WO2018060601A1 - Tube with reservoir of phase change material for an evaporator, associated evaporator and air conditioning assembly - Google Patents

Tube with reservoir of phase change material for an evaporator, associated evaporator and air conditioning assembly Download PDF

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Publication number
WO2018060601A1
WO2018060601A1 PCT/FR2017/052606 FR2017052606W WO2018060601A1 WO 2018060601 A1 WO2018060601 A1 WO 2018060601A1 FR 2017052606 W FR2017052606 W FR 2017052606W WO 2018060601 A1 WO2018060601 A1 WO 2018060601A1
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WO
WIPO (PCT)
Prior art keywords
change material
phase change
evaporator
tube
cavities
Prior art date
Application number
PCT/FR2017/052606
Other languages
French (fr)
Inventor
Kamel Azzouz
Bastien Jovet
Original Assignee
Valeo Systemes Thermiques
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 Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Priority to CN201780067381.7A priority Critical patent/CN109923364A/en
Priority to EP17787475.7A priority patent/EP3519750A1/en
Priority to US16/337,252 priority patent/US20200132379A1/en
Publication of WO2018060601A1 publication Critical patent/WO2018060601A1/en

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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
    • F28D1/00—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 is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0325—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • F28D1/0333—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members
    • 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
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • 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
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0004—Particular heat storage apparatus
    • F28D2020/0008—Particular heat storage apparatus the heat storage material being enclosed in plate-like or laminated elements, e.g. in plates having internal compartments
    • 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
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0004—Particular heat storage apparatus
    • F28D2020/0013—Particular heat storage apparatus the heat storage material being enclosed in elements attached to or integral with heat exchange conduits
    • 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
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0091—Radiators
    • F28D2021/0096—Radiators for space heating
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • Tube with phase change material tank for evaporator, evaporator and associated air conditioning assembly Tube with phase change material tank for evaporator, evaporator and associated air conditioning assembly.
  • the present invention relates to a tube of material for phase change material for heat exchanger heat exchange beam, particularly in the field of thermal management in a motor vehicle.
  • the heat exchangers generally comprise a bundle of parallel tubes formed of plates containing a first coolant, for example a refrigerant in the case of an air conditioning system evaporator.
  • the beam is also traversed by a second coolant, for example a flow of air for the passenger compartment, sweeping the tubes whose surface, increased by the addition of interfering or spacers between the tubes, optimizes the heat exchange.
  • phase change material associated with the tubes of the beam for the circulation of the first heat transfer fluid.
  • Such exchangers for example in the case of an evaporator of an air conditioning circuit, make it possible to maintain the cooling of a passenger compartment of the vehicle during a given period of time, especially when the vehicle engine is stationary and does not moreover causes the refrigerant circulation compressor, in particular for vehicles equipped with an automatic engine shutdown system during short stops of the vehicle. In these periods of stopping the engine, the phase change material captures heat energy to the air passing through the evaporator so as to cool it.
  • an evaporator for a vehicle air conditioning circuit comprising a heat exchange bundle provided with a set of refrigerant circulation tubes, a storage tank of phase change material being attached to the tubes. and an air passage being provided between the tubes and the cold storage tanks, in particular by protrusions and recessions formed between them.
  • One of the aims of the present invention is to at least partially overcome the drawbacks of the prior art and to propose an improved tube of material with phase change for a more efficient use within a heat exchange bundle a heat exchanger.
  • the present invention therefore relates to a tube for a heat exchange bundle of a vehicle heat exchanger, said tube comprising:
  • At least one tank plate comprising cavities, said tank plate being configured to come together sealingly on one face of one of the two circulation plates so as to close the cavities, said cavities being projecting on the face of the reservoir plate so that a second heat transfer fluid can circulate between said cavities, said tube further comprising a phase change material stored in housings formed by said cavities, said phase change material having a solidification temperature of between 6 and 8 degrees Celsius.
  • phase change material having these characteristics makes it possible to limit the excessive temperature variation at the outlet of the evaporator and thus gives the possibility of cycling to certain components of the air conditioning circuit. , such as the compressor, so as to reduce the consumption of the air conditioning loop.
  • phase change material having such a solidification temperature allows the possibility of a bypass (or bypass) of the evaporator by a part of the flow passing through the air conditioning loop.
  • the phase change material has a solidification onset temperature of between 7.5 and 8 degrees Celsius.
  • the phase-change material has a melting point of between 7 and 9 degrees Celsius.
  • the phase change material has a latent heat of fusion of between 130 kJ / kg.K and 250 kJ / kg.K
  • the phase change material is a paraffin.
  • the phase-change material is a fatty acid.
  • the invention also relates to an evaporator for a motor vehicle air conditioning circuit, the evaporator comprising a plurality of tubes according to one of the embodiments presented above.
  • the invention also relates to an air conditioning assembly for a motor vehicle, said assembly being traversed by an air flow, the assembly comprising at least one evaporator according to the invention, the air flow bypassing at least partially the evaporator.
  • the flow of air leaving the evaporator is at a temperature between ⁇ and 12 degrees Celsius.
  • the flow of air leaving the evaporator is at a temperature of between 1 degree and 12 degrees Celsius makes it possible to have a substantially stabilized temperature and thus to make it possible to circumvent, at least partially, the evaporator by the airflow and thus further reduce the consumption of the air conditioning loop.
  • FIG. 1 shows a diagrammatic representation in perspective of an evaporator according to one embodiment of the invention
  • FIG. 2 shows a schematic representation in perspective of a tube with a material reservoir with phase change according to a particular embodiment of the invention
  • Figure 3 is a graph showing the state of the phase change material of the invention as a function of its temperature.
  • the phase change material reservoir tube 1 comprises two circulation plates 3 and at least one reservoir plate 5.
  • the two circulation plates 3 are configured to be assembled to one another in a sealed manner and to form at least one duct 31 in which a first coolant circulates between said circulation plates 3.
  • the two circulation plates 3 are preferably identical and contiguous to one another in "mirror", which makes it possible to have only one type of circulation plate 3 to produce and thus allows to save money during production.
  • the at least one tank plate 5 has in turn cavities 51 and is configured to come together sealingly on one side of one of the two circulation plates 3 so as to close the cavities 51 and form housings of the phase change material. These cavities 51 are projecting on one face of the tank plate 5 so that a second heat transfer fluid, for example a flow of air, can circulate between said cavities 51.
