EP1259769B1 - Device for producing cold water for the purpose of cooling rooms - Google Patents

Device for producing cold water for the purpose of cooling rooms Download PDF

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Publication number
EP1259769B1
EP1259769B1 EP01902417A EP01902417A EP1259769B1 EP 1259769 B1 EP1259769 B1 EP 1259769B1 EP 01902417 A EP01902417 A EP 01902417A EP 01902417 A EP01902417 A EP 01902417A EP 1259769 B1 EP1259769 B1 EP 1259769B1
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EP
European Patent Office
Prior art keywords
cooling
condenser
water
evaporation cooler
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01902417A
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German (de)
French (fr)
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EP1259769A1 (en
Inventor
Horst Doerk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Menerga GmbH
Original Assignee
Menerga Apparatebau GmbH
MENERGA APPBAU GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10042828A external-priority patent/DE10042828A1/en
Application filed by Menerga Apparatebau GmbH, MENERGA APPBAU GmbH filed Critical Menerga Apparatebau GmbH
Priority to DK01902417T priority Critical patent/DK1259769T3/en
Publication of EP1259769A1 publication Critical patent/EP1259769A1/en
Application granted granted Critical
Publication of EP1259769B1 publication Critical patent/EP1259769B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
    • F28B9/06—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid with provision for re-cooling the cooling water or other cooling liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0089—Systems using radiation from walls or panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers

Definitions

  • the invention relates to a device for generating cold water for the room cooling according to the preamble of claim 1.
  • a such device is already from document DE-A-3 228 124 known.
  • the object of the invention is to provide the cooling capacity of a device at the outset mentioned type to improve with little installation and cost.
  • the task is characterized by the characteristics of the characteristic part of the Claim 1 solved.
  • the evaporative cooler be on Plate heat exchanger is made of polypropylene.
  • a further increase in cooling capacity is provided by the water condenser upstream air condenser reached in the exhaust air duct is arranged.
  • Another advantage is the increase in the exhaust air temperature and the result resulting reduction in relative humidity. This eliminates the danger the formation of condensate in the exhaust air duct is reduced. By evaporating the in of the exhaust air after the evaporative cooler are the aerosols any bacteria in it, especially Legionella pneumophila, the Livelihood deprived. It is particularly advantageous here that the Air condenser is arranged in the exhaust air duct of the evaporative cooler.
  • Another advantage is the compactness of the system. This will Energy losses from heating the cold water pipes between the individual components of the system and the usual energy consumption avoided for the pumps.
  • the device or system has a refrigerator, with a Refrigerant circuit 1, in which a compressor (compressor) 2 is arranged.
  • a condenser (condenser) 3 arranged, which is cooled by the second liquid circuit 4, the is described in more detail below.
  • the refrigerant comes from the condenser 3 via an expansion valve 5 to an evaporator 6, on which a third circuit 7 is connected.
  • the cooling power delivered by the evaporator 6 to the third circuit 7 becomes fed to a buffer 9 via a pump 8.
  • a buffer 9 is the cooling capacity of a fourth circuit 10 Cooling surface 11 supplied via a distribution system 12.
  • the capacitor 3 connected second circuit 4 is by a pump 13 through a Evaporative cooler 14 performed as a plate heat exchanger and is resistant to contamination and corrosion.
  • the Air flows through the plate heat exchanger 14 and flows through an inlet 15 arrives between the plates and into the environment via an outlet 16 is delivered. This flow is caused by a fan 17.
  • Water is introduced into the air flow via a distribution system 18 in particular sprayed, causing the cooling capacity of the air reached in the heat exchanger is increased due to the evaporative cold.
  • a pump 19 for the introduction of the water there is a pump 19 in the water supply line.
  • the Buffer 9 can be dispensed with.
  • the liquid circuit 7 then leads directly to the distribution system 12.
  • an expansion valve 5 can be a Heat exchanger 25 is used, which is flowed through by the water, which is then fed to the distribution system 18. This will make another one Enables improvement in cooling performance.
  • the liquid 21 to be cooled can either be via the heat exchanger 23 and then via the evaporator 6 of the refrigerator or through Switch valve 24 only circulate via the evaporator 6.
  • All parts of the device or system that is, all parts of the Chiller, the evaporative cooler 14 and the control and regulation and all liquids and live lines are within one Housing 20 arranged in a compact manner.
  • the housing can consist of several easy to transport units.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention relates to a device for producing cold water for the purpose of cooling rooms, especially for cooling surfaces (11) and coolers in the building equipment, especially for cool ceilings. The inventive device comprises a refrigeration machine (1) and an evaporative cooler (14) mounted upstream thereof through which liquid to be cooled and air flows. The cooling air flow of the evaporative cooler (14) can be exposed to water and the liquid to be cooled flows across a heat exchanger (23) or directly to a temporary storage (9) or directly to the consumer (11).

