EP4019882A1 - Adiabatischer kühler oder kondensator mit einem organ zur erzeugung eines variablen druckverlustes - Google Patents

Adiabatischer kühler oder kondensator mit einem organ zur erzeugung eines variablen druckverlustes Download PDF

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Publication number
EP4019882A1
EP4019882A1 EP21208966.8A EP21208966A EP4019882A1 EP 4019882 A1 EP4019882 A1 EP 4019882A1 EP 21208966 A EP21208966 A EP 21208966A EP 4019882 A1 EP4019882 A1 EP 4019882A1
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EP
European Patent Office
Prior art keywords
thickness
condenser
height
pressure drop
humidification
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21208966.8A
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English (en)
French (fr)
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EP4019882B1 (de
Inventor
Philippe Duhamel
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Jacir SAS
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Jacir SAS
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • 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
    • 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
    • F28D5/02—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, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
    • 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
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels

Definitions

  • the present invention relates to the field of the generation of cold, more particularly, the cooling circuits of a fluid, for example water, and the refrigeration circuits.
  • the present invention relates in particular to coolers and air-cooled condensers.
  • a fluid cooling circuit can include one or more air/liquid exchangers.
  • a refrigeration circuit generally comprises successively a compressor, a condenser, an expansion valve and an evaporator.
  • the cooling circuits and the refrigerating circuits make it possible to efficiently and economically evacuate to an external environment heat generated by a device, for example an air conditioning installation, a cold room, or industrial processes.
  • the present invention finds a preferred application for so-called “adiabatic” water-dispersion or media-based air coolers and condensers.
  • the chiller differs from the air condenser only in that the heat evacuated is not used to condense a gas into liquid but simply to cool a fluid.
  • the condensation of the refrigerant is carried out by ventilation of an air flow A set in motion by one or more fans 2 on a heat exchange battery 3 containing the refrigerant and configured to pass the refrigerant from a gaseous form F E to a liquid form Fs.
  • the movement of the airflow A is represented by arrows. Airflow A only passes through a heat exchange coil.
  • the adiabatic air condenser 1 comprises an air humidification device 4 arranged upstream of the heat exchange battery 3 in the direction of circulation of the air flow A.
  • the device 4 for humidifying the air comprises a medium 4a, a system 4b for spraying the medium 4a with a fluid, for example water, arranged above the said medium 4a and configured to humidify the said medium 4a and a system 4c for recovering or collecting humidification fluid after having passed through the medium 4a.
  • the condensation battery comprises either a plurality of tubes and fins, or micro-channels.
  • a refrigerant circulates in the tubes of the condensing coil.
  • the tubes thereof are connected to a refrigerant inlet manifold and to a refrigerant outlet manifold.
  • the tubes of the condensing coil are interconnected, depending on the number of passes, by 180° bends.
  • the air humidification device comprises a system 5 for spraying a fluid through spray nozzles.
  • the spray system 5 is mounted upstream of the heat exchange battery 3 in the direction of circulation of the air flow A.
  • the standards in force relating to vesicular entrainment require the elimination of such vesicular entrainment, in order to avoid a health risk, such as for example the propagation of viruses or bacteria, such as Legionnaires' disease.
  • the present invention therefore aims to overcome the above drawbacks and to improve the so-called "adiabatic" water spray or media coolers/condensers in order to increase the heat exchange between the air and the battery. heat exchanger and reduce pressure drops and thus the power absorbed by the fans.
  • the subject of the invention is an adiabatic cooler or condenser comprising at least one heat exchanger or heat exchanger in which a fluid is intended to circulate, for example a fluid to be cooled or to be condensed, such as for example a refrigerant, water, glycol, a mixture of water and glycol or any other fluid suitable for condensing or cooling.
  • a fluid is intended to circulate, for example a fluid to be cooled or to be condensed, such as for example a refrigerant, water, glycol, a mixture of water and glycol or any other fluid suitable for condensing or cooling.
  • the heat exchanger is intended to be crossed by an air flow, at least one member intended to set said air flow in motion and at least one air humidification device mounted upstream of the exchanger of heat in the direction of the air flow and configured to humidify the air flow entering the heat exchanger
  • the adiabatic cooler or condenser comprises at least one member for generating a pressure drop arranged upstream and/or downstream of the heat exchanger in the direction of circulation of the air flow.