  • a second heat transfer fluid for example a flow of air
  • the tank plate is assembled on an outer face of one of the two circulation plates.
  • tank plate would be made differently and would be attached to another face.
  • phase change material reservoir tube 1 In order to produce the phase change material reservoir tube 1, there are only two different types of plates used, namely two circulation plates 3 and at least one reservoir plate 5. Such a design allows to limit the production of such a tank tube to these two types of plates, thus generating savings in production costs. In addition, because of this reduced number of plate types, the mounting is simplified.
  • phase change material reservoir tube ⁇ An additional advantage of the phase change material reservoir tube ⁇ is that the phase change material is directly in contact with the circulation plate 3, which facilitates and improves the heat energy exchange between the first heat transfer fluid and the phase change material.
  • the circulation plates 3 may also comprise recesses 32 preferably made by stamping in a homogeneous distribution over the entire circulation plate 3.
  • the circulation plates 3 comprise an external face intended to be oriented towards either a reservoir plate 5 , or a heat exchange element with the second heat transfer fluid, such as a corrugated plate.
  • Each circulation plate 3 comprises an internal face opposite to the external face from which each recess 32 extends so that their summit part is in contact with the adjacent circulation plate 3. According to a preferred embodiment, but not limiting , the recesses 32 are staggered on the circulation plate 3.
  • each recess 32 Due to such a distribution, the inner face of each recess 32 is in the flow path of the first fluid defined by the conduit 31, while the outer face can form a local reserve of phase change material, thereby increasing their heat exchange. Since the outer face of the circulation plate 3 is provided with recesses 32, the latter form complementary reserves of phase-change material so that for a given space, a tube with a reservoir 5 of phase-change material is provided. such recesses 32 allow increased storage of phase change material. This has the effect of increasing the time during which the phase change material exchanges heat energy with the second fluid. In addition, since the recesses 32 form additional connections with the adjacent circulation plate 3, the mechanical strength of the phase change material reservoir tube 1 is increased.
  • phase change material reservoir tube 1 may be used in an evaporator type heat exchanger which is adapted to receive a refrigerant fluid having a nominal pressure of approximately 15 bar.
  • the phase change material tank tube 1 comprises a single tank plate 5, on one of its external faces in contact with the second heat transfer fluid. The other of its faces is in contact with a corrugated heat exchange plate with the second heat transfer fluid, such corrugated plate being sometimes called fin or spacer.
  • the tube 1 may nevertheless comprise a tank plate with a reservoir of phase change material 1 on each of its outer faces in contact with the second heat transfer fluid.
  • the phase change material reservoir tube 1 may comprise a common filling orifice of the projecting cavities 51 of the two tank plates 5.
  • the protruding cavities 51 have a domed shape. These domes are more particularly staggered so that the second heat transfer fluid can flow between them.
  • the projecting cavities 51 have an oblong shape.
  • the projecting cavities 51 are then distributed in "V" with respect to the longitudinal axis A of the tank plate 5 as shown in FIG.
  • This particular shape and distribution allows the phase change material reservoir tube 1 to contain a larger quantity of phase change material than for the dome shape and also allows the pressure drops of the second heat transfer fluid to be limited during its passage between the projecting cavities 51.
  • the exchange tube 30 may be a tube provided with micro channels, such a tube being derived from the superposition of flat plates and a corrugated plate, the latter being sometimes referred to as internal spacer, said corrugated plate being then disposed between the two adjacent flat plates to form the micro-channels.
  • the exchange tube 30 may more particularly be composed of two circulation plates 3, as previously described, assembled to one another in a sealed manner.
  • the heat exchange bundle 100 here comprises, distributed over its entire length, three tubes of phase change material tank 1. Two of these phase change material tank tubes 1 comprise a tank plate 5 on each of their external faces in contact with the second heat transfer fluid.
  • the third tube containing material of phase change material 1 has only a single tank plate 5 on one of its outer faces in contact with the second heat transfer fluid.
  • the total number of phase change material tank tubes 1 and reservoir plates 5 present within a heat exchange bundle 100 is a function of its size and length. The longer the heat exchange bundle 100, the greater this number is in order to ensure a cooling of the second heat transfer fluid continues and even if the first heat transfer fluid circulates more in said beam, for example during a shutdown of the compressor.
  • the tube containing phase change material 1 because it is composed of two circulation plates 3 and at least one tank plate 5, allows simple assembly and inexpensive manufacture.
  • the phase-change material is directly in contact with the circulation plate 3 which facilitates and improves heat energy exchange between the first heat transfer fluid and the phase change material.
  • a phase change material is chosen for which the melting temperature is lowered so as to allow the evaporation of the evaporator by a part of the air flow. This bypass reduces the consumption of the air conditioning loop as a whole.
  • the temperature of the air flow leaving the evaporator must be between 4 degrees Celsius and 12 degrees Celsius.
  • the saturation temperature of the coolant conventionally used is at about o degrees Celsius.
  • phase change material sufficiently high to be compatible with the temperature of the heat transfer fluid when the air conditioning assembly is operating, and low enough for the phase change material to be be liquefied before the airflow temperature reaches 12 degrees Celsius.
  • the phase change material can be selected in accordance with FIG. plurality of factors.
  • the phase-change material therefore has a solidification temperature of between 6 and 8 degrees Celsius. It is also possible to implement, according to a particular embodiment, a phase-change material which has a melting point of between 7 and 9 degrees Celsius. In a particular embodiment of the invention, which corresponds to the embodiment detailed here, the phase change material has a latent heat of fusion of between 130 kJ / kg.K and 250 kJ / kg.K.
  • phase-change material it will be possible for example to choose a paraffin.
  • phase change material among the fatty acids.
  • This phase-change material may for example be composed of an ester, such as tetradecanoic acid-methylethyl ester. In a variant, it may be composed of 99% of tetradecanoic acid-methylethyl ester, to which one or more additives are added.
  • the solidification of the phase-change material can preferably take place during a braking phase of the vehicle, this being made possible by an increase in the displacement of a compressor, since the consumption of a compressor is zero during a braking phase and a braking phase often precedes a stopping phase of the vehicle.
  • This air conditioning assembly for a motor vehicle, traversed by a flow of air may comprise, in addition to the evaporator, a compressor and a shutter circuit implemented within a complete air conditioning device.
  • the presence of the compressor allows the airflow to at least partially bypass the evaporator. It should be noted that the air flow is, at the outlet of the evaporator, at a temperature between 1 and 12 degrees Celsius.

