EP2317254A2 - Installation de refroidissement protégée contre l'explosion dotée d'un moyen de refroidissement inflammable - Google Patents

Installation de refroidissement protégée contre l'explosion dotée d'un moyen de refroidissement inflammable Download PDF

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Publication number
EP2317254A2
EP2317254A2 EP10176047A EP10176047A EP2317254A2 EP 2317254 A2 EP2317254 A2 EP 2317254A2 EP 10176047 A EP10176047 A EP 10176047A EP 10176047 A EP10176047 A EP 10176047A EP 2317254 A2 EP2317254 A2 EP 2317254A2
Authority
EP
European Patent Office
Prior art keywords
refrigeration system
explosion
refrigerant
evaporator
enclosure
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.)
Withdrawn
Application number
EP10176047A
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German (de)
English (en)
Inventor
Jörg FUHRMANN
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.)
Weska Kalteanlagen GmbH
Original Assignee
Weska Kalteanlagen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weska Kalteanlagen GmbH filed Critical Weska Kalteanlagen GmbH
Publication of EP2317254A2 publication Critical patent/EP2317254A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/12—Inflammable refrigerants
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
    • F25B2500/222—Detecting refrigerant leaks
    • 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
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/04—Desuperheaters
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel

Definitions

  • the invention relates to an explosion-proof refrigeration system with combustible refrigerant.
  • the refrigerant circuit of the refrigeration system is disposed within a housing, which also has a suction device and a gas sensor.
  • a control device ensures that upon reaching a predetermined concentration of refrigerant gas in the atmosphere of the enclosure all disposed within the housing components of the explosion-proof refrigeration system are disconnected from the power supply and the operation of an explosion-proof fan is triggered.
  • the refrigeration system is used for cooling, air conditioning and heating and includes a heat pump circuit.
  • the equipment When using flammable refrigerants, for example hydrocarbons, such as propane, butane or the like, in refrigeration systems, the equipment may pose an explosion hazard. As a result of leaks, the combustible refrigerant can escape from the supposedly dense refrigerant circuit and, in conjunction with the oxygen from the ambient air, create an explosive atmosphere.
  • flammable refrigerants for example hydrocarbons, such as propane, butane or the like
  • the combustible substance In order to create an explosive atmosphere, the combustible substance must be present in an appropriate mixing ratio with oxygen. In addition, the presence of a corresponding ignition source is necessary for the triggering of an explosion. In addition to open flames, hot surfaces or visible sparks generated electrically or mechanically, discharges of static electricity, such as even very small ignition energies through clothing, electrical equalizing currents, ultrasound, electromagnetic radiation, shockwaves and adiabatic compression, can trigger explosions.
  • ATEX Europe Directive requires operators of equipment to avoid explosions and to ensure adequate protection.
  • ATEX stands for "ATmosphere EXplosive" and applies to all machine components and controls used in explosive atmospheres.
  • the ATEX directives 94/9 / EC and 1999/92 / EC have priority over machine guidelines and must always be applied.
  • the ATEX guidelines require documentation on the frequency of occurrence of an explosive atmosphere and their spatial delimitation. These areas should be zoned according to the specification. Furthermore, it must be ensured that only the correct category is used in this zone type corresponding components. Once an area is classified as dangerous, it will determine the necessary restrictions on potential sources of ignition that might be present in that area.
  • the secondary explosion protection includes the use of appropriate equipment, components and materials or instructions for the stay in hazardous areas.
  • the third measure is to limit the effects of an explosion to an acceptable level. For this purpose, appropriate encapsulations of the system or its installation site must be taken into account.
  • All equipment installed in an explosive atmosphere must comply with the ATEX conditions as far as they are operated within the European Union. According to the ATEX guidelines, all electrical and electrical systems are basically to consider mechanical devices.
  • the equipment referred to in Directive 94/9 / EC includes machinery, equipment, stationary or portable equipment, control and equipment components and warning and preventive systems, used individually or in combination to generate, transmit, store, measure, regulate and convert energies and / or or intended for the processing of materials and have their own potential sources of ignition and thereby may cause an explosion into consideration.
  • a refrigeration system such as compressors, evaporators and condenser, but also valves, pressure gauges, sensors and the like, fall within the scope of the ATEX directives.
  • components marked accordingly and provided with the required documentation for example the manufacturer's relationship or declaration of conformity, must be used by the plant manufacturer.
  • the explanations of the component manufacturers relate only to the individual components. It is assumed that during installation and during operation the corresponding installation standards as well as installation and operating instructions, for example the operating instructions, are complied with.
  • the interactions between different components of the refrigeration system with the environment, especially with regard to potential sources of ignition, must be assessed by the system manufacturer. If the assessment is positive, the plant manufacturer must provide a corresponding explanation for the equipment group or installation. The operator must report the equipment to the supervising body and request any necessary acceptance.
