WO2013023722A1 - Cooling device for outside air used for production of a supply air flow and method for cooling same - Google Patents

Cooling device for outside air used for production of a supply air flow and method for cooling same Download PDF

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Publication number
WO2013023722A1
WO2013023722A1 PCT/EP2012/002844 EP2012002844W WO2013023722A1 WO 2013023722 A1 WO2013023722 A1 WO 2013023722A1 EP 2012002844 W EP2012002844 W EP 2012002844W WO 2013023722 A1 WO2013023722 A1 WO 2013023722A1
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WO
WIPO (PCT)
Prior art keywords
outside air
air
cooling device
heat exchanger
plate heat
Prior art date
Application number
PCT/EP2012/002844
Other languages
German (de)
French (fr)
Inventor
Kai Klingenburg
Original Assignee
Klingenburg Gmbh
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Publication date
Application filed by Klingenburg Gmbh filed Critical Klingenburg Gmbh
Publication of WO2013023722A1 publication Critical patent/WO2013023722A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F24F3/1405—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 in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • 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
    • F24F3/147—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 with both heat and humidity transfer between supplied and exhausted air
    • 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
    • F24F3/153—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 with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • the invention relates to a cooling device for outside air used for generating a supply air, which has a comparatively high temperature and a relatively high relative humidity, in which cooling device the outside air used to generate the supply air can be cooled by means of exhaust air.
  • the temperature of the ambient or outside air is above that desired for the room to be conditioned.
  • the difference between the outside air temperature and the desired temperature in the room to be conditioned can be very high.
  • the invention is based on the object of further developing the initially described cooling device for outside air used for generating a supply air flow in such a way that it has a comparatively high efficiency for air conditioning. tion of rooms can be used, the technical design cost of the cooling device should be relatively low.
  • the cooling device comprises two successively arranged plate heat exchanger, which are flowed through by the outside air and the exhaust air in succession, and that between an outdoor modalluftausgang of the first air flowed through by the outside air plate heat exchanger and an outside air inlet of the outside air thereafter flowed through plate heat exchanger in the flow path of the outside air, a coolant is arranged, by means of which the outside air can be cooled and the outside air moisture is withdrawn.
  • the inventively designed cooling device it is possible, even at very high ambient temperatures and relatively high relative humidities of the outside air with a comparatively low technical and design effort to ensure any requirement profiles sufficient air conditioning of rooms or interiors.
  • the cooling and dehumidification performance to be realized by the cooling registers can be reduced so that cooling coils with lower capacities and correspondingly lower operating and energy costs can be used.
  • On NachMapregister by means of which in known from the prior art conventional such cooling devices, the air is heated downstream of the cooling coil back to a tern tem- tese temperature level, can be dispensed with in the case of the cooling device according to the invention.
  • the acquisition, operating and energy costs of the Cooling devices according to the invention can be further reduced.
  • the reheating of the supply air downstream of the cooling register is realized in the case of the cooling device according to the invention without the use of energy-costing aggregates.
  • the cooling device has more than two, for example, three, successively arranged plate heat exchanger, wherein at least between a plate having an outdoor air outlet plate heat exchanger and a outside air inlet, subsequent plate heat exchanger, a coolant is arranged.
  • a coolant can be provided in a corresponding arrangement.
  • the coolant can be advantageously designed in the form of a cooling register, wherein by means of such a cooling register of the flowing air flow is both cooled and reduced in its moisture content.
  • the outside air in the coolant from a temperature which, preferably significantly, above the temperature at which the exhaust air in the following in the flow path of the outside air to the coolant plate heat exchanger, in which the outside air nacher stiirmbar by means of the exhaust air is, cools down to a temperature which, preferably significantly, below the temperature at which the exhaust air enters the following in the flow path of the outside air to the coolant plate heat exchanger, wherein the outside air in the arranged in the flow path of the outside air upstream of the coolant plate heat exchanger is pre-cooled by means of the exhaust air.
  • the plate heat exchanger of the cooling device are designed as countercurrent heat exchangers. Alternatively, it is possible to use the plate heat exchanger as
  • At least one plate heat exchanger as a countercurrent heat exchanger and at least one plate heat exchanger as a crossflow heat exchanger.
  • the outside air used to generate the supply air is cooled by means of exhaust air.
  • the outside air successively flows through the plate heat exchanger of the cooling device successively arranged, that the exhaust air flows through the successively arranged plate heat exchanger of the cooling device in opposite directions in succession, and that the or the outside air between two plate heat exchangers through which it flows by means of a coolant, preferably one
  • Cooling register cooled or deprived of moisture.
  • the outside air in the coolant arranged between two plate heat exchangers is at a temperature which, preferably clearly, is above the temperature with which the exhaust air flows into the flow path of the outside air the coolant following plate heat exchanger, in which the outside air is reheated by means of the exhaust air enters, cooled to a temperature which, preferably significantly, below the temperature at which the exhaust air enters in the flow path of the outside air following the coolant plate heat exchanger wherein the outside air is pre-cooled in the plate heat exchanger arranged upstream of the coolant in the flow path of the outside air by means of the exhaust air.
  • the exhaust air or the exhaust air flow is used to reheat the supply air downstream of the cooling register and to pre-cool the supply and outdoor air in the surrounding plate heat exchanger.
  • a cooling device 1 shown in the single figure is intended to be used in climatic conditions in which both the temperature and the relative humidity of the ambient and outdoor air are comparatively high. Such climatic conditions occur, for example, in the states of the Arabian and Persian Gulfs. Also in other areas, which are assigned to the tropical or subtropical climatic area, such climatic conditions may exist.
  • outside air 2 is to be cooled or conditioned such that a supply air flow 3 generated from this outside air 2, which flows from the cooling device 1 into a space to be air-conditioned. occurs, has a desired temperature and a desired relative humidity.
  • the temperature of exhaust air 4 which is to be led out of the room to be conditioned, usually and moreover comparatively much cooler than the temperature of entering the cooler 1 outside air 2, the exhaust air 4 is used to to cool the outside air 2 in the cooling device 1.
  • the cooling device 1 has two in the embodiment shown as countercurrent heat exchanger 5, 6 formed plate heat exchanger.
