EP1959206B1 - Dispositif au sol et procédé destinés à l'aération, au chauffage et/ou au refroidissement d'une pièce - Google Patents

Dispositif au sol et procédé destinés à l'aération, au chauffage et/ou au refroidissement d'une pièce Download PDF

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Publication number
EP1959206B1
EP1959206B1 EP08001103.4A EP08001103A EP1959206B1 EP 1959206 B1 EP1959206 B1 EP 1959206B1 EP 08001103 A EP08001103 A EP 08001103A EP 1959206 B1 EP1959206 B1 EP 1959206B1
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Prior art keywords
air
room
secondary air
primary
primary air
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EP08001103.4A
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German (de)
English (en)
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EP1959206A1 (fr
Inventor
Ralf Wagner
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LTG AG
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LTG AG
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    • 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
    • F24F1/01—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/10—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with air supply, or exhaust, through perforated wall, floor or ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/40—HVAC with raised floors

Definitions

  • the invention relates to a method for ventilating, heating and / or cooling a room.
  • a method for air conditioning is known in which outside air is sucked by a fan and introduced into a double floor space. Through openings in the floor, the pumped air flows into a room to be conditioned. Furthermore, room air is sucked in by a further fan, fed to a heat exchanger and injected vertically upwards again into the room.
  • a method for cooling, heating and / or ventilating a room in which outside air is sucked in the floor area of the room and fed to an induction device.
  • the induction device blows the air into one Chamber, which is associated with a heat exchanger.
  • the blown air enters the room. Due to the induction effect of the induction device, room air flows through the heat exchanger and mixes with the outside air emerging from the induction device. In addition, it is possible to suck in room air from a fan of the induction device.
  • the invention has for its object to provide a method of the type mentioned above, which brings about a particularly pleasant room climate.
  • the air stratification contributes to a particularly pleasant room climate.
  • the lower layer of the stratification is formed by the source ventilation of the primary air and the upper layer of the air stratification by the mixed source ventilation of the secondary air, the mixed source ventilation is characterized in that its flow rate / momentum is so large that induces air in the air laterally room air becomes. This induction essentially takes place in the exit zone of the secondary air and is no longer present when the secondary air settles on the primary air or pushes, that is, where the momentum and thus the flow velocity is correspondingly reduced.
  • the primary air has such a small impulse that the source ventilation takes place.
  • the secondary air has a larger, namely a strong pulse, so that room air is induced in the air flow, thus causing an air mixture and therefore the mixed source ventilation is present.
  • primary air outside air is preferably used.
  • secondary air room air is preferably used.
  • the momentum with which the secondary air enters the room is chosen to be so large that room air is induced in the secondary air flow, so that the mixed source air flow thus formed has both temperature-treated or temperature-untreated secondary air and induced room air.
  • floor outlet grille or the like may be provided. These outlet grilles are aligned with the floor of the room.
  • the air outlet of the primary air to the air outlet of the secondary air is spaced, in particular horizontally spaced.
  • the two Bodenauslassgitter thus are not immediately adjacent to each other, but have a distance between them, which is large enough that the exiting air flows initially, ie in the exit area, do not touch, but only with distance to these outlets and after they essentially have horizontal flow directions meet.
  • the air outlet of the primary air is immediately adjacent to the air outlet of the secondary air. Also in this case, the two air currents do not interfere or at most smaller amounts of air flow both streams are mixed together before the horizontal currents superimpose.
  • the source air and the mixed source air enter the room in the vicinity of a facade of the room.
  • the arrangement is preferably made such that the outlet of the secondary air is closer to the facade than the exit of the primary air.
