WO2014111452A1 - Sortie d'air pour le conditionnement de l'air ambiant dans une pièce, et procédé afférent - Google Patents

Sortie d'air pour le conditionnement de l'air ambiant dans une pièce, et procédé afférent Download PDF

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Publication number
WO2014111452A1
WO2014111452A1 PCT/EP2014/050771 EP2014050771W WO2014111452A1 WO 2014111452 A1 WO2014111452 A1 WO 2014111452A1 EP 2014050771 W EP2014050771 W EP 2014050771W WO 2014111452 A1 WO2014111452 A1 WO 2014111452A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
air
air outlet
pcm
secondary air
Prior art date
Application number
PCT/EP2014/050771
Other languages
German (de)
English (en)
Inventor
Detlef Makulla
Rainer Laudenberg
Original Assignee
Caverion Deutschland GmbH
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 Caverion Deutschland GmbH filed Critical Caverion Deutschland GmbH
Publication of WO2014111452A1 publication Critical patent/WO2014111452A1/fr

Links

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
    • F24F5/0007—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 cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017—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 cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • F24F5/0021—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 cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice using phase change material [PCM] for storage
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/26—Arrangements for air-circulation by means of induction, e.g. by fluid coupling or thermal effect
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the invention relates to an air outlet, in particular in the form of a
  • Ceiling induction outlet for conditioning room air of a room within a building, comprising
  • At least one connecting piece for connecting at least one
  • At least one air inlet opening for the entry of secondary air from the room into the air outlet
  • the PCM heat exchanger for controlling the temperature of the secondary air
  • the PCM heat exchanger comprising at least one heat exchanger element comprising a phase change material
  • At least one mixing chamber for mixing the primary air with the tempered secondary air to mixed air
  • Air outlet opening through which the mixed air flows into the room.
  • the present invention relates to a method for conditioning room air of a room within a building by means of an air outlet, comprising the following method steps:
  • Secondary air originating from the room is introduced into the air outlet through an air inlet opening, wherein the secondary air is tempered by means of at least one PCM heat exchanger, the PCM heat exchanger comprising at least one heat exchanger element having a phase change material.
  • Ceiling space is connected to the room to be ventilated, which is located below the suspended ceiling, by means of openings, so that an exchange of air between the ceiling space and the room to be ventilated can take place.
  • Ceiling gap the power of which results from a material that changes its state of aggregation as a function of the temperature, wherein a melting temperature of the material used is typically in the range between 18 ° C and 30 ° C, depending on the particular application.
  • a melting temperature of the material used is typically in the range between 18 ° C and 30 ° C, depending on the particular application.
  • phase change material or “phase change material” (PCM for short).
  • the warm secondary air coming from the room is passed in the ceiling space to heat exchanger elements of a PCM heat exchanger, which include a phase change material. This absorbs energy from the secondary air, which cools the secondary air. This process ends at the latest when the PCM has liquefied and finally the same
  • the present invention is based on the object to further develop an air outlet of the type described above in such a way that its cooling performance is improved.
  • the underlying object is achieved, starting from an air outlet of the type described above according to the invention by at least one further heat exchanger for controlling the temperature of the secondary air, wherein the further heat exchanger and the PCM heat exchanger are connected in series, so that the secondary air in the
  • the "further heat exchanger” can be, for example, an air / air or air / water heat exchanger whose heat exchange capacity is ensured by the continuous supply of energy
  • Heat exchanger with a heat transfer medium for example, cooled water
  • a heating register is conceivable for heating the secondary air, which is operated by means of a connection to a power supply with electrical energy.
  • the PCM heat exchanger comprises a kind of a
  • connection of the at least one heat exchanger element can be achieved with a pipe, which leads a heat transfer medium.
  • a pipe which leads a heat transfer medium.
  • the latter can be "recharged.” This applies equally to scheduled heating of the PCM (heating case) as well as cooling of the PCM (cooling case).
  • Air outlet can be covered at short notice by means of the further heat exchanger.
  • PCM heat exchangers are very suitable for covering a basic requirement for heating or cooling the secondary air.
  • it may also be regenerable without the use of external energy, for example by means of night cooling by means of outside air.
  • the PCM heat exchanger comprises a plurality of individual heat exchanger elements, which are arranged perpendicular to a flow direction of the secondary air viewed at a distance from each other, wherein between the individual heat exchanger elements each a flow-through space is arranged. This means that the individual heat exchanger elements of the PCM heat exchanger are effectively connected in parallel with each other. In this way, the performance of the PCM heat exchanger can be increased.
  • Heat exchanger element is plate-shaped and oriented substantially horizontally.
  • the plate shape causes a favorable ratio of a volume of the respective
  • Heat exchanger element to the surface, so that an energy exchange between the secondary air and the heat exchanger element can take place particularly well.
  • Heat exchanger element located PCMs would be shielded by the outer jacket. Also particularly advantageous is such an air outlet, in which the PCM heat exchanger viewed in the flow direction of the secondary air before the at least one other
  • Heat exchanger is arranged. This order always allows a maximum
  • At least one heat exchanger element, preferably all heat exchanger elements, of the PCM heat exchanger is connected to at least one heat transfer medium leading pipe in heat transferring manner, wherein the phase change material by means of an energy transfer between selbigem and the heat transfer medium is regenerated.
  • heat transferring may mean, for example, a direct contact of the PCM heat exchanger with the pipeline
  • a heat transfer connection of the pipelines to the PCM heat exchanger is particularly effective, in view of the fact that regeneration of the PCM in The summer months usually only a few cool hours at night can be used.
  • the at least one pipeline is preferably connected to an outer shell of the at least one by means of a heat conduction profile preferably formed by aluminum
  • Heat exchanger element connected. In this way, the exchange of energy between the heat exchanger element and the heat transfer medium can take place particularly efficiently.
  • the at least one pipe is connected to the at least one further heat exchanger, so that the at least one further heat exchanger with the
  • Heat transfer medium is supplied.
  • the heat transfer medium by means of which the further heat exchanger is operated, directly further to the regeneration used by the PCM of the PCM heat exchanger. Accordingly, if the further heat exchanger is operated, a regeneration of the PCM heat exchanger takes place continuously at the same time in this embodiment.
  • the further heat exchanger can be designed as an air / water heat exchanger, wherein the guided in the pipeline
  • Heat transfer medium is formed by water.
  • This method is particularly easy to carry out by means of the air outlet described above.
  • Particularly advantageous is an arrangement of the PCM heat exchanger in the flow direction of the secondary air considered before the other heat exchanger, as already explained above.
  • Fig. 1 A first inventive air outlet in a vertical
  • FIG. 2 Another air outlet according to the invention in a vertical