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

Abstract

The invention relates to a tube (1) for a heat exchange bundle (100) of a vehicle heat exchanger, said tube (1) comprising: - two circulation plates (3) configured to be assembled together in a sealed manner and to form at least one conduit (31) in which a first heat transfer fluid circulates between said circulation plates (3), - at least one reservoir plate (5) comprising cavities (51), said reservoir plate (5) being configured to be assembled in a sealed manner on a face of one of the two circulation plates (3) so as to close the cavities (51), the cavities (51) being projections on the face of the reservoir plate (5) such that a second heat transfer fluid can circulate between the cavities (51), the tube (1) further containing a phase change material stored in the housings formed by the cavities (51), the phase change material having a solidification temperature between 6 and 8 degrees Celsius.

Description

Tube à réservoir de matériau à changement de phase pour évaporateur, évaporateur et ensemble de climatisation associés.  Tube with phase change material tank for evaporator, evaporator and associated air conditioning assembly.
La présente invention concerne un tube à réservoir de matériau à changement de phases pour faisceau d'échange de chaleur d'échangeur de chaleur, notamment dans le domaine de la gestion thermique au sein d'un véhicule automobile. The present invention relates to a tube of material for phase change material for heat exchanger heat exchange beam, particularly in the field of thermal management in a motor vehicle.
Les échangeurs de chaleur comprennent généralement un faisceau de tubes parallèles formés de plaques contenant un premier fluide caloporteur, par exemple un fluide réfrigérant dans le cas d'un évaporateur de circuit de climatisation. Le faisceau est également traversé par un second fluide caloporteur, par exemple un flux d'air destiné à l'habitacle, balayant les tubes dont la surface, augmentée par l'ajout de perturbateurs ou intercalaires entre les tubes, optimise l'échange thermique. The heat exchangers generally comprise a bundle of parallel tubes formed of plates containing a first coolant, for example a refrigerant in the case of an air conditioning system evaporator. The beam is also traversed by a second coolant, for example a flow of air for the passenger compartment, sweeping the tubes whose surface, increased by the addition of interfering or spacers between the tubes, optimizes the heat exchange.
Il est connu de pourvoir ces échangeurs de chaleur de réservoirs de matériau à changement de phases associés aux tubes du faisceau servant à la circulation du premier fluide caloporteur. De tels échangeurs par exemple dans le cas d'un évaporateur d'un circuit de climatisation, permettent de maintenir le refroidissement d'un habitacle du véhicule pendant une période de temps donnée notamment lorsque le moteur du véhicule est à l'arrêt et n'entraîne plus le compresseur de mise en circulation du fluide réfrigérant, notamment pour les véhicules munis d'un système d'arrêt automatique du moteur lors des arrêts courts du véhicule. Dans ces périodes d'arrêt du moteur, le matériau à changement de phase capte de l'énergie calorifique à l'air traversant l'évaporateur de sorte à le refroidir. Il est ainsi connu en particulier un évaporateur pour circuit de climatisation de véhicule, comprenant un faisceau d'échange de chaleur pourvu d'un ensemble de tubes de circulation du fluide réfrigérant, un réservoir de stockage de matériau à changement de phases étant accolé aux tubes et un passage d'air étant prévu entre les tubes et les réservoirs de stockage de froid, notamment par des protusions et récessions formées entre ces derniers. It is known to provide these heat exchangers tanks of phase change material associated with the tubes of the beam for the circulation of the first heat transfer fluid. Such exchangers, for example in the case of an evaporator of an air conditioning circuit, make it possible to maintain the cooling of a passenger compartment of the vehicle during a given period of time, especially when the vehicle engine is stationary and does not moreover causes the refrigerant circulation compressor, in particular for vehicles equipped with an automatic engine shutdown system during short stops of the vehicle. In these periods of stopping the engine, the phase change material captures heat energy to the air passing through the evaporator so as to cool it. It is thus known in particular an evaporator for a vehicle air conditioning circuit, comprising a heat exchange bundle provided with a set of refrigerant circulation tubes, a storage tank of phase change material being attached to the tubes. and an air passage being provided between the tubes and the cold storage tanks, in particular by protrusions and recessions formed between them.
Toutefois, de tels circuits de climatisation sont relativement consommateurs, notamment en terme d'énergie et le temps de confort thermique des utilisateurs n'est pas optimisé, notamment en été et en agglomération, où les embouteillages et de ce fait les arrêts du véhicule, sont particulièrement fréquents. However, such air conditioning circuits are relatively consumer, especially in terms of energy and thermal comfort time users is not optimized, especially in summer and agglomeration, where traffic jams and thus the stops of the vehicle, are particularly common.
Un des buts de la présente invention est de remédier au moins partiellement aux inconvénients de l'art antérieur et de proposer un tube à réservoir de matériau à changement de phases amélioré pour une utilisation plus efficace au sein d'un faisceau d'échange de chaleur d'un échangeur de chaleur. La présente invention concerne donc un tube pour faisceau d'échange de chaleur d'un échangeur de chaleur de véhicule, ledit tube comportant : One of the aims of the present invention is to at least partially overcome the drawbacks of the prior art and to propose an improved tube of material with phase change for a more efficient use within a heat exchange bundle a heat exchanger. The present invention therefore relates to a tube for a heat exchange bundle of a vehicle heat exchanger, said tube comprising:
- deux plaques de circulation configurées pour être assemblées l'une à l'autre de façon étanche et former au moins un conduit dans lequel circule un premier fluide caloporteur entre lesdites plaques de circulation,  two circulation plates configured to be assembled to one another in a sealed manner and to form at least one duct in which a first coolant circulates between said circulation plates,