  • the member for generating a pressure drop comprises a variable pressure drop coefficient in the direction of the height of the heat exchanger, said pressure drop coefficient increases in the direction of the moving member of the air flow.
  • the device for generating a pressure drop can be a media humidification device or any other device configured to create a pressure drop locally, such as, for example, shutters, fins or louvers, slatted blinds, a perforated sheet, etc...
  • the heat exchange is increased by the balancing of the air flow at the inlet of the heat exchanger, which implies better humidification of the air passing through said heat exchanger.
  • the pressure drop coefficient of the member for generating a pressure drop is maximum in an upper end zone, close to an upper end wall of the heat exchanger, for example at close to the member for moving the air flow and minimum in a lower end zone, close to a lower end wall of the heat exchanger, for example at a distance from the Put into motion.
  • the pressure drop coefficient of the pressure drop generating member increases along the height of the heat exchanger up to the upper end wall of said heat exchanger.
  • the member for generating a pressure drop comprises a variable thickness in the direction of the height of the heat exchanger, said thickness increasing in the direction of the member for setting the flow in motion. 'air.
  • the thickness of the member for generating a pressure drop is maximum in an upper end zone, for example close to the member for setting the air flow in motion, and minimum in a zone at the upper end. lower end, remote from the moving member.
  • the thickness of the pressure drop generation member increases along the height of the heat exchanger up to the upper end wall of said heat exchanger.
  • the thickness of the member for generating a pressure drop increases progressively along the height of the heat exchanger or discontinuously along the height of the heat exchanger.
  • the air humidification device comprises at least one system for spraying an air humidification fluid.
  • the air humidification device further comprises a humidification member or medium disposed upstream of the heat exchanger in the direction of circulation of the air flow and the spray system comprises a system for sprinkling said medium with a humidification fluid, said sprinkling system being arranged above the humidification member and configured to humidify said humidification member.
  • the air humidification device is devoid of media and the spray system further comprises a spray system comprising at least one spray nozzle configured to spray the humidification fluid directly onto the 'heat exchanger.
  • the spraying system is a system for spraying a medium with a humidifying fluid or a spraying system with a humidifying fluid, for example water.
  • the device for humidifying the air of one of the groups comprises a medium and a system for sprinkling said medium with a humidifying fluid arranged above the medium and configured to humidify said corresponding medium and the air humidification device of the other of the groups only comprises a system for spraying with a humidification fluid, without media.
  • the media is, for example, made of absorbent material.
  • the member for generating a pressure drop can be part of the humidification member.
  • the humidification member has a variable thickness in the direction of its height, said thickness increasing in the direction of the upper end wall.
  • the pressure drop is modulated according to the height of the heat exchanger, making it possible to homogenize the cooling according to the height of the heat exchanger.
  • the thickness of the humidification member is minimal in a lower end zone, close to the lower and maximum end wall in an upper end zone, for example close to the upper end wall.
  • the thickness of the humification member increases along its height up to the upper end wall.
  • upper end zone is meant a zone of the humidification member extending between the upper end wall and the middle of said humidification member.
  • the maximum thickness of the humidification member is less than or equal to twice the minimum thickness of the humidification member.
  • the thickness of the humidifying member increases from the lower end wall of said humidifying member towards its upper wall.
  • the thickness of the humidification member increases in the direction of the member for moving the air flow.
  • the humidification member comprises an internal and/or external extra thickness extending only over part of the height of said humidification member.
  • excess thickness is meant an additional thickness with respect to the internal or external wall of the humidification member.
  • the additional thickness forms the head loss generation member.
  • the humidification member is media-based and comprises a main portion of media comprising a lower end wall having a thickness and at least one additional thickness arranged upstream and/or downstream of the main portion of media and having a variable thickness in the direction of the height of said main portion of media, the thickness of the humidification member corresponding to the sum of the thickness of the main portion of media and the thickness of the head loss generating unit.
  • the additional thickness forming the pressure drop generation member extends over the entire depth of the main media portion. “Depth” means the horizontal dimension measured between the front wall and the rear wall of the main media portion. As a variant, the additional thickness forming the pressure drop generating member extends over part of the depth of the main portion of media.
  • the extra thickness forming the pressure drop generation member and the main media portion can, for example, be made in one piece, that is to say formed from a single media, then cut directly from the mass of the media.
