WO2022051730A1 - Unité et procédé de régulation d'humidité - Google Patents

Unité et procédé de régulation d'humidité Download PDF

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Publication number
WO2022051730A1
WO2022051730A1 PCT/US2021/049324 US2021049324W WO2022051730A1 WO 2022051730 A1 WO2022051730 A1 WO 2022051730A1 US 2021049324 W US2021049324 W US 2021049324W WO 2022051730 A1 WO2022051730 A1 WO 2022051730A1
Authority
WO
WIPO (PCT)
Prior art keywords
bypass
air
ambient
airstream
plenum
Prior art date
Application number
PCT/US2021/049324
Other languages
English (en)
Inventor
Michael Boucher
Rafael Neuwald
Original Assignee
Munters Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/013,747 external-priority patent/US11598535B2/en
Application filed by Munters Corporation filed Critical Munters Corporation
Publication of WO2022051730A1 publication Critical patent/WO2022051730A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/001—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems in which the air treatment in the central station takes place by means of a heat-pump or by means of a reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/147—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with both heat and humidity transfer between supplied and exhausted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/153—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature

Definitions

  • the present invention relates to air conditioning and dehumidification equipment and methods, and more particularly to an air conditioning method and apparatus using desiccant wheel technology to control humidity while providing increased air flow capacity.
  • SUBSTITUTE SHEET (RULE 26) directly, as is, or alternatively is cooled either by direct evaporative means or through more traditional refrigerant-type air conditioning equipment.
  • the desiccant wheel is regenerated with a second airstream which originates either from the enclosure being air conditioned or from the outside air.
  • Desiccant cooling systems of this type can be designed to provide very close and independent control of humidity and temperature, but they are typically more expensive to install than traditional systems.
  • U.S. Pat. No. 3,401,530 to Meckler, U.S. Pat. No. 5,551,245 to Carlton, and U.S. Pat. No. 5,761,923 to Maeda disclose other hybrid devices wherein air is first cooled via a refrigerant system and dried with a desiccant.
  • high regeneration temperatures are required to adequately regenerate the desiccant.
  • dual refrigerant circuits are needed to increase or pump up the regeneration temperature to above 140° F.
  • waste heat from an engine is used rather than condenser heat.
  • multiple units may be needed to meet capacity requirements.
  • multiple units may be needed to meet capacity requirements.
  • climate conditions where the air is dry such units, depending on the surrounding climate, may provide warmer and drier air than needed.
  • the present invention allows, in such conditions, the supply of larger volumes of conditioned air at the desired temperature and humidity.
  • Yet another object of the present invention is to provide a higher air flow capacity desiccant based dehumidification and air conditioning system which is relatively inexpensive to manufacture and to operate.
  • a further object of the present invention is to provide an air conditioning system which enables the operator to vary the proportioning of desiccant treated supply air with additional volume of cooled outside air that does not require further drying.
  • an air conditioning and dehumidification system and method utilizes multiple air plenums in or with a housing that has first and second plenums separated by an intermediate wall.
  • the first plenum is used to supply and treat an ambient airstream and then supply that treated air to an enclosure or other area to be cooled or treated.
  • the system also includes a liquid vapor refrigeration circuit which contains an evaporator located in the first plenum to cool and dehumidify ambient air entering the first plenum and a condenser coil in the second plenum.
  • a supply fan is associated with the first plenum to draw ambient air into the plenum and supply the treated air from the plenum to the enclosure, area or space.
  • a condenser fan is associated with the second plenum to draw another ambient airstream into the second plenum which then passes through the condenser and is heated.
  • a desiccant dehumidification system is included in the system which utilizes a rotatably mounted desiccant wheel mounted to extend transversely to and through the intermediate wall so that a segment of the wheel is present in the first, process air, plenum and another segment is present in the second plenum, downstream of the condenser to receive air heated in the condenser as regeneration air to regenerate the desiccant wheel as it rotates during operation and after which the regeneration air is exhausted to the atmosphere.
  • a third ambient air plenum is also provided as an ambient air by-pass through which ambient air is selectively supplied to the enclosure or space as capacity needs are required without treatment in the first plenum by the desiccant wheel.
