EP1710516A1 - Device and method for humidifying an airflow - Google Patents

Device and method for humidifying an airflow Download PDF

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Publication number
EP1710516A1
EP1710516A1 EP05090076A EP05090076A EP1710516A1 EP 1710516 A1 EP1710516 A1 EP 1710516A1 EP 05090076 A EP05090076 A EP 05090076A EP 05090076 A EP05090076 A EP 05090076A EP 1710516 A1 EP1710516 A1 EP 1710516A1
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EP
European Patent Office
Prior art keywords
humidifying
air
water
heating
humidification
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.)
Granted
Application number
EP05090076A
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German (de)
French (fr)
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EP1710516B1 (en
Inventor
Martin Dr.-Ing. Möritz
Hans Dr.-Ing. Peters
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Individual
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Individual
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Priority to AT05090076T priority Critical patent/ATE412148T1/en
Application filed by Individual filed Critical Individual
Priority to DE502005005748T priority patent/DE502005005748D1/en
Priority to DK05090076T priority patent/DK1710516T3/en
Priority to PL05090076T priority patent/PL1710516T3/en
Priority to ES05090076T priority patent/ES2319786T3/en
Priority to EP05090076A priority patent/EP1710516B1/en
Priority to JP2008503443A priority patent/JP2008545113A/en
Priority to CA002603336A priority patent/CA2603336A1/en
Priority to PCT/EP2006/003029 priority patent/WO2006103108A1/en
Priority to US11/910,363 priority patent/US20080157411A1/en
Publication of EP1710516A1 publication Critical patent/EP1710516A1/en
Priority to NO20074812A priority patent/NO328977B1/en
Application granted granted Critical
Publication of EP1710516B1 publication Critical patent/EP1710516B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/08—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using heated wet elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/04—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements
    • F24F2006/046—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements with a water pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F24F6/14—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles
    • F24F2006/146—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles using pressurised water for spraying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification

Definitions

  • the invention relates to a device for increasing the relative humidity of an air flow with humidifying means, which are arranged in the air flow and adapted to deliver moistening water to the air flow.
  • the invention further relates to a method for humidifying an air flow in which dampening water is introduced into the air stream.
  • Such a device and such a method are known from DE 2 260 225 already known.
  • the device disclosed therein is provided for humidifying the air in an air-conveying room ventilation system whose humidifying is designed as moistening water dispensing tube extending in an air heater.
  • the dampening water exits through holes provided in the pipe and drips into the heat ventilating unit.
  • the outside air In order to meet the comfort requirements of the people, it is also necessary in the ventilation of interiors, the outside air to heat more or less depending on their temperature. The colder the outside air is compared to the desired room air temperature, the more the air has to be heated.
  • the DE 37 28 730 describes a non-air flow device for air heating and humidification, which consists of two combinkapillaren, heat storage and plate-like components, one of which is traversed by metallic heating tubes, which are traversed by a liquid heating medium. In the second component holes are introduced, which are filled with water, which evaporate over the plate surface and thus moisten the room air.
  • the EP 0 092 527 describes a device for humidifying the air in circulating air heaters, in the air flow direction behind a shell and tube heat exchanger, a water storage unit is arranged, which are equipped with passages through which the previously heated air can flow.
  • the inner surfaces of the water reservoirs are partially equipped with panels of porous material, through which the warm air to flow and absorb water.
  • the US 2,110,268 discloses a device for humidifying the air in optionally provided with outdoor or circulating air and air heating ventilation equipment, seen in the air flow direction behind a shell and tube heat exchanger, a water dispensing unit is arranged, which consists of one or more chambers with walls of a porous material. The chambers are traversed by water, which penetrates through the porous walls and moistens the air flowing past on the other side.
  • the WO 02/095297 describes a device for humidifying the air in ventilation units, consisting of a battery of lamellae arranged side by side, over which a mobile carriage moves back and forth and drips water on the slats, which should evaporate after hitting the slats and thus moisten the room air ,
  • the device described is also arranged in the direction of air flow behind a tube heat exchanger intended for air heating.
  • the prior art air humidification devices and methods suffer from a number of disadvantages.
  • the devices of the prior art seen in the direction of air flow are located immediately behind the air heaters, firstly because the air after heating has a higher moisture absorption capacity and secondly because the heated air is to be deprived of more energy to evaporate the dampening water.
  • the water temperature directly at the interface between the humidifier water and the air to be humidified is too low to achieve a sufficient phase transition of the water from the liquid state to the gaseous state.
  • the flowing air which usually has only a temperature of about 20 - 24 ° C, cools the dampening water at the interface between water and air.
  • the said methods allow a regulation of the humidification performance only by changing the inflow of dampening water.
  • the object of the invention is therefore to provide a device and a method of the type mentioned above, with which it is possible in a cost-effective manner, on the one hand to achieve a significant increase in humidification performance.
  • the invention solves this problem, starting from the device mentioned above in that the humidifying means are connected to a humidifying circuit having a circulating pump for circulating the humidifying water in the humidifying circuit and a humidifying heat exchanger for heating the humidifying water below the boiling point.
  • the invention solves this problem, starting from the method mentioned above in that the humidifying water is circulated in a humidifier water circuit under continuous heating and heated in this way to a temperature between 40 and 95 degrees Celsius.
  • the moistening water is always transported up to the interface between water and air with a large amount of heat and the cooling of the moistening water at the air interface at the conventional devices and processes is avoided.
  • the high temperature of the dampening water at the interface leads to a correspondingly high transition of humidifying water from the liquid to the gaseous phase and, accordingly, to a strong increase in the humidifier performance.
  • the heating and recycling of humidifying water allows a largely independent control of humidification, since the control of preheating the humidifying water has a control of humidification in the wake.
  • the temperature of the heated humidifying water is in the range between 40 and 95 degrees Celsius during operation of the device according to the invention.
  • the humidification circuit has a control unit connected to the circulation pump and the humidification heat exchanger, which is set up to regulate the circulation rate, the pressure and / or the temperature of the humidifying water in the humidifying means.
  • Control units are known as such, so that at this point on their structure need not be discussed in more detail.
  • a conventional control unit has expedient parameter sets on. The parameter sets are compared with measured values which the control unit is provided by suitable measuring sensors.
  • a control routine for example in the form of software programs, performs certain control steps, such as increasing the flow rate of the circulation pump.
  • the humidification circuit has control valves connected to the control unit.
  • the control unit is thus able to adjust the temperature and the pressure of the humidifying water in the humidifying means by accessing the circulation pump and the regulating valves.
  • humidifying means comprise a hollow hydrophilic and / or porous material connected to the humidifying circuit.
  • a material is, for example, a porous tube through which the dampening water is driven under the action of the circulation pump.
  • the dampening water penetrates through the porous wall of the pipe to the outside, where it is transferred into its vapor phase, for example, by a heated air flow.
  • the hollow porous material is in a related development in a heat-conducting contact with a heating element of an air heater register.
  • the humidifying means comprise a perforated or apertured material. From the openings it comes to the outlet of dampening water.
  • the humidification circuit can be connected to a water supply via a water treatment plant.
  • the water treatment plant is used to remove unwanted substances dissolved in dampening water.
  • the moistening agents extend in a air heating device through which air flow can flow with heating elements.
  • the heating elements are for example formed independently of the Befeuchtungs63 hardwareer.
  • a preheating of the humidification without heating the air flow through the heating elements for example, by the supply and return of the heating elements after the humidification heat exchanger, however, are shorted before entering or leaving the air heater.
  • the humidifying heat exchanger is coupled to a flow of Heilmoreregisters.
  • a particularly cost preheating of the humidifying water is possible, since it can be dispensed with a separate power supply for preheating.
  • the preheating of the humidifying water also leads to no impairment of the heat output of Heilmoreregisters because the consumed by the preheating heat energy, for example, a few percent based on the total energy demand for air conditioning (heating and humidification), on the humidification water also to be heated and humidified Air is transmitted.
  • the heating elements are heat conductively connected to a hollow hydrophilic and / or porous material. In this way, the humidification performance is further increased.
  • the humidifying means comprises a humidifying tube extending through an air heating coil and having humidifying ports for delivering the humidifying water. Also in this variant of the invention has been found that the humidification performance can be increased considerably by the preheating of the humidification.
  • the air heater on layers of a evaporation promoting material are, for example, hydrophilic materials which, contrary to the surface tension of the liquid moistening water, bring about a more extensive wetting of the material promoting the evaporation. The more extensive wetting facilitates the evaporation of dampening water.
  • hydrophilic materials in this context materials with a large, for example, grainy outer surface into consideration.
  • the heated dampening water is introduced into a hollow porous and / or hydrophilic material.
  • the hollow porous material extends in a heat exchange register with heating elements.
  • the heating elements heat the hollow porous material.
  • FIG. 1a shows an exemplary embodiment of the device according to the invention.
  • the apparatus comprises a humidification heat exchanger 13, through which a flow 12,15 and a return 16,11 of a Heilmoreregisters not shown in the figure 1a is passed.
  • a heated liquid heating medium is passed and supplied in this way a likewise not shown heating element of the Heilmoreregisters.
  • the liquid heating means of the flow 12,15 is heated for example by so-called district heating. Deviating from this, however, it is also possible that another local heat exchanger is used in the context of the invention to allow heating of the heating element of Heilmoreregisters.
  • the Befeuchtungstage monitorer 13 is part of a humidifying 5, which further has a circulating pump 7 and control valves 6 and 7.
  • the humidifying circuit 5 is connected via a Befeuchtungszulauf 17 and a humidification 18 with a humidifier, also not shown in Figure 1a, with which the relative humidity of the air humidifier passing through the air stream can be increased.
  • a humidifier also not shown in Figure 1a, with which the relative humidity of the air humidifier passing through the air stream can be increased.
  • the humidification circuit 5 is connected via a water treatment plant 3 to a conventional water supply 1, such as a city water pipe. To regulate the water supply in turn serves a control valve. 4
  • control valves 4, 6 and 10 and the circulation pump 7 are connected to a control unit, not shown in Figure 1a, which is set for adjusting the flow through the control valves 4, 6 and 10 and for adjusting the pump power of the circulation pump 7.
  • the control unit is further connected to temperature and pressure sensors, not shown in Figure 1a. In this way, a regulation of the pressure, the temperature and the flow rate of the humidifying water in the humidifying means 5 is made possible. The regulation takes place as a function of predetermined setting parameters and with the aid of a logic implemented in the control unit.
  • Figure 1b shows a further embodiment of the device according to the invention, wherein in contrast to the embodiment shown in Figure 1a, only the flow 12,15 of shipsstras is guided by the Befeuchtungstagerizationer 13.
  • FIG. 2 shows a device according to FIG. 1a with a schematically shown air heating coil 9.
  • the air heating coil 9 is arranged in a channel-shaped housing 14 of a ventilation system, wherein the housing 14 is penetrated by an air flow 13 in the arrow direction shown.
  • the air heating coil 9 is followed by a humidifier 8, which communicates via the inlet 17 or via the outlet 18 with the humidifying circuit 5.
  • a humidifier 8 which communicates via the inlet 17 or via the outlet 18 with the humidifying circuit 5.
  • the humidifier 8 for example, a conventional nozzle tube, wherein the dampening water exiting the nozzle and entrained by the air flow 13 and is heated.
  • FIG. 3 shows a further exemplary embodiment of the device according to FIG. 2, wherein, however, air heating registers and humidifiers are combined to form a schematically indicated common combination register 21.
  • FIG. 4 shows the exemplary embodiment according to FIG. 3 with a combination register 24 shown in more detail.
  • the combination register 24 shown there has planar heat exchanger fins 28 aligned parallel to one another and traversed in a transverse direction by tubular heating elements 26.
  • the heating elements 26 are in heat-conducting contact with the heat exchanger fins 28 and are supplied via the inlet 15 with heated liquid heating medium flowing through the tubular heating elements 26.
  • the heating elements 26 heat the heat exchanger lamellae 28 and thus heat the air stream 13 flowing past the heat exchanger lamellae 28.
  • tubular air humidifying means 25 are connected via the inlet 17 and the outlet 18 to the humidifying 5 and consist of a porous material.
  • the tubular porous material partially circulating humidifying water penetrates depending on the pressure set by the control unit, not shown, the wall of the porous material and is transferred by the simultaneous heating without droplet formation in its gas phase.
  • a water drainage trough 22 is arranged below the combination register 24 and has a water outlet nozzle 23 for discharging the water.