  • the pad extends only part of the height of the main portion of media.
  • the thickness of the humidification member advantageously increases progressively along its height.
  • the extra thickness has a discontinuous shape along the height of the humidification member.
  • the additional thickness forming the pressure drop generation member comprises at least two secondary portions fixed successively to a side wall of the main media portion, the two secondary portions each having a constant thickness, the height of the first secondary portion being different from the height of the second secondary potion.
  • the additional thickness forming the pressure drop generation member comprises a single secondary portion having an increasing thickness as a function of the height of the main media portion.
  • the secondary portion has a bevel shape having a minimum thickness, for example zero, at the lower end wall of the main portion of the medium and a maximum thickness at the upper end wall of said main portion.
  • the maximum thickness of the secondary portion is, for example, less than the constant thickness of the main media portion, for example greater than or equal to one third of the thickness of the main media portion.
  • the adiabatic cooler or condenser comprises a first additional thickness or internal additional thickness located downstream of the main portion of the medium in the direction of flow of the air flow and a second additional thickness or external additional thickness located upstream of the main portion of the media in the direction of air flow.
  • the first additional thickness comprises a first secondary portion, for example in the shape of a bevel, having an increasing thickness as a function of the height of the main media portion and in which the second additional thickness comprises a second secondary portion having an increasing thickness as a function of the height of the main portion of media.
  • the first extra thickness to have a constant thickness over the entire height of said extra thickness, the extra thickness extending only over part of the height of the main portion of media and for the second extra thickness to have an increasing thickness in depending on the height of the main portion of media.
  • the main media portion and the extra thickness forming the pressure drop generation member are separate and fixed to each other.
  • the extra thickness forming the pressure drop generation member is made of a material that is identical to or different from the material of the main media portion.
  • the heat exchanger extends in a substantially vertical direction.
  • the heat exchanger extends in a direction inclined relative to a vertical direction, for example at 45°.
  • the adiabatic cooler or air condenser comprises two heat exchangers each traversed by a flow of air.
  • the terms “internal” and “external” refer to the interior of the adiabatic cooler or condenser, the internal parts are closer to the interior of the cooler or condenser than the external parts.
  • the adiabatic cooler/condenser 10 can be of the air condenser type in which a fluid to be condensed circulates or cooler in which a fluid to be cooled circulates.
  • the adiabatic cooler or condenser 10 comprises a casing 12 comprising four side walls (not referenced) here vertical, namely two side walls, a transverse front wall and a transverse rear wall.
  • the casing 12 further comprises an upper wall and a floor or lower wall forming a bottom. All of the walls of the casing 12 delimit an internal enclosure 13.
  • the cooler or condenser 10 comprises one or more members 16 for moving the air flow or fans mounted on the upper wall of the casing 12 and configured to set the air flow A in motion.
  • the cooler or condenser 10 further comprises two heat exchangers or heat exchange coils 20, 30 each traversed by a separate air flow A1, A2. In other words, an air flow passes through only one heat exchanger 20, 30.
  • the height of the batteries 20, 30 is referenced HB.
  • Each battery 20, 30 is delimited by an upper wall Es_B and a lower wall Ei_B.
  • the cooler or condenser 10 could comprise only one heat exchange battery through which an air flow passes.
  • the cooler or condenser comprises an air humidification device 23; 33 mounted upstream of the heat exchange battery 20; 30 associated.
  • the cooler or condenser 10 comprises the air humidification device 23; 33 and the heat exchange battery 20; 30.
  • the cooler or condenser could comprise a number of heat exchange batteries and associated humidification devices greater than one, for example equal to two.
  • the number of heat exchange coils is the same as the number of humidifiers.
  • the heat exchange batteries 20, 30 each comprise either a plurality of tubes and fins (not shown), or micro channels.
  • a fluid for example a fluid to be cooled or condensed, such as for example a refrigerant fluid, water, glycol, a mixture of water and glycol or any other fluid suitable for being condensed or cooled circulates in the tubes of each of the heat exchange batteries.
  • the heat exchange coils are configured to change the refrigerant from a gaseous form to a liquid form.
  • the gaseous fluid at the inlet F G is condensed to deliver a liquid fluid at the outlet Fs.
  • the heat exchange coils are configured to cool the circulating fluid in said batteries.
