EP2906470A1 - Refroidissement à absorption pour chariots et compartiments d'avion - Google Patents

Refroidissement à absorption pour chariots et compartiments d'avion

Info

Publication number
EP2906470A1
EP2906470A1 EP13814618.8A EP13814618A EP2906470A1 EP 2906470 A1 EP2906470 A1 EP 2906470A1 EP 13814618 A EP13814618 A EP 13814618A EP 2906470 A1 EP2906470 A1 EP 2906470A1
Authority
EP
European Patent Office
Prior art keywords
trolley
cooling
galley
conductive plate
thermal conductive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13814618.8A
Other languages
German (de)
English (en)
Inventor
Jean-Paul Libis
Franck MASSET
Yannick BRUNAUX
Andreas HOOGEVEEN
Fredric MUYU
Patrice Tochon
Jean-François FOURMIGUE
François BOUDEHENN
Delphine BOURDON
Stéphane Colasson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Safran Cabin Netherlands NV
Original Assignee
Commissariat a lEnergie Atomique CEA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Driessen Aerospace Group NV
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 Commissariat a lEnergie Atomique CEA, Commissariat a lEnergie Atomique et aux Energies Alternatives CEA, Driessen Aerospace Group NV filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP2906470A1 publication Critical patent/EP2906470A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/04—Galleys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
    • B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
    • B64D2013/0603—Environmental Control Systems
    • B64D2013/0629—Environmental Control Systems with subsystems for cooling food, catering or special loads