- au moins une plaque réservoir comportant des cavités, ladite plaque réservoir étant configurée pour venir s'assembler de façon étanche sur une face d'une des deux plaques de circulation de sorte à refermer les cavités, lesdites cavités étant saillantes sur la face de la plaque réservoir de sorte qu'un second fluide caloporteur puisse circuler entre lesdites cavités, ledit tube comportant en outre un matériau à changement de phase stocké dans des logements formés par lesdites cavités, ledit matériau à changement de phase présentant une température de solidification comprise entre 6 et 8 degrés Celsius. at least one tank plate comprising cavities, said tank plate being configured to come together sealingly on one face of one of the two circulation plates so as to close the cavities, said cavities being projecting on the face of the reservoir plate so that a second heat transfer fluid can circulate between said cavities, said tube further comprising a phase change material stored in housings formed by said cavities, said phase change material having a solidification temperature of between 6 and 8 degrees Celsius.
Ainsi, la mise en œuvre d'un matériau à changement de phase présentant ces caractéristiques permet de limiter la variation de température trop importante en sortie de l'évaporateur et donne donc la possibilité de réaliser un cyclage au niveau de certains composants du circuit de climatisation, tel que le compresseur, de sorte à réduire la consommation de la boucle de climatisation. Thus, the implementation of a phase change material having these characteristics makes it possible to limit the excessive temperature variation at the outlet of the evaporator and thus gives the possibility of cycling to certain components of the air conditioning circuit. , such as the compressor, so as to reduce the consumption of the air conditioning loop.
En d'autres termes, le fait de mettre en œuvre un matériau à changement de phase présentant une telle température de solidification laisse la possibilité de réaliser un bypass (ou contournement) de l'évaporateur par une partie du flux traversant la boucle de climatisation. In other words, the fact of implementing a phase change material having such a solidification temperature allows the possibility of a bypass (or bypass) of the evaporator by a part of the flow passing through the air conditioning loop.
Dans un aspect particulier de l'invention, le matériau à changement de phase présente une température de début de solidification comprise entre 7,5 et 8 degrés Celsius. In a particular aspect of the invention, the phase change material has a solidification onset temperature of between 7.5 and 8 degrees Celsius.
Selon un aspect particulier de l'invention, le matériau à changement de phase présente une température de fusion comprise entre 7 et 9 degrés Celsius. According to a particular aspect of the invention, the phase-change material has a melting point of between 7 and 9 degrees Celsius.
Selon un mode de réalisation particulier de l'invention, le matériau à changement de phase présente une chaleur latente de fusion comprise entre 130 kJ/kg.K et 250 kJ/kg.K According to a particular embodiment of the invention, the phase change material has a latent heat of fusion of between 130 kJ / kg.K and 250 kJ / kg.K
Dans un mode de réalisation de l'invention, le matériau à changement de phase est une paraffine. Selon une variante de l'invention, le matériau à changement de phase est un acide gras. In one embodiment of the invention, the phase change material is a paraffin. According to a variant of the invention, the phase-change material is a fatty acid.
L'invention concerne également un évaporateur pour circuit de climatisation de véhicule automobile, l'évaporateur comprenant une pluralité de tubes selon l'un des modes de réalisation présentés précédemment. The invention also relates to an evaporator for a motor vehicle air conditioning circuit, the evaporator comprising a plurality of tubes according to one of the embodiments presented above.
L'invention concerne encore un ensemble de climatisation pour véhicule automobile, ledit ensemble étant traversé par un flux d'air, l'ensemble comprenant au moins un évaporateur selon l'invention, le flux d'air contournant au moins partiellement l'évaporateur. The invention also relates to an air conditioning assembly for a motor vehicle, said assembly being traversed by an air flow, the assembly comprising at least one evaporator according to the invention, the air flow bypassing at least partially the evaporator.
Selon un mode de réalisation de l'invention, le flux d'air sortant de l'évaporateur est à une température comprise entre ι et 12 degrés Celsius. According to one embodiment of the invention, the flow of air leaving the evaporator is at a temperature between ι and 12 degrees Celsius.
Le fait que le flux d'air sortant de l'évaporateur soit à une température comprise entre 1 degré et 12 degrés Celsius permet d'avoir une température sensiblement stabilisée et donc de rendre réalisable le contournement, au moins partiel, de l'évaporateur par le flux d'air et donc de réduire plus encore la consommation de la boucle de climatisation. The fact that the flow of air leaving the evaporator is at a temperature of between 1 degree and 12 degrees Celsius makes it possible to have a substantially stabilized temperature and thus to make it possible to circumvent, at least partially, the evaporator by the airflow and thus further reduce the consumption of the air conditioning loop.
D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante, donnée à titre d'exemple illustratif et non limitatif, et des dessins annexés parmi lesquels : Other features and advantages of the invention will emerge more clearly on reading the following description, given by way of illustrative and nonlimiting example, and the appended drawings among which:
- la figure 1 montre une représentation schématique en perspective d'un évaporateur selon un mode de réalisation de l'invention,  FIG. 1 shows a diagrammatic representation in perspective of an evaporator according to one embodiment of the invention,
la figure 2 montre une représentation schématique en perspective d'un tube à réservoir de matériau à changement de phase selon un mode de réalisation particulier de l'invention, et la figure 3 est un graphique représentant l'état du matériau à changement de phase de l'invention en fonction de sa température. FIG. 2 shows a schematic representation in perspective of a tube with a material reservoir with phase change according to a particular embodiment of the invention, and Figure 3 is a graph showing the state of the phase change material of the invention as a function of its temperature.
Sur les différentes figures, les éléments identiques portent les mêmes numéros de référence.  In the different figures, the identical elements bear the same reference numbers.