  • the fluid at the outlet Fs is cooled with respect to the fluid at the inlet F E .
  • Each of the air humidification devices 23; 33 is configured to humidify the air flow entering the batteries 20; 30.
  • Each of the air humidification devices 23; 33 is associated with a battery.
  • Each air humidification device 23, 33 is arranged upstream of a battery 20; 30 in the direction of circulation of the air flow set in motion by the fans 16.
  • the air humidification device 23; 33 comprises a system 23a, 33a for spraying a fluid upstream of the associated battery.
  • the air humidification device 23; 33 comprises a humidification member 24; 34 or media arranged upstream of a battery 20; 30 in the direction of circulation of the air flow set in motion by the fan 16.
  • the medium is generally made of absorbent material.
  • the sprinkler system 23a; 33a of a fluid is here in the form of a media sprinkler system 24; 34 by a wetting fluid, for example water.
  • the sprinkler system 23a; 33a is, here, arranged above each of the media 24, 34 and configured to moisten said associated media.
  • the air humidification devices 23; 33 are devoid of media.
  • the spray system is in the form of a system for spraying a humidifying fluid arranged upstream of a battery, as will be described in detail with reference to the figure 3 , 5 , 7 , 9 and 11 .
  • each of the air humidification devices 23; 33 comprises at least one system for spraying a fluid, such as a system for sprinkling a medium with a humidifying fluid or a system for spraying a humidifying fluid.
  • the air humidification device 23; 33 includes a system 23b; 33b for recovering or collecting the humidification fluid after having passed through the humidification member 24; 34 matching.
  • the system 23b; 33b recovery collects the humification fluid after spraying by the spray system.
  • the side walls of the cooler or condenser are separate from the heat exchange batteries 20, 30.
  • the air humidification device 23, 33 is arranged outside of envelope 12.
  • the adiabatic cooler or condenser 10 comprises two members S for generating a pressure drop, each arranged upstream of the heat battery 20, 30 in the direction of circulation of the air flow.
  • Each unit S for generating a pressure drop comprises a variable pressure drop coefficient in the direction of the height HB of the heat exchange battery 20, 30. Said pressure drop coefficient increases in the direction of the fans 16.
  • the member S for generating a pressure drop comprises a thickness that varies discontinuously in the direction of the height HB of the heat exchange battery 20, 30, said thickness increasing in the direction of the fans 16.
  • the variation in the thickness of the member S for generating a pressure drop according to the height of the battery generates a pressure drop which increases along said height, here in the direction of the body for moving the flow d 'air.
  • the member S for generating a pressure drop is part of the humidification member 24, 34.
  • the humidification member 24, 34 has a variable thickness L in the direction of its height H1.
  • the height H1 of the humidification member is delimited between a lower end wall Ei_M and an upper end wall Es_M.
  • the height H1 corresponds to the height HB of the heat exchanger 20, 30.
  • the thickness L of the humidification member 24, 34 increases discontinuously from the lower end wall Ei_M in the direction of the fan 16 to its upper end wall Es_M.
  • the thickness L of the humidification member 24, 34 is here minimum at the lower end wall Ei_M and maximum at the upper end wall. Provision could be made for the minimum and/or maximum thicknesses to be offset from the lower and upper end walls Ei_M, Es_M. In general, the thickness L of the humidification member is minimum in a lower end zone, close to the lower end wall Ei_M and maximum in an upper end zone, close to the wall of upper end Es_M.
  • the humidification members 24, 34 of the cooler or condenser 10 each comprise a main media portion 24a, 34a and two secondary portions 24b, 24c; 34b, 34c fixed successively on the inner side wall of the main portion 24a; 34a so as to form a localized internal extra thickness of the humidification member 24, 34 forming the member S for generating pressure drop.
  • the two secondary portions 24b, 24c; 34b, 34c could be fixed successively on the outer side wall of the main portion 24a; 34a. Provision could also be made for secondary portions arranged upstream and downstream of the humidification member.
  • the two secondary portions 24b, 24c; 34b, 34c form the pressure drop creation member S configured to create a pressure drop locally in the direction of the air flow.
  • the pressure drop coefficient is greater upstream of the internal secondary portion 24c than the pressure drop coefficient upstream of the external secondary portion 24b.