  • the two countercurrent heat exchangers 5, 6 are arranged one behind the other both in the flow direction of the outside air 2 and in the flow direction of the exhaust air 4, wherein the flow direction of the outside air 2 is opposite to the flow direction of the exhaust air 4, so that the exhaust air 4 as it enters the cooling device from the to room to be conditioned out enters the countercurrent heat exchanger 6, which is exited by the outside air 2 and the supply air stream 3 when the outside air 2 and the supply air stream 3 enters the room to be conditioned.
  • the exhaust air 4 flows, as indicated by the corresponding arrows 4, from the room to be conditioned in the cooling device 1, through the countercurrent heat exchanger 6, downstream of the countercurrent heat exchanger 6 through an exhaust duct 7 of the cooling device 1 and then through the countercurrent heat exchanger 5.
  • After emerging from the Countercurrent heat exchanger 5 exits the exhaust air 4 as exhaust air stream 8 from the cooling device 1 in the environment. Accordingly flows through the outside air 2 inside the cooling ⁇ device 1, first their countercurrent heat exchanger 5, downstream of the countercurrent heat exchanger 5, an outside air duct 9 of the cooling device 1 and then the air to be conditioned
  • a cooling register 12 is arranged between an outside air outlet 10 of the countercurrent heat exchanger 5 of the cooling device 1 facing the environment and an outside air inlet 11 of the countercurrent heat exchanger 6 of the cooling device 1 facing the room to be cooled, by means of which the outside air 2 can be cooled and by means of the outside air 2 humidity is withdrawn.
  • this cooling register 12 is configured and designed so that the outside air 2 in the outside air duct 9 of the cooling device 1 can be cooled comparatively strongly.
  • the temperature of the outside air 2 in the exemplary embodiment shown is significantly above that temperature with which the exhaust air 4 enters the counterflow heat exchanger 6 facing the space to be conditioned.
  • Cooling register 12 the temperature of the outside air 2 is well below the temperature of the exhaust air 4 entering the room to be air-conditioned countercurrent heat exchanger 6.
  • the outside air 2 enters with a flow volume. of 850 m 3 / h in the cooling device 1 a. Accordingly, the exhaust air 4 enters the cooling device 1 with the same flow volume from the other side.
  • the temperature of the outside air 2 entering the cooling device 1 is e.g. 42 degrees C, their relative humidity 60%.
  • the moisture content of the outside air 2 when entering the cooling device 1 is 31.75 g / kg.
  • the outside air 2 In the environment facing countercurrent heat exchanger 5 of the cooling device 1, the outside air 2 is cooled to a temperature of 33.5 degrees C. The relative humidity of the outside air 2 increases in the countercurrent heat exchanger 5 to 76.2%, the moisture content of the outside air 2 falls in countercurrent heat exchanger 5 to 25.18 g / kg.
  • the cooling register 12 which is arranged between the outside air outlet 10 of the left countercurrent heat exchanger 5 in the figure and the outside air inlet 11 of the right countercurrent heat exchanger 6 in the figure, the outside air 2 is cooled to a temperature of 12.0 degrees C. The relative humidity increases to 99.0%, the moisture content drops to 8.64 g / kg.
  • the outside air 2 In the counter-flow heat exchanger 6 of the cooling device 1 facing the room to be conditioned, the outside air 2 is heated to a temperature of 21.7 degrees C.
  • the relative humidity is 53.5% downstream of the countercurrent heat exchanger 6, the moisture content of the outside air 2 remains unchanged at 8.64 g / kg. With these properties, the outside air 2 enters as a supply air stream 3 in the room to be conditioned.
  • the moisture content of the exhaust 4 downstream of the countercurrent heat exchanger 6 is unchanged at 10.24 g / kg.
  • the exhaust air 4 After flowing through the air channel 7, the exhaust air 4 is in the counterflow heat exchanger 5 facing the environment of the cooling device 1. In this, the exhaust air 4 is heated to a temperature of 39.3 degrees C; the relative humidity is correspondingly reduced to 23.1%, while the moisture content remains 10.24 g / kg. With these properties, the exhaust air 4 exits the countercurrent heat exchanger 5 of the cooling device 1 and then leaves the cooling device 1 as the outgoing air stream 8.
  • the exhaust air 4 is cooled by the outside air 2 in the space to be air-conditioned countercurrent heat exchanger 6 of the cooling device 1.
  • the reason for this is provided in the outside air duct 9 of the cooling device 1 between the two countercurrent heat exchangers 5, 6 cooling register 12, by means of which the outside air, for example, as explained above, from 33.5 degrees C to 12.0 degrees C can be cooled down.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Central Air Conditioning (AREA)

Abstract

The invention relates to a cooling device (1) for outside air (2) which is used for production of a supply air flow (3) and has a comparatively high temperature and a comparatively high relative humidity, which cooling device is designed so that exhaust air (4) is employed in the cooling device (1) for cooling the outside air (2) used for production of the supply air flow (3). In order to produce a perceptible increase in the efficiency of the cooling device (1) in specific climatic conditions with comparatively low design and technology costs, according to the invention the cooling device (1) has two plate heat exchangers (5, 6) which are disposed one after the other and through which the outside air (2) and the exhaust air (4) flow in succession. A coolant (12) by means of which the outside air (2) can be cooled and moisture can be extracted from the outside air (2) is disposed in the flow path of the outside air (2) between an outside air outlet (10) of the plate heat exchanger (5) through which the outside air (2) first flows and an outside air inlet (11) of the plate heat exchanger (6) through which the outside air (2) then flows.

Description

- IL  - IL
„Kühlvorrichtung für zur Erzeugung eines Zuluftstroms verwendete Außenluft und Verfahren zur Kühlung derselben" "Cooling device for outside air used to generate a supply air flow and method of cooling same"
Die Erfindung bezieht sich auf eine Kühlvorrichtung für zur Erzeugung eines Zuluftstroms verwendete Außenluft, die eine vergleichsweise hohe Temperatur und eine vergleichsweise hohe relative Luftfeuchtigkeit aufweist, in welcher Kühlvorrichtung die zur Erzeugung des Zuluftstroms verwendete Außen- luft mittels Abluft kühlbar ist. The invention relates to a cooling device for outside air used for generating a supply air, which has a comparatively high temperature and a relatively high relative humidity, in which cooling device the outside air used to generate the supply air can be cooled by means of exhaust air.