Comme illustré, le tube à réservoir de matériau à changement de phase 1 comporte deux plaques de circulation 3 et au moins une plaque réservoir 5. As illustrated, the phase change material reservoir tube 1 comprises two circulation plates 3 and at least one reservoir plate 5.
Les deux plaques de circulation 3 sont configurées pour être assemblées l'une à l'autre de façon étanche et pour former au moins un conduit 31 dans lequel circule un premier fluide caloporteur entre lesdites plaques de circulation 3. Les deux plaques de circulations 3 sont de préférence identiques et accolées l'une à l'autre en « miroir », ce qui permet de n'avoir qu'un seul type de plaque de circulation 3 à produire et donc permet d'effectuer des économies lors de la production. The two circulation plates 3 are configured to be assembled to one another in a sealed manner and to form at least one duct 31 in which a first coolant circulates between said circulation plates 3. The two circulation plates 3 are preferably identical and contiguous to one another in "mirror", which makes it possible to have only one type of circulation plate 3 to produce and thus allows to save money during production.
L'au moins une plaque réservoir 5 comporte quant à elle des cavités 51 et est configurée pour venir s'assembler de façon étanche sur une face d'une des deux plaques de circulation 3 de sorte à refermer les cavités 51 et former des logements du matériau à changement de phase. Ces cavités 51 sont saillantes sur une face de la plaque réservoir 5 de sorte qu'un second fluide caloporteur, par exemple un flux d'air, puisse circuler entre lesdites cavités 51. The at least one tank plate 5 has in turn cavities 51 and is configured to come together sealingly on one side of one of the two circulation plates 3 so as to close the cavities 51 and form housings of the phase change material. These cavities 51 are projecting on one face of the tank plate 5 so that a second heat transfer fluid, for example a flow of air, can circulate between said cavities 51.
Dans le mode de réalisation illustré, la plaque réservoir vient s'assembler sur une face externe d'une des deux plaques de circulation. In the illustrated embodiment, the tank plate is assembled on an outer face of one of the two circulation plates.
Toutefois, on pourrait prévoir d'autres modes de réalisation dans lesquels la plaque réservoir serait faite différemment et serait fixée à une autre face.  However, there could be other embodiments in which the tank plate would be made differently and would be attached to another face.
Afin de réaliser le tube à réservoir de matériau à changement de phase 1, il n'y a que deux types différents de plaques utilisées, à savoir deux plaques de circulation 3 et au moins une plaque réservoir 5. Une telle conception permet de limiter la production d'un tel tube à réservoir à ces deux types de plaques, engendrant par conséquent des économies dans les coûts de production. De plus, de par ce nombre réduit de types de plaques, le montage est simplifié. In order to produce the phase change material reservoir tube 1, there are only two different types of plates used, namely two circulation plates 3 and at least one reservoir plate 5. Such a design allows to limit the production of such a tank tube to these two types of plates, thus generating savings in production costs. In addition, because of this reduced number of plate types, the mounting is simplified.
Un avantage supplémentaire du tube à réservoir de matériau à changement de phase ι est que le matériau à changement de phase est directement au contact de la plaque de circulation 3, ce qui facilite et améliore les échanges d'énergie calorifique entre le premier fluide caloporteur et le matériau à changement de phase. Les plaques de circulation 3 peuvent également comprendre des creux 32 réalisées de préférence par emboutissage selon une répartition homogène sur l'intégralité de la plaque de circulation 3. Les plaques de circulation 3 comprennent une face externe destinée à être orientée vers soit une plaque réservoir 5, soit un élément d'échange thermique avec le second fluide caloporteur, telle une plaque ondulée. Chaque plaque de circulation 3 comprend une face interne opposée à la face externe depuis laquelle s'étend chaque creux 32 de telle sorte que leur partie sommitale est en contact avec la plaque adjacente de circulation 3.Selon un mode de réalisation préféré, mais non limitatif, les creux 32 sont répartis en quinconce sur la plaque de circulation 3. Du fait d'une telle répartition, la face intérieure de chaque creux 32 se trouve dans la voie d'écoulement du premier fluide délimitée par le conduit 31, tandis que la face extérieure peut former une réserve locale de matériau à changement de phase, augmentant de la sorte leur échange thermique. Du fait que la face externe de la plaque de circulation 3 est pourvue de creux 32, ces derniers forment des réserves complémentaires de matériau à changement de phase de sorte que pour un encombrement donné, un tube à réservoir 5 de matériau à changement de phase pourvu de telles creux 32 permet un stockage augmenté de matériau à changement de phase. Cela a pour effet d'augmenter le temps durant lequel le matériau à changement de phase échange de l'énergie calorifique avec le second fluide. En outre, compte tenu du fait que les creux 32 forment des liaisons supplémentaires avec la plaque adjacente de circulation 3, la tenue mécanique du tube à réservoir de matériau à changement de phase 1 est augmentée. Par voie de conséquent un tel tube à réservoir de matériau à changement de phase 1 peut être utilisé dans un échangeur de chaleur du type d'un évaporateur qui est apte à recevoir un fluide réfrigérant dont la pression a une valeur nominale d' approximativement 15 bar. Dans ce mode de réalisation, le tube à réservoir de matériau à changement de phase 1 comporte une plaque réservoir 5 unique, sur une de ses faces externes en contact avec le second fluide caloporteur. L'autre de ses faces est en contact avec une plaque ondulée d'échange thermique avec le second fluide caloporteur, une telle plaque ondulée étant parfois qualifiée d'ailette ou d'intercalaire. An additional advantage of the phase change material reservoir tube ι is that the phase change material is directly in contact with the circulation plate 3, which facilitates and improves the heat energy exchange between the first heat transfer fluid and the phase change material. The circulation plates 3 may also comprise recesses 32 preferably made by stamping in a homogeneous distribution over the entire circulation plate 3. The circulation plates 3 comprise an external face intended to be oriented towards either a reservoir plate 5 , or a heat exchange element with the second heat transfer fluid, such as a corrugated plate. Each circulation plate 3 comprises an internal face opposite to the external face from which each recess 32 extends so that their