  • the mixed source air is introduced into the room in such a way that it flows upwards along an area of the facade. In the further course of flow, it then dissolves from the facade, flows approximately horizontally or inclined - at a vertical distance - over the exit point of the primary air, then flows obliquely down and then settles - laterally with distance to the exit point of the primary air - as an approximately horizontal flow over the primary air.
  • the primary air is supplied by a central device, in particular climate control center.
  • a central ventilation system there is a central ventilation system.
  • the primary air is preferably conducted by means of a primary air channel from the central device, in particular central air conditioning, to the corresponding room, which is to be ventilated or heated and / or cooled.
  • the primary air is supplied by a decentralized air conveyor. Then there is a decentralized ventilation device that does not require a central air conditioning unit and the like and therefore also no air distribution duct system.
  • the secondary air is conveyed by a decentralized air conveying device.
  • a decentralized air conveying device preferably two air conveyors are provided, namely one for the primary air and one for the secondary air, this configuration leading to a decentralized device.
  • the temperature treatment of the primary air is carried out by means of a primary air heat exchanger.
  • the temperature treatment of the secondary air is carried out by means of a secondary air heat exchanger.
  • primary air heat exchangers and secondary air heat exchangers can be designed as a common heat exchanger and used in this way. This means that two heat exchangers are combined as a unit, but have separate pipe systems, or that a common heat exchanger has only one pipe system, wherein the separation between the primary air heat exchanger and the secondary air heat exchanger is performed by acting only on the air partition wall.
  • the procedure is such that the flow of the mixed source air above the outlet of the source air has a vertical distance to the local flow of the source air.
  • the secondary air exiting initially vertically upward or approximately vertically upward with a correspondingly strong momentum changes its direction in the course of its flow in such a way that it flows substantially horizontally, so that the mentioned vertical distance to the outlet of the source air is present.
  • the source air flow continues to fall down, that is, it has an obliquely downward flow direction in order to approach the source ventilation causing primary air further. If the two air streams of source air and mixed source air finally meet then the mentioned air stratification is formed there. In the area of the air stratification is the stay zone of the room, in which a particularly pleasant room climate prevails.
  • the invention further relates to a device for ventilating, heating and / or cooling a room according to claim 14 in order to carry out the method mentioned above.
  • the two air flows initially arcuate, the secondary air passes through a much larger arc, and then flow approximately horizontally.
  • the device is designed as a central device having a primary air connection.
  • This primary air connection must be supplied by an air center or the like primary air. This is done for example via a primary air line.
  • the device is designed as a decentralized device having a primary air conveyor, in particular a primary air fan, preferably Primärluftradialventilator, and a primary air heat exchanger.
  • a primary air conveyor in particular a primary air fan, preferably Primär Kunststoffradialventilator, and a primary air heat exchanger.
  • primary air especially outside air, in the immediate vicinity of the device, for example, sucked on the facade of the room, upstream or downstream of the primary air conveyor is the primary air heat exchanger to optionally carry out a temperature treatment.
  • a secondary air conveying device in particular a secondary air fan, preferably a secondary air crossflow fan, is provided so that the intake of ambient air from the space can take place by means of this device.
  • a secondary air conveying device Upstream or downstream of this secondary air conveyor is the secondary air heat exchanger so that tion from a secondary air outlet directed upward or obliquely upward as mixed source air enters the room and then lays or slides with substantially horizontal flow over the source air, so that a (horizontal) air stratification arises. Both air flows initially arcuate, the secondary air passes through a much larger arc, and then flow approximately horizontally.
  • the device is designed as a central device having a primary air connection.