In bestimmten geografischen Regionen, in denen vergleichsweise hohe Außentemperaturen üblicherweise vorliegen, die darüber hinaus vergleichsweise häufig mit hohen Luftfeuchtigkei- ten einhergehen, liegt die Temperatur der Umgebungs- bzw. Außenluft oberhalb derjenigen Temperatur, die für den zu klimatisierenden Raum angestrebt wird. Der Unterschied zwischen der Außenlufttemperatur und der im zu klimatisierenden Raum angestrebten Temperatur kann dabei sehr hoch sein. In certain geographic regions where comparatively high outside temperatures are usually present and, moreover, are comparatively frequently associated with high humidity, the temperature of the ambient or outside air is above that desired for the room to be conditioned. The difference between the outside air temperature and the desired temperature in the room to be conditioned can be very high.
Der Erfindung liegt die Aufgabe zugrunde, die eingangs geschilderte Kühlvorrichtung für zur Erzeugung eines Zuluftstroms verwendete Außenluft derart weiterzubilden, dass sie mit einem vergleichsweise hohen Wirkungsgrad für die Klimati- sierung von Räumen eingesetzt werden kann, wobei der technisch-konstruktive Aufwand für die Kühlvorrichtung vergleichsweise gering sein soll. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Kühlvorrichtung zwei aufeinanderfolgend angeordnete Plattenwärmetauscher aufweist, die von der Außenluft bzw. der Abluft nacheinander durchströmt werden, und dass zwischen einem Au- ßenluftausgang des von der Außenluft zuerst durchströmten Plattenwärmetauschers und einem Außenlufteingang des von der Außenluft danach durchströmten Plattenwärmetauschers im Strömungsweg der Außenluft ein Kühlmittel angeordnet ist, mittels dem die Außenluft abkühlbar ist und der Außenluft Feuchtigkeit entziehbar ist. Mit der erfindungsgemäß ausgestalteten Kühlvorrichtung ist es möglich, auch bei sehr hohen Außentemperaturen und vergleichsweise hohen relativen Luftfeuchtigkeiten der Außenluft mit einem vergleichsweise geringen technisch-konstruktiven Aufwand eine jedweden Anforderungsprofilen genügende Klimatisierung von Räumen bzw. Innenräumen zu gewährleisten. Im Vergleich zu herkömmlichen derartigen Kühlvorrichtungen kann im Falle der Erfindung der energetische und weitere wirtschaftliche Aufwand für den Betrieb erheblich reduziert werden. Die von den Kühlregistern zu realisierende Kühl- und Entfeuchtungsleistung kann reduziert werden, so dass Kühlregister mit geringeren Kapazitäten und entsprechend geringeren Betriebs- und Energiekosten eingesetzt werden können. Auf Nachheizregister, mittels denen in aus dem Stand der Technik bekannten herkömmlichen derartigen Kühlvorrichtungen die Luft stromab der Kühlregister wieder auf ein angeforder- tes Temperaturniveau aufgeheizt wird, kann im Falle der erfindungsgemäßen Kühlvorrichtung verzichtet werden. Hierdurch können die Anschaffungs-, Betriebs- und Energiekosten der er- findungsgemäßen Kühlvorrichtungen weiter reduziert werden. Die Nacherwärmung der Zuluft stromab des Kühlregisters wird im Falle der erfindungsgemäßen Kühlvorrichtung ohne Einsatz von Energiekosten verursachenden Aggregaten realisiert. The invention is based on the object of further developing the initially described cooling device for outside air used for generating a supply air flow in such a way that it has a comparatively high efficiency for air conditioning. tion of rooms can be used, the technical design cost of the cooling device should be relatively low. This object is achieved in that the cooling device comprises two successively arranged plate heat exchanger, which are flowed through by the outside air and the exhaust air in succession, and that between an outdoor ßenluftausgang of the first air flowed through by the outside air plate heat exchanger and an outside air inlet of the outside air thereafter flowed through plate heat exchanger in the flow path of the outside air, a coolant is arranged, by means of which the outside air can be cooled and the outside air moisture is withdrawn. With the inventively designed cooling device, it is possible, even at very high ambient temperatures and relatively high relative humidities of the outside air with a comparatively low technical and design effort to ensure any requirement profiles sufficient air conditioning of rooms or interiors. Compared to conventional cooling devices of this kind, the energy and further economic outlay for operation can be considerably reduced in the case of the invention. The cooling and dehumidification performance to be realized by the cooling registers can be reduced so that cooling coils with lower capacities and correspondingly lower operating and energy costs can be used. On Nachheizregister, by means of which in known from the prior art conventional such cooling devices, the air is heated downstream of the cooling coil back to a tern tem- tese temperature level, can be dispensed with in the case of the cooling device according to the invention. As a result, the acquisition, operating and energy costs of the Cooling devices according to the invention can be further reduced. The reheating of the supply air downstream of the cooling register is realized in the case of the cooling device according to the invention without the use of energy-costing aggregates.