Definitions

  • Embodiments of the present invention relate generally to improved cooling systems and methods for use on aircraft trolleys and compartments.
  • Aircraft trolleys are used to chill and maintain the temperature of food and various other items that are to be served on-board an aircraft.
  • the trolleys are generally chilled via an airflow from an air chiller or compressor that is directed over the items in the trolley.
  • the trolley has an opening in the back that can be aligned with a cool air blower that causes air to flow into the trolley and around the food and beverage items contained therein. This configuration can make it difficult to move and interchange the trolleys. Improvements to these cooling systems would be beneficial.
  • FIG. 1 shows a side cross-sectional view of a trolley cooling system.
  • FIG. 2 shows a side cross-section view of an alternate trolley cooling system.
  • FIG. 3 shows a schematic of the trolley cooling systems of FIGS. 1 and 2.
  • FIG. 4 shows a top plan view of an alternate trolley cooling system.
  • FIG. 5 shows a schematic of the trolley cooling system of FIG. 4.
  • Absorption cooling uses a heat source to drive the cooling system.
  • an absorption refrigerator is a refrigerator that uses a heat source (such as a solar source, a kerosene-fueled flame, or waste heat from factories) to provide the energy needed to drive the cooling system.
  • a heat source such as a solar source, a kerosene-fueled flame, or waste heat from factories.
  • the vapor absorption cycle using water-ammonia systems was widely used, but upon development of the vapor compression cycle, it lost much of its use.
  • Absorption cooling technology has not been used for air conditioning or chilling inside aircraft.
  • the present inventors have determined that if an appropriate heat source could be provided, the use of absorption cooling on-board aircraft or other vehicles could be a viable alternative to the cooling that is provided by air chillers or compressors in order to recycle the heat and to reduce noise from the traditional cooling systems. Replacing an electric air chiller with an absorption cooler can also reduce electricity loads.
  • Embodiments of the present invention thus provide absorption cooling systems for trolleys and other containers in aircraft or other vehicle galleys.
  • the waste heat used to power the cooling system is provided from a fuel cell, which produces heat as one its by-products.
  • Fuel cell technology has been contemplated by the current assignee and its related companies for powering more and more aircraft systems, particularly various galley (and lavatory) systems, because it is a clean and efficient power source.
  • the primary way to make fuel cell technology efficient is by using the fuel cell byproducts (water, heat, and oxygen depleted air) in addition to the energy created that is created by the fuel cell.
  • One way to use the heat created is by delivering the heat to an absorptive cooling system. It should be understood that the heat may be provided from other aircraft systems, such as waste heat from one or more of the on-board ovens, from the aircraft engines, from the water system, or any other appropriate source.
  • a system 10 for absorptive cooling an aircraft trolley 12 or other compartment for use on board a passenger transport vehicle As shown in Figure 1, a thermal conductive plate 14 is positioned on the back 16 of the trolley 12, and another thermal conductive plate 18 is positioned on the back of the galley trolley bay 20 (the space into which the trolley 12 is stored) for thermal connection.
  • a fan 22 may be provided inside the trolley in order to generate air distribution through the trolley and over the items contained therein. This is an example of an "air over trolley.”
  • the thermal plates transfer the cold temperature that is generated by the absorption cooler to the trolley interior. Contact between the plates 14, 18 creates a thermal connection for a cooling exchange between the plates.
  • FIG. 1 also illustrates that a heat source 24 is positioned behind the monument back wall 20 and associated with the absorption cooling system 10. Waste heat from the heat source 24 is used to power the absorption cooling system 10. In a specific embodiment, the heat generated may be a by-product from a fuel cell used to power one or more aircraft systems.
  • a cooling fluid circuit 26 is also provided behind the back wall of the trolley bay 20. The coolant circuit 26 is associated with the thermal plate 18 of the back wall, as well as with the absorption cooling unit.
  • the coolant circuit 26 delivers the cooled fluid to the thermal plate 18. Its contact with the thermal plate 14 of the trolley transfers the cold to the trolley 12. Fan 22 helps recirculate cooled air inside the trolley 12.
  • the coolant circuit 26 may route cooled fluid to any number of galley bay locations such that multiple trolleys may be cooled at a time.
  • An adjustment system may be provided to ensure contact between the plates 14 and 18. Because the trolley has clearance and is moveable, an adjustment system may assure correct alignment of trolley to allow contact between the plates.
  • FIG 2 shows an embodiment with a duct 28 that has a fan 29 for air distribution or recirculation through the trolley 12.
  • Current installations also have ducting that may be connected to the air-chiller, which contains the cooling parts and a fan to recirculate the air through the ducting and the trolley (referred to as an "air through trolley").
  • air through trolley It is desirable to use standard trolleys in connection with this disclosure.
  • the trolleys are provided with thermal conductivity via plate 14, such that there is no need for electricity for the internal fan 22 as shown in Figure 1.
  • the schematic of Figure 3 shows how waste heat is delivered to an absorption cooler that uses the heat to drive the cooling system.
  • the cooled fluid may take a first path and be delivered to a compartment to be chilled, as necessary. It may also be delivered to the fluid coolant circuit to cool a galley wall thermal plate 18.
  • the coolant circuit 26 may use any appropriate cooling fluid (such as refrigeration fluid, cooled air, cooled water, or any other fluid).
  • any other form of heat/cold transportation can be used to deliver cooling fluid between the plates. Non-limiting examples include the thermal conductivity described, the use of heating pipes in contact, cooled air generation, and so forth.
  • thermal plate 18 on the monument aligns with a thermal plate 14 that is mounted on the back of the trolley to generate the desired cooling effect.
  • This system uses less power than an air chiller, it uses waste heat and thus improves efficiency, it provides cooling directly in the area where it is needed, and it provides a modular principle that can be used with each trolley inside the trolley bay.
  • absorptive cooling technology for chilling trolleys is shown in Figures 4 and 5. This concept provides an envelope of cooled air around the trolley, rather than using a thermal plate directly positioned on the trolley.
  • the trolley cooling system includes thermal cooling plates 30 on the galley stowage area, and they may be included on the top (the view of Figure 4 shows a top view so the top plate is not shown), back wall 36, as well as on the divider wall panels 38 between trolley storage areas.
  • the cooling fluid from the absorption cooler may be pumped through these plates 30, much like how the cooling fluid circuit cools the monument plate 18 described above.
  • Providing a plate 30 on the divider wall panel 38 allows the sides of two trolley carts 12 to be cooled with a single plate. This adds to efficiency of the system as the heat (cold) transfer happens on both sides. This creates a cooled or refrigerated area into which the trolley can be positioned.
  • a door or other cooled air containment feature may be added to the front of the trolley bay stowage area, but is not necessary as cooled air is generally desirable in the aircraft galley and cabin areas.
  • the trolleys may include internal fans (as discussed above) to help move and recirculate cooled air through and over the items in the trolley to improve cooling efficiency and to create an even temperature range.
  • External fans 40 may also be mounted to the back of the galley stowage space and are provided in order to circulate air over the trolley(s) to support the natural recirculation of air and to keep the temperature even in the trolley bay.
  • These embodiments can alleviate the need for a duct pipe that is typically provided at the back of the monument to deliver chiller air from the air chiller to the trolley. Providing even slight space gains can translate to major costs savings for the airline, as a few inches of space saved can mean additional passenger seats that can be added to the aircraft.
  • One of the other benefits of the above-described solutions is that they do not require modifications to current trolley designs or sizes, nor to the current catering processes. They also reduce electricity loads on the aircraft by providing cooled air using waste heat from fuel cells or other sources.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