  • This primary air connection must be supplied by an air center or the like primary air. This is done for example via a primary air line.
  • the device is designed as a decentralized device having a primary air conveyor, in particular a primary air fan, preferably Primärluftradialventilator, and a primary air heat exchanger.
  • a primary air conveyor in particular a primary air fan, preferably Primär Kunststoffradialventilator, and a primary air heat exchanger.
  • primary air especially outside air, in the immediate vicinity of the device, for example, sucked on the facade of the room, upstream or downstream of the primary air conveyor is the primary air heat exchanger to optionally carry out a temperature treatment.
  • a secondary air conveying device in particular a secondary air fan, preferably a secondary air crossflow fan, is provided so that the intake of ambient air from the space can take place by means of this device.
  • a secondary air conveying device in particular a secondary air fan, preferably a secondary air crossflow fan, is provided so that the intake of ambient air from the space can take place by means of this device.
  • a secondary air conveying device upstream or downstream of this secondary air conveyor is the secondary air heat exchanger so that the secondary air, in particular room air, can optionally be heat-treated.
  • the FIG. 1 shows a section of a room 1 of a building, not shown.
  • the room 1 has a facade 2, which may be formed, for example, as a window facade.
  • a floor 3 of the room 1 is designed, for example, as an unfolded floor, so that a ventilation device 5 can be accommodated in a floor cavity 4.
  • the ventilation device 5 is therefore designed as underfloor device 6, ie as a bottom device 7, and is located close to, in particular adjacent to the facade 2.
  • the ventilation device 5 is used for ventilation, heating and / or cooling of the room. 1
  • the ventilation device 5 has a primary air device 8 and a secondary air device 9, wherein the two devices 8 and 9 are summarized in a total device. It is conceivable that the primary air device 8 as a module and also the secondary air device 9 are designed as a module, so that the ventilation device 5 can be composed of these two modules.
  • the primary air device 8 has one of the FIG. 1 non-emergent primary air connection (in the FIG. 2 provided with the reference numeral 10), to which a primary air line, not shown, is connected.
  • primary air 11 in particular conditioned primary air, preferably treated outside air
  • the Primär Kunststoffauslass 13 is aligned with the floor 3 of the room. 1
  • the secondary air device 9 has a secondary air inlet 14, which leads to a secondary air heat exchanger 15. Downstream of the secondary air heat exchanger 15 is a secondary air conveyor 16, which is designed as a secondary air fan 17, in particular cross-flow secondary air fan 18. Downstream of the secondary air conveyor 16 is a secondary air outlet 19 located at the level of the floor 3.
  • the arrangement may in particular be such that primary air outlet 13, secondary air inlet 14 and secondary air outlet 19 are covered by means of one and the same floor outlet grille 20.
  • the Bodenauslassgitter 20 is aligned with the floor 3 and preferably adjacent to the facade 2 at.
  • the secondary air outlet 19 is closest to the facade 2; It then follows at a distance from the secondary air inlet 14 and then - with a little greater distance from the facade 2 - the primary air outlet 13. It can be provided that primary air outlet 13 and secondary air inlet 14 are adjacent to each other.
  • the primary air outlet 13 has a distance, in particular a horizontal distance, to the secondary air outlet 19.
  • the primary air heat exchanger 12 may be formed separately from the secondary air heat exchanger 15, wherein - in the embodiment of FIG. 1 -
  • the two heat exchangers 12 and 15 standing upright and adjacent to each other are arranged.
  • the two heat exchangers 12 and 15 are each connected to a water system, is pumped through the cold or hot water, so that the respective air flow can be cooled or heated.
  • the two heat exchangers 12 and 15 are combined as a common component, wherein they are air-technically separated from each other by a partition, but the water cycle is the same for both heat exchanger units.
  • This small impulse causes the thus formed, upward primary air flow 21 passes already above the floor 3 in a flow arc, so that the primary air flow 21 passes into a horizontal flow 22, then a light downwardly inclined flow 23 forms and finally passes after passing a slightly opposite curved arc 24 in a horizontal flow 25 '.
  • This primary air flow 21 forms a source ventilation 31 as source air 34, that is, the primary air 11 flows at a relatively low speed in the direction of the center of the room, while it sweeps along the floor 3 of the room 1.