  • the humidification member here comprises an extra thickness on the inside of said member and extending only over part of the height H1 of said humidifier member.
  • the main portion 24a, 34a is generally made of absorbent material.
  • the secondary portions 24b, 24c; 34b, 34c extend over the entire depth of the main portion 24a; 34a of media, that is to say between the front wall and the rear wall (not referenced) of the main portion of media.
  • secondary portions 24b, 24c; 34b, 34c are located downstream of the main portion 24a; 34a, in the direction of flow of the air flow.
  • the secondary portions 24b, 24c; 34b, 34c are located upstream of the main portion 24a; 34a, in the direction of flow of the air flow. Provision could also be made for secondary portions located upstream and downstream of the main portion 24a; 34a. Provision could also be made for the pressure drop generation unit S not to be located between the battery 20; 30 and the main portion 24a; 34a of the humidification unit 24, 34, but upstream of the battery 20, 30.
  • the main portion 24a; 34a has a constant thickness L1 and a height H1 delimited between a lower end wall Ei_M and an upper end wall Es_M.
  • the first secondary portion 24b; 34b has a constant thickness L2 and a height H2 and is located at a distance D2 from the lower end wall Ei_M of main portion 24a; 34a.
  • the second secondary portion 24c; 34c has a constant thickness L3 and a height H3 and is located at a distance D3 from the lower end wall Ei_M of the main portion 24a; 34a.
  • the upper end wall Es_M of the main portion 24a; 34a is aligned with the upper walls (not referenced) of the secondary portions 24b, 24c; 34b, 34c.
  • the secondary portions are two in number.
  • a different number of secondary portions could be provided, for example equal to one or more than three.
  • the sum of the thicknesses L2+L3 of the secondary portions is less than the thickness L1 of the main portion 24a; 34a, for example less than or equal to half the thickness L1 of the main portion 24a; 34a.
  • the height H1 of the main portion 24a; 34a here corresponds to the height HB of the heat exchange battery 20; 30.
  • the main portion 24a; 34a has a thickness L1 of between 75mm and 200mm, for example equal to 50mm, and a sum of the thicknesses L1, L2 and L3 of between 150mm and 300mm, for example equal to 250mm.
  • the extra thickness formed by the secondary portions and corresponding to the sum of the secondary thicknesses L2 and L3 is between 30mm and 150mm, for example 100mm.
  • the sum of the secondary thicknesses L2 and L3 corresponds to the thickness of the member S for generating pressure drop.
  • the distance D2 is for example between 90% and 25% of the height HB and the distance D3 is for example between 50% and 5% of the height HB.
  • the main portion 24a; 34a and the secondary portions 24b, 24c; 34b, 34c can be formed from a single media and then cut directly from the mass of media.
  • main portion 24a; 34a and the secondary portions 24b, 24c; 34b, 34c can be separate and fixed together, for example by gluing or other fixing means.
  • the secondary portions 24b, 24c; 34b, 34c are distinct from the main portions 24a; 34a
  • said secondary portions could be made of the same material as the main portion or of another material.
  • the extra thickness S forms a projecting portion of the internal wall of the main media portion 24a, 34a.
  • the secondary portions 24b, 24c; 34b, 34c are not made of absorbent material, but in the form of members configured to create a pressure drop locally, such as, for example, shutters, fins or louvres, slatted blinds, etc. In this case, the member creating a pressure drop is separate from the humidification member.
  • the member S for creating a pressure drop has a variable pressure drop coefficient depending on the height of the heat exchanger, said pressure drop coefficient increasing in the direction of the moving airflow.
  • the embodiment illustrated in the picture 3 differs from the embodiment illustrated in the picture 2 only by the fact that the humidification device has no humidification member, the humidification of the air is carried out by spraying a spray fluid directly onto the external face of the associated battery 20, 30.
  • the cooler/aerocondenser could comprise only a single heat exchange battery.
  • the air humidification device comprises a spray system, here in the form of a spray system 40a, 40b comprising a plurality of spray nozzles configured to spray a humidifying fluid, for example water, directly on the external face of the associated battery 20, 30.
  • a spray system here in the form of a spray system 40a, 40b comprising a plurality of spray nozzles configured to spray a humidifying fluid, for example water, directly on the external face of the associated battery 20, 30.