Selon des modes de réalisation, la présente invention se rapporte de manière générale à des systèmes et procédés de refroidissement perfectionnés à utiliser sur des chariots et compartiments d'avion. Les systèmes utilisent un refroidissement à absorption à l'aide de plaques thermoconductrices positionnées de façon stratégique afin de garder les chariots et leurs contenus refroidis.
EP13814618.8A 2012-10-11 2013-10-11 Refroidissement à absorption pour chariots et compartiments d'avion Withdrawn EP2906470A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201261712368P 2012-10-11 2012-10-11
US201261712370P 2012-10-11 2012-10-11
PCT/IB2013/059310 WO2014057470A1 (fr) 2012-10-11 2013-10-11 Refroidissement à absorption pour chariots et compartiments d'avion

Publications (1)

Publication Number Publication Date
EP2906470A1 true EP2906470A1 (fr) 2015-08-19

Family

ID=49885318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13814618.8A Withdrawn EP2906470A1 (fr) 2012-10-11 2013-10-11 Refroidissement à absorption pour chariots et compartiments d'avion

Country Status (5)

Country Link
US (1) US20140102120A1 (fr)
EP (1) EP2906470A1 (fr)
CN (1) CN105102324A (fr)
CA (1) CA2887386A1 (fr)
WO (1) WO2014057470A1 (fr)

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DE102015102885A1 (de) * 2015-02-27 2016-09-01 Airbus Operations Gmbh System zum Herstellen einer Küchenanordnung für eine Kabine eines Fahrzeugs mit einem Hauptmodul und daran anbringbaren Zusatzmodulen, eine Küchenanordnung und ein Flugzeug mit einer solchen Küchenanordnung
US11072426B2 (en) * 2015-11-23 2021-07-27 The Boeing Company Galley system of an aircraft
DE102016222650B4 (de) * 2016-11-17 2022-09-08 Airbus Operations Gmbh Kühlanordnung für eine Bordküche und Verfahren zum Betreiben einer derartigen Kühlanordnung
US20230400241A1 (en) * 2022-06-08 2023-12-14 B/E Aerospace, Inc. Method for packaging and ducting a micro-chiller-style heat sink into a cart bay or other enclosure for optimal air circulation
US20230400231A1 (en) * 2022-06-08 2023-12-14 B/E Aerospace, Inc. High efficiency micro-chiller unit
US20240042823A1 (en) * 2022-08-03 2024-02-08 Hamilton Sundstrand Corporation Waste heat utilizing absorption refrigeration system for climate control and/or electric systems cooling

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Also Published As

Publication number Publication date
CN105102324A (zh) 2015-11-25
CA2887386A1 (fr) 2014-04-17
WO2014057470A1 (fr) 2014-04-17
US20140102120A1 (en) 2014-04-17

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