  • secondary air 25 By means of the secondary air conveyor 16 secondary air 25, namely room air 26, is drawn from the room 1, which enters the located between the Primär Kunststoffauslass 13 and Sekundär Kunststoffauslass 19 secondary air inlet 14, the secondary air heat exchanger 15 passes through and then vertically upwards or approximately vertically upwards from the secondary air outlet 19 is ejected with strong impulse.
  • This preferably takes place in such a way that the secondary air 25, which may have been heat-treated by means of the secondary air heat exchanger 15, ie cooled or heated, ascends along an area 27 of the facade 2 and then makes a change of direction in the direction of the center of the room 1. That is, the secondary air stream 28 describes a similar, but much more sweeping arc with respect to the primary air 11.
  • the secondary air 25 transitions into an approximately horizontal flow 29 having a vertical distance to the primary air outlet 13, that primary air 11 and secondary air 25 have little or no contact.
  • the arcuate secondary air stream 28 lowers with slightly downward flow 30 and then also goes into a slight curve 31 ', which is opposite to the previous air guide path opposite curved and then lies down - especially laterally spaced to the primary air outlet 13 - approximately in parallel flow to the source air 34 from above to the primary air 11.
  • the secondary air 25 - also like the primary air 11 - a horizontal flow 32, 32 ', so due to the two superimposed layers of primary air 11th and secondary air 25, an air layer 33 'is formed, which moves slowly towards the center of the room 1.
  • the secondary air 25 forms after leaving the secondary air outlet 19, a mixed source air 33, so that this air causes a mixed source ventilation 35.
  • the induction takes place only in a subsequent to the Sekundär Kunststoffauslass 19 section of the secondary air flow of the secondary air stream 28 and is no longer present when the secondary air 25 overlaps the primary air 11.
  • the primary air device 8 may have a control and storage flap for the primary air 11. As a result, the amount of fresh air supplied, in particular outside air 11 ', can be adjusted in terms of its volume flow.
  • FIG. 2 shows a further embodiment, which is substantially the embodiment of the FIG. 1 so that only the differences are discussed below.
  • the differences are that the two heat exchangers, namely the primary air heat exchanger 12 and the secondary air heat exchanger 15 are not arranged upright standing in the ventilation device 5, but lying, next to each other and preferably directly adjacent to the Bodenauslassgitter 20th
  • the embodiments of the Figures 1 and 2 each show a ventilation device 5, which is designed as a central ventilation device 5, because the primary air 11 is supplied from a central device via an air duct or the like.
  • the embodiments of the Figures 1 and 2 have decentralized ventilation devices 5.
  • This training is given when no air center is present, which supplies the primary air by means of an air line, but when the ventilation device 5 each makes a primary air supply itself.
  • the primary air device 8 has a primary air conveyor, in particular a primary air fan, preferably a radial primary air fan, with the primary air 11, namely outside air 11 ', sucked from the facade 2 ago and the primary air heat exchanger 12 is supplied. Otherwise, these two, not shown embodiments correspond to the embodiments of Figures 1 and 2 so that reference is made to them.
  • FIGS. 3 and 4 show two further embodiments of the invention, for which all the above explanations apply mutatis mutandis, so reference is made to the above description.
  • Different from the embodiments of the Figures 1 and 2 is at the FIGS. 3 and 4 merely that there is another arrangement of primary air outlet 13, secondary air inlet 14 and secondary air outlet 19.
  • the design is such that primary air outlet 13 and secondary air outlet 19 are arranged closely adjacent to one another, in particular laterally adjacent to one another.
  • the secondary air inlet 14 is at a distance from the primary air outlet 13 and the secondary air outlet 19 and is preferably located near the facade 2.
  • FIG. 1 are in the embodiment of FIG.
  • Secondary air 25 drawn from the space 1 from the secondary air conveyor 16 enters the secondary air inlet 14, then passes through the secondary air heat exchanger 15 and is discharged from the secondary air outlet 19 immediately adjacent to the primary air outlet 13.
  • primary air heat exchanger 12 and secondary air heat exchanger 15 are not adjacent to each other, but have between them a lateral distance, where they are both installed horizontally.
  • primary air outlet 13 is arranged directly laterally adjacent to the secondary air outlet 19.