summit part is in contact with the adjacent circulation plate 3. According to a preferred embodiment, but not limiting , the recesses 32 are staggered on the circulation plate 3. Due to such a distribution, the inner face of each recess 32 is in the flow path of the first fluid defined by the conduit 31, while the outer face can form a local reserve of phase change material, thereby increasing their heat exchange. Since the outer face of the circulation plate 3 is provided with recesses 32, the latter form complementary reserves of phase-change material so that for a given space, a tube with a reservoir 5 of phase-change material is provided. such recesses 32 allow increased storage of phase change material. This has the effect of increasing the time during which the phase change material exchanges heat energy with the second fluid. In addition, since the recesses 32 form additional connections with the adjacent circulation plate 3, the mechanical strength of the phase change material reservoir tube 1 is increased. Accordingly, such a phase change material reservoir tube 1 may be used in an evaporator type heat exchanger which is adapted to receive a refrigerant fluid having a nominal pressure of approximately 15 bar. . In this embodiment, the phase change material tank tube 1 comprises a single tank plate 5, on one of its external faces in contact with the second heat transfer fluid. The other of its faces is in contact with a corrugated heat exchange plate with the second heat transfer fluid, such corrugated plate being sometimes called fin or spacer.
Selon une variante de réalisation, le tube 1 peut néanmoins comporter une plaque réservoir à réservoir de matériau à changement de phase 1 sur chacune de ses faces externes en contact avec le second fluide caloporteur. Afin de faciliter le remplissage des cavités saillantes 51 dans ce mode de réalisation, le tube à réservoir de matériau à changement de phase 1 peut comporter un orifice de remplissage commun des cavités saillantes 51 des deux plaques réservoirs 5. Selon un mode de réalisation, les cavités saillantes 51 ont une forme en dôme. Ces dômes sont plus particulièrement disposés en quinconce afin que le second fluide caloporteur puisse circuler entre eux. According to an alternative embodiment, the tube 1 may nevertheless comprise a tank plate with a reservoir of phase change material 1 on each of its outer faces in contact with the second heat transfer fluid. In order to facilitate the filling of the projecting cavities 51 in this embodiment, the phase change material reservoir tube 1 may comprise a common filling orifice of the projecting cavities 51 of the two tank plates 5. According to one embodiment, the protruding cavities 51 have a domed shape. These domes are more particularly staggered so that the second heat transfer fluid can flow between them.
Selon un autre mode de réalisation, les cavités saillantes 51 ont une forme oblongue. Les cavités saillantes 51 sont alors réparties en « V » par rapport à l'axe longitudinal A de la plaque réservoir 5 comme le montre la figure 6. Cette forme et cette répartition particulière permettent au tube à réservoir de matériau à changement de phase 1 de contenir une quantité de matériau à changement de phase plus importante que pour la forme en dôme et permettent également de limiter les pertes de charge du second fluide caloporteur lors de son passage entre les cavités saillantes 51. According to another embodiment, the projecting cavities 51 have an oblong shape. The projecting cavities 51 are then distributed in "V" with respect to the longitudinal axis A of the tank plate 5 as shown in FIG. This particular shape and distribution allows the phase change material reservoir tube 1 to contain a larger quantity of phase change material than for the dome shape and also allows the pressure drops of the second heat transfer fluid to be limited during its passage between the projecting cavities 51.
Le tube d'échange 30 peut être un tube pourvu de micro canaux, un tel tube étant issu de la superposition de plaques planes et d'une plaque ondulée, cette dernière étant parfois qualifiée d'intercalaire interne, ladite plaque ondulée étant alors disposée entre les deux plaques planes adjacentes afin de former les micro-canaux. The exchange tube 30 may be a tube provided with micro channels, such a tube being derived from the superposition of flat plates and a corrugated plate, the latter being sometimes referred to as internal spacer, said corrugated plate being then disposed between the two adjacent flat plates to form the micro-channels.
Selon une variante de réalisation, le tube d'échange 30 peut plus particulièrement être composé de deux plaques de circulation 3, telles qu'elles ont été décrites précédemment, assemblées l'une à l'autre de façon étanche. According to an alternative embodiment, the exchange tube 30 may more particularly be composed of two circulation plates 3, as previously described, assembled to one another in a sealed manner.
Le faisceau d'échange de chaleur 100 comporte ici, réparti sur toute sa longueur, trois tubes à réservoir de matériau à changement de phase 1. Deux de ces tubes à réservoir de matériau à changement de phase 1 comportent une plaque réservoir 5 sur chacune de leurs faces externes en contact avec le second fluide caloporteur. Le troisième tube à réservoir de matériau à changement de phase 1 ne comporte quant à lui qu'une seule plaque réservoir 5 sur une de ses faces externes en contact avec le second fluide caloporteur. Le nombre total de tubes à réservoir de matériau à changement de phase 1 et de plaques réservoir 5 présents au sein d'un faisceau d'échange de chaleur 100 est fonction de sa taille et de sa longueur. Plus le faisceau d'échange de chaleur 100 est long, plus ce nombre est important afin d'assurer un refroidissement du second fluide caloporteur continue et ce même si le premier fluide caloporteur de circule plus dans ledit faisceau, par exemple lors d'un arrêt du compresseur. Ainsi, on voit bien que le tube à réservoir de matériau à changement de phase 1 du fait qu'il soit composé de deux plaques de circulation 3 et d'au moins une plaque réservoir 5, permet un montage simple et une fabrication peu coûteuse. De plus, le matériau à changement de phase est directement au contact de la plaque de circulation 3 ce qui facilité et améliore les échanges d'énergie calorifique entre le premier fluide caloporteur et le matériau à changement de phase. The heat exchange bundle 100 here comprises, distributed over its entire length, three tubes of phase change material tank 1. Two of these phase change material tank tubes 1 comprise a tank plate 5 on each of their external faces in contact with the second heat transfer fluid. The third tube containing material of phase change material 1 has only a single tank plate 5 on one of its outer faces in contact with the second heat transfer fluid. The total number of phase change material tank tubes 1 and reservoir plates 5 present within a heat exchange bundle 100 is a function of its size and length. The longer the heat exchange bundle 100, the greater this number is in order to ensure a cooling of the second heat transfer fluid continues and even if the first heat transfer fluid circulates more in said beam, for example during a shutdown of the compressor. Thus, it can clearly be seen that the tube containing phase change material 1 because it is composed of two circulation plates 3 and at least one tank plate 5, allows simple assembly and inexpensive manufacture. In addition, the phase-change material is directly in contact with the circulation plate 3 which facilitates and improves heat energy exchange between the first heat transfer fluid and the phase change material.