  • the air humidification device further comprises a system 23b, 33b for recovering or collecting the humidification fluid sprayed by the associated spray system 40a, 40b.
  • the air humidification device is, here, devoid of media.
  • the pressure drop generation unit S is here arranged between the spray nozzles of a spraying system 40a, 40b and the associated battery 20, 30.
  • the pressure drop generation unit S could be arranged downstream of the associated battery 20, 30 in the direction of circulation of the air flow.
  • the variation in the thickness of the member S for generating a pressure drop along the height of the battery generates a pressure drop which increases along said height, here in the direction of the flow-moving member of air 16.
  • the thickness L4 of the pressure drop generation member S increases progressively along the height HB of the battery 20; 30 from the lower end wall Ei_B towards the fan 16 to the upper end wall Es_B.
  • the pressure drop generation member S comprises a single secondary portion 24d; 34d in the shape of a bevel or triangle from the lower end wall Ei_B to the upper end wall Es_B of the battery 20, 30.
  • the secondary portion 24d; 34d has an increasing thickness L4 along the height HB of the battery 20; 30.
  • the thickness L4 is zero at the lower end wall Ei_B of the battery 20; 30 and maximum at the upper end wall Es_B of said battery 20; 30.
  • the variation in the thickness of the secondary portion 24d; 34d of the member S for generating a pressure drop along the height of the battery generates a pressure drop which increases along said height, here in the direction of the member for moving the air flow 16.
  • the pressure drop generation unit S can be part of the humidification unit or media 24, 34 or be separate from said humidification unit 24; 34 and fixed to the humidification member 24; 34, for example by gluing or other fixing means.
  • the main portion 24a; 34a and the secondary portion 24d; 34d can be formed from a single media and then cut directly from the mass of media.
  • the thickness L of the humidification member 24, 34 gradually increases from the lower end wall Ei_M in the direction of the fan 16 to its upper end wall Es_M.
  • the humidification member 24; 34 here comprises an internal extra thickness S, forming the pressure drop generation member, extending only over part of the height H1 of said humidification member 24; 34.
  • the constant thickness L1 of the main portion 24a; 34a of the humidification member 24; 34 corresponds to the minimum thickness of said humidification member 24, 34.
  • the maximum thickness of the humidification member 24, 34 corresponds to the sum of said minimum thickness L1 and the thickness L4 of the extra thickness S.
  • the maximum thickness L4 of the secondary portion 24d is less than the constant thickness L1 of the main portion 24a; 34a, for example greater than or equal to one third of the thickness L1 of the main portion 24a; 34a.
  • the height H1 of the main portion 24a; 34a here corresponds to the height HB of the heat exchange battery 20; 30.
  • additional thickness is meant an additional thickness L4 with respect to the thickness L1 of the main portion of media.
  • the secondary portion 24d; 34d extends the full depth of the main media portion 24a; 34a.
  • the secondary portion 24d; 34d is distinct from the main portion 24a; 34a
  • said secondary portion could be made of the same material as the main portion or of another material.
  • the extra thickness S forms a projecting portion of the internal wall of the main media portion.
  • the extra thickness S could start at a distance from the lower wall Ei_B, for example at a distance, for example comprised between 90% and 25% of the height HB.
  • the variation in the thickness of the extra thickness according to the height of the battery generates a pressure drop which increases according to said height, here in the direction of the member for moving the air flow 16.
  • thickness of the extra thickness the greater the pressure drop.
  • the device for humidifying the air of the cooler or condenser could have no humidification device and could comprise the spray system 40a, 40b associated with a heat exchange battery 20, 30, such as described with reference to the embodiment of the picture 3 .
  • the spray system 40a, 40b associated with a heat exchange battery 20, 30, such as described with reference to the embodiment of the picture 3 .
  • Such an embodiment is illustrated in the figure 5 .
  • the embodiment illustrated in the figure 6 differs from the embodiment illustrated in the figure 4 only by the fact the head loss generation member comprises two portions S1, S2 arranged on either side of the humidification member 24; 34, in particular its main portion of the media 24a; 34a.
  • the pressure drop generation member comprises a first portion or internal extra thickness S1 located downstream of the main portion of the medium 24a; 34a of the humidification member 24; 34 in the direction of the air flow.
  • Said first internal portion S1 is identical to the extra thickness S illustrated on the figure 4 .