  • Fig. 3 A detail of a PCM heat exchanger in a vertical longitudinal section
  • FIG. 4 Another air outlet according to the invention in a vertical
  • a first exemplary embodiment which is shown in FIG. 1, shows an air outlet 1, which is connected to a primary air duct 2 by means of a connecting piece not shown in the figures.
  • the air outlet 1 is arranged on an upper side of a suspended ceiling 11.
  • He has a PCM heat exchanger 3, which has three superposed heat exchanger elements 4, which are each designed plate-shaped.
  • the heat exchanger elements 4 are each formed by an enveloping body which is filled with a phase change material ("PCM")
  • PCM phase change material
  • the PCM is here formed by a salt hydrate which has a melting temperature of 22 ° C.
  • PCM heat exchanger 3 is arranged in a secondary air space 5, which is connected by means of an opening, not shown in the figures, to a space 6 to be ventilated, which is located below the suspended ceiling 11.
  • the mixing chamber 7 has an opening laterally connecting the same with the secondary air space 5.
  • the primary air flow is passed from the nozzles 9 at this opening to the secondary air space 5, wherein due to the speed of the primary air flow in the secondary air space 5 located secondary air "entrained” or “induced” is.
  • This negative pressure in the secondary air space 5 continuously causes a "suction", which acts on the room air in the space 6, wherein the room air accordingly flows continuously into the secondary air space 5. In this way, a permanent air envelope takes place in the space 6, which ultimately by the induction effect of the primary air is conditional.
  • the primary air and the induced secondary air mix in the mixing chamber 7 to mixed air. This finally enters through an air outlet opening 15, starting from the mixing chamber 7 into the space 6.
  • a guide 16 is arranged in the air outlet opening 15.
  • Guide 16 is oriented obliquely in the illustrated cooling case.
  • a horizontal orientation may be useful.
  • the guide 16 is typically vertically aligned.
  • a further heat exchanger 10 is arranged behind the PCM heat exchanger 3, here as
  • Air / water heat exchanger is executed.
  • the further heat exchanger 10 is necessarily traversed by the secondary air.
  • the further heat exchanger 10 it is possible, the already pretreated by means of the PCM heat exchanger 3 secondary air
  • the secondary air space 5 is a separate from the other heat exchanger 10 and upstream air space through which the entire induced room air is passed in a first step before it passes in a second step - again in its entirety - in the downstream further heat exchanger 10 , Due to the inventive arrangement of the further heat exchanger 10 in the flow direction of the secondary air behind the secondary air chamber 5, wherein the secondary air chamber 5 and the further heat exchanger 10 form two separated areas over a defined
  • the PCM heat exchanger 3 Due to the downstream of the further heat exchanger 10, the PCM heat exchanger 3 with its heat exchanger elements 4 in the longitudinal direction thereof at a distance from the air outlet opening 5, which corresponds to the width of the further heat exchanger 10 shown in Figure 1 plus a few centimeters.
  • the further heat exchanger 10 is located between the PCM heat exchanger 3 and the
  • the absorbed heat energy is stored in the PCM from this point on, the stored energy going beyond the pure temperature difference between the PCM and the secondary air.
  • the stored energy is sometimes referred to as "latent heat.”
  • the use of the further heat exchanger 10 is particularly advantageous because it is continuously supplied with energy (here in the form of supplied cooling water) and can permanently contribute to the cooling of the secondary air.
  • each heat exchanger element 4 On a top 12 of each heat exchanger element 4 a plurality of pipes 13 is laid. These are, as is particularly good from that in Figure 1
  • the sauce 14 are formed of aluminum. They have a particularly high thermal conductivity.
  • the pipes 13 are adapted to lead a heat transfer medium.
  • the pipes 13 are formed by water pipes, can be passed through the cooling water.
  • the cooling water serves to the PCM in the
  • Carrying heat transfer medium and the PCM cool or only at certain intervals, for example, only at night. In the event that a continuous operation of those fed with cooling water
  • FIG. 2 shows a second air outlet V according to the invention. This differs from the air outlet 1 described above by an additional possibility in its operation.
  • the mode of operation shown which is indicated by flow arrows 20, 21, serves the regeneration of the PCM heat exchanger 3, in which case the
  • Regeneration is achieved by means of air cooling, while in the air outlet 1 according to Figure 1, a water cooling of the PCM is used.
  • a primary air space 8' is designed differently than the primary air space 8 at the air outlet 1.
  • the primary air space 8 ' is along an upper side of the heat exchanger 10 beyond the latter to one the secondary air space 5
  • Openings may enter the primary air, starting from the primary air space 8 'in a gap 17 between the heat exchanger 10 and the secondary air space 5.
  • a transfer of the primary air from the primary air chamber 8 'in the mixing chamber 7 is by means not shown
  • Gap 17 acts in the manner shown in Figure 2 to some extent as
  • the room air is "sucked" from the space 6 through the air outlet opening 15 of the mixing chamber 7 in the air outlet V, wherein the suction effect this by the flow of the primary air on the secondary air space 5 facing side
  • the mixing chamber 7 functions as a secondary air space.
  • the secondary air and the primary air are mixed to form mixed air.
  • the intermediate space 17 is separated from the secondary air space 5 by means of a boundary wall 18, wherein the boundary wall 18 has openings which allow a transfer of the mixed air from the intermediate space 17 into the secondary air space 5.
  • Openings are equipped with nozzles 9 and in the height of individual, between the
  • Heat exchanger elements 4 of the PCM heat exchanger 3 arranged free spaces 19 arranged. In this way, the mixed air is directed into the free spaces 19 between the heat exchanger elements 4.
  • the secondary air flows from the mixing chamber 7 through the further heat exchanger 10 before it enters the intermediate space 17.
  • the secondary air is cooled and thus contributes to a cooling of the mixed air. This is therefore suitable for receiving and removing the (latent) heat energy stored in the PCM of the heat exchanger elements 4.
  • the PCM is therefore cooled and thus regenerated.
  • FIG. 3 shows an embodiment in which the Regeneration of the PCMs of the PCM heat exchanger 3 is achieved by means of a heat transfer medium, the in
  • Pipes 13 ' is guided. In Figure 3, these pipes 13 'can be seen only in cross section.
  • the PCM heat exchanger 3 has four heat exchanger elements 4 ', which are laterally flowed by secondary air.
  • the heat exchanger elements 4 ' are rounded at one of the secondary air flow end 22 and provide the
  • a PCM is arranged in an interior 23 of the heat exchanger elements 4 '.
  • the pipes 13 ' are arranged at one of the secondary air flow end facing away from the end 22, wherein the pipes 13' through the interior 23 of the
  • Heat exchanger elements 4 ' are laid. An outer wall 25 of the pipes 13 'is therefore directly with the in the interior 23 of the heat exchanger elements 4'
  • a lowermost heat exchanger element 26 is disposed at a distance from the suspended ceiling 11, so that between the suspended ceiling 11 and the lowermost heat exchanger element 26 can be flowed through by the secondary air Free space is available.
  • the air outlet 1 is a bottom heat exchanger element 26 ' the PCM heat exchanger 3 shown there, however, in direct contact with the suspended ceiling 11 shown there. In this way, the suspended ceiling 11 itself can be used as a "cooling sail", as this by the PCM of the
  • Heat exchanger element 26 ' is cooled. Furthermore, it is shown in the embodiment according to FIG. 4 that a shell ceiling 27 belonging to the space 6 can equally be used in its function as a heat storage mass for cooling the secondary air. In that regard, the functionality of the concrete mass of the shell 27 is identical to that of the heat exchanger elements 4 of the PCM heat exchanger.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Central Air Conditioning (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