  • the operator obligations also include the creation of a so-called explosion protection document. This is regulated in the ATEX 137. This includes, among other things, an assessment of the explosion risks. Depending on the frequency and duration of the occurrence of an explosive atmosphere, potentially explosive areas must be divided into zones and marked accordingly.
  • Refrigerant systems with flammable refrigerants for example hydrocarbons, such as propane, butane or the like, thus fall within the scope of the ATEX directives for the intended use of equipment and protective systems in potentially explosive atmospheres.
  • hydrocarbons such as propane, butane or the like
  • zoning In this case, at least of zone 2 in the vicinity of the system is usually assumed, since leakage can not be completely excluded. Therefore, according to the ATEX guidelines, certain devices must be used for the declared zone.
  • a so-called composite refrigeration system is provided with a variety of evaporators. These systems are used for example in supermarkets in which the evaporators in so-called consumers, such as refrigerators, refrigerators and freezers, are integrated. In this case, cooling capacities are provided at different temperature levels. The different temperature levels cause different pressures during the evaporation of the refrigerant.
  • Compound refrigeration systems consist of closed systems consisting essentially of the components evaporator, compressor, condenser and expansion element. The condenser is located at facilities in supermarkets outside the market, surrounded by outside air.
  • the arrangement of a refrigerant accumulator is also known, which compensates for the differences in refrigerant amount during operation within the refrigeration system.
  • the use of refrigerant accumulators is necessary.
  • a sufficient amount of refrigerant must be made available in the refrigerant circuit of a combined refrigeration system so that all evaporators can be adequately supplied, even with maximum refrigeration demand.
  • excess refrigerant must be stored.
  • the collectors have a disadvantageous large volume, which is charged with refrigerant and with combustible Refrigerant-filled refrigeration systems drastically increases the potential for explosion in the event of leaks.
  • the object of the present invention is to provide an explosion-proof refrigeration system with combustible refrigerant.
  • the Refrigeration system should be less expensive to install and operate than the systems known in the art.
  • the extra effort compared to a comparable refrigeration system with incombustible refrigerant must be minimized.
  • the safety of the system especially with regard to explosion protection, to be guaranteed with minimal maintenance.
  • the need for refrigerant within the system must be kept to a minimum. An explosion in case of leakage or leakage of the system should be excluded.
  • the object is achieved by an explosion-proof refrigeration system.
  • the system comprises a housing in which a suction device, a gas sensor and a refrigerant circuit of a refrigeration system are arranged.
  • the refrigeration system is enclosed with the refrigerant-carrying, non-explosion-proof components and their connecting elements as a coherent unit of the gas-tight housing, with only designed as a condenser air-pressurized heat exchanger is located outside the housing.
  • the refrigerant-carrying components are not formed with a separate explosion protection.
  • the suction device has an explosion-proof designed fan, which is also referred to as ATEX fan.
  • a control device is additionally provided in such a way that, when a predetermined concentration of refrigerant gas in the atmosphere of the enclosure is reached, all components of the explosion-proof refrigeration system arranged inside the enclosure are switched off and disconnected from the power supply. Thus, there is no direct danger of explosion of these components due to sparking.
  • the operation of the explosion-proof fan is triggered. Due to forced ventilation, the enriched with refrigerant gas atmosphere within the housing is spent to the outside, in the environment of the housing. In the environment becomes the refrigerant-air mixture mixed in the shortest possible time with the ambient air and thereby diluted very strong, so that no more danger of explosion of the mixture.
  • the concentration of the refrigerant gas in the atmosphere of the enclosure is monitored by means of one or more gas sensors disposed within the enclosure.
  • Preferred locations of the gas sensors are areas of possible leakage points of the refrigeration system.
  • the arrangement of the gas sensors in the lower part of the enclosure since the refrigerant decreases with greater density than air within the enclosure and accumulates in particular on the ground or near the ground. The gas sensor arranged there would react to the specified increased concentration of refrigerant and trigger the safety procedures for explosion protection.
  • the concentration of refrigerant gas in the atmosphere within the enclosure in a very short time is reduced again to a minimum, so that an enrichment of refrigerant up to a explosive atmosphere is avoided.
  • the fresh air flows through a ventilation flap, which is located in the lower part of the wall of the enclosure. By sucking in the air from the enclosure when the fan is switched on, the ventilation flap opens automatically. The ventilation flap is closed when the fan is switched off so that it is not possible to exchange air with the environment or to allow fresh air to flow after it.
  • Under gas-tight housing within the meaning of the invention is a encapsulation of the explosion-proof refrigeration system from the environment to understand.
  • By separating a defined atmosphere is created to determine their composition or the concentrations of their main components well and thus to monitor are.
  • connection points of the refrigerant-carrying lines of the outside of the housing arranged capacitor are housed within the housing.