Selon l'invention, on choisit un matériau à changement de phase pour lequel la température de fusion est abaissée de sorte à permettre le contournement de l'évaporateur par une partie du flux d'air. Ce contournement permet de réduire la consommation de la boucle de climatisation dans son ensemble.  According to the invention, a phase change material is chosen for which the melting temperature is lowered so as to allow the evaporation of the evaporator by a part of the air flow. This bypass reduces the consumption of the air conditioning loop as a whole.
Dans le mode de fonctionnement choisi dans ce mode de réalisation, la température du flux d'air en sortie de l'évaporateur doit être comprise entre 4 degrés Celsius et 12 degrés Celsius. Or, la température de saturation du fluide caloporteur utilisé de manière classique est située à environ o degré Celsius.  In the mode of operation chosen in this embodiment, the temperature of the air flow leaving the evaporator must be between 4 degrees Celsius and 12 degrees Celsius. However, the saturation temperature of the coolant conventionally used is at about o degrees Celsius.
De ce fait, il faut définir la température de solidification du matériau à changement de phase suffisamment haute pour qu'il soit compatible avec la température du fluide caloporteur lorsque l'ensemble de climatisation fonctionne, et suffisamment basse pour que le matériau à changement de phase soit liquéfié avant que la température du flux d'air n'atteigne 12 degrés Celsius. Therefore, it is necessary to define the solidification temperature of the phase change material sufficiently high to be compatible with the temperature of the heat transfer fluid when the air conditioning assembly is operating, and low enough for the phase change material to be be liquefied before the airflow temperature reaches 12 degrees Celsius.
Ainsi, et comme plus particulièrement illustré sur le graphique de la figure 3 avec la courbe A de fusion du matériau à changement de phase et la courbe B de solidification du matériau à changement de phase, le matériau à changement de phase peut être choisi selon une pluralité de facteurs. Thus, and as more particularly illustrated in the graph of FIG. 3 with the melting curve A of the phase change material and the solidification curve B of the phase change material, the phase change material can be selected in accordance with FIG. plurality of factors.
Selon l'invention, le matériau à changement de phase présente donc une température de solidification comprise entre 6 et 8 degrés Celsius. On peut également mettre en œuvre, selon un mode de réalisation particulier, un matériau à changement de phase qui présente une température de fusion comprise entre 7 et 9 degrés Celsius. Dans un mode de réalisation particulier de l'invention, qui correspond au mode de réalisation détaillé ici, le matériau à changement de phase présente une chaleur latente de fusion comprise entre 130 kJ/kg.K et 250 kJ/kg.K. According to the invention, the phase-change material therefore has a solidification temperature of between 6 and 8 degrees Celsius. It is also possible to implement, according to a particular embodiment, a phase-change material which has a melting point of between 7 and 9 degrees Celsius. In a particular embodiment of the invention, which corresponds to the embodiment detailed here, the phase change material has a latent heat of fusion of between 130 kJ / kg.K and 250 kJ / kg.K.
Pour le choix du matériau à changement de phase, on pourra par exemple choisir une paraffine. For the choice of the phase-change material, it will be possible for example to choose a paraffin.
On pourra également choisir un matériau à changement de phase parmi les acides gras. Ce matériau à changement de phase peut par exemple être composé d'un ester, tel que le tetradecanoic acid-méthylethyl ester. Dans une variante, il pourra être composé à 99% de tetradecanoic acid-méthylethyl ester, auquel on ajoute un ou plusieurs additifs. II est à noter que la solidification du matériau à changement de phase peut préférentiellement avoir lieu lors d'une phase de freinage du véhicule, ceci étant rendu possible par une augmentation de la cylindrée d'un compresseur, puisque la consommation d'un compresseur est nulle lors d'une phase de freinage et qu'une phase de freinage précède souvent une phase d'arrêt du véhicule. It will also be possible to choose a phase change material among the fatty acids. This phase-change material may for example be composed of an ester, such as tetradecanoic acid-methylethyl ester. In a variant, it may be composed of 99% of tetradecanoic acid-methylethyl ester, to which one or more additives are added. It should be noted that the solidification of the phase-change material can preferably take place during a braking phase of the vehicle, this being made possible by an increase in the displacement of a compressor, since the consumption of a compressor is zero during a braking phase and a braking phase often precedes a stopping phase of the vehicle.
Cet ensemble de climatisation pour véhicule automobile, traversé par un flux d'air, peut comprendre, en plus de l'évaporateur, un compresseur ainsi qu'un circuit de volets mis en œuvre au sein d'un dispositif complet de climatisation. La présence du compresseur permet que le flux d'air contourne au moins partiellement l'évaporateur. Il est à noter que le flux d'air est, en sortie de l'évaporateur, à une température comprise entre 1 et 12 degrés Celsius. This air conditioning assembly for a motor vehicle, traversed by a flow of air, may comprise, in addition to the evaporator, a compressor and a shutter circuit implemented within a complete air conditioning device. The presence of the compressor allows the airflow to at least partially bypass the evaporator. It should be noted that the air flow is, at the outlet of the evaporator, at a temperature between 1 and 12 degrees Celsius.