Bei bestimmten Anforderungsprofilen kann es zweckmäßig sein, dass die Kühlvorrichtung mehr als zwei, z.B. drei, aufeinanderfolgend angeordnete Plattenwärmetauscher aufweist, wobei zumindest zwischen einem einen Außenluftausgang aufweisenden Plattenwärmetauscher und einem einen Außenlufteingang aufweisenden, darauf folgenden Plattenwärmetauscher ein Kühlmittel angeordnet ist. Selbstverständlich können auch mehrere Kühlmittel in entsprechender Anordnung vorgesehen sein. Das Kühlmittel lässt sich vorteilhaft in Form eines Kühlregisters gestalteten, wobei mittels eines derartigen Kühlregisters der durchströmende Luftstrom sowohl abkühlbar als auch in seinem Feuchtigkeitsgehalt reduzierbar ist. Gemäß einer vorteilhaften Ausführungsform der erfindungsgemäßen Kühlvorrichtung ist die Außenluft im Kühlmittel von einer Temperatur, die, vorzugsweise deutlich, oberhalb der Temperatur liegt, mit der die Abluft in den im Strömungsweg der Außenluft auf das Kühlmittel folgenden Plattenwärmetauscher, in dem die Außenluft mittels der Abluft nacherwärmbar ist, eintritt, auf eine Temperatur abkühlbar, die, vorzugsweise deutlich, unterhalb der Temperatur liegt, mit der die Abluft in den im Strömungsweg der Außenluft auf das Kühlmittel folgenden Plattenwärmetauscher eintritt, wobei die Außenluft in dem im Strömungsweg der Außenluft stromauf des Kühlmittels angeordneten Plattenwärmetauscher mittels der Abluft vorkühlbar ist . Vorteilhaft sind die Plattenwärmetauscher der Kühlvorrichtung als Gegenstromwärmetauscher ausgebildet. Alternativ ist es möglich, die Plattenwärmetauscher als For certain requirement profiles, it may be expedient that the cooling device has more than two, for example, three, successively arranged plate heat exchanger, wherein at least between a plate having an outdoor air outlet plate heat exchanger and a outside air inlet, subsequent plate heat exchanger, a coolant is arranged. Of course, a plurality of coolants can be provided in a corresponding arrangement. The coolant can be advantageously designed in the form of a cooling register, wherein by means of such a cooling register of the flowing air flow is both cooled and reduced in its moisture content. According to an advantageous embodiment of the cooling device according to the invention, the outside air in the coolant from a temperature which, preferably significantly, above the temperature at which the exhaust air in the following in the flow path of the outside air to the coolant plate heat exchanger, in which the outside air nacherwärmbar by means of the exhaust air is, cools down to a temperature which, preferably significantly, below the temperature at which the exhaust air enters the following in the flow path of the outside air to the coolant plate heat exchanger, wherein the outside air in the arranged in the flow path of the outside air upstream of the coolant plate heat exchanger is pre-cooled by means of the exhaust air. Advantageously, the plate heat exchanger of the cooling device are designed as countercurrent heat exchangers. Alternatively, it is possible to use the plate heat exchanger as
Kreuzstromwärmetauscher auszugestalten . Design cross-flow heat exchanger.
Als weitere Möglichkeit kann es bei bestimmten Anforderungsprofilen zweckmäßig sein, zumindest einen Plattenwärmetau- scher als Gegenstromwärmetauscher und zumindest einen Plattenwärmetauscher als Kreuzstromwärmetauscher auszugestalten. As a further possibility, it may be expedient for certain requirement profiles to design at least one plate heat exchanger as a countercurrent heat exchanger and at least one plate heat exchanger as a crossflow heat exchanger.
Bei dem erfindungsgemäßen Verfahren zur Kühlung zur Erzeugung eines Zuluftstroms verwendete Außenluft, die eine vergleichs- weise hohe Temperatur und eine vergleichsweise hohe relative Luftfeuchtigkeit aufweist, wird die zur Erzeugung des Zuluftstroms verwendete Außenluft mittels Abluft gekühlt. Um die der Erfindung zugrunde liegende Aufgabe hinsichtlich des Verfahrens zu lösen, wird vorgeschlagen, dass die Außenluft auf- einanderfolgend angeordnete Plattenwärmetauscher der Kühlvorrichtung nacheinander durchströmt, dass die Abluft die aufeinanderfolgend angeordneten Plattenwärmetauscher der Kühlvorrichtung in Bezug auf die Strömungsrichtung der Außenluft gegenläufig nacheinander durchströmt, und dass die bzw. der Außenluft zwischen zwei von ihr durchströmten Plattenwärmetauschern mittels eines Kühlmittels, vorzugsweise eines In the method according to the invention for cooling to produce a supply air flow outside air used, which has a comparatively high temperature and a relatively high relative humidity, the outside air used to generate the supply air is cooled by means of exhaust air. In order to solve the problem underlying the invention with respect to the method, it is proposed that the outside air successively flows through the plate heat exchanger of the cooling device successively arranged, that the exhaust air flows through the successively arranged plate heat exchanger of the cooling device in opposite directions in succession, and that the or the outside air between two plate heat exchangers through which it flows by means of a coolant, preferably one
Kühlregisters, abgekühlt bzw. Feuchtigkeit entzogen wird. Cooling register, cooled or deprived of moisture.
Vorteilhaft wird die Außenluft in dem zwischen zwei Platten- Wärmetauschern angeordneten Kühlmittel von einer Temperatur, die, vorzugsweise deutlich, oberhalb der Temperatur liegt, mit der die Abluft in den im Strömungsweg der Außenluft auf das Kühlmittel folgenden Plattenwärmetauscher, in dem die Außenluft mittels der Abluft nacherwärmt wird, eintritt, auf eine Temperatur abgekühlt, die, vorzugsweise deutlich, unterhalb der Temperatur liegt, mit der die Abluft in den im Strö- mungsweg der Außenluft auf das Kühlmittel folgenden Plattenwärmetauscher eintritt, wobei die Außenluft in dem im Strömungsweg der Außenluft stromauf des Kühlmittels angeordneten Plattenwärmetauscher mittels der Abluft vorgekühlt wird. Erfindungsgemäß wird die Abluft bzw. wird der Abluftstrom genutzt, um die Zuluft stromab des Kühlregisters nachzuerwärmen und die Zu- bzw. Außenluft im der Umgebung zugewandten Plattenwärmetauscher vorzukühlen. Im Folgenden wird die Erfindung anhand einer Ausführungsform unter Bezugnahme auf die Zeichnung näher erläutert, in deren einziger Figur eine Prinzipdarstellung einer Ausführungsform einer erfindungsgemäßen Kühlvorrichtung gezeigt ist. Eine in