  • the refrigerant-carrying lines are soldered or welded at their connection points which are at risk for the occurrence of leakage, so that the possibility of the occurrence of leakage is minimized.
  • the guided outside the housing, acted upon with combustible refrigerant lines are preferably made of seamless tubes, which also have no other connection points. Leakage outside the enclosure is thus almost impossible.
  • the seamless tubes are passed through openings in the wall of the enclosure through the wall and sealed.
  • the explosion-proof fan is advantageously arranged within an air duct, wherein the air duct extends with an open end in the lower region of the enclosure.
  • the air duct is a channel in the form of a ventilation duct of an air conditioner to understand, depending on the extracted gas or gas mixture air or a refrigerant-air mixture from the housing leads into the surrounding environment.
  • the air duct is advantageously designed in such a way that the refrigerant-air mixture to be sucked out of the lower region of the enclosure is guided outward within the air duct over the upper region of the enclosure.
  • the refrigerant escaping from the refrigeration system in the event of an accident or leakage accumulates as air at the bottom of the enclosure due to the greater density and is therefore to be extracted there.
  • the air duct in the upper region of the enclosure on an additional tee provides a further opening of the air duct to the atmosphere within the enclosure.
  • the air is removed through the opening provided by the T-piece gas-tight housing sucked and discharged into the environment, which in turn leads to the compensation of the air within the gas-tight housing and the environment of the housing.
  • This opening is used to equalize the air during normal operation of the refrigeration system, in which the heated air from the components of the refrigerant circuit accumulates in the upper part of the enclosure. The air must therefore not be enriched with refrigerant.
  • the upper opening of the air duct on the T-piece advantageously has a controlled ventilation flap which is closed when the fan is switched off and in the event of an accident.
  • an additional, not explosion-proof trained fan is disposed within the upper region of an outer wall of the enclosure.
  • the fan sucks the air in the enclosure through heat-emitting components of the refrigeration system, such as compressor, heated air, thus balancing the air within the gas-tight housing and the environment.
  • the air does not have to be enriched with refrigerant, as in the event of leakage or damage.
  • the heat exchangers of the refrigeration system are connected via heat transfer circuits with the consumers, that is, for example, heat exchangers for cooling or heating in the supermarket.
  • the heat carriers are circulated by means of pumps between the components in the circuit.
  • the pumps are advantageously arranged within the enclosure. Only the connections of the Heat transfer circuits protrude from the gas-tight housing, which simplifies installation.
  • the enclosure with dimensions of about 3 m in length, 2 m in height and 2 m in width, advantageously from each other sealed areas or chambers.
  • a chamber all components of the refrigeration system and the pumps of the heat transfer medium circuits are arranged.
  • This chamber is accessible through openings or doors in a vertically oriented wall of the housing.
  • a control cabinet which can also be walked on from outside by a control cabinet door, is likewise arranged in a vertically oriented wall of the enclosure.
  • the separated areas of the housing are only accessible from the outside and have no connection within the housing.
  • control cabinet there are facilities for controlling the explosion-proof refrigeration system.
  • the devices in the control cabinet are always connected to the power supply.
  • the components of the refrigeration system and the heat transfer fluid circuits are disconnected from the power supply for safety reasons.
  • the enclosure in the lower region or at the bottom is limited by a liquid-tight tub.
  • the liquid-tight pan prevents as part of the gas-tight enclosure the uncontrolled exchange of the atmosphere within the enclosure with the environment and on the other hand has the advantage that no liquid can escape from the enclosure, which could be caused for example by the escape of oil , The liquid can then be safely and easily removed as needed.
  • the refrigeration system comprising the refrigerant-loaded components and lines and their connecting elements is formed as a coherent compact unit and not destructively dismantled, since the connecting elements are designed as welded or soldered for the occurrence of leakage points welded.
  • the arranged inside the housing closed refrigerant circuit of the refrigeration system is advantageously provided on the one hand, the need for cooling capacities at different temperature levels and, secondly, the need for heat output of a system of heat recovery.
  • the refrigerant circuit of the refrigeration system has in the flow direction of the refrigerant at least one compressor unit, a heat exchanger, which serves for the heat recovery, an air-charged capacitor, a collector, an expansion element and an evaporator.
  • a heat exchanger which serves for the heat recovery
  • an air-charged capacitor a collector
  • an expansion element a heat exchanger
  • an evaporator of an integrated heat pump circuit with an upstream expansion element is additionally integrated, which is designed according to the concept luftbeaufschlagt.
  • the evaporator of the heat pump circuit according to the invention with the condenser of the refrigeration system coupled thermally conductive. This double-acting heat exchanger is also referred to below as an integrated condenser-evaporator.
  • the operation of the system depends, among other things, on the ambient temperature and thus on the services to be provided for heating and cooling.
  • the evaporator of the heat pump circuit is to operate in the external conditions in which the total amount of heat to be discharged at high pressure is insufficient to meet the heat demand of the heat recovery system.