  • the first additional thickness S1 is formed by a first secondary portion 24d; 34d in the shape of a bevel or triangle from the lower end wall Ei_M to the upper end wall Es_M of the main portion 24a; 34a of media 24; 34.
  • the first secondary portion 24d; 34d has an increasing thickness L4 as a function of the height H1 of the main portion 24a; 34a.
  • the thickness L4 is zero at the lower end wall Ei_M of the main portion 24a; 34a of media 24; 34 and maximum at the upper end wall Es_M of said main portion.
  • the maximum thickness L4 of the first secondary portion is less than the constant thickness L1 of the main portion 24a; 34a, for example greater than or equal to a third of the thickness L1 of the main portion 24a; 34a.
  • the height H1 of the main portion 24a; 34a here corresponds to the height HB of the heat exchange battery 20; 30.
  • the head loss generating member further comprises a second portion or external extra thickness S2 located upstream of the main portion of the medium 24a; 34a in the flow direction of the air flow is formed by a second secondary portion 24e; 34th in the shape of a bevel or triangle from the lower wall Ei_M to the upper wall Es_M of the main portion 24a; 34a of media 24; 34.
  • the second secondary portion 24e; 34e has an increasing thickness L5 as a function of the height H1 of the main portion 24a; 34a.
  • the thickness L5 is zero at the lower end wall Ei_M of the main portion 24a; 34a of media 24; 34 and maximum at the upper end wall Es_M of said main portion.
  • the extra thicknesses S1, S2 forming the pressure drop generation member could start at a distance from the bottom wall Ei_B of the battery 20; 30, for example at a distance, for example between 90% and 25% of the height HB.
  • the maximum thickness L5 of the second secondary portion 24e; 34e is less than the constant thickness L1 of the main portion 24a; 34a, for example less than or equal to half the thickness L1 of the main portion 24a; 34a.
  • the height H1 of the main portion 24a; 34a here corresponds to the height HB of the heat exchange battery 20; 30.
  • the thickness L1 of the main portion 24a; 34a corresponds to the minimum thickness of the humidification member 24, 34.
  • the maximum thickness of the humidification member 24, 34 corresponds to the sum of the minimum thickness L1 and the thickness L4, L5 of the extra thicknesses S, S2.
  • the second additional thickness S2 and corresponds to a symmetry of the first additional thickness S1 with respect to the main portion 24a; 34a.
  • the head loss generation member can be part of the humidification member or media 24, 34 or be separate from said humidification member 24; 34 and fixed to the humidification member 24; 34, for example by gluing or other fixing means.
  • the main portion 24a; 34a and the secondary portions 24d, 24e; 34d, 34e can be formed from a single media and then cut directly from the mass of media.
  • the thickness L of the humidification member 24, 34 gradually increases from the wall lower end Ei_M towards the fan 16 to its upper end wall Es_M.
  • the extra thicknesses S1, S2 are distinct from the main portions 24a; 34a, said secondary portions could be made of the same material as the main portion or of another material.
  • the first additional thickness S1 forms a projecting portion of the internal wall of the main media portion 24a and the second additional thickness S2 forms a projecting portion of the external wall of the main media portion 24a.
  • the device for humidifying the air of the cooler or condenser could have no humidification device and could comprise the spray system 40a, 40b described with reference to the embodiment of the picture 3 .
  • Such an embodiment is illustrated in the figure 7 .
  • the member 25a, 25b for generating a pressure drop comprises a plurality of flaps, fins or lamellae, or even slatted blinds arranged here downstream of the associated battery 20, 30 in the direction of circulation of the flow d 'air.
  • the device 25a, 25b for generating a pressure drop can be fixed to the internal face of the associated battery 20, 30, or placed at a distance from the latter.
  • the device 25a, 25b for generating a loss of charge could also be arranged upstream of the associated battery 20, 30, for example between the air humidification device 23, 33 and said battery 20, 30.
  • the fins of the member 25a, 25b for generating a pressure drop are inclined towards the member for moving the air flow 16 according to different opening angles.
  • the opening angle corresponds to the angle formed between the fin and a horizontal axis perpendicular to the battery.
  • the opening angle of the fins is greater towards the upper end of the coil 20, 30, in order to generate a pressure drop on the flow of air passing through said fins along the height HB of the coil 20.
