EP1034403B1 - Verfahren zum verteilen von kühlluft in einem raum - Google Patents

Verfahren zum verteilen von kühlluft in einem raum Download PDF

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Publication number
EP1034403B1
EP1034403B1 EP98953111A EP98953111A EP1034403B1 EP 1034403 B1 EP1034403 B1 EP 1034403B1 EP 98953111 A EP98953111 A EP 98953111A EP 98953111 A EP98953111 A EP 98953111A EP 1034403 B1 EP1034403 B1 EP 1034403B1
Authority
EP
European Patent Office
Prior art keywords
air
room
ceiling
cooling
ceiling element
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.)
Expired - Lifetime
Application number
EP98953111A
Other languages
English (en)
French (fr)
Other versions
EP1034403A1 (de
Inventor
Stein Roessel
Per Bakstad
Ole Jan Skogen
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.)
ABB Miljo AS
Original Assignee
ABB Miljo AS
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19901280&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1034403(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ABB Miljo AS filed Critical ABB Miljo AS
Publication of EP1034403A1 publication Critical patent/EP1034403A1/de
Application granted granted Critical
Publication of EP1034403B1 publication Critical patent/EP1034403B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0089—Systems using radiation from walls or panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/00075—Indoor units, e.g. fan coil units receiving air from a central station

Definitions

  • the present invention relates to a method for distributing cooling air into a room in accordance with the pre-characterising portion of claim 1. Such a method is known from DE-A-4 015 665.
  • Cooling of personnel rooms is in terms of ventilation engineering far more demanding than heating. While a stream of warm air feels comfortable in a room that needs heating, will a noticeable stream of cooled air in the warm room feel uncomfortable, and will often be perceived as a draft.
  • Cooling ceilings is known from the ventilation engineering.
  • the ceiling in the room will be partly or totally cooled down with built-in piping loops with cold water or a cooling medium.
  • Built-in channels with cooled air is also used.
  • Such cooling feeling give a comfortable and uniform cooling effect, partly by radiation and partly by draft-free natural convection.
  • Cooling ceilings may be used alone or in combination with traditional cooling through the ventilation system. Cooling ceiling reduces the demand for air cooling, so that the cooling air may be supplied without draft problems.
  • Cooling ceilings are, however, an expensive solution, and therefore it is no longer widely used.
  • Figure 1 of the drawing shows schematically a side view of the device according to the invention, mounted on a ceiling in a room
  • figure 2 shows a corresponding view another embodiment which does not fall within the scope of the claims.
  • a ceiling element 2 consisting of a plate of a heat conductive material. This is a single metal plate with a rounded shape, which forms a limited basin for ventilation air under the ceiling of the room.
  • a moderate amount of ventilation air, cold enough to meet the entire rooms demand for cooling, is supplied to the air basin above the ceiling element 2 with a ventilation channel 3 and one or more supply devices 4, which distribute the air uniformly and very low speed into the air basin over the ceiling element 2.
  • the cold air sinks naturally down to the bottom of the basin and cools the ceiling element 2, which thereby functions as a cooling ceiling for the room below.
  • the ceiling element absorb heat from the room, partly through radiation, partly through convection, and this heat will be transferred to the cooling air and increase its temperature.
  • the cooling air which is prewarmed in this way rises naturally up and passes further into the room as ventilation air through slits 5. This air is still cool, but no longer so cool that it gives any effect of draft in the room.
  • the large area of the slits 5 causes the air speed to be low, in the area of 0,2 to 0,6 m/sec, and causes therefore no air motion or streams that can be perceived as draft in the room (diffuse air supply).
  • the ceiling element 2 has a convex outside shape as shown on figure 1.
  • the shape in terms of air flow, must be such that the most prewarmed cooling air passes out in the room through the slits 5.
  • the convex shape shown in figure 1 is considered the most suitable.
  • the ceiling element 2 may be made in metal or other material.
  • a sound dampening layer on the lower side of the element or a double plate where the lower plate is perforated, may often be desirable because of the acoustic conditions in the room.
  • the entire element must have sufficient heat conductivity to transfer the necessary part of the cooling effect of the air through the material of the element 2, and from there to the room.
  • a lower conductivity, as for example a thin building plate, will demand a correspondingly larger area of the element 2 to create the same effect. It is also possible to increase the heat conductivity by using a corrugated plate or a plate with ribs or similar.
  • the cooling air from the ceiling element 2 may be 30-50 % of the rooms need for cooling, while the prewarmed cooling air from the slits 5 covers the remaining demands for cooling.
  • the temperature of the ventilation air from the channel 3 may be 12-14 °C lower than the room temperature without creating the effect of draft in the room.
  • Typical cooling capacity for ceiling element 2 is in the area of 30-60 W/m 2 .
  • a supply device for cooling air to room cooling presents demands to the purity of the supplied cooling air. It must contain a minimum of particles that could be deposited as dust in the bottom of the air basin over the ceiling element 2. Such a layer of dust will reduce the heat conductivity through the element, and dust could be blown out in the room when the amount of cooling air increases. It has been found suitable to make the supply devices 4 as one or more filter bags in order to separate dust from the cooling air, which are replaceably mounted on the air channel 3.
  • the ceiling element 2 is sectioned and turnably mounted on the ceiling, so that it can be turned down for cleaning on the top side and for replacing of the filter bags as a part of routine maintenance.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Building Environments (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Duct Arrangements (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Central Air Conditioning (AREA)
  • Disintegrating Or Milling (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Claims (3)