der einzigen Figur gezeigte Kühlvorrichtung 1 ist dazu vorgesehen, bei klimatischen Verhältnissen eingesetzt zu werden, bei denen sowohl die Temperatur als auch die relative Luftfeuchtigkeit der Umgebungs- bzw. Außenluft vergleichsweise hoch sind. Derartige klimatische Verhältnisse liegen bei- spielsweise in den Staaten am Arabischen bzw. Persischen Golf vor. Auch in weiteren Gebieten, die dem tropischen oder subtropischen Klimabereich zuzuordnen sind, können derartige klimatische Verhältnisse vorliegen. Mittels der in der einzigen Figur gezeigten Ausführungsform der Kühlvorrichtung 1 soll Außenluft 2 so gekühlt bzw. konditioniert werden, dass ein aus dieser Außenluft 2 erzeugter Zuluftstrom 3, der aus der Kühlvorrichtung 1 in einen zu klimatisierenden Raum ein- tritt, eine gewünschte Temperatur und eine gewünschte relative Luftfeuchtigkeit aufweist. Advantageously, the outside air in the coolant arranged between two plate heat exchangers is at a temperature which, preferably clearly, is above the temperature with which the exhaust air flows into the flow path of the outside air the coolant following plate heat exchanger, in which the outside air is reheated by means of the exhaust air enters, cooled to a temperature which, preferably significantly, below the temperature at which the exhaust air enters in the flow path of the outside air following the coolant plate heat exchanger wherein the outside air is pre-cooled in the plate heat exchanger arranged upstream of the coolant in the flow path of the outside air by means of the exhaust air. According to the invention, the exhaust air or the exhaust air flow is used to reheat the supply air downstream of the cooling register and to pre-cool the supply and outdoor air in the surrounding plate heat exchanger. In the following, the invention will be explained in more detail by means of an embodiment with reference to the drawing, in the sole figure of which a schematic diagram of an embodiment of a cooling device according to the invention is shown. A cooling device 1 shown in the single figure is intended to be used in climatic conditions in which both the temperature and the relative humidity of the ambient and outdoor air are comparatively high. Such climatic conditions occur, for example, in the states of the Arabian and Persian Gulfs. Also in other areas, which are assigned to the tropical or subtropical climatic area, such climatic conditions may exist. By means of the embodiment of the cooling device 1 shown in the single figure, outside air 2 is to be cooled or conditioned such that a supply air flow 3 generated from this outside air 2, which flows from the cooling device 1 into a space to be air-conditioned. occurs, has a desired temperature and a desired relative humidity.
Da bei den vorstehend genannten klimatischen Verhältnissen die Temperatur von Abluft 4, die aus dem zu klimatisierenden Raum herausgeführt werden soll, üblicherweise und darüber hinaus vergleichsweise deutlich kühler ist als die Temperatur der in die Kühlvorrichtung 1 eintretenden Außenluft 2, wird die Abluft 4 genutzt, um die Außenluft 2 in der Kühlvorrich- tung 1 abzukühlen. Since in the abovementioned climatic conditions, the temperature of exhaust air 4, which is to be led out of the room to be conditioned, usually and moreover comparatively much cooler than the temperature of entering the cooler 1 outside air 2, the exhaust air 4 is used to to cool the outside air 2 in the cooling device 1.
Hierzu weist die Kühlvorrichtung 1 zwei in der gezeigten Ausführungsform als Gegenstromwärmetauscher 5, 6 ausgebildete Plattenwärmetauscher auf. Die beiden Gegenstromwärmetauscher 5, 6 sind sowohl in Strömungsrichtung der Außenluft 2 als auch in Strömungsrichtung der Abluft 4 hintereinander angeordnet, wobei die Strömungsrichtung der Außenluft 2 der Strömungsrichtung der Abluft 4 entgegengesetzt ist, so dass die Abluft 4 bei ihrem Eintritt in die Kühlvorrichtung aus dem zu klimatisierenden Raum heraus in den Gegenstromwärmetauscher 6 eintritt, der von der Außenluft 2 bzw. dem Zuluftstrom 3 verlassen wird, wenn die Außenluft 2 bzw. der Zuluftstrom 3 in den zu klimatisierenden Raum eintritt. Die Abluft 4 strömt, wie durch die entsprechenden Pfeile 4 angegeben, aus dem zu klimatisierenden Raum in die Kühlvorrichtung 1, durch den Gegenstromwärmetauscher 6, stromab des Gegenstromwärmetauschers 6 durch einen Abluftkanal 7 der Kühlvorrichtung 1 und dann durch den Gegenstromwärmetauscher 5. Nach Austritt aus dem Gegenstromwärmetauscher 5 tritt die Abluft 4 als Fortluftstrom 8 aus der Kühlvorrichtung 1 in die Umgebung aus . Entsprechend durchströmt die Außenluft 2 innerhalb der Kühl¬ vorrichtung 1 zunächst deren Gegenstromwärmetauscher 5, stromab des Gegenstromwärmetauschers 5 einen Außenluftkanal 9 der Kühlvorrichtung 1 und dann den dem zu klimatisierendenFor this purpose, the cooling device 1 has two in the embodiment shown as countercurrent heat exchanger 5, 6 formed plate heat exchanger. The two countercurrent heat exchangers 5, 6 are arranged one behind the other both in the flow direction of the outside air 2 and in the flow direction of the exhaust air 4, wherein the flow direction of the outside air 2 is opposite to the flow direction of the exhaust air 4, so that the exhaust air 4 as it enters the cooling device from the to room to be conditioned out enters the countercurrent heat exchanger 6, which is exited by the outside air 2 and the supply air stream 3 when the outside air 2 and the supply air stream 3 enters the room to be conditioned. The exhaust air 4 flows, as indicated by the corresponding arrows 4, from the room to be conditioned in the cooling device 1, through the countercurrent heat exchanger 6, downstream of the countercurrent heat exchanger 6 through an exhaust duct 7 of the cooling device 1 and then through the countercurrent heat exchanger 5. After emerging from the Countercurrent heat exchanger 5 exits the exhaust air 4 as exhaust air stream 8 from the cooling device 1 in the environment. Accordingly flows through the outside air 2 inside the cooling ¬ device 1, first their countercurrent heat exchanger 5, downstream of the countercurrent heat exchanger 5, an outside air duct 9 of the cooling device 1 and then the air to be conditioned
Raum zugewandten Gegenstromwärmetauscher 6, bevor sie als Zu- luftstrom 3 in den zu klimatisierenden Raum eintritt. Room facing countercurrent heat exchanger 6 before it enters as a supply air stream 3 in the room to be air conditioned.