Abstract

The device has air humidification units (25) arranged in an air flow to deliver humidification water to the air flow. The units are connected with a humidification cycle (5) including a circulating pump (7) to circulate the water in the cycle and a humidification heat exchanger (13) to heat the water below the boiling point. The humidification units have hollow porous material, which is attached on the cycle. An independent claim is also included for a method for humidifying an air flow.

Description

Die Erfindung betrifft eine Vorrichtung zur Erhöhung der relativen Luftfeuchtigkeit eines Luftstromes mit Luftbefeuchtungsmitteln, die in dem Luftstrom angeordnet und zur Abgabe von Befeuchtungswasser an den Luftstrom eingerichtet sind.The invention relates to a device for increasing the relative humidity of an air flow with humidifying means, which are arranged in the air flow and adapted to deliver moistening water to the air flow.

Die Erfindung betrifft ferner ein Verfahren zum Befeuchten eines Luftstromes, bei dem Befeuchtungswasser in den Luftstrom eingebracht wird.The invention further relates to a method for humidifying an air flow in which dampening water is introduced into the air stream.

Eine solche Vorrichtung und ein solches Verfahren sind aus der DE 2 260 225 bereits bekannt. Die dort offenbarte Vorrichtung ist zur Befeuchtung der Luft in einer Luft fördernden Raumlufttechnischen Anlage vorgesehen, deren Luftbefeuchtungsmittel als Befeuchtungswasser spendendes Rohr ausgeführt ist, das sich in einem Luftheizregister erstreckt. Das Befeuchtungswasser tritt über in dem Rohr vorgesehene Löcher aus und tropft in die Wärme ventilierende Einheit.Such a device and such a method are known from DE 2 260 225 already known. The device disclosed therein is provided for humidifying the air in an air-conveying room ventilation system whose humidifying is designed as moistening water dispensing tube extending in an air heater. The dampening water exits through holes provided in the pipe and drips into the heat ventilating unit.

Um den Behaglichkeitsanforderungen des Menschen gerecht zu werden ist es bei der Belüftung von Innenräumen auch erforderlich, die Außenluft je nach deren Temperatur mehr oder weniger stark zu erwärmen. Je kälter die Außenluft im Vergleich zur gewünschten Raumlufttemperatur ist, desto stärker muss die Luft erwärmt werden.In order to meet the comfort requirements of the people, it is also necessary in the ventilation of interiors, the outside air to heat more or less depending on their temperature. The colder the outside air is compared to the desired room air temperature, the more the air has to be heated.