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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)

Claims (18)

  1. Procédé d'aération, de chauffage et/ou de refroidissement d'une pièce (1), dans lequel de l'air primaire (11) traité en température ou non traité en température sort verticalement vers le haut ou de biais vers le haut par une faible impulsion au niveau du sol de la pièce (1) en tant qu'air source (34), et passe au-dessus du sol (3) essentiellement avec un écoulement horizontal, et dans le voisinage, de l'air secondaire (25) traité en température ou non traité en température est expulsé verticalement vers le haut ou de biais vers le haut par une forte impulsion au niveau du sol de la pièce (1), dans lequel l'impulsion avec laquelle l'air secondaire (25) entre dans la pièce (1) est sélectionnée avec une grandeur telle que de l'air ambiant (26) est induit dans l'écoulement d'air secondaire (28), de sorte que l'écoulement ainsi formé d'air source mélangé présente tant de l'air secondaire (25) que de l'air ambiant (26) induit, et, par dégradation de l'impulsion de l'air source mélangé (33), celui-ci se pose ou se déplace essentiellement dans un écoulement horizontal au-dessus de l'air source (34), de manière à former des couches d'air (33').
  2. Procédé selon la revendication 1, caractérisé en ce que de l'air extérieur (11') est employé en tant qu'air primaire (11).
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce que de l'air ambiant (26) est employé en tant qu'air secondaire (25).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'air source (34) et l'air source mélangé (33) entrent dans la pièce (1) au niveau du sol à proximité d'une façade (2) de la pièce (1).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'air primaire (11) est fourni par un équipement central, en particulier une centrale de climatisation.
  6. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'air primaire (11) est fourni par un équipement de transport d'air décentralisé.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'air secondaire (25) est transporté par un dispositif de transport d'air décentralisé (16).
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que le traitement en température de l'air primaire (11) est exécuté au moyen d'un échangeur de chaleur d'air primaire (12).
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que le traitement en température de l'air secondaire (25) est exécuté au moyen d'un échangeur de chaleur d'air secondaire (15).
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'échangeur de chaleur d'air primaire (12) et l'échangeur de chaleur d'air secondaire (15) sont conçus et employés en tant qu'échangeur de chaleur commun.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'air source mélangé (33) s'écoule de manière ascendante le long d'une partie de la façade (2) de la pièce (1).
  12. Procédé selon la revendication 11, caractérisé en ce que la sortie de l'air secondaire (25) est plus proche de la façade (2) que la sortie de l'air primaire (11).
  13. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'écoulement de l'air source mélangé (33) au-dessus de la sortie de l'air source (34) présente un écart vertical par rapport à l'écoulement local de l'air source (34).
  14. Dispositif d'aération, de chauffage et/ou de refroidissement d'une pièce (1), pour exécuter le procédé selon l'une ou plusieurs des revendications précédentes, comprenant un équipement d'air primaire (8) et un équipement d'air secondaire (9) qui présente un échangeur de chaleur d'air secondaire (15) pour un traitement thermique éventuel d'air secondaire (25), dans lequel le dispositif (5) est conçu en tant qu'appareil au sol (7) et l'équipement d'air primaire (8) est doté d'une évacuation d'air primaire (13), de sorte que l'air primaire (11) entre dans la pièce (1) dirigé vers le haut ou de biais vers le haut par une faible impulsion en tant qu'air source (34) et passe au-dessus du sol (3) de la pièce (1) essentiellement avec un écoulement horizontal, et dans lequel l'équipement d'air secondaire (9) est doté d'une évacuation d'air secondaire (19), de sorte que l'air secondaire (25) entre dans la pièce (1) dirigé vers le haut ou de biais vers le haut par une forte impulsion, puis induit de l'air ambiant (26) et, par dégradation de l'impulsion de l'air source mélangé (33), l'écoulement ainsi formé d'air source mélangé (33) se pose ou se déplace essentiellement dans un écoulement horizontal au-dessus de l'air source (34), de manière à former des couches d'air (33').
  15. Dispositif selon la revendication 14, caractérisé par la formation en tant que dispositif central (5) qui présente un raccordement d'air primaire (10).
  16. Dispositif selon l'une des revendications 14 ou 15, caractérisé par la formation en tant que dispositif décentralisé (5), qui présente un équipement de transport d'air primaire, en particulier un ventilateur d'air primaire, et un échangeur de chaleur d'air primaire.
  17. Dispositif selon l'une des revendications 14 à 16, caractérisé en ce que les sorties d'air primaire et d'air secondaire reposent à distance l'une de l'autre, en particulier l'une à côté de l'autre ou directement dans le voisinage l'une de l'autre.
  18. Dispositif selon l'une des revendications 14 à 17, caractérisé par un équipement de transport d'air secondaire (16), en particulier un ventilateur d'air secondaire (17).
EP08001103.4A 2007-02-16 2008-01-22 Dispositif au sol et procédé destinés à l'aération, au chauffage et/ou au refroidissement d'une pièce Active EP1959206B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007007711.6A DE102007007711B4 (de) 2007-02-16 2007-02-16 Verfahren und Vorrichtung zum Lüften, Heizen und/oder Kühlen eines Raumes