Im Außenluftkanal 9 der Kühlvorrichtung 1 ist zwischen einem Außenluftausgang 10 des der Umgebung zugewandten Gegenstromwärmetauschers 5 der Kühlvorrichtung 1 und einem Außen- lufteingang 11 des dem zu klimatisierenden Raum zugewandten Gegenstromwärmetauschers 6 der Kühlvorrichtung 1 ein Kühlregister 12 angeordnet, mittels dem die Außenluft 2 abkühlbar ist und mittels dem der Außenluft 2 Luftfeuchtigkeit entziehbar ist. Aufgrund des in den vorstehend erwähnten und beschriebenen klimatischen Bereichen vorgegebenen Anforderungsprofils der Kühlvorrichtung 1 ist dieses Kühlregister 12 so ausgestaltet und konzipiert, dass die Außenluft 2 im Außen- luftkanal 9 der Kühlvorrichtung 1 vergleichsweise stark abkühlbar ist. Bei ihrem Eintritt in das Kühlregister 12 liegt die Temperatur der Außenluft 2 im dargestellten Ausführungsbeispiel deutlich oberhalb derjenigen Temperatur, mit der die Abluft 4 in den dem zu klimatisierenden Raum zugewandten Ge- genstromwärmetauscher 6 eintritt. Nach Durchtritt durch dasIn the outside air duct 9 of the cooling device 1, a cooling register 12 is arranged between an outside air outlet 10 of the countercurrent heat exchanger 5 of the cooling device 1 facing the environment and an outside air inlet 11 of the countercurrent heat exchanger 6 of the cooling device 1 facing the room to be cooled, by means of which the outside air 2 can be cooled and by means of the outside air 2 humidity is withdrawn. On the basis of the requirement profile of the cooling device 1 specified in the above-mentioned and described climatic regions, this cooling register 12 is configured and designed so that the outside air 2 in the outside air duct 9 of the cooling device 1 can be cooled comparatively strongly. When entering the cooling register 12, the temperature of the outside air 2 in the exemplary embodiment shown is significantly above that temperature with which the exhaust air 4 enters the counterflow heat exchanger 6 facing the space to be conditioned. After passing through the
Kühlregister 12 liegt die Temperatur der Außenluft 2 deutlich unterhalb der Temperatur der in den dem zu klimatisierenden Raum zugewandten Gegenstromwärmetauscher 6 eintretenden Abluft 4. Cooling register 12, the temperature of the outside air 2 is well below the temperature of the exhaust air 4 entering the room to be air-conditioned countercurrent heat exchanger 6.
Im Falle der in der Figur gezeigten Ausführungsform der Kühlvorrichtung 1 tritt die Außenluft 2 mit einem Strömungsvolu- men von 850 m3/h in die Kühlvorrichtung 1 ein. Entsprechend tritt die Abluft 4 mit dem gleichen Strömungsvolumen von der anderen Seite her in die Kühlvorrichtung 1 ein. In the case of the embodiment of the cooling device 1 shown in the figure, the outside air 2 enters with a flow volume. of 850 m 3 / h in the cooling device 1 a. Accordingly, the exhaust air 4 enters the cooling device 1 with the same flow volume from the other side.
Die Temperatur der in die Kühlvorrichtung 1 eintretenden Au- ßenluft 2 beträgt z.B. 42 Grad C, ihre relative Luftfeuchtigkeit 60 %. Der Feuchtigkeitsgehalt der Außenluft 2 beträgt bei Eintritt in die Kühlvorrichtung 1 31,75 g/kg. The temperature of the outside air 2 entering the cooling device 1 is e.g. 42 degrees C, their relative humidity 60%. The moisture content of the outside air 2 when entering the cooling device 1 is 31.75 g / kg.
Im der Umgebung zugewandten Gegenstromwärmetauscher 5 der Kühlvorrichtung 1 wird die Außenluft 2 auf eine Temperatur von 33,5 Grad C abgekühlt. Die relative Luftfeuchtigkeit der Außenluft 2 erhöht sich im Gegenstromwärmetauscher 5 auf 76,2 %, der Feuchtigkeitsgehalt der Außenluft 2 fällt im Gegenstromwärmetauscher 5 auf 25,18 g/kg. Im Kühlregister 12, das zwischen dem Außenluftausgang 10 des in der Figur linken Gegenstromwärmetauschers 5 und dem Außenlufteingang 11 des in der Figur rechten Gegenstromwärmetauschers 6 angeordnet ist, wird die Außenluft 2 auf eine Temperatur von 12,0 Grad C abgekühlt. Die relative Luftfeuchtigkeit erhöht sich auf 99,0 %, der Feuchtigkeitsgehalt fällt auf 8,64 g/kg. In the environment facing countercurrent heat exchanger 5 of the cooling device 1, the outside air 2 is cooled to a temperature of 33.5 degrees C. The relative humidity of the outside air 2 increases in the countercurrent heat exchanger 5 to 76.2%, the moisture content of the outside air 2 falls in countercurrent heat exchanger 5 to 25.18 g / kg. In the cooling register 12, which is arranged between the outside air outlet 10 of the left countercurrent heat exchanger 5 in the figure and the outside air inlet 11 of the right countercurrent heat exchanger 6 in the figure, the outside air 2 is cooled to a temperature of 12.0 degrees C. The relative humidity increases to 99.0%, the moisture content drops to 8.64 g / kg.
Im dem zu klimatisierenden Raum zugewandten Gegenstromwärmetauscher 6 der Kühlvorrichtung 1 wird die Außenluft 2 auf eine Temperatur von 21,7 Grad C erwärmt. Die relative Luft- feuchtigkeit beträgt stromab des Gegenstromwärmetauschers 6 53,5 %, der Feuchtigkeitsgehalt der Außenluft 2 beträgt unverändert 8,64 g/kg. Mit diesen Eigenschaften tritt die Außenluft 2 als Zuluftstrom 3 in den zu klimatisierenden Raum ein . In the counter-flow heat exchanger 6 of the cooling device 1 facing the room to be conditioned, the outside air 2 is heated to a temperature of 21.7 degrees C. The relative humidity is 53.5% downstream of the countercurrent heat exchanger 6, the moisture content of the outside air 2 remains unchanged at 8.64 g / kg. With these properties, the outside air 2 enters as a supply air stream 3 in the room to be conditioned.