Mit der Erwärmung der Luft fällt jedoch gleichzeitig deren relative Luftfeuchtigkeit. Unterhalb von etwa 30 % relativer Luftfeuchte ist mit gesundheitlichen Beschwerden der Nutzer in den belüfteten Räumen zu rechnen. Immer dann, wenn die relative Luftfeuchte in den belüfteten Räumen unter diesen für Menschen erforderlichen Wert bzw. unter einen beispielsweise für einen industriellen Produktionsprozess in den belüfteten Räumen erforderlichen Wert fällt, ist es notwendig, die Außen- oder Zuluft zusätzlich zu befeuchten.With the warming of the air, however, their relative humidity drops at the same time. Below about 30% relative humidity, health problems of the users in the ventilated rooms can be expected. Whenever the relative humidity in the ventilated rooms falls below this value required for people or under a value required, for example, for an industrial production process in the ventilated rooms, it is necessary to additionally humidify the outside or supply air.

Die DE 37 28 730 beschreibt eine nicht Luft durchströmte Vorrichtung zur Lufterwärmung und Luftbefeuchtung, welche aus zwei hochkapillaren, wärmespeicherfähigen und plattenartigen Bauteilen besteht, von denen eines mit metallischen Heizrohren durchzogen ist, welche von einem flüssigen Heizmedium durchflossen werden. In das zweite Bauteil sind Bohrungen eingebracht, die mit Wasser befüllt sind, welches über die Plattenoberfläche verdunsten und somit die Raumluft befeuchten soll.The DE 37 28 730 describes a non-air flow device for air heating and humidification, which consists of two hochkapillaren, heat storage and plate-like components, one of which is traversed by metallic heating tubes, which are traversed by a liquid heating medium. In the second component holes are introduced, which are filled with water, which evaporate over the plate surface and thus moisten the room air.

Die EP 0 092 527 beschreibt eine Vorrichtung zur Befeuchtung der Luft in Umluftheizgeräten, in der in Luftströmungsrichtung gesehen hinter einem Rohrbündelwärmeaustauscher eine Wasserspeichereinheit angeordnet ist, welche mit Durchführungen ausgestattet sind, durch welche die zuvor erwärmte Luft strömen kann. Die inneren Oberflächen der Wasserspeicher sind partiell mit Paneelen aus porösem Material ausgestattet, über welche die warme Luft strömen und dabei Wasser aufnehmen soll.The EP 0 092 527 describes a device for humidifying the air in circulating air heaters, in the air flow direction behind a shell and tube heat exchanger, a water storage unit is arranged, which are equipped with passages through which the previously heated air can flow. The inner surfaces of the water reservoirs are partially equipped with panels of porous material, through which the warm air to flow and absorb water.

Die US 2,110,268 offenbart eine Vorrichtung zur Befeuchtung der Luft in wahlweise mit Außen- oder Umluftführung sowie mit Lufterwärmung vorgesehenen Lüftungsgeräten, in der in Luftströmungsrichtung gesehen hinter einem Rohrbündelwärmeaustauscher eine Wasserspendeeinheit angeordnet ist, welche aus einer oder mehreren Kammern mit Wänden aus einem porösen Material besteht. Die Kammern werden mit Wasser durchflossen, welches durch die porösen Wände dringt und die auf der anderen Seite vorbeiströmende Luft befeuchtet.The US 2,110,268 discloses a device for humidifying the air in optionally provided with outdoor or circulating air and air heating ventilation equipment, seen in the air flow direction behind a shell and tube heat exchanger, a water dispensing unit is arranged, which consists of one or more chambers with walls of a porous material. The chambers are traversed by water, which penetrates through the porous walls and moistens the air flowing past on the other side.

Die WO 02/095297 beschreibt eine Vorrichtung zur Befeuchtung der Luft in Lüftungsgeräten, bestehend aus einer Batterie von nebeneinander angeordneten Lamellen, über welchen ein mobiler Schlitten hin und her fährt und Wasser auf die Lamellen tropfen lässt, welches nach dem Auftreffen auf die Lamellen verdunsten und somit die Raumluft befeuchten soll. Die beschriebene Vorrichtung ist ebenfalls in Luftströmungsrichtung gesehen hinter einem zur Lufterwärmung gedachten Rohrbündelwärmeaustauscher angeordnet.The WO 02/095297 describes a device for humidifying the air in ventilation units, consisting of a battery of lamellae arranged side by side, over which a mobile carriage moves back and forth and drips water on the slats, which should evaporate after hitting the slats and thus moisten the room air , The device described is also arranged in the direction of air flow behind a tube heat exchanger intended for air heating.

Ferner sind Dampfbefeuchter bekannt, bei denen das Befeuchtungswasser zur Luftbefeuchtung in einem dampfförmigen Zustand mit Temperaturen oberhalb von 100 Grad Celsius in den zu erwärmenden Luftstrom eingebracht wird.Furthermore, steam humidifiers are known in which the dampening water is introduced for humidification in a vapor state with temperatures above 100 degrees Celsius in the air stream to be heated.

Die vorbekannten Vorrichtungen und Verfahren zur Luftbefeuchtung, weisen eine Reihe von Nachteilen auf. So sind die Vorrichtungen des Standes der Technik in Luftströmungsrichtung gesehen unmittelbar hinter den Lufterwärmern angeordnet, da zum einen die Luft nach der Erwärmung eine höhere Feuchtigkeitsaufnahmekapazität aufweist und da zum anderen der erwärmten Luft mehr Energie zur Verdampfung des Befeuchtungswassers entzogen werden soll. In der Praxis zeigt sich jedoch, dass die Wassertemperatur direkt an der Grenzfläche zwischen dem Befeuchterwasser und der zu befeuchtenden Luft zu niedrig ist, um einen ausreichenden Phasenübergang des Wassers vom flüssigen Zustand in den gasförmigen Zustand zu erreichen. Die strömende Luft, welche in der Regel nur eine Temperatur von etwa 20 - 24°C aufweist, kühlt das Befeuchtungswasser an der Grenzfläche zwischen Wasser und Luft ab. Weiterhin führt der Entzug von Verdampfungswärme zu einer Abkühlung des Befeuchtungswassers an der besagten Grenzfläche. Aufgrund einer dementsprechend geringen Wassertemperatur an der Grenzfläche zwischen der Luft und dem Befeuchtungswasser erfolgt ein nur geringer Phasenübergang von der flüssigen in die gasförmige Phase und infolge dessen wird durch diese Befeuchtungssysteme nur eine geringe Befeuchtungsleistung erreicht. Eine Leistungssteigerung ist nicht möglich.The prior art air humidification devices and methods suffer from a number of disadvantages. Thus, the devices of the prior art seen in the direction of air flow are located immediately behind the air heaters, firstly because the air after heating has a higher moisture absorption capacity and secondly because the heated air is to be deprived of more energy to evaporate the dampening water. In practice, however, it turns out that the water temperature directly at the interface between the humidifier water and the air to be humidified is too low to achieve a sufficient phase transition of the water from the liquid state to the gaseous state. The flowing air, which usually has only a temperature of about 20 - 24 ° C, cools the dampening water at the interface between water and air. Furthermore, the removal of heat of vaporization leads to a cooling of the dampening water at the said interface. Due to a correspondingly low water temperature at the interface between the air and the moistening water, only a small phase transition from the liquid to the gaseous phase takes place and as a result only a small moistening performance is achieved by these moistening systems. An increase in performance is not possible.