  • the amount of heat to be dispensed at high pressure results from the entirety of the Conventional refrigerant circuit recorded cooling capacities plus the introduced via the compression processes amounts of heat.
  • the heat generation units such as boilers to be fired, which are required extra in conventional systems under the above operating conditions, are replaced by only one heat exchanger, which is additionally integrated in the refrigeration system. Since this heat exchanger is also connected as an evaporator of the heat pump circuit in parallel with a conventional refrigeration unit associated evaporator and thus no additional need for other components, such as a compressor, the cost of the expansion of the refrigeration system is very low.
  • the integrated condenser-evaporator is preferably designed as a tube bundle heat exchanger with fins.
  • the lamellae advantageously comprise both the tubes of the evaporator of the heat pump circuit and the tubes of the condenser of the refrigeration system.
  • the additionally arranged tubes on the one hand the tubes of the evaporator for the condenser and on the other the tubes of the condenser for the evaporator and the associated fins, which also thermally contact the different tubes, the area for heat transfer is increased.
  • the fins are thermally conductively coupled to the tubes of the evaporator and the condenser. The outside air or ambient air flows through the spaces between the slats on the outside of the tubes.
  • the refrigerant flows in each case within the tubes in the case of the evaporator of the heat pump circuit under evaporation pressure and in the case of the condenser under condensation pressure of the refrigeration system. Due to the increased area advantageously lower temperature differences result in the process of heat transfer.
  • the process of evaporation takes place at a higher vaporization temperature and higher vapor pressure than when using a single heat exchanger with a smaller area.
  • the pressure ratio and thus the power supplied to the compressor are lower.
  • the coefficient of performance of the system is advantageously larger. The system works more efficiently.
  • Both the evaporator of the heat pump circuit and the condenser of the refrigeration system are luftbeaufschlagte heat exchanger, both of which are each in contact with the outside air, wherein the evaporator absorbs heat from the ambient air and the condenser emits heat to the ambient air.
  • both heat exchangers would be placed independently on the outside of the building, for example on the roof or on one side of the exterior wall of the building. The advantageous combination of the heat exchanger in a single integrated condenser-evaporator can be saved in addition space.
  • the temperature level of the heat exchanger is in operation as a condenser of the refrigeration system at values above ambient temperature, so that the icy surfaces can be thawed without additional facilities, such as are necessary for hot gas defrosting or for electrical defrosting.
  • the integrated heat exchanger is advantageous to switch to the mode as a capacitor. The heat dissipated during condensation serves to melt the ice and evaporate the water. By dispensing with additional devices for defrosting the heat exchanger surface further costs can be saved in the material and installation costs. The operation of the system also causes less costs.
  • the inner volume of the refrigerant circuit can be reduced, which advantageously minimizes the amount of refrigerant or filling capacity of the system and thus the danger emanating from it Explosions significantly reduced in case of leakage or breakdown. This is in the non-operating parts of the refrigeration system accumulated refrigerant must otherwise be compensated disadvantageously by a larger capacity.
  • both parts of the condenser of the condenser-evaporator and the associated collector can be operated simultaneously or supplied with refrigerant.
  • the refrigerant circuit of the refrigeration system 1 is thereby advantageously preassembled and filled with refrigerant.
  • the refrigerant circuit is closed.
  • the quality control of the refrigeration system is facilitated.
  • Elaborate tightness and / or pressure tests are already performed during the installation of the circuit itself. Post-processing after installation of the system at the destination is not necessary.
  • Fig. 5 is the enclosure 23 of the explosion-proof refrigeration system with the flow diagram of the refrigerant circuit of the refrigeration system 1 with integrated heat pump circuit shown.
  • the refrigeration system 1 for example, as a supermarket refrigeration system with different consumers different temperature levels, this has one or more compressors 5, 6, wherein the compressor 5 of the normal cooling circuit and the compressor 6 of the circuit for air conditioning and the circuit of the heat pump are connected separately due to different inlet pressures.
  • the heat pump compressor works reversibly and, with appropriate design, can cover the entire climate requirement of the building.
  • the compressor 5 of the normal cooling circuit are connected in parallel and form a compressor unit.
  • the liquid refrigerant is distributed via the liquid line 18, which connects the collector 9 with the consumers, on the different evaporators 2, 3, 4 and before entering the evaporator 2, 3, 4 by means of expansion valves 11, 13, 15 on the desired pressure level is relaxed.
  • the process of evaporation to provide the cooling capacity of the normal cooling takes place at a different pressure level than the process of evaporation to provide the cooling capacity for air conditioning and heat absorption in the heat pump cycle.
  • Evaporators 2, 3, 4 shown as individual components may also be arranged as composites of a plurality of evaporators.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP10176047A 2009-09-11 2010-09-09 Installation de refroidissement protégée contre l'explosion dotée d'un moyen de refroidissement inflammable Withdrawn EP2317254A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009029392A DE102009029392A1 (de) 2009-09-11 2009-09-11 Explosionsgeschützte Kälteanlage mit brennbarem Kältemittel