  • the third plenum contains a device for cooling the ambient air drawn into the third plenum by a fan or the like before supplying that
  • the cooling device may be a cooler coil from a water chiller system or an evaporator coil from a DX refrigeration system that is independent from the DX system used with the first and second plenums.
  • conditioned air is supplied to an enclosure or space by cooling a first ambient supply airstream with the evaporator cooling coil of a DX refrigeration system and then passing the thus cooled and dehumidified first airstream through the process segment of a rotating desiccant wheel to further reduce moisture content in the first ambient airstream. Thereafter this treated first ambient airstream is supplied to the enclosure.
  • the desiccant wheel is regenerated by a second ambient airstream supplied to the second plenum which first passes through the DX condenser coil in the second plenum where its temperature is raised before passing through the desiccant wheel segment in the second plenum to regenerate the wheel. After passing through the wheel the second ambient airstream is exhausted to the atmosphere.
  • a third ambient airstream is selectively supplied to a third plenum preferably by a fan that is preferably independent from those fans associated with the first and second plenums.
  • This third airstream is selectively cooled by a DX system that is independent from the cooling system used in the first and second plenums, before being supplied to the enclosure without treatment by the desiccant wheel.
  • a damper may be placed between the third ambient airstream and the first airstream, downstream of the desiccant wheel, with a fan located in the first airstream also downstream of the desiccant wheel so that the fan or fans in the first airstream pull the total volume of air from the first and third plenums through the system.
  • the user can increase the volume of ambient air supplied to the enclosure to better and more efficiently control the temperature and humidity of the air delivered to the enclosure when ambient temperature and humidity conditions are such that dehumidification of all the ambient air at the higher air volumes required by the operator is not necessary.
  • Fig. l is a schematic top plan view of a prior art air conditioning and humidity control unit
  • FIG. 2 is a schematic side view of the prior art unit shown in Fig. 1;
  • Figure 3 is a schematic side view of an air conditioning and humidity control unit according to the present invention.
  • Figure 3A is a schematic side view of another embodiment of an air conditioning and humidity control unit according to the present invention including an optional pre-treatment device;
  • Figure 4 is a top plan view of the view of the embodiment of Figure 3 with the by-pass plenum removed for clarity;
  • Figure 4A is schematic side view of the plenum 18 shown in Figures 4, including the bypass plenum;
  • Figure 4B is a schematic side view of the plenum 16 shown in Figure 4, including the bypass plenum.
  • Figure 5 is a block diagram of control of the system of the present invention.
  • a prior art air conditioning unit 10 is illustrated of the type generally disclosed in U.S. Patent Nos. 6,557,365, 6,711,907 and 7,047,751.
  • the unit 10 includes a housing 12 having a separator wall 14, generally centrally located and dividing the housing into separate air plenums, namely a first plenum 16 and a second plenum 18.
  • the unit is intended to use essentially only outside ambient air to supply conditioned dehumidified air at appropriate or desired temperature and humidity conditions to an enclosure or space 20.
  • the prior art air conditioning unit of Fig. 1 also includes an associated direct liquid vapor compressing expansion refrigeration system (DX) 24.
  • the DX system 24 includes an evaporator or cooling coil 26 and a condenser coil 28, as well as one or more compressors and expansion
  • SUBSTITUTE SHEET (RULE 26) valves (not shown) connected by liquid vapor piping 30 shown in dashed and dotted lines If plural compressors are provided, they can be activated sequentially so as to provide incremental stages of refrigeration.
  • the evaporator coil 26 is located in the first plenum 16 adjacent an ambient air inlet 31 in housing 12.
  • the condenser coil 28 is located in plenum 18 adjacent another ambient air inlet 32 in housing 12.
  • Fans 34 and 36 are provided in or connected to plenums 16 and 18 to draw ambient air into the respective plenums.
  • the housing 12 also contains a conventional rotatable desiccant wheel 38 which is rotatably mounted in housing 12 transverse to wall 14 and extending partly through the wall so that a segment (about half) of the wheel is exposed to the ambient airstreams in plenums 16, 18, during rotation of the wheel when the unit is in operation.
  • These segments are designated 40 in the first plenum 16 (also called the process segment for the process air) and 42 in the second plenum 18 (also called the regeneration segment for the regeneration airstream).