Je nach Außenlufttemperatur und -feuchte sind zum Erreichen eines für den Menschen behaglichen bzw. für industrielle Produktionsprozesse erforderlichen Raumklimas unterschiedliche Verhältnisse zwischen Lufterwärmung und Luftbefeuchtung erforderlich. An warmen und gleichzeitig trockenen Tagen kann beispielsweise aufgrund des fehlenden bzw. zu geringen Wärmeenergieeintrages durch den Lufterhitzer bei keinem der genannten Vorrichtungen oder Verfahren eine möglicherweise erforderliche hohe Luftbefeuchtung erfolgen. Bei geringer Lufterwärmung ist auch nur eine geringe Luftbefeuchtung möglich. Die Luftbefeuchtung ist somit von der Lufterwärmung abhängig.Depending on the outside air temperature and humidity different conditions between air heating and humidification are required to achieve a comfortable for the people or for industrial production processes required indoor climate. On warm and dry days, for example, due to the lack of or too low heat energy input through the air heater at any of the devices mentioned or Procedures a possibly required high air humidification done. At low air heating only a small humidification is possible. The humidification is thus dependent on the air heating.

Die genannten Verfahren ermöglichen eine Regulierung der Befeuchtungsleistung lediglich durch die Veränderung des Zuflusses des Befeuchtungswassers.The said methods allow a regulation of the humidification performance only by changing the inflow of dampening water.

Aufgabe der Erfindung ist es daher, eine Vorrichtung und ein Verfahren der eingangs genannten Art bereitzustellen, mit welcher es auf kostengünstige Weise möglich ist, zum einen eine deutliche Steigerung der Befeuchtungsleistung zu erreichen. Zum anderen soll es ermöglicht werden, die Luftbefeuchtung unabhängig von der Lufterwärmung zu betreiben, also auch dann die Luft befeuchten zu können, wenn keine oder nur eine geringe Lufterwärmung erforderlich bzw. möglich ist. Weiterhin soll es durch die erfindungsgemäße Vorrichtung und das Verfahren ermöglicht werden, die Befeuchtungsleistung der entsprechenden Befeuchtungsanlagen gezielt einstellen zu können.The object of the invention is therefore to provide a device and a method of the type mentioned above, with which it is possible in a cost-effective manner, on the one hand to achieve a significant increase in humidification performance. On the other hand, it should be possible to operate the humidification regardless of the air heating, so even then to humidify the air when little or no air heating is required or possible. Furthermore, it is to be made possible by the device and the method according to the invention to be able to set the humidifying performance of the corresponding humidification systems targeted.

Die Erfindung löst diese Aufgabe ausgehend von der eingangs genannten Vorrichtung dadurch, dass die Luftbefeuchtungsmittel mit einem Befeuchtungskreislauf verbunden sind, der über eine Umwälzpumpe zum Umwälzen des Befeuchtungswassers in dem Befeuchtungskreislauf und über einen Befeuchtungswärmeaustauscher zum Erwärmen des Befeuchtungswassers unterhalb des Siedepunktes verfügt.The invention solves this problem, starting from the device mentioned above in that the humidifying means are connected to a humidifying circuit having a circulating pump for circulating the humidifying water in the humidifying circuit and a humidifying heat exchanger for heating the humidifying water below the boiling point.

Die Erfindung löst diese Aufgabe ausgehend von dem eingangs genannten Verfahren dadurch, dass das Befeuchtungswasser in einem Befeuchterwasserkreislauf unter kontinuierlicher Erwärmung umgewälzt und auf diese Weise auf eine Temperatur zwischen 40 und 95 Grad Celsius erwärmt wird.The invention solves this problem, starting from the method mentioned above in that the humidifying water is circulated in a humidifier water circuit under continuous heating and heated in this way to a temperature between 40 and 95 degrees Celsius.

Erfindungsgemäß wird das Befeuchtungswasser in einem Befeuchtungskreislauf geführt. Auf diese Weise wird das Befeuchtungswasser ständig bereits mit einer hohen Wärmemenge an die Grenzfläche zwischen Wasser und Luft herantransportiert und die bei den konventionellen Vorrichtungen und Verfahren auftretende Abkühlung des Befeuchtungswassers an der Grenzfläche zur Luft vermieden. Die hohe Temperatur des Befeuchtungswassers an der Grenzfläche führt zu einem entsprechend hohen Übergang des Befeuchtungswassers von der flüssigen in die gasförmige Phase und dementsprechend zu einer starken Erhöhung der Befeuchterleistung.According to the humidification water is guided in a humidifying cycle. In this way, the moistening water is always transported up to the interface between water and air with a large amount of heat and the cooling of the moistening water at the air interface at the conventional devices and processes is avoided. The high temperature of the dampening water at the interface leads to a correspondingly high transition of humidifying water from the liquid to the gaseous phase and, accordingly, to a strong increase in the humidifier performance.

Weiterhin ermöglicht die Erwärmung und Kreislaufführung des Befeuchtungswassers eine weitgehend unabhängige Regelung der Luftbefeuchtung, da die Regelung der Vorerwärmung des Befeuchtungswassers eine Regelung der Luftbefeuchtung im Gefolge hat.Furthermore, the heating and recycling of humidifying water allows a largely independent control of humidification, since the control of preheating the humidifying water has a control of humidification in the wake.

Mit Hilfe der erfindungsgemäßen Vorrichtung und Verfahren ist es ferner auf besonders kostengünstige Weise möglich, die Leistung der Luftbefeuchtung zu steigern, da als Wärmequelle auf die ohnehin vorhandene Installation der Wärmeversorgung für den Lufterhitzer zurück gegriffen werden kann.With the help of the device and method according to the invention, it is also possible in a particularly cost-effective manner to increase the performance of the humidification, as can be used as a heat source back to the already existing installation of the heat supply for the air heater.

Zweckmäßigerweise liegt im Betrieb der erfindungsgemäßen Vorrichtung die Temperatur des erwärmten Befeuchtungswassers im Bereich zwischen 40 und 95 Grad Celsius.Appropriately, the temperature of the heated humidifying water is in the range between 40 and 95 degrees Celsius during operation of the device according to the invention.

Gemäß einer bevorzugten Weiterentwicklung der erfindungsgemäßen Vorrichtung weist der Befeuchtungskreislauf eine mit der Umwälzpumpe und dem Befeuchtungswärmeaustauscher verbundene Regelungseinheit auf, die zur Regelung der Umwälzgeschwindigkeit, des Druckes und/oder der Temperatur des Befeuchtungswassers in den Luftbefeuchtungsmitteln eingerichtet ist. Regelungseinheiten sind als solche bekannt, so dass an dieser Stelle auf deren Aufbau nicht genauer eingegangen zu werden braucht. So weist eine übliche Regelungseinheit zweckmäßige Parametersätze auf. Die Parametersätze werden mit Messwerten verglichen, welche die Regelungseinheit von geeigneten Messfühlern zur Verfügung gestellt werden. In Abhängigkeit dieser Parameter führt eine Regelungsroutine, die beispielsweise in Form von Softwareprogrammen vorliegt, bestimmte Regelungsschritte, wie beispielsweise das Erhöhen der Förderleistung der Umwälzpumpe durch.According to a preferred further development of the device according to the invention, the humidification circuit has a control unit connected to the circulation pump and the humidification heat exchanger, which is set up to regulate the circulation rate, the pressure and / or the temperature of the humidifying water in the humidifying means. Control units are known as such, so that at this point on their structure need not be discussed in more detail. Thus, a conventional control unit has expedient parameter sets on. The parameter sets are compared with measured values which the control unit is provided by suitable measuring sensors. Depending on these parameters, a control routine, for example in the form of software programs, performs certain control steps, such as increasing the flow rate of the circulation pump.