Die Abluft 4 wird beim Durchströmen des dem zu klimatisierenden Raum zugewandten Gegenstromwärmetauschers 6 der Kühlvor- richtung 1 von 24 Grad C auf 14,5 Grad C abgekühlt. Entsprechend erhöht sich die relative Luftfeuchtigkeit der Außenluft 4 von 55 % auf 99,2 %. Der Feuchtigkeitsgehalt der Abluft 4 beträgt stromab des Gegenstromwärmetauschers 6 unverändert 10,24 g/kg. As it flows through the countercurrent heat exchanger 6 facing the room to be conditioned, the exhaust air 4 Direction 1 of 24 degrees C cooled to 14.5 degrees C. Accordingly, the relative humidity of the outside air 4 increases from 55% to 99.2%. The moisture content of the exhaust 4 downstream of the countercurrent heat exchanger 6 is unchanged at 10.24 g / kg.
Nach Durchströmen des Luftkanals 7 gerät die Abluft 4 in den der Umgebung zugewandten Gegenstromwärmetauscher 5 der Kühlvorrichtung 1. In diesem wird die Abluft 4 auf eine Tempera- tur von 39,3 Grad C erwärmt; die relative Luftfeuchtigkeit reduziert sich entsprechend auf 23,1 %, wohingegen der Feuchtigkeitsgehalt weiterhin 10,24 g/kg beträgt. Mit diesen Eigenschaften tritt die Abluft 4 aus dem Gegenstromwärmetauscher 5 der Kühlvorrichtung 1 aus und verlässt dann als Fort- luftstrom 8 die Kühlvorrichtung 1. After flowing through the air channel 7, the exhaust air 4 is in the counterflow heat exchanger 5 facing the environment of the cooling device 1. In this, the exhaust air 4 is heated to a temperature of 39.3 degrees C; the relative humidity is correspondingly reduced to 23.1%, while the moisture content remains 10.24 g / kg. With these properties, the exhaust air 4 exits the countercurrent heat exchanger 5 of the cooling device 1 and then leaves the cooling device 1 as the outgoing air stream 8.
Während im der Umgebung zugewandten Gegenstromwärmetauscher 5 der Kühlvorrichtung 1 die Außenluft 2 durch die Abluft 4 gekühlt wird, wird im dem zu klimatisierenden Raum zugewandten Gegenstromwärmetauscher 6 der Kühlvorrichtung 1 die Abluft 4 durch die Außenluft 2 gekühlt. Ursächlich hierfür ist das im Außenluftkanal 9 der Kühlvorrichtung 1 zwischen den beiden Gegenstromwärmetauschern 5, 6 vorgesehene Kühlregister 12, mittels dem die Außenluft beispielsweise, wie vorstehend er- läutert, von 33,5 Grad C auf 12,0 Grad C herunterkühlbar ist. While in the environment facing countercurrent heat exchanger 5 of the cooling device 1, the outside air 2 is cooled by the exhaust air 4, the exhaust air 4 is cooled by the outside air 2 in the space to be air-conditioned countercurrent heat exchanger 6 of the cooling device 1. The reason for this is provided in the outside air duct 9 of the cooling device 1 between the two countercurrent heat exchangers 5, 6 cooling register 12, by means of which the outside air, for example, as explained above, from 33.5 degrees C to 12.0 degrees C can be cooled down.

Claims

A T E N T A N S P R Ü C H E A T E N T A N S P R U C H E
Kühlvorrichtung für zur Erzeugung eines Zuluftstroms (3) verwendete Außenluft (2), die eine vergleichsweise hohe Temperatur und eine vergleichsweise hohe relative Luftfeuchtigkeit aufweist, in welcher Kühlvorrichtung (1) die zur Erzeugung des Zuluftstroms (3) verwendete Außenluft (2) mittels Abluft (4) kühlbar ist, dadurch gekennzeichnet, dass die Kühlvorrichtung (1) zwei aufeinanderfolgend angeordnete Plattenwärmetauscher (5, 6) aufweist, die von der Außenluft (2) bzw. der Abluft (4) nacheinander durchströmt werden, und dass zwischen einem Außenluftausgang (10) des von der Außenluft (2) zuerst durchströmten Plattenwärmetauschers (5) und einem Außenlufteingang (11) des von der Außenluft (2) danach durchströmten Plattenwärmetauschers (6) im Strömungsweg der Außenluft (2) ein Kühlmittel (12) angeordnet ist, mittels dem die Außenluft (2) abkühlbar und der Außenluft (2) Feuchtigkeit entziehbar ist. Cooling device for outside air (2) used to generate a supply air flow (3), which has a comparatively high temperature and a comparatively high relative humidity, in which cooling device (1) the outside air (2) used to generate the supply air flow (3) by means of exhaust air ( 4) can be cooled, characterized in that the cooling device (1) has two successively arranged plate heat exchangers (5, 6), through which the outside air (2) or the exhaust air (4) flows one after the other, and that between an outside air outlet (10 ) of the plate heat exchanger (5) through which the outside air (2) first flows and an outside air inlet (11) of the plate heat exchanger (6) through which the outside air (2) then flows, a coolant (12) is arranged in the flow path of the outside air (2), by means of which the outside air (2) can be cooled and moisture can be removed from the outside air (2).
Kühlvorrichtung nach Anspruch 1, die mehr als zwei, z.B. drei, aufeinanderfolgend angeordnete Plattenwärmetauscher (5, 6) aufweist, wobei zumindest zwischen einem einen Außenluftausgang (10) aufweisenden Plattenwärmetauscher (5) und einem einen Außenlufteingang (11) aufweisenden Plattenwärmetauscher (6) ein Kühlmittel (12) angeordnet ist. Cooling device according to claim 1, which has more than two, for example three, successively arranged plate heat exchangers (5, 6), with at least one plate heat exchanger (5) having an outside air outlet (10) and a plate heat exchanger (6) having an outside air inlet (11). Coolant (12) is arranged.
Kühlvorrichtung nach Anspruch 1 oder 2, bei der das Kühlmittel als Kühlregister (12) ausgebildet ist. Cooling device according to claim 1 or 2, in which the coolant is designed as a cooling register (12).