  • the unit of the prior art continuously supplies conditioned outside air to the enclosure. Waste air from the enclosure is exhausted in any convenient manner by fans or the like (not shown) as is known in the art.
  • the first ambient or process airstream A is drawn by fan 34 into plenum 16 where it is cooled and dehumidified by the evaporator coil 26.
  • the airstream A is then further dehumidified by desiccant wheel 38 in segment 40.
  • Appropriate controls are used for the DX system 24 and to vary the speed of rotation of the wheel 38 so that the air leaving plenum 16, through an opening 44 in housing 12, has the desired temperature and humidity conditions for the space 20.
  • ambient or outside air is also used to regenerate the desiccant wheel. That outside air, drawn in by fan 36, passes through condenser coil 28 to increase the temperature of the second ambient airstream B. This heated airstream is then passed through the regenerating section 42 of desiccant wheel 38 to remove moisture from the wheel. The second or regeneration airstream is then exhausted to the atmosphere.
  • This prior art system may also have means to provide some or all of the air from the enclosure to the ambient airstream A for treatment in plenum 16.
  • Air conditioning units of the prior art as thus described have been very efficient and successful in use. However, under certain climate conditions or for certain facilities the user requires greater air flow volumes than can be treated by one unit to condition the space involved
  • SUBSTITUTE SHEET (RULE 26) while requiring less dehumidification of the air to achieve the desired humidity condition for the volume of air to be supplied to the enclosure or space. To satisfy that need it is typically required to use two or more such units which increases the expense for the user or produces more dehumidification than is required for the space involved.
  • climate conditions in certain areas may be such that adequate dehumidification for the air supply to the enclosure can be achieved with a single unit and dehumidification wheel.
  • FIGs 3 and 4 illustrate additional embodiments of an air conditioning and deh6midification unit 50 according to the present invention.
  • unit 50 shown in Figure 3 has first and second air plenums 16, 18 (not seen in Fig. 3) separated by a central wall 14.
  • Ambient air constituting the process or supply airstream 0A enters housing 12 at opening 31 under the influence of a fan 34.
  • the airstream may be first passed through a conventional air filter 52 and then through a water chiller 54 for preliminary cooling, if necessary or desired.
  • condensing coil of a separate DX system (not shown) down stream of opening 31 and before cooling coil 26 that will give off heat to the ambient air when conditions warrant that.
  • condensing coil in the system gives off heat to the ambient air when conditions warrant that.
  • the air is treated in the DX system evaporator coil 26 where it is dried and cooled and then passed through the process air segment 40 of desiccant wheel 38 in which it is further dried. From there it is supplied to the enclosure or space 20.
  • the second ambient airstream is drawn into plenum 18 on the opposite side of wall 14 from plenum 16 by fan 36, (Fig. 4). It is first passed through condenser coil 28 of the DX system to be heated and, as before, then passed through the regeneration section 42 of desiccant wheel 38 to regenerate the wheel; it is then exhausted to the atmosphere.
  • a third air plenum 55 (Fig. 3) is provided to supply a volume of cooled ambient air to the enclosure without passage through the desiccant wheel.
  • This plenum is provided in any convenient manner and is illustrated as a duct that is mounted on or formed as part of the housing 12, above the top 58 of plenums 16 and 18. However it will be understood that it can be associated with the system in any convenient manner.
  • the third air plenum 55 can communicate with the first air plenum 16 through passage 56 in the top wall 58 of housing 12.
  • the passage 56 is opened or closed by a damper 60 of any convenient or known construction so that when the damper is opened, or partially opened, some of the ambient air drawn into plenum 16 is also drawn into plenum 55 by a third plenum fan 64.
  • the damper 60 is controlled by any known control system to open or close the damper or hold it in partly opened positions to control the amount of air entering the third plenum.
  • the third airstream in plenum 55 may selectively be cooled as required by the evaporator coil 59 of a DX refrigeration system that is independent of the DX system 24 used in the first and second plenums or by a separate water-chilled cooler.
  • the cooled third airstream by-passes the desiccant wheel in housing 12 and is returned to the first or process airstream in plenum 16 downstream of the desiccant wheel through another passageway or opening 66 under the control of a damper 68.