  • the head loss coefficient increases along said height HB.
  • the fins of the member 25a, 25b for generating a pressure drop could be inclined in different orientations while maintaining a maximum pressure drop coefficient close to the flow setting member. air 16.
  • the number of fins of the member 25a, 25b for generating a pressure drop can vary according to the height HB of the battery 20.
  • the variation in the number of perforations according to the height of the battery thus generates a pressure drop according to said height.
  • the embodiment illustrated in the figure 9 differs from the embodiment illustrated in the figure 8 only by the fact that the device for humidifying the air of the cooler or condenser has no humidification member and comprises the spray system 40a, 40b described with reference to the embodiment of the picture 3 .
  • the embodiment illustrated in the figure 10 differs from the embodiment illustrated in the figure 8 only by the fact that the batteries 20, 30 are not vertical and are each here arranged inclined with respect to the vertical direction, in order to form together a V-shape.
  • the embodiment illustrated in the figure 11 differs from the embodiment illustrated in the figure 9 only by the fact that the batteries 20, 30 are not vertical and are each here arranged inclined with respect to the vertical direction, in order to form together a V-shape.
  • the adiabatic cooler or condenser 10 comprises a pressure drop generation member having a pressure drop coefficient according to the height of the heat exchanger.
  • the pressure drop generating member may comprise an internal and/or external extra thickness, extending only over part of the height of the heat exchanger.
  • the thickness of the extra thickness increases along the height of the heat exchanger up to the upper end zone of the heat exchanger.
  • the extra thickness makes it possible to modulate the pressure drop according to the height of the heat exchanger.
  • the pressure drop generation member is not created by an extra thickness, but by a perforated sheet, the variation in the number of perforations along the height of the battery generates a pressure drop along said height.
  • the head loss generating member can be arranged upstream and/or downstream of the heat exchanger.
  • the head loss generation member can be located upstream and/or downstream of said humidification member.
  • the heat exchange of the adiabatic cooler or condenser is increased and the cooling is homogenized according to the height of the battery.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Battery Mounting, Suspending (AREA)
EP21208966.8A 2020-12-22 2021-11-18 Adiabatischer kühler oder kondensator mit einem organ zur erzeugung eines variablen druckverlustes Active EP4019882B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2013891A FR3118152B1 (fr) 2020-12-22 2020-12-22 Refroidisseur ou condenseur adiabatique comprenant un organe de génération de perte de charge variable

Publications (2)

Publication Number Publication Date
EP4019882A1 true EP4019882A1 (de) 2022-06-29
EP4019882B1 EP4019882B1 (de) 2023-01-25

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Application Number Title Priority Date Filing Date
EP21208966.8A Active EP4019882B1 (de) 2020-12-22 2021-11-18 Adiabatischer kühler oder kondensator mit einem organ zur erzeugung eines variablen druckverlustes

Country Status (2)

Country Link
EP (1) EP4019882B1 (de)
FR (1) FR3118152B1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1375105A (fr) * 1963-07-23 1964-10-16 Dispositif de condenseur refroidi par l'air
FR2198113A1 (de) * 1972-08-29 1974-03-29 Transelektro Magyar Villamossa
EP0172403A1 (de) * 1984-07-26 1986-02-26 Siemens Aktiengesellschaft Verdunstungskühlturm
US20180128525A1 (en) * 2016-07-22 2018-05-10 Evapco, Inc. Ultra narrow channel ultra low refrigerant charge evaporative condenser

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1375105A (fr) * 1963-07-23 1964-10-16 Dispositif de condenseur refroidi par l'air
FR2198113A1 (de) * 1972-08-29 1974-03-29 Transelektro Magyar Villamossa
EP0172403A1 (de) * 1984-07-26 1986-02-26 Siemens Aktiengesellschaft Verdunstungskühlturm
US4662902A (en) * 1984-07-26 1987-05-05 Kraftwerk Union Aktiengesellschaft Evaporation cooling tower
US20180128525A1 (en) * 2016-07-22 2018-05-10 Evapco, Inc. Ultra narrow channel ultra low refrigerant charge evaporative condenser

Also Published As

Publication number Publication date
EP4019882B1 (de) 2023-01-25
FR3118152B1 (fr) 2022-11-04
FR3118152A1 (fr) 2022-06-24

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