La présente invention concerne une sortie d'air (1), en particulier sous la forme d'une sortie d'air à induction de plafond, pour le conditionnement de l'air ambiant dans une pièce (6) à l'intérieur d'un bâtiment, la sortie d'air présentant : - au moins un embout de raccordement servant à raccorder au moins un conduit d'air primaire (2) à la sortie d'air (1), l'air primaire entrant dans la sortie d'air (1) en passant par le conduit d'air primaire (2) ; - au moins une ouverture d'entrée d'air par laquelle l'air secondaire provenant de la pièce (6) entre dans la sortie d'air (1) ; - au moins un échangeur de chaleur PCM (3) servant à la régulation thermique de l'air secondaire, l'échangeur de chaleur PCM (3) comprenant au moins un élément (4) d'échangeur de chaleur présentant un matériau à changement de forme ; - au moins une chambre de mélange (7) dans laquelle l'air primaire est mélangé à l'air secondaire thermorégulé pour produire un air mélangé ; - et au moins une ouverture de sortie d'air (15) agencée dans une surface de délimitation de la chambre de mélange (7) et par laquelle l'air mélangé afflue dans la pièce (6). L'invention vise à perfectionner une sortie d'air du type mentionné ci-dessus de manière à ce que sa production de froid soit améliorée. A cet effet, la sortie d'air comprend au moins un autre échangeur de chaleur (10) servant à la régulation thermique de l'air secondaire, et ledit autre échangeur de chaleur (10) et l'échangeur de chaleur PCM (3) sont montés en série, de sorte que l'air secondaire peut être thermorégulé, vu dans le sens de son écoulement, tout d'abord par l'échangeur de chaleur PCM (3), puis par le ou les autres échangeurs de chaleur (10) ou inversement. La présente invention concerne par ailleurs un procédé de conditionnement de l'air ambiant dans une pièce (6) à l'intérieur d'un bâtiment au moyen d'une sortie d'air (1).
PCT/EP2014/050771 2013-01-16 2014-01-16 Sortie d'air pour le conditionnement de l'air ambiant dans une pièce, et procédé afférent WO2014111452A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013200587.3A DE102013200587A1 (de) 2013-01-16 2013-01-16 Luftauslass zur Konditionierung von Raumluft eines Raumes sowie zugehöriges Verfahren
DE102013200587.3 2013-01-16