  • the damper 68 is opened and closed by a control system as would be understood by those skilled in the art.
  • the fan 64 can be eliminated and the fan 34 used alone to draw outside air into plenum 16 and thence a portion of it into plenum 55 through passage 56 before passing through the evaporator 26.
  • the first and third airstreams mix and are supplied together to the enclosure. Where conditions warrant, sufficient air is dried in the first plenum to reduce the humidity and temperature of a part of the required volume of supply air, while a portion of ambient air is simply cooled (and partly dried when an evaporator coil 59 is used), so that when the two airstreams mix the result has the desired overall temperature and humidity conditions needed in the enclosure.
  • the fan 64 instead of using the damper 60 to control air flow the fan 64 could be provided as a modulating fan that can vary the outside air flow through plenum 55 from passage 56 or, as described below, through an ambient air inlet in end wall 69.
  • the third plenum can be constructed so that an ambient air inlet is provided in its end wall 69 which can be opened and closed by a damper similar to damper 60 described above.
  • FIG. 3 a illustrates alternative embodiments of the invention in which a pretreatment unit 70 is provided to cool the ambient airstream before it enters the first plenum.
  • This pretreatment unit may be a heat exchanger of any known type including for example an enthalpy wheel 72.
  • the ambient airstream enters the enthalpy wheel 72 and is cooled before entering the evaporator 26.
  • the enthalpy wheel is regenerated by return air removed from the enclosure by a separate ducting system and then exhausted to the atmosphere.
  • FIG. 3 A also illustrates that rather than mixing the bypass air in the first plenum, the third plenum can be extended at its discharge end 80 to supply the bypass air directly to the enclosure.
  • Figures 4, 4A and 4B illustrate another embodiment of the invention which is adapted to direct a portion of the heated air in plenum 18 leaving condenser 28 into the third plenum55. This is accomplished by the use of a selectively operable damper 57 which allows some of the heated air from the condenser 28 to enter plenum 55 to heat or replace the ambient air normally in that plenum. The damper 57 would typically be operated when the outside air temperature is at or below the temperature the bypass air is designed to provide. Details of this embodiment follow.
  • the present invention effectively and efficiently dehumidifies and cools process air to be supplied to a space using the desiccant wheel 38 and the DX system 24.
  • dehumidification may be needed, but not enough to operate the desiccant wheel.
  • a wheel bypass damper (unshown) can open to reduce air pressure drop and fan 34 can be operated at a lower speed to save energy.
  • the wheel bypass damper is designed to bypass the airflow in first plenum 16 around the process segment of the desiccant wheel.
  • a second wheel bypass damper can be provided to bypass the airflow in second plenum 18 around the regeneration segment of the desiccant wheel.
  • the target dewpoint is 45° F and the ambient air temperature is 49° F
  • operating the first stage compressor may be sufficient to achieve the desired dewpoint without the use of the desiccant wheel.
  • the resulting supply air would be cooled to 45° F, which may be lower than the desired supply air temperature. In that case, the supply air is
  • SUBSTITUTE SHEET (RULE 26) preferably heated before entering the space.
  • this is achieved by using a portion of the air in plenum 18 heated by condenser 28 and bypassing that heated air to the supply airflow, preferably via third air plenum 55.
  • This bypass is achieved by opening damper 57 to the desired degree, so as to control the amount of heated air from the second air plenum 18 to be directed to the third air plenum 55.
  • the embodiments of the present invention can use a system controller as shown in Figure 5.
  • the internal functions of the system are controlled by a controller 90, which is preferably constituted by a microprocessor, but not limited thereto.
  • Controller 90 can be controlled by an external control source that provides run commands.
  • the controller 90 can be associated with various system sensors 92 so as to monitor one or more of internal pressures, temperature and humidity, as well as ambient (outside) temperature and dewpoint and space (inside) temperature and dewpoint.
  • the controller 90 communicates with the DX system 24, the desiccant wheel 38, the various fans 34, 36, 64, and the various dampers 57, 60, 68, so as to reliably control the system functions.
  • the controller can be programmed to stage dehumidification, cooling, and heating as well as damper operation.