Claims

REVENDICATIONS l. Tube (i) pour faisceau d'échange de chaleur (100) d'un échangeur de chaleur de véhicule, ledit tube (î) comportant : CLAIMS l. Tube (i) for heat exchange bundle (100) of a vehicle heat exchanger, said tube (1) comprising:
- deux plaques de circulation (3) configurées pour être assemblées l'une à l'autre de façon étanche et former au moins un conduit (31) dans lequel circule un premier fluide caloporteur entre lesdites plaques de circulation (3),  two circulation plates (3) configured to be tightly assembled to one another and to form at least one duct (31) in which a first heat transfer fluid circulates between said circulation plates (3),
- au moins une plaque réservoir (5) comportant des cavités (51), ladite plaque réservoir (5) étant configurée pour venir s'assembler de façon étanche sur une face d'une des deux plaques de circulation (3) de sorte à refermer les cavités (51), lesdites cavités (51) étant saillantes sur la face de la plaque réservoir (5) de sorte qu'un second fluide caloporteur puisse circuler entre lesdites cavités (51),  - at least one tank plate (5) having cavities (51), said tank plate (5) being configured to come together sealingly on one side of one of the two circulation plates (3) so as to close again the cavities (51), said cavities (51) being projecting on the face of the tank plate (5) so that a second heat transfer fluid can circulate between said cavities (51),
ledit tube (1) comportant en outre un matériau à changement de phase stocké dans des logements formés par lesdites cavités (51), ledit matériau à changement de phase présentant une température de solidification comprise entre 6 et 8 degrés Celsius. said tube (1) further comprising a phase change material stored in housings formed by said cavities (51), said phase change material having a solidification temperature of between 6 and 8 degrees Celsius.
2. Tube selon la revendication précédente, le matériau à changement de phase présentant une température de début de solidification comprise entre 7,5 et 8 degrés Celsius. 2. Tube according to the preceding claim, the phase change material having a solidification start temperature of between 7.5 and 8 degrees Celsius.
3. Tube selon l'une des revendications précédentes, le matériau à changement de phase présentant une température de fusion comprise entre 7 et 9 degrés Celsius. 3. Tube according to one of the preceding claims, the phase change material having a melting temperature of between 7 and 9 degrees Celsius.
4. Tube selon l'une des revendications précédentes, le matériau à changement de phase présentant une chaleur latente de fusion comprise entre 130 kJ/kg.K et 250 kJ/kg.K 4. Tube according to one of the preceding claims, the phase change material having a latent heat of fusion of between 130 kJ / kg.K and 250 kJ / kg.K
5. Tube selon l'une des revendications précédentes, le matériau à changement de phase étant une paraffine. 5. Tube according to one of the preceding claims, the phase change material being a paraffin.
6. Tube selon l'une des revendications 1 à 4, le matériau à changement de phase étant un acide gras. 6. Tube according to one of claims 1 to 4, the phase change material being a fatty acid.
7. Evaporateur (100) pour circuit de climatisation de véhicule automobile, l'évaporateur (100) comprenant une pluralité de tubes (1) selon l'une des revendications précédentes. 7. Evaporator (100) for a motor vehicle air conditioning circuit, the evaporator (100) comprising a plurality of tubes (1) according to one of the preceding claims.
8. Ensemble de climatisation pour véhicule automobile, ledit ensemble étant traversé par un flux d'air, l'ensemble comprenant au moins un évaporateur (100) selon la revendication 7, le flux d'air contournant au moins partiellement l'évaporateur (100). 8. air conditioning assembly for a motor vehicle, said assembly being traversed by an air flow, the assembly comprising at least one evaporator (100) according to claim 7, the air flow bypassing at least partially the evaporator (100); ).
9. Ensemble de climatisation selon la revendication précédente, le flux d'air sortant de l'évaporateur (100) étant à une température comprise entre 1 et 12 degrés Celsius. 9. The air conditioning assembly according to the preceding claim, the air flow leaving the evaporator (100) being at a temperature between 1 and 12 degrees Celsius.
PCT/FR2017/052606 2016-09-28 2017-09-27 Tube with reservoir of phase change material for an evaporator, associated evaporator and air conditioning assembly WO2018060601A1 (en)

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CN201780067381.7A CN109923364A (en) 2016-09-28 2017-09-27 The pipe with phase-change material reservoir, relevant evaporator and air-conditioning assembly for evaporator
EP17787475.7A EP3519750A1 (en) 2016-09-28 2017-09-27 Tube with reservoir of phase change material for an evaporator, associated evaporator and air conditioning assembly
US16/337,252 US20200132379A1 (en) 2016-09-28 2017-09-27 Tube with reservoir of phase change material for an evaporator, associated evaporator and air conditioning assembly

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FR1659225 2016-09-28
FR1659225A FR3056725B1 (en) 2016-09-28 2016-09-28 PHASE CHANGE MATERIAL TANK TUBE FOR EVAPORATOR, EVAPORATOR AND AIR CONDITIONING ASSEMBLY THEREFOR.

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Citations (3)

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US20120204597A1 (en) * 2009-05-19 2012-08-16 Valeo Systems Thermiques Heat Exchange Device Containing Heat Storage Material
FR3014183A1 (en) * 2013-11-29 2015-06-05 Valeo Systemes Thermiques THERMAL EXCHANGER, IN PARTICULAR FOR A MOTOR VEHICLE, METHOD OF MANUFACTURING THE SAME, AND USE OF A MATERIAL WITH A PHASE CHANGE ASSOCIATED WITH IT
FR3025596A1 (en) * 2014-09-08 2016-03-11 Valeo Systemes Thermiques PHASE CHANGE MATERIAL TANK TUBE FOR HEAT EXCHANGER

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FR2861166B1 (en) * 2003-10-21 2006-11-24 Valeo Climatisation HEAT EXCHANGER USING ACCUMULATION FLUID
US6964178B2 (en) * 2004-02-27 2005-11-15 Denso Corporation Air conditioning system for vehicle
US20120042687A1 (en) * 2010-08-23 2012-02-23 Showa Denko K.K. Evaporator with cool storage function
JP5868088B2 (en) * 2011-09-15 2016-02-24 株式会社ケーヒン・サーマル・テクノロジー Cooling unit for vehicle air conditioner

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Publication number Priority date Publication date Assignee Title
US20120204597A1 (en) * 2009-05-19 2012-08-16 Valeo Systems Thermiques Heat Exchange Device Containing Heat Storage Material
FR3014183A1 (en) * 2013-11-29 2015-06-05 Valeo Systemes Thermiques THERMAL EXCHANGER, IN PARTICULAR FOR A MOTOR VEHICLE, METHOD OF MANUFACTURING THE SAME, AND USE OF A MATERIAL WITH A PHASE CHANGE ASSOCIATED WITH IT
FR3025596A1 (en) * 2014-09-08 2016-03-11 Valeo Systemes Thermiques PHASE CHANGE MATERIAL TANK TUBE FOR HEAT EXCHANGER

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FR3056725B1 (en) 2018-11-30
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US20200132379A1 (en) 2020-04-30
CN109923364A (en) 2019-06-21

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