Description

Die Erfindung betrifft eine Vorrichtung zum Erzeugen von Kaltwasser für die Raumkühlung nach dem Oberbegriff des Anspruchs 1. Eine derartige Vorrichtung ist aus Dokument DE-A-3 228 124 schon bekannt.The invention relates to a device for generating cold water for the room cooling according to the preamble of claim 1. A such device is already from document DE-A-3 228 124 known.

Es ist bekannt, für Kühlflächen Kaltwasser durch eine Kältemaschine zu erzeugen. Hierbei ist es auch bekannt, den Kondensator bzw. Verflüssiger der Kältemaschine durch einen Wasserkreislauf zu kühlen, in dem ein Wärmeübertrager angeordnet ist, der von Luft durchströmt wird. Bekannt ist auch, dass man durch Beaufschlagung des Wärmeübertragers mit Wasser die Wärmeabfuhr verbessern kann (Nasskühlturm).It is known to use cold water through a chiller for cooling surfaces produce. Here, it is also known to the condenser or condenser Cooling machine through a water circuit in which to cool Heat exchanger is arranged, through which air flows. Is known also that by adding water to the heat exchanger Can improve heat dissipation (wet cooling tower).

Aufgabe der Erfindung ist es, die Kühlleistung einer Vorrichtung der eingangs genannten Art bei geringem Installations- und Kostenaufwand zu verbessern.The object of the invention is to provide the cooling capacity of a device at the outset mentioned type to improve with little installation and cost.

Die Aufgabe wird durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst.The task is characterized by the characteristics of the characteristic part of the Claim 1 solved.

Durch die Beaufschlagung des Wärmeübertragers mit Wasser auf der Luftseite, wird auf einfache und kostengünstige Weise die Bereitstellung der erforderlichen Kühlleistung effizienter. Dies ist insbesondere dann von Vorteil, wenn größere Kühlleistungen, wie zum Beispiel im Sommer erforderlich sind. Durch die Beaufschlagung des Wärmeübertragers mit Wasser und die dadurch bedingte Abkühlung der Luft, erfolgt die Abfuhr der Kondensationswärme auf einem niedrigem Temperaturniveau. Durch die niedrige Kondensationstemperatur arbeitet die Kältemaschine mit einer entsprechend günstigen Leistungszahl.By applying water to the heat exchanger on the air side, will provide the necessary in a simple and inexpensive manner Cooling capacity more efficient. This is particularly advantageous when larger Cooling capacities, such as required in summer. Through the Applying water to the heat exchanger and the resulting Cooling the air, the heat of condensation is removed on a low temperature level. Due to the low condensation temperature the chiller works with a correspondingly low coefficient of performance.

Vorzugsweise wird vorgeschlagen, dass der Verdunstungskühler ein Plattenwärmeübertrager aus Polypropylen ist.It is preferably proposed that the evaporative cooler be on Plate heat exchanger is made of polypropylene.

Da im Wärmeübertrager des Verdunstungskühlers mit Wasser gearbeitet wird, spielt hierbei der Werkstoff für den Plattenwärmeübertrager eine große Rolle. Mit Polypropylen wird ein Material eingesetzt, bei dem es zu keiner festen Ablagerung aufgrund der Verwendung von Wasser kommen kann.Since water is used in the heat exchanger of the evaporative cooler, The material for the plate heat exchanger plays a major role here. With Polypropylene is used as a material in which there is no solid Deposition can come due to the use of water.