  • the controller can control the fans 34, 36 and staged operation of the compressors in the DX system 24 to the desired level of supply airflow, dehumidification, cooling, and regeneration, control a motor that drives the desiccant wheel 38 so that it is stopped or rotates (continuously or intermittently) at a target rotational speed to achieve the desired level of dehumidification, and control motors that operate dampers 57, 60, 68 from a closed state to a target aperture to control the flow of bypass air through the system.
  • controller 90 can control fan 64 to control the flow of bypass air through the third air plenum 55.
  • controller 90 receives a run signal to initiate operation of supply fan 34 based on a set point.
  • controller 90 controls stages of dehumidification and cooling by controlling stages of compressors of DX system 24, the rotation of desiccant wheel 38, and the rotational speeds of supply and regeneration fans 34, 36.
  • the controller 90 further modulates the temperature and humidity of the supply air by modulating the flow of bypass air through the third air plenum 55 by controlling dampers 60, 68 and/or fan 64.
  • the controller 90 controls to shut
  • SUBSTITUTE SHEET (RULE 26) down the desiccant wheel, open the bypass in the first plenum 16 around the desiccant wheel, and set the DX system at the first stage. If the dehumidified supply air is at a temperature lower than the target temperature, controller 90 controls to open damper 57 to direct air in air plenum 18, after being heated by condenser coil 28, to the third air plenum so as to increase the temperature of the supply air.
  • fan 64 is not provided and dampers 60, 68 are stationary, at least during operation. In such a case, the flow of air through the third air plenum is completely dependent on the speed of fan 34, and, if damper 57 is open, the speed of fan 36. Those fans, the DX system, and the desiccant wheel are adjusted to modulate the temperature and moisture content of the supply air. No adjustments are made in the third air plenum.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Central Air Conditioning (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Dans un procédé et un appareil de conditionnement d'air pour une enceinte, un premier courant d'air ambiant est refroidi par une bobine de refroidissement d'un système de refroidissement de réfrigérant pour réduire la température et l'humidité, introduit dans un segment d'une roue dessiccative tournante pour réduire la teneur en humidité et augmenter la température, puis fournie à l'enceinte. La roue dessiccative est régénérée au moyen d'un deuxième flux d'air ambiant chauffé par la bobine de condensateur du système réfrigérant et introduit ensuite dans le segment de régénération de la roue dessiccative. Un plénum de dérivation permet à un troisième flux d'air ambiant d'être chauffé sélectivement et refroidi indépendamment de la bobine d'évaporateur et de la roue dessiccative dans le premier plénum. L'air chauffé dérivé du deuxième flux d'air ambiant ou d'un dispositif de chauffage indépendant peut effectuer le chauffage sélectif dans le plénum de dérivation. Ce flux d'air dans le plénum de dérivation est ensuite alimenté avec l'air traité dans le premier plénum vers l'enceinte.
PCT/US2021/049324 2020-09-07 2021-09-07 Unité et procédé de régulation d'humidité WO2022051730A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17/013,747 US11598535B2 (en) 2017-11-28 2020-09-07 Humidity control unit and method
US17/013,747 2020-09-07

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WO2022051730A1 true WO2022051730A1 (fr) 2022-03-10

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040089002A1 (en) * 2002-11-08 2004-05-13 York International Corporation System and method for using hot gas re-heat for humidity control
US6751964B2 (en) * 2002-06-28 2004-06-22 John C. Fischer Desiccant-based dehumidification system and method
JP2018039514A (ja) * 2012-08-05 2018-03-15 株式会社横浜熱利用技術研究所 乗物用除湿装置
US20190162431A1 (en) * 2017-11-28 2019-05-30 Munters Corporation Humidity Control Unit and Method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6751964B2 (en) * 2002-06-28 2004-06-22 John C. Fischer Desiccant-based dehumidification system and method
US20040089002A1 (en) * 2002-11-08 2004-05-13 York International Corporation System and method for using hot gas re-heat for humidity control
JP2018039514A (ja) * 2012-08-05 2018-03-15 株式会社横浜熱利用技術研究所 乗物用除湿装置
US20190162431A1 (en) * 2017-11-28 2019-05-30 Munters Corporation Humidity Control Unit and Method

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