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EP1959206A1 EP1959206A1 (fr) 2008-08-20
EP1959206B1 true EP1959206B1 (fr) 2017-12-20

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EP08001103.4A Active EP1959206B1 (fr) 2007-02-16 2008-01-22 Dispositif au sol et procédé destinés à l'aération, au chauffage et/ou au refroidissement d'une pièce

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Publication number Priority date Publication date Assignee Title
JP5847780B2 (ja) * 2013-09-13 2016-01-27 株式会社 テスク資材販売 空調システム
CN104729064A (zh) * 2013-12-19 2015-06-24 国家电网公司 固定装置

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DE9106753U1 (de) * 1991-04-30 1991-08-29 Heinrich Kampmann KG, 4450 Lingen Vorrichtung zur Klimatisierung von Räumen
JP3243622B2 (ja) * 1992-11-26 2002-01-07 株式会社日立製作所 空調システム
DE4442918C2 (de) * 1994-12-01 1998-07-02 Krantz Tkt Gmbh Sockelquellauslaß
DE19504068C1 (de) * 1995-02-08 1996-03-21 Georg Dipl Ing Mayer System zum Heizen, Lüften und/oder Kühlen eines Raumes und damit durchzuführendes Verfahren
DE10010119A1 (de) * 2000-03-03 2001-09-13 Krantz Tkt Gmbh Verfahren und Vorrichtung zur Belüftung und Temperierung eines Raumes
DE10105302A1 (de) * 2001-02-02 2002-08-14 Ltg Ag Raumlufttechnische Einrichtung
DE10122488A1 (de) * 2001-05-09 2002-12-05 Fassadensystemlueftung Gmbh & Lüftungssystem für die Räume von Gebäuden
DE20113001U1 (de) * 2001-08-04 2001-10-04 LTG Aktiengesellschaft, 70435 Stuttgart Lufttechnische Einrichtung im Unterflurbereich eines Raumes
DE10253264C5 (de) * 2002-01-17 2008-04-17 Ltg Aktiengesellschaft Dezentrale lufttechnische Einrichtung sowie Verfahren zum dezentralen Heizen oder Kühlen eines Raumes
DE102004010738A1 (de) * 2004-03-05 2005-09-22 Ltg Aktiengesellschaft Raumlufttechnische Einrichtung zum Heizen, Kühlen und/oder Belüften eines Raumes sowie entsprechendes Verfahren

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DE102007007711A1 (de) 2008-08-21
EP1959206A1 (fr) 2008-08-20
DE102007007711B4 (de) 2014-03-27

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