Besonders vorteilhaft ist es, wenn im Kühlkreislauf der Kältemaschine vor dem Expansionsventil ein Wärmeübertrager angeordnet ist, der mit dem Wasser durchströmt ist, ehe das Wasser in den Luftstrom des Verdunstungskühlers eingebracht wird. Durch die hierdurch erzielte Abkühlung des Kältemittels vor dem Einspritzen in den Verdampfer, wird auf einfache und ökologische Weise eine weitere Verbesserung der Leistungszahl erreicht.It is particularly advantageous if in the cooling circuit of the refrigerator before Expansion valve is a heat exchanger that is arranged with the water is flowed through before the water enters the air flow of the evaporative cooler is introduced. Due to the cooling of the refrigerant achieved in this way injection into the vaporizer is simple and ecological achieved a further improvement in the coefficient of performance.

Eine weitere Erhöhung der Kühlleistung wird durch einen dem Wasserkondensator vorgeschalteten Luftkondensator erreicht, der im Fortluftkanal angeordnet ist. A further increase in cooling capacity is provided by the water condenser upstream air condenser reached in the exhaust air duct is arranged.

Ein weiterer Vorteil liegt in der Erhöhung der Fortlufttemperatur und die dadurch resultierende Absenkung der relativen Luftfeuchtigkeit. Dadurch wird die Gefahr der Kondensatbildung im Fortluftkanal verringert. Durch das Verdampfen der in der Fortluft nach dem Verdunstungskühler vorhandenen Aerosole werden den evtl. darin befindlichen Bakterien, insbesondere Legionella pneumophila, die Lebensgrundlage entzogen. Hierbei ist es besonders vorteilhaft, dass der Luftkondensator im Fortluftkanal des Verdunstungskühlers angeordnet ist.Another advantage is the increase in the exhaust air temperature and the result resulting reduction in relative humidity. This eliminates the danger the formation of condensate in the exhaust air duct is reduced. By evaporating the in of the exhaust air after the evaporative cooler are the aerosols any bacteria in it, especially Legionella pneumophila, the Livelihood deprived. It is particularly advantageous here that the Air condenser is arranged in the exhaust air duct of the evaporative cooler.

Ein weiterer Vorteil ist die Kompaktheit der Anlage. Dadurch werden Energieverluste durch Erwärmung der Kaltwasserleitungen zwischen den einzelnen Bauteilen der Anlage sowie durch den sonst üblichen Energieaufwand für die Pumpen vermieden.Another advantage is the compactness of the system. This will Energy losses from heating the cold water pipes between the individual components of the system and the usual energy consumption avoided for the pumps.

Zwei Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben. Es zeigen

Fig. 1
ein erstes Ausführungsbeispiel und
Fig. 2
ein zweites Ausführungsbeispiel.
Two embodiments of the invention are shown in the drawings and are described in more detail below. Show it
Fig. 1
a first embodiment and
Fig. 2
a second embodiment.

Die Vorrichtung bzw. Anlage weist eine Kältemaschine auf, mit einem Kältemittelkreislauf 1, in dem ein Kompressor (Verdichter) 2 angeordnet ist. In Strömungsrichtung hinter dem Kompressor 2 ist ein Kondensator (Verflüssiger) 3 angeordnet, der durch den zweiten Flüssigkeitskreislauf 4 gekühlt wird, der weiter unten näher beschrieben ist. Vom Kondensator 3 gelangt das Kältemittel über ein Expansionsventil 5 zu einem Verdampfer 6, an dem ein dritter Kreislauf 7 angeschlossen ist.The device or system has a refrigerator, with a Refrigerant circuit 1, in which a compressor (compressor) 2 is arranged. In The direction of flow behind the compressor 2 is a condenser (condenser) 3 arranged, which is cooled by the second liquid circuit 4, the is described in more detail below. The refrigerant comes from the condenser 3 via an expansion valve 5 to an evaporator 6, on which a third circuit 7 is connected.