Gemäß einer diesbezüglich zweckmäßigen Weiterentwicklung weist der Befeuchtungskreislauf mit der Regelungseinheit verbundene Regelventile auf. Die Regelungseinheit ist somit in die Lage versetzt unter Zugriff auf die Umwälzpumpe und die Regelventile sowohl die Temperatur als auch den Druck des Befeuchtungswassers in den Befeuchtungsmitteln passend einzustellen.According to an expedient further development, the humidification circuit has control valves connected to the control unit. The control unit is thus able to adjust the temperature and the pressure of the humidifying water in the humidifying means by accessing the circulation pump and the regulating valves.

Zweckmäßigerweise weisen Luftbefeuchtungsmittel ein hohles hydrophiles und/oder poröses Material auf, das an den Befeuchtungskreislauf angeschlossen ist. Ein solches Material ist beispielsweise ein poröses Rohr, durch welches das Befeuchtungswasser unter der Wirkung der Umwälzpumpe getrieben wird. Dabei dringt das Befeuchtungswasser je nach eingestelltem Druck durch die poröse Wand des Rohres nach Außen, wo es beispielsweise durch einen erwärmten Luftstrom in seine Dampfphase überführt wird. Das hohle poröse Material ist bei einer diesbezüglichen Weiterentwicklung in einem Wärme leitenden Kontakt mit einem Heizelement eines Lufterhitzerregisters.Conveniently, humidifying means comprise a hollow hydrophilic and / or porous material connected to the humidifying circuit. Such a material is, for example, a porous tube through which the dampening water is driven under the action of the circulation pump. Depending on the pressure set, the dampening water penetrates through the porous wall of the pipe to the outside, where it is transferred into its vapor phase, for example, by a heated air flow. The hollow porous material is in a related development in a heat-conducting contact with a heating element of an air heater register.

Abweichend hiervon oder zusätzlich zu dem hohlen hydrophilen und/oder porösen Material weisen die Luftbefeuchtungsmittel ein perforiertes oder mit Öffnungen versehenes Material auf. Aus den Öffnungen kommt es zum Austritt des Befeuchtungswassers.Unlike or in addition to the hollow hydrophilic and / or porous material, the humidifying means comprise a perforated or apertured material. From the openings it comes to the outlet of dampening water.

Vorteilhafterweise ist der Befeuchtungskreislauf über eine Wasseraufbereitungsanlage mit einer Wasserversorgung verbindbar. Die Wasseraufbereitungsanlage dient zur Beseitigung unerwünschter im Befeuchtungswasser gelöster Substanzen.Advantageously, the humidification circuit can be connected to a water supply via a water treatment plant. The water treatment plant is used to remove unwanted substances dissolved in dampening water.

Zweckmäßigerweise erstrecken sich die Befeuchtungsmittel in einem vom Luftstrom durchströmbaren Luftheizregister mit Heizelementen. Die Heizelemente sind beispielsweise unabhängig von dem Befeuchtungswärmeaustauscher ausgebildet. Im Falle einer Kopplung der Heizelemente mit dem Befeuchtungswärmetauscher ist ein Vorwärmen des Befeuchtungswassers ohne Erwärmung des Luftstromes durch die Heizelemente beispielsweise herbeiführbar, indem der Vor- und Rücklauf der Heizelemente nach dem Befeuchtungswärmetauscher jedoch vor dem Ein- beziehungsweise Austritt in den Luftheizregister kurzgeschlossen werden.Expediently, the moistening agents extend in a air heating device through which air flow can flow with heating elements. The heating elements are for example formed independently of the Befeuchtungswärmeaustauscher. In the case of a coupling of the heating elements with the Befeuchtungswärmetauscher a preheating of the humidification without heating the air flow through the heating elements, for example, by the supply and return of the heating elements after the humidification heat exchanger, however, are shorted before entering or leaving the air heater.

Gemäß einer diesbezüglich zweckmäßigen Weiterentwicklung ist der Befeuchtungswärmetauscher mit einem Vorlauf des Luftheizregisters gekoppelt. Auf diese Weise ist ein besonders kostengünstiges Vorerwärmen des Befeuchtungswassers ermöglicht, da auf eine gesonderte Energieversorgung für die Vorerwärmung verzichtet werden kann. Die Vorerwärmung des Befeuchtungswassers führt auch zu keiner Beeinträchtigung der Wärmeleistung des Luftheizregisters, da die durch das Vorerwärmen verbrauchte Wärmeenergie, die beispielsweise wenige Prozent bezogen auf den Gesamtenergiebedarf zur Luftkonditionierung (Erwärmung und Befeuchtung) beträgt, über das Befeuchtungswasser auch auf die zu erwärmende und zu befeuchtende Luft übertragen wird.According to an expedient further development of the humidifying heat exchanger is coupled to a flow of Luftheizregisters. In this way, a particularly cost preheating of the humidifying water is possible, since it can be dispensed with a separate power supply for preheating. The preheating of the humidifying water also leads to no impairment of the heat output of Luftheizregisters because the consumed by the preheating heat energy, for example, a few percent based on the total energy demand for air conditioning (heating and humidification), on the humidification water also to be heated and humidified Air is transmitted.

Zweckmäßigerweise sind die Heizelemente Wärme leitend mit einem hohlen hydrophilen und/oder porösen Material verbunden. Auf diese Weise wird die Befeuchtungsleistung noch weiter erhöht.Conveniently, the heating elements are heat conductively connected to a hollow hydrophilic and / or porous material. In this way, the humidification performance is further increased.

Vorteilhafterweise weisen die Luftbefeuchtungsmittel ein sich durch ein Luftheizregister erstreckendes Befeuchtungsrohr auf, das über Befeuchtungsöffnungen zur Abgabe des Befeuchtungswassers verfügt. Auch bei dieser Variante der Erfindung hat sich erwiesen, dass durch die Vorerwärmung des Befeuchtungswassers die Luftbefeuchtungsleistung beträchtlich gesteigert werden kann.Advantageously, the humidifying means comprises a humidifying tube extending through an air heating coil and having humidifying ports for delivering the humidifying water. Also in this variant of the invention has been found that the humidification performance can be increased considerably by the preheating of the humidification.

Vorteilhafterweise weist das Luftheizregister Schichten aus einem die Verdunstung fördernden Material auf. Solche Materialien sind beispielsweise hydrophile Materialien, die entgegen der Oberflächenspannung des flüssigen Befeuchtungswassers eine flächigere Benetzung des die Verdunstung fördernden Materials herbeiführen. Die flächigere Benetzung erleichtert das Verdampfen des Befeuchtungswassers. Neben hydrophilen Materialien kommen in diesem Zusammenhang Materialien mit einer großen beispielsweise körnigen Außenoberfläche in Betracht.Advantageously, the air heater on layers of a evaporation promoting material. Such materials are, for example, hydrophilic materials which, contrary to the surface tension of the liquid moistening water, bring about a more extensive wetting of the material promoting the evaporation. The more extensive wetting facilitates the evaporation of dampening water. In addition to hydrophilic materials in this context materials with a large, for example, grainy outer surface into consideration.

Bei einer vorteilhaften Weiterentwicklung des erfinderischen Verfahrens wird das erwärmte Befeuchtungswasser in ein hohles poröses und/oder hydrophiles Material eingeleitet. Hierbei werden die bereits erläuterten Vorteile erzielt.In an advantageous further development of the inventive method, the heated dampening water is introduced into a hollow porous and / or hydrophilic material. Here, the already explained advantages are achieved.

