2004-08-20 Element echangeur de chaleur

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL1024143 2003-08-20
NL1024143A NL1024143C1 (nl) 2003-08-20 2003-08-20 Werkwijze voor het vervaardigen van vinnen voor een dauwpuntskoeler, alsmede met de werkwijze verkregen strook vinnen.
GB0324348.2 2003-10-17
GBGB0324348.2A GB0324348D0 (en) 2003-10-17 2003-10-17 Heat exchange laminate

Publications (1)

Publication Number Publication Date
WO2005019739A1 true WO2005019739A1 (fr) 2005-03-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/009366 WO2005019739A1 (fr) 2003-08-20 2004-08-20 Element echangeur de chaleur

Country Status (2)

Country Link
EP (1) EP1668297A1 (fr)
WO (1) WO2005019739A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005040693A2 (fr) * 2003-10-17 2005-05-06 Oxycell Holding Bv Stratifie a echange thermique
WO2006008184A1 (fr) * 2004-07-23 2006-01-26 Oxycell Holding B.V. Echangeur de chaleur plie
DE102006006770A1 (de) * 2006-02-13 2007-08-23 Behr Gmbh & Co. Kg Leiteinrichtung, insbesondere Wellrippe, für einen Wärmeübertrager
WO2012028438A1 (fr) * 2010-08-28 2012-03-08 Khd Humboldt Wedag Gmbh Paroi latérale refroidie pour une presse à rouleaux
AU2006326947B2 (en) * 2005-12-22 2013-10-31 Oxycom Beheer B.V. Evaporative cooling device
US9689626B2 (en) 2006-11-09 2017-06-27 Oxycom Beheer B.V. High efficiency heat exchanger and dehumidifier
WO2018069393A1 (fr) * 2016-10-13 2018-04-19 University Of Hull Appareil échangeur de chaleur
US10247483B2 (en) 2008-09-23 2019-04-02 Oxycom Beheer B.V. Evaporative cooling device

Citations (10)

* Cited by examiner, † Cited by third party
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FR2318397A1 (fr) * 1975-07-17 1977-02-11 Aero Flow Dynamics Inc Echangeur de chaleur et d'humidite et procede pour le former
US4172164A (en) * 1977-06-02 1979-10-23 Swiss Aluminium Ltd. Metal strip for the production of heat exchangers
US4758385A (en) * 1987-06-22 1988-07-19 Norsaire Systems Plate for evaporative heat exchanger and evaporative heat exchanger
US4769053A (en) * 1987-03-26 1988-09-06 Semco Mfg., Inc. High efficiency sensible and latent heat exchange media with selected transfer for a total energy recovery wheel
US5301518A (en) * 1992-08-13 1994-04-12 Acma Limited Evaporative air conditioner unit
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CN109952486A (zh) * 2016-10-13 2019-06-28 赫尔大学 热交换器设备
EP3907462A1 (fr) * 2016-10-13 2021-11-10 University of Hull Appareil d'échange de chaleur
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