Kühlvorrichtung nach einem der Ansprüche 1 bis 3, bei der die Außenluft (2) im Kühlmittel (12) von einer Tempera- tur, die, vorzugsweise deutlich, oberhalb der Temperatur liegt, mit der die Abluft (4) in den im Strömungsweg der Außenluft (2) auf das Kühlmittel (12) folgenden Plattenwärmetauscher (6) , in dem die Außenluft (2) mittels der Abluft (4) nacherwärmbar ist, eintritt, auf eine Temperatur abkühlbar ist, die, vorzugsweise deutlich, unterhalb der Temperatur liegt, mit der die Abluft (4) in den im Strömungsweg der Außenluft (2) auf das Kühlmittel (12) folgenden Plattenwärmetauscher (6) eintritt, wobei die Außenluft (2) in dem im Strömungsweg der Außenluft Cooling device according to one of claims 1 to 3, in which the outside air (2) in the coolant (12) has a temperature ture, which is, preferably significantly, above the temperature at which the exhaust air (4) enters the plate heat exchanger (6) following the coolant (12) in the flow path of the outside air (2), in which the outside air (2) is fed in by means of the exhaust air (4) can be reheated, can be cooled to a temperature which is, preferably significantly, below the temperature at which the exhaust air (4) enters the plate heat exchanger (6) following the coolant (12) in the flow path of the outside air (2). ) occurs, with the outside air (2) in the flow path of the outside air
(2) stromauf des Kühlmittels (12) angeordneten Plattenwärmetauscher (5) mittels der Abluft (4) vorkühlbar ist. (2) plate heat exchanger (5) arranged upstream of the coolant (12) can be pre-cooled by means of the exhaust air (4).
Kühlvorrichtung nach einem der Ansprüche 1 bis 4, bei der die Plattenwärmetauscher (5, 6) als Gegenstromwärmetau- scher (5, 6) ausgebildet sind. Cooling device according to one of claims 1 to 4, in which the plate heat exchangers (5, 6) are designed as countercurrent heat exchangers (5, 6).
Kühlvorrichtung nach einem der Ansprüche 1 bis 4, bei der die Plattenwärmetauscher als Kreuzstromwärmetauscher ausgebildet sind. Cooling device according to one of claims 1 to 4, in which the plate heat exchangers are designed as cross-flow heat exchangers.
Kühlvorrichtung nach einem der Ansprüche 1 bis 4, bei der zumindest ein Plattenwärmetauscher als Gegenstromwärme- tauscher und zumindest ein Plattenwärmetauscher als Cooling device according to one of claims 1 to 4, in which at least one plate heat exchanger acts as a countercurrent heat exchanger and at least one plate heat exchanger acts as a
Kreuzstromwärmetauscher ausgebildet ist. Cross-flow heat exchanger is formed.
Verfahren zur Kühlung zur Erzeugung eines ZuluftstromsCooling method for generating a supply air flow
(3) verwendeter Außenluft (2), die eine vergleichsweise hohe Temperatur und eine vergleichsweise hohe relative Luftfeuchtigkeit aufweist, bei dem die zur Erzeugung des Zuluftstroms (3) verwendete Außenluft (2) mittels Abluft(3) used outside air (2), which has a comparatively high temperature and a comparatively high relative humidity, in which the outside air (2) used to generate the supply air flow (3) by means of exhaust air
(4) gekühlt wird, dadurch gekennzeichnet, dass die Außen- luft (2) aufeinanderfolgend angeordnete Plattenwärmetauscher (5, 6) der Kühlvorrichtung (1) nacheinander durchströmt, dass die Abluft (4) die aufeinanderfolgend angeordneten Plattenwärmetauscher (5, 6) der Kühlvorrichtung (1) in Bezug auf die Strömungsrichtung der Außenluft (2) gegenläufig nacheinander durchströmt, und dass die bzw. der Außenluft (2) zwischen zwei von ihr durchströmten Plattenwärmetauschern (5, 6) mittels eines Kühlmittels, vorzugsweise eines Kühlregisters (12), abgekühlt bzw. Feuchtigkeit entzogen wird. (4) is cooled, characterized in that the external Air (2) flows through successively arranged plate heat exchangers (5, 6) of the cooling device (1) so that the exhaust air (4) flows through the successively arranged plate heat exchangers (5, 6) of the cooling device (1) in relation to the flow direction of the outside air (2). flows through one after the other in opposite directions, and that the outside air (2) is cooled or moisture is removed between two plate heat exchangers (5, 6) through which it flows by means of a coolant, preferably a cooling register (12).
Verfahren nach Anspruch 8, bei dem die Außenluft (2) in dem zwischen zwei Plattenwärmetauschern (5, 6) angeordneten Kühlmittel (12) von einer Temperatur, die, vorzugsweise deutlich, oberhalb der Temperatur liegt, mit der die Abluft (4) in den im Strömungsweg der Außenluft (2) auf das Kühlmittel (12) folgenden Plattenwärmetauscher (6), in dem die Außenluft (2) mittels der Abluft (4) nacherwärmt wird, eintritt, auf eine Temperatur abgekühlt wird, die, vorzugsweise deutlich, unterhalb der Temperatur liegt, mit der die Abluft (4) in den im Strömungsweg der Außenluft (2) auf das Kühlmittel (12) folgenden Plattenwärmetauscher (6) eintritt, wobei die Außenluft (2) in dem im Strömungsweg der Außenluft (2) stromauf des Kühlmittels (12) angeordneten Plattenwärmetauscher (5) mittels der Abluft (4) vorgekühlt wird. Method according to claim 8, in which the outside air (2) in the coolant (12) arranged between two plate heat exchangers (5, 6) has a temperature which is, preferably significantly, above the temperature at which the exhaust air (4) enters the in the flow path of the outside air (2) to the coolant (12) following the plate heat exchanger (6), in which the outside air (2) is reheated by means of the exhaust air (4), enters and is cooled to a temperature which, preferably significantly, is below The temperature at which the exhaust air (4) enters the plate heat exchanger (6) following the coolant (12) in the flow path of the outside air (2), the outside air (2) in the flow path of the outside air (2) upstream of the coolant (12) arranged plate heat exchanger (5) is pre-cooled by means of the exhaust air (4).
PCT/EP2012/002844 2011-08-17 2012-07-06 Cooling device for outside air used for production of a supply air flow and method for cooling same WO2013023722A1 (en)

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