Aus den ebenfalls bereits dargestellten Gründen hat es sich als zweckmäßig erwiesen, das erwärmte Befeuchtungswasser in ein perforiertes und/oder Löcher aufweisendes Material einzuleiten.For the reasons already shown, it has proved to be useful to initiate the heated dampening water in a perforated and / or holes exhibiting material.

Vorteilhaft ist auch, dass sich das hohle poröse Material in einem Wärmeaustauschregister mit Heizelementen erstreckt.It is also advantageous that the hollow porous material extends in a heat exchange register with heating elements.

Zweckmäßigerweise erwärmen die Heizelemente das hohle poröse Material.Conveniently, the heating elements heat the hollow porous material.

Weitere zweckmäßige Ausgestaltungen und Vorteile der Erfindung sind Gegenstand der nachfolgenden Beschreibung von Ausführungsbeispielen der Erfindung unter Bezug auf die Figuren der Zeichnung, wobei gleich wirkende Bauteile mit gleichen Bezugszeichen versehen sind und wobei

Figur 1a
ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung, bei der der Vor- und Rücklauf des Heizmittelkreislaufes durch den Befeuchtungswärmeaustauscher geleitet sind,
Figur 1b
ein weiteres Ausführungsbeispiel der erfindungsgemäßen Vorrichtung, bei der nur der Vorlauf des Heizmittelkreislaufes durch den Wärmeaustauscher geleitet ist,
Figur 2
eine Vorrichtung gemäß Figur 1a mit einem separat ausgeführten und schematisch dargestellten Lufterhitzer und Luftbefeuchter,
Figur 3
eine Vorrichtung gemäß Figur 1a mit einem Lufterhitzer und einem Luftbefeuchter, die zu einem schematisch dargestellten Modul kombiniert sind, und
Figur 4
eine Vorrichtung gemäß Figur 3 mit einem Lufterhitzer und einem Luftbefeuchter zeigen, die zu einem genauer dargestellten Modul kombiniert sind.
Further expedient embodiments and advantages of the invention are the subject of the following description of embodiments of the invention with reference to the figures of the drawing, wherein like-looking components are provided with the same reference numerals, and wherein
FIG. 1a
An embodiment of the device according to the invention, in which the supply and return of the heating medium circuit are passed through the Befeuchtungswärmausustauscher,
FIG. 1b
a further embodiment of the device according to the invention, in which only the flow of Heizmittelkreislaufes is passed through the heat exchanger,
FIG. 2
a device according to FIG. 1a with a separately executed and schematically illustrated air heater and humidifier,
FIG. 3
a device according to Figure 1a with an air heater and a humidifier, which are combined into a schematically illustrated module, and
FIG. 4
show a device according to Figure 3 with an air heater and a humidifier, which are combined to form a module shown in more detail.

Figur 1a zeigt ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung. Die Vorrichtung weist einen Befeuchtungswärmeaustauscher 13 auf, durch den ein Vorlauf 12,15 und ein Rücklauf 16,11 eines in der Figur 1a nicht dargestellten Luftheizregisters geleitet ist. Durch den besagten Vorlauf 12,15 wird ein aufgeheiztes flüssiges Heizmedium geleitet und auf diese Weise einem ebenfalls nicht dargestellten Heizelement des Luftheizregisters zugeführt. Das flüssige Heizmittel des Vorlaufs 12,15 ist beispielsweise durch so genannte Fernwärme aufgeheizt. Abweichend hiervon ist jedoch auch möglich, dass ein weiterer ortsnah aufgestellter Wärmeaustauscher im Rahmen der Erfindung eingesetzt ist, um ein Aufheizen des Heizelements des Luftheizregisters zu ermöglichen.FIG. 1a shows an exemplary embodiment of the device according to the invention. The apparatus comprises a humidification heat exchanger 13, through which a flow 12,15 and a return 16,11 of a Luftheizregisters not shown in the figure 1a is passed. By the said flow 12,15 a heated liquid heating medium is passed and supplied in this way a likewise not shown heating element of the Luftheizregisters. The liquid heating means of the flow 12,15 is heated for example by so-called district heating. Deviating from this, however, it is also possible that another local heat exchanger is used in the context of the invention to allow heating of the heating element of Luftheizregisters.

Der Befeuchtungswärmeaustauscher 13 ist Teil eines Befeuchtungskreislaufes 5, der weiterhin über eine Umwälzpumpe 7 sowie über Regelventile 6 und 7 verfügt. Der Befeuchtungskreislauf 5 ist über einen Befeuchtungszulauf 17 sowie über einen Befeuchtungsablauf 18 mit einem ebenfalls in Figur 1a nicht dargestellten Luftbefeuchter verbunden, mit dem die relative Luftfeuchtigkeit eines den Luftbefeuchter durchsetzenden Luftstromes erhöht werden kann. Auf die Funktionsweise des Luftbefeuchters wird nachfolgend noch genauer eingegangen.The Befeuchtungswärmeaustauscher 13 is part of a humidifying 5, which further has a circulating pump 7 and control valves 6 and 7. The humidifying circuit 5 is connected via a Befeuchtungszulauf 17 and a humidification 18 with a humidifier, also not shown in Figure 1a, with which the relative humidity of the air humidifier passing through the air stream can be increased. On the Functioning of the humidifier will be discussed in more detail below.

Der Befeuchtungskreislauf 5 ist über eine Wasseraufbereitungsanlage 3 an eine übliche Wasserversorgung 1, wie beispielsweise an eine Stadtwasserleitung angeschlossen. Zur Regelung der Wasserzufuhr dient wiederum ein Regelungsventil 4.The humidification circuit 5 is connected via a water treatment plant 3 to a conventional water supply 1, such as a city water pipe. To regulate the water supply in turn serves a control valve. 4

Die Regelungsventile 4, 6 und 10 sowie die Umwälzpumpe 7 sind mit einer in Figur 1a nicht dargestellten Regelungseinheit verbunden, die zum Einstellen des Durchflusses durch die Regelungsventile 4, 6 und 10 und zum Einstellen der Pumpleistung der Umlaufpumpe 7 eingerichtet ist. Die Regelungseinheit ist ferner mit in Figur 1a nicht dargestellten Temperatur- und Druckgebern verbunden. Auf diese Weise ist eine Regelung des Druckes, der Temperatur und der Durchflussgeschwindigkeit des Befeuchtungswassers in dem Befeuchtungsmittel 5 ermöglicht. Die Regelung erfolgt in Abhängigkeit vorbestimmter Stellparameter und mit Hilfe einer in der Regelungseinheit implementierten Logik.The control valves 4, 6 and 10 and the circulation pump 7 are connected to a control unit, not shown in Figure 1a, which is set for adjusting the flow through the control valves 4, 6 and 10 and for adjusting the pump power of the circulation pump 7. The control unit is further connected to temperature and pressure sensors, not shown in Figure 1a. In this way, a regulation of the pressure, the temperature and the flow rate of the humidifying water in the humidifying means 5 is made possible. The regulation takes place as a function of predetermined setting parameters and with the aid of a logic implemented in the control unit.

Figur 1b zeigt ein weiteres Ausführungsbeispiel der erfindungsgemäßen Vorrichtung, wobei im Gegensatz zu dem in Figur 1a gezeigten Ausführungsbeispiel lediglich der Vorlauf 12,15 des Luftheizregisters durch den Befeuchtungswärmeraustauscher 13 geführt ist.Figure 1b shows a further embodiment of the device according to the invention, wherein in contrast to the embodiment shown in Figure 1a, only the flow 12,15 of Luftheizregisters is guided by the Befeuchtungswärmeraustauscher 13.