Die vom Verdampfer 6 an den dritten Kreislauf 7 abgegebene Kühlleistung wird über eine Pumpe 8 einem Zwischenspeicher 9 zugeführt. Von dem Zwischenspeicher 9 wird über einen vierten Kreislauf 10 die Kühlleistung einer Kühlfläche 11 über ein Verteilsystem 12 zugeführt. Der an den Kondensator 3 angeschlossene zweite Kreislauf 4 wird von einer Pumpe 13 durch einen Verdunstungskühler 14 geführt, der als Plattenwärmeübertrager ausgeführt und beständig gegen Verunreinigungen sowie Korrosion ist. Der Plattenwärmeübertrager 14 ist von Luft durchströmt, die über einen Einlass 15 zwischen den Platten gelangt und über einen Auslass 16 in die Umgebung abgegeben wird. Dieses Durchströmen wird durch einen Ventilator 17 bewirkt.The cooling power delivered by the evaporator 6 to the third circuit 7 becomes fed to a buffer 9 via a pump 8. Of the Buffer 9 is the cooling capacity of a fourth circuit 10 Cooling surface 11 supplied via a distribution system 12. The capacitor 3 connected second circuit 4 is by a pump 13 through a Evaporative cooler 14 performed as a plate heat exchanger and is resistant to contamination and corrosion. The Air flows through the plate heat exchanger 14 and flows through an inlet 15 arrives between the plates and into the environment via an outlet 16 is delivered. This flow is caused by a fan 17.

Zwischen dem Einlass 15 und den Platten des Wärmeübertragers 14 wird Wasser über ein Verteilsystem 18 in den Luftstrom eingebracht insbesondere eingesprüht, wodurch die Kühlleistung der im Wärmeübertrager erreichten Luft aufgrund der Verdunstungskälte erhöht wird. Zur Einbringung des Wassers befindet sich in der Wasserzuflussleitung eine Pumpe 19.Between the inlet 15 and the plates of the heat exchanger 14 is Water is introduced into the air flow via a distribution system 18 in particular sprayed, causing the cooling capacity of the air reached in the heat exchanger is increased due to the evaporative cold. For the introduction of the water there is a pump 19 in the water supply line.

Bei Einsatz einer leistungsgeregelten Kälteanlage kann auf den Zwischenspeicher 9 verzichtet werden. Der Flüssigkeitskreislauf 7 führt dann direkt zum Verteilsystem 12.When using a power-controlled refrigeration system, the Buffer 9 can be dispensed with. The liquid circuit 7 then leads directly to the distribution system 12.

Im Kühlkreislauf der Kältemaschine kann vor dem Expansionsventil 5 ein Wärmeübertrager 25 eingesetzt werden, der von dem Wasser durchströmt wird, das dem Verteilsystem 18 danach zugeführt wird. Hierdurch wird eine weitere Verbesserung der Kühlleistung ermöglicht.In the cooling circuit of the refrigerator, an expansion valve 5 can be a Heat exchanger 25 is used, which is flowed through by the water, which is then fed to the distribution system 18. This will make another one Enables improvement in cooling performance.

Weiterhin kann im Kühlkreislauf der Kältemaschine vor dem Wasserkondensator 3 ein Wärmeübertrager 26 eingesetzt werden, der von der Luft, die aus dem Verdunstungskühler 14 austritt, durchströmt wird. Die dadurch erhöhte Wärmeabfuhr vergrößert die Gesamtleistung der Vorrichtung. Hierbei wird der Umstand genutzt, dass die Wärme aus dem Wärmetauscher 14 der Kältemaschine 3, 13, 14 immer noch aufnahmefähiger für Wärme ist, die aus dem selben Kältekreis der Kältemaschine kommt. Furthermore, in the cooling circuit of the chiller in front of the water condenser 3, a heat exchanger 26 is used, the air coming from the Evaporative cooler 14 emerges, is flowed through. The thereby increased Heat dissipation increases the overall performance of the device. Here, the Used fact that the heat from the heat exchanger 14 of the Chiller 3, 13, 14 is still more receptive to heat that is off the same cooling circuit of the chiller comes.