Publications (1)

Publication Number Publication Date
WO2014111452A1 true WO2014111452A1 (fr) 2014-07-24

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PCT/EP2014/050771 WO2014111452A1 (fr) 2013-01-16 2014-01-16 Sortie d'air pour le conditionnement de l'air ambiant dans une pièce, et procédé afférent

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DE (1) DE102013200587A1 (fr)
WO (1) WO2014111452A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017124401A1 (de) * 2017-10-19 2019-04-25 Thomas Friedrich Verfahren und Vorrichtung zur Klimatisierung von Räumen über thermisch aktivierte Betonelemente

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006029597A1 (de) 2005-06-28 2007-01-25 Harry Schmitz Klimadecke
EP2354687A1 (fr) * 2010-02-03 2011-08-10 TROX GmbH Ouverture de plafond pour installations climatiques
US20110198053A1 (en) * 2002-06-03 2011-08-18 Klaus Fieback Method for heating and cooling a room and a building with a plurality of rooms

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004001866U1 (de) * 2004-02-06 2005-06-23 Rubitherm Gmbh Abgehängte Decke mit Latentwärmespeicherelementen
DE202010016878U1 (de) * 2010-12-21 2012-03-22 Gib Gesellschaft Für Innovative Bautechnologie Mbh Aufbau eines Wärme leitenden Flächenelementes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110198053A1 (en) * 2002-06-03 2011-08-18 Klaus Fieback Method for heating and cooling a room and a building with a plurality of rooms
DE102006029597A1 (de) 2005-06-28 2007-01-25 Harry Schmitz Klimadecke
EP2354687A1 (fr) * 2010-02-03 2011-08-10 TROX GmbH Ouverture de plafond pour installations climatiques

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Publication number Publication date
DE102013200587A1 (de) 2014-07-17

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