Figur 2 zeigt eine Vorrichtung gemäß Figur 1a mit einem schematisch dargestellten Luftheizregister 9. Das Luftheizregister 9 ist in einem kanalförmigen Gehäuse 14 einer raumlufttechnischen Anlage angeordnet, wobei das Gehäuse 14 von einem Luftstrom 13 in der gezeigten Pfeilrichtung durchsetzt wird. Im Wege des Luftstromes 13 ist dem Luftheizregister 9 ein Luftbefeuchter 8 nachgeschaltet, der über den Zulauf 17 bzw. über den Ablauf 18 mit dem Befeuchtungskreislauf 5 kommuniziert. Durch das Erwärmen des Befeuchtungswassers, das in dem Befeuchtungskreislaufs 5 teilweise umläuft, ist die Erhöhung der relativen Luftfeuchtigkeit des durch das Luftheizregister 9 aufgeheizten Luftstromes 13 erleichtert.FIG. 2 shows a device according to FIG. 1a with a schematically shown air heating coil 9. The air heating coil 9 is arranged in a channel-shaped housing 14 of a ventilation system, wherein the housing 14 is penetrated by an air flow 13 in the arrow direction shown. By way of the air flow 13, the air heating coil 9 is followed by a humidifier 8, which communicates via the inlet 17 or via the outlet 18 with the humidifying circuit 5. By heating the dampening water that partially circulates in the humidifying circuit 5 is the increase in the relative humidity of the air heated by the air heater 9 air flow 13 facilitates.

Zur Abgabe des Befeuchtungswassers in den Luftstrom 13 weist der Luftbefeuchter 8 beispielsweise ein übliches Düsenrohr auf, wobei das Befeuchtungswasser aus den Düsen austritt und vom Luftstrom 13 mitgerissen und erwärmt wird.For dispensing the dampening water into the air stream 13, the humidifier 8, for example, a conventional nozzle tube, wherein the dampening water exiting the nozzle and entrained by the air flow 13 and is heated.

Figur 3 zeigt ein weiteres Ausführungsbeispiel der Vorrichtung gemäß Figur 2, wobei jedoch Luftheizregister und Luftbefeuchter zu einem schematisch angedeuteten gemeinsamen Kombinationsregister 21 kombiniert sind.FIG. 3 shows a further exemplary embodiment of the device according to FIG. 2, wherein, however, air heating registers and humidifiers are combined to form a schematically indicated common combination register 21.

Figur 4 zeigt das Ausführungsbeispiel gemäß Figur 3 mit einem genauer dargestellten Kombinationsregister 24. Das dort dargestellte Kombinationsregister 24 weist parallel zueinander ausgerichtete flächige Wärmetauscherlamellen 28 auf, die in einer Querrichtung von rohrförmig ausgebildeten Heizelementen 26 durchsetzt sind. Dabei stehen die Heizelemente 26 in Wärme leitendem Kontakt mit den Wärmeaustauscherlamellen 28 und werden über den Zulauf 15 mit aufgeheiztem flüssigem Heizmedium versorgt, das durch die rohrförmigen Heizelemente 26 strömt. Durch die Heizelemente 26 kommt es zur Aufheizung der Wärmeaustauscherlamellen 28 und somit zur Erwärmung des an den Wärmeaustauscherlamellen 28 vorbeiströmenden Luftstromes 13.FIG. 4 shows the exemplary embodiment according to FIG. 3 with a combination register 24 shown in more detail. The combination register 24 shown there has planar heat exchanger fins 28 aligned parallel to one another and traversed in a transverse direction by tubular heating elements 26. The heating elements 26 are in heat-conducting contact with the heat exchanger fins 28 and are supplied via the inlet 15 with heated liquid heating medium flowing through the tubular heating elements 26. The heating elements 26 heat the heat exchanger lamellae 28 and thus heat the air stream 13 flowing past the heat exchanger lamellae 28.

Zwischen den Heizelementen 26 sind ferner rohrförmige Luftbefeuchtungsmittel 25 erkennbar, welche die Wärmeaustauschlamellen 28 ebenfalls in Querrichtung durchsetzen und in Wärme leitendem Kontakt mit diesen stehen. Die Luftbefeuchtungsmittel 25 sind über den Zulauf 17 und den Ablauf 18 an den Befeuchtungskreislauf 5 angeschlossen und bestehen aus einem porösen Material. In dem rohrförmigen porösen Material teilweise umlaufendes Befeuchtungswasser durchdringt in Abhängigkeit des von der nicht gezeigten Regelungseinheit eingestellten Druckes die Wand des porösen Materials und wird durch die gleichzeitig stattfindende Erwärmung ohne Tröpfchenbildung in seine Gasphase überführt.Between the heating elements 26 further tubular air humidifying means 25 can be seen, which also enforce the heat exchange fins 28 in the transverse direction and are in heat-conducting contact with them. The humidifying means 25 are connected via the inlet 17 and the outlet 18 to the humidifying 5 and consist of a porous material. In the tubular porous material partially circulating humidifying water penetrates depending on the pressure set by the control unit, not shown, the wall of the porous material and is transferred by the simultaneous heating without droplet formation in its gas phase.

Zum Auffangen von Befeuchtungs- oder Kondenswasser ist unterhalb des Kombinationsregisters 24 eine Wasserablaufwanne 22 angeordnet, die über einen Wasserablaufstutzen 23 zum Abführen des Wassers verfügt.For collecting moistening or condensation water, a water drainage trough 22 is arranged below the combination register 24 and has a water outlet nozzle 23 for discharging the water.

Claims (18)