Die Vorrichtung bzw. Anlage wird vorzugsweise in drei verschiedenen Stufen gefahren:

  • 1) Ist die Luft ausreichend kühl, so ist es nicht erforderlich, dass die Kältemaschine arbeitet und es kann auch eine Beaufschlagung mit Wasser in dem Plattenwärmeübertrager unterbleiben. Die zu kühlende Flüssigkeit strömt über die Leitung 21, den Wärmeübertrager 23, die Leitung 22 und über den Verdampfer 6 zum Zwischenspeicher 9 zurück.
  • 2) Ist die Luftemperatur so hoch, dass die freie Kühlung nicht mehr ausreicht, kann die Kühlleistung durch die Wasserbeaufschlagung des Verdunstungskühlers 14 erhöht werden.
  • 3) Bei weiterer Zunahme der Luftemperatur und einem eventuell höherem Kühlbedarf, wird die Kältemaschine zugeschaltet. Die Beaufschlagung des Wärmeübertragers 25 mit Wasser und dadurch bedingte Absenkung der Kondensationstemperatur verbessert die Leistungszahl der Kältemaschine und reduziert dadurch den Stromverbrauch. Die Gesamtleistung des Systems wird durch den Wärmeübertrager 26 erhöht.
    • The device or system is preferably operated in three different stages:
  • 1) If the air is sufficiently cool, it is not necessary for the refrigeration machine to work, and exposure to water in the plate heat exchanger can also be omitted. The liquid to be cooled flows back via line 21, heat exchanger 23, line 22 and via evaporator 6 to intermediate store 9.
  • 2) If the air temperature is so high that the free cooling is no longer sufficient, the cooling capacity can be increased by the evaporation cooler 14 being exposed to water.
  • 3) If the air temperature increases further and the cooling requirement may increase, the chiller is switched on. Applying water to the heat exchanger 25 and thereby lowering the condensation temperature improves the coefficient of performance of the refrigerator and thereby reduces the power consumption. The overall performance of the system is increased by the heat exchanger 26.

    • Die zu kühlende Flüssigkeit 21 kann entweder über den Wärmeübertrager 23 und anschließend über den Verdampfer 6 der Kältemaschine oder durch Umschaltung des Ventils 24 nur über den Verdampfer 6 zirkulieren.The liquid 21 to be cooled can either be via the heat exchanger 23 and then via the evaporator 6 of the refrigerator or through Switch valve 24 only circulate via the evaporator 6.

    Alle Teile der Vorrichtung bzw. der Anlage, das heißt alle Teile der Kältemaschine, des Verdunstungskühlers 14 und der Steuerung und Regelung und auch alle Flüssigkeiten und stromführenden Leitungen sind innerhalb eines Gehäuses 20 in kompakter Weise angeordnet. Das Gehäuse kann dabei aus mehreren leicht zu transportierenden Einheiten bestehen. All parts of the device or system, that is, all parts of the Chiller, the evaporative cooler 14 and the control and regulation and all liquids and live lines are within one Housing 20 arranged in a compact manner. The housing can consist of several easy to transport units.

    In einer weiteren alternativen Ausführung ist zum Wasserkondensator 3 ein diesen überbrückender Bypass 28 angeordnet, durch den der zweite Flüssigkeitskreislauf 4 im Teillastbetrieb fließt, wenn ein Ventil (Dreiwegeventil) 27 geöffnet wird. Damit erfolgt die Kondensation nur in dem Wärmeübertrager (Kondensator) 26. Hierbei arbeitet der Kompressor 2 in mehreren Stufen. Dies hat den Vorteil, dass der Kreislauf 4 thermisch nicht belastet wird, so dass der Energieverbrauch des Gesamtsystems verringert wird.In a further alternative embodiment, there is a water condenser 3 arranged this bridging bypass 28 through which the second Liquid circuit 4 flows in partial load operation when a valve (three-way valve) 27 is opened. The condensation thus only takes place in the heat exchanger (Condenser) 26. Here, the compressor 2 operates in several stages. This has the advantage that the circuit 4 is not thermally stressed, so that the Energy consumption of the overall system is reduced.