  1. Verfahren zum Verteilen von Kühlluft in einen Raum von dessen Decke (1) aus, bei dem kühle, gefilterte Luft durch einen Luftkanal (3) zu mindestens einer Luftzufuhrvorrichtung (4), die über einem Deckenelement (2) aus Wärme leitendem Material angeordnet ist, geleitet wird, wobei die kühle Luft von der mindestens einen Luftzufuhrvorrichtung (4) in mindestens einen Teil des Deckenelements (2) absinkt und dadurch das Deckenelement (2) abkühlt, welches wiederum den Raum durch Strahlung und Konvektion abkühlt, wobei das Deckenelement (2) als Becken geformt ist und durch die von der Zufuhrvorrichtung (4) kommenden kalten Luft gekühlt wird, wobei die Luft durch die Oberseite des Deckenelements (2) erwärmt wird, dadurch gekennzeichnet, dass das Becken eine runde Form mit einem die tiefste Stelle bildenden Mittelbereich aufweist und dass die Luft von dem die tiefste Stelle bildenden Mittelbereich bei Erwärmung in Richtung horizontaler Schlitze (5) in der Nähe der Oberkante des Deckenelements (2) in der Nähe der Decke des Raums aufsteigt, wobei die Luft von den Schlitzen (5) in den Raum verteilt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass Luftströmungsgeräusche durch eine akustische Dämpfungsschicht in der Luftzufuhrvorrichtung (4) gedämpft werden.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Deckenelement (2) zu Reinigungs- und Wartungszwecken abgesenkt wird, zu welchen Zwecken das Deckenelement (2) in Sektionen unterteilt ist.
EP98953111A 1997-10-31 1998-10-30 Verfahren zum verteilen von kühlluft in einem raum Expired - Lifetime EP1034403B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO975031A NO309542B1 (no) 1997-10-31 1997-10-31 Fremgangsmåte og anordning for trekkfri tilförsel av kjöleluft
NO975031 1997-10-31
PCT/NO1998/000329 WO1999026027A1 (en) 1997-10-31 1998-10-30 Method and device for the supply of cooling air

Publications (2)

Publication Number Publication Date
EP1034403A1 EP1034403A1 (de) 2000-09-13
EP1034403B1 true EP1034403B1 (de) 2003-08-27

Family

ID=19901280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98953111A Expired - Lifetime EP1034403B1 (de) 1997-10-31 1998-10-30 Verfahren zum verteilen von kühlluft in einem raum

Country Status (7)

Country Link
EP (1) EP1034403B1 (de)
AT (1) ATE248330T1 (de)
AU (1) AU1056999A (de)
DE (1) DE69817605D1 (de)
DK (1) DK1034403T3 (de)
NO (1) NO309542B1 (de)
WO (1) WO1999026027A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6874960B2 (ja) * 2016-10-14 2021-05-19 菊川工業株式会社 輻射式空調ユニット及びこれを用いた輻射式空調装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1679598A1 (de) * 1967-04-29 1971-04-22 Velox Werk Schnelle Herbert Deckenplatte mit Belueftungskammern
US5363908A (en) * 1990-02-24 1994-11-15 Koester Helmut Heating and cooling arrangement in particular of a structure suspended from a room ceiling
DE4015665C3 (de) * 1990-05-16 1995-06-01 Schmidt Reuter Klimasystem für Mehrraumgebäude
DE4308969C1 (de) * 1993-03-22 1994-07-28 Schmidt Reuter Kühldecke
DE9400738U1 (de) * 1994-01-18 1994-03-10 H. Krantz-Tkt Gmbh, 51465 Bergisch Gladbach Konvektives Kühlelement

Also Published As

Publication number Publication date
DE69817605D1 (de) 2003-10-02
NO975031L (no) 1999-05-03
DK1034403T3 (da) 2003-09-29
AU1056999A (en) 1999-06-07
NO975031D0 (no) 1997-10-31
ATE248330T1 (de) 2003-09-15
NO309542B2 (no) 2001-02-12
NO309542B1 (no) 2001-02-12
WO1999026027A1 (en) 1999-05-27
EP1034403A1 (de) 2000-09-13

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