Vorrichtung zur Erhöhung der relativen Luftfeuchtigkeit eines Luftstromes (13) mit Luftbefeuchtungsmitteln (25), die in dem Luftstrom (13) angeordnet und zur Abgabe von Befeuchtungswasser an den Luftstrom (13) eingerichtet sind, dadurch gekennzeichnet, dass die Luftbefeuchtungsmittel (25) mit einem Befeuchtungskreislauf (5) verbunden sind, der über eine Umwälzpumpe (7) zum Umwälzen des Befeuchtungswassers in dem Befeuchtungskreislauf (5) und über einen Befeuchtungswärmeaustauscher (13) zum Erwärmen des Befeuchtungswassers unterhalb des Siedepunktes verfügt.Apparatus for increasing the relative humidity of an air stream (13) with air humidifying means (25) arranged in the air stream (13) and adapted to deliver moistening water to the air stream (13), characterized in that the air moistening means (25) are provided with a Humidification (5) are connected, which has a circulation pump (7) for circulating the humidifying water in the humidifying circuit (5) and a Befeuchtungswärmeaustauscher (13) for heating the dampening water below the boiling point. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass im Betrieb der Vorrichtung die Temperatur des erwärmten Befeuchtungswassers im Bereich zwischen 40 und 95 Grad Celsius liegt.Apparatus according to claim 1, characterized in that during operation of the device, the temperature of the heated dampening water is in the range between 40 and 95 degrees Celsius. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Befeuchtungskreislauf (5) eine mit der Umwälzpumpe (7) und dem Befeuchtungswärmeaustauscher (13) verbundene Regelungseinheit aufweist, die zur Regelung der Umwälzgeschwindigkeit, des Druckes und/oder der Temperatur des Befeuchtungswassers in den Luftbefeuchtungsmitteln (25) eingerichtet ist.Device according to claim 1 or 2, characterized in that the humidifying circuit (5) has a control unit connected to the circulating pump (7) and the humidification heat exchanger (13) for controlling the circulation speed, pressure and / or temperature of the humidifying water in the Humidifying means (25) is arranged. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Befeuchtungskreislauf (5) mit der Regelungseinheit verbundene Regelventile (4, 6, 10) aufweist.Apparatus according to claim 3, characterized in that the humidifying circuit (5) connected to the control unit control valves (4, 6, 10). Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Luftbefeuchtungsmittel ein hohles hydrophiles und/oder poröses Material (15) aufweisen, das an den Befeuchtungskreislauf (5) angeschlossen ist.Device according to one of the preceding claims, characterized in that the humidifying means comprise a hollow hydrophilic and / or porous material (15) which is connected to the humidifying circuit (5). Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Luftbefeuchtungsmittel (25) ein perforiertes oder mit Öffnungen versehenes Material aufweisen.Device according to one of the preceding claims, characterized in that the humidifying means (25) comprise a perforated or apertured material. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass das hohle hydrophile und/oder poröse Material als poröse Befeuchtungsrohre (25) realisiert ist.Apparatus according to claim 5, characterized in that the hollow hydrophilic and / or porous material is realized as a porous humidifying tubes (25). Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Befeuchtungskreislauf (5) über eine Wasseraufbereitungsanlage (3) mit einer Wasserversorgung (1) verbindbar ist.Device according to one of the preceding claims, characterized in that the humidifying circuit (5) via a water treatment plant (3) with a water supply (1) is connectable. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Befeuchtungsmittel (25) in einem vom Luftstrom (13) durchströmbares Luftheizregister (9, 24) mit Heizelementen (26) erstrecken.Device according to one of the preceding claims, characterized in that the humidifying means (25) extend in an air heating coil (9, 24) through which the air flow (13) can flow with heating elements (26). Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass der Befeuchtungswärmetauscher (13) wenigstens mit einem Vorlauf (12,15) des Luftheizregisters (9,24) gekoppelt ist.Apparatus according to claim 9, characterized in that the moistening heat exchanger (13) is coupled to at least one feed line (12, 15) of the air heating register (9, 24). Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die Heizelemente (26) Wärme leitend mit einem hohlen hydrophilen und/oder porösen Material verbunden sind.Apparatus according to claim 9 or 10, characterized in that the heating elements (26) are heat conductively connected to a hollow hydrophilic and / or porous material. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Luftbefeuchtungsmittel (25) ein sich durch ein Luftheizregister (9,24) erstreckendes Befeuchtungsrohr aufweisen, das über Befeuchtungsöffnungen zur Abgabe des Befeuchtungswassers verfügt.Device according to one of the preceding claims, characterized in that the humidifying means (25) comprise a humidifying tube extending through an air heating coil (9, 24), which has humidifying openings for the delivery of the humidifying water. Vorrichtung nach einem Anspruch 12, dadurch gekennzeichnet, dass das Luftheizregister (9,24) Schichten aus einem die Verdunstung fördernden Material aufweist. That the air heating Device according to one claim 12, characterized in that (9.24) layers of the evaporation promotional material. Verfahren zum Befeuchten eines Luftstromes, bei dem Befeuchtungswasser in den Luftstrom (13) eingebracht wird, dadurch gekennzeichnet, dass das Befeuchtungswasser in einem Befeuchterwasserkreislauf (5) unter kontinuierlicher Erwärmung umgewälzt und auf diese Weise auf eine Temperatur zwischen 40 und 95 Grad Celsius erwärmt wird.Method for moistening an air flow, in which dampening water is introduced into the air stream (13), characterized in that the dampening water is circulated in a humidifier water circuit (5) under continuous heating and heated in this way to a temperature between 40 and 95 degrees Celsius. Verfahren nach Anspruch 14, dadurch gekennzeichnet, dass das erwärmte Befeuchtungswasser in ein hohles poröses und/oder hydrophiles Material (25) eingeleitet wird.A method according to claim 14, characterized in that the heated dampening water is introduced into a hollow porous and / or hydrophilic material (25). Verfahren nach Anspruch 14 oder 15, dadurch gekennzeichnet, dass das erwärmte Befeuchtungswasser in ein perforiertes und/oder Löcher aufweisendes Material eingeleitet wird.A method according to claim 14 or 15, characterized in that the heated dampening water is introduced into a perforated and / or holes having material. Verfahren nach eine, der Ansprüche Anspruch 14 bis 16, dadurch gekennzeichnet, dass sich das hohle poröse Material (25) in einem Wärmeaustauschregister (9, 24) mit Heizelementen erstreckt.Method according to one of claims 14 to 16, characterized in that the hollow porous material (25) extends in a heat exchange register (9, 24) with heating elements. Verfahren nach Anspruch 14, dadurch gekennzeichnet, dass die Heizelemente (26) das hohle poröse Material erwärmen.A method according to claim 14, characterized in that the heating elements (26) heat the hollow porous material.
EP05090076A 2005-03-29 2005-03-29 Device and method for humidifying an airflow Not-in-force EP1710516B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DE502005005748T DE502005005748D1 (en) 2005-03-29 2005-03-29 Apparatus and method for humidifying an airflow
DK05090076T DK1710516T3 (en) 2005-03-29 2005-03-29 Apparatus and method for wetting an air stream
PL05090076T PL1710516T3 (en) 2005-03-29 2005-03-29 Device and method for humidifying an airflow
ES05090076T ES2319786T3 (en) 2005-03-29 2005-03-29 DEVICE AND PROCEDURE FOR THE HUMIDIFICATION OF AN AIR FLOW.
EP05090076A EP1710516B1 (en) 2005-03-29 2005-03-29 Device and method for humidifying an airflow
AT05090076T ATE412148T1 (en) 2005-03-29 2005-03-29 DEVICE AND METHOD FOR HUMIDIFYING AN AIR STREAM
JP2008503443A JP2008545113A (en) 2005-03-29 2006-03-29 Device and method for humidifying air flow
CA002603336A CA2603336A1 (en) 2005-03-29 2006-03-29 Device and method for humidifying an air flow
PCT/EP2006/003029 WO2006103108A1 (en) 2005-03-29 2006-03-29 Device and method for humidifying an air flow
US11/910,363 US20080157411A1 (en) 2005-03-29 2006-03-29 Device and Method for Humidifying an Air Flow
NO20074812A NO328977B1 (en) 2005-03-29 2007-09-21 Device and method for wetting an air stream

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EP05090076A EP1710516B1 (en) 2005-03-29 2005-03-29 Device and method for humidifying an airflow

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EP1710516A1 true EP1710516A1 (en) 2006-10-11
EP1710516B1 EP1710516B1 (en) 2008-10-22

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JP (1) JP2008545113A (en)
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CA (1) CA2603336A1 (en)
DE (1) DE502005005748D1 (en)
DK (1) DK1710516T3 (en)
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NO328977B1 (en) 2010-07-05
ATE412148T1 (en) 2008-11-15
DE502005005748D1 (en) 2008-12-04
WO2006103108A1 (en) 2006-10-05
JP2008545113A (en) 2008-12-11
ES2319786T3 (en) 2009-05-12
DK1710516T3 (en) 2009-02-16
EP1710516B1 (en) 2008-10-22
NO20074812L (en) 2007-10-29
PL1710516T3 (en) 2009-04-30
CA2603336A1 (en) 2006-10-05
US20080157411A1 (en) 2008-07-03

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