    Claims (6)

    1. A device for generating cold water for the purpose of cooling rooms by means of cooling surfaces and coolers in building services equipment, in particular for cooling ceilings (11), having a refrigerating machine (2, 3, 5, 6) and an evaporation cooler (14) connected upstream thereof through which passes the fluid to be cooled and air, wherein
      the cooling air flow of the evaporation cooler (14) can be loaded with water,
      the fluid (4) to be cooled flows via a heat transfer unit (23) and the condenser (3) of the refrigerating machine or directly to an intermediate accumulator (9) or directly to the consumer (11),
      characterized in that
      an air condenser (26) is connected upstream of the condenser (3), and that
      the air condenser (26) is arranged in the exhaust air duct of the evaporation cooler (14).
    2. A device according to claim 1, characterized in that the evaporation cooler (14) is a plate heat transfer unit made of polypropylene.
    3. A device according to claim 1 or 2, characterized in that in the cooling circuit (1) of the refrigerating machine there is arranged upstream of the expansion valve (5) a heat transfer unit (25) through which the water flows before the water is fed into the outside air flow via the distributor system (18) of the evaporation cooler (14).
    4. A device according to any of the preceding claims, characterized in that all parts of the refrigeration machine, the evaporation cooler and the control/regulating system are arranged within a housing (20).
    5. A device according to any of the preceding claims, characterized in that the housing consists of a plurality of transportable units.
    6. A device according to any of the preceding claims, characterized in that there is arranged a bypass (28) which bridges the condenser (3) of the refrigerating machine and can be switched in via a valve (27).
    EP01902417A 2000-03-02 2001-02-06 Device for producing cold water for the purpose of cooling rooms Expired - Lifetime EP1259769B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    DK01902417T DK1259769T3 (en) 2000-03-02 2001-02-06 Device for generating cold water for room cooling

    Applications Claiming Priority (5)

    Application Number Priority Date Filing Date Title
    DE10010216 2000-03-02
    DE10010216 2000-03-02
    DE10042828 2000-08-30
    DE10042828A DE10042828A1 (en) 2000-03-02 2000-08-30 Cold water production unit, for cooling rooms, comprises a refrigeration machine and an evaporative cooler mounted upstream, through which liquid and air flow
    PCT/EP2001/001249 WO2001065188A1 (en) 2000-03-02 2001-02-06 Device for producing cold water for the purpose of cooling rooms

    Publications (2)

    Publication Number Publication Date
    EP1259769A1 EP1259769A1 (en) 2002-11-27
    EP1259769B1 true EP1259769B1 (en) 2004-11-24

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01902417A Expired - Lifetime EP1259769B1 (en) 2000-03-02 2001-02-06 Device for producing cold water for the purpose of cooling rooms

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    EP (1) EP1259769B1 (en)
    AT (1) ATE283463T1 (en)
    AU (1) AU2001230251A1 (en)
    CZ (1) CZ304827B6 (en)
    ES (1) ES2230266T3 (en)
    HU (1) HU228723B1 (en)
    NO (1) NO315440B1 (en)
    PT (1) PT1259769E (en)
    SK (1) SK286594B6 (en)
    WO (1) WO2001065188A1 (en)

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    US20100242532A1 (en) * 2009-03-24 2010-09-30 Johnson Controls Technology Company Free cooling refrigeration system
    WO2011019909A1 (en) * 2009-08-14 2011-02-17 Johnson Controls Technology Company Free cooling refrigeration system
    CN101988722A (en) * 2010-10-27 2011-03-23 郭海新 Natural cold source cooling water chiller
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    NO20024015D0 (en) 2002-08-22
    HUP0300422A2 (en) 2003-06-28
    HU228723B1 (en) 2013-05-28
    CZ20022941A3 (en) 2002-11-13
    SK12462002A3 (en) 2002-12-03
    EP1259769A1 (en) 2002-11-27
    AU2001230251A1 (en) 2001-09-12
    PT1259769E (en) 2005-03-31
    SK286594B6 (en) 2009-01-07
    NO20024015L (en) 2002-10-28
    ATE283463T1 (en) 2004-12-15
    ES2230266T3 (en) 2005-05-01
    CZ304827B6 (en) 2014-11-26
    WO2001065188A1 (en) 2001-09-07

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