Publications (1)

Publication Number Publication Date
EP2317254A2 true EP2317254A2 (fr) 2011-05-04

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EP10176047A Withdrawn EP2317254A2 (fr) 2009-09-11 2010-09-09 Installation de refroidissement protégée contre l'explosion dotée d'un moyen de refroidissement inflammable

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EP (1) EP2317254A2 (fr)
DE (1) DE102009029392A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4269892A1 (fr) * 2022-04-28 2023-11-01 Weiss Technik GmbH Chambre d'essai et procédé

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6733145B2 (ja) * 2015-09-30 2020-07-29 ダイキン工業株式会社 水熱交換器収容ユニット
DE102016112851A1 (de) 2016-07-13 2018-01-18 Viessmann Werke Gmbh & Co Kg Kältemodul
DE102018109604B4 (de) * 2018-04-20 2019-10-31 Rittal Gmbh & Co. Kg Schaltschrankanordnung mit Sicherheitsfunktion sowie ein entsprechendes Verfahren
SE543347C2 (en) 2018-06-22 2020-12-08 Flaektgroup Sweden Ab A safety system, an air handling system, a method and a computer program product for evacuation of contaminated air
DE102019101427A1 (de) * 2019-01-21 2020-07-23 Viessmann Werke Gmbh & Co. Kg Wärmetechnisches Gerät
DE102019001634A1 (de) * 2019-03-08 2020-09-10 Stiebel Eltron Gmbh & Co. Kg Wärmepumpe
EP3712531A1 (fr) 2019-03-22 2020-09-23 Vaillant GmbH Dispositif de rinçage de sécurité pour une pompe à chaleur
NL2023773B1 (nl) * 2019-09-04 2021-05-12 Itho Daalderop Nederland B V Warmtepompinrichting en sifon voor gebruik in een warmtepompsysteem
DE102019124531A1 (de) 2019-09-12 2021-03-18 Vaillant Gmbh Sicherheitsspülvorrichtung für eine Wärmepumpe
DE102020118778A1 (de) 2020-07-16 2022-01-20 Vaillant Gmbh Sicherheitsspülvorrichtung für eine Wärmepumpe
DE102021214758A1 (de) 2021-12-21 2023-06-22 Robert Bosch Gesellschaft mit beschränkter Haftung Klimatisierungseinrichtung, System und Verfahren zum Betrieb der Klimatisierungseinrichtung
CN114593544A (zh) * 2022-03-15 2022-06-07 宁波冰轮科技有限公司 一种防爆冷库
DE102022116776B3 (de) 2022-07-05 2023-11-02 Rittal Gmbh & Co. Kg Schaltschrankanordnung mit zwangsbelüftung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911693A (en) * 1974-05-06 1975-10-14 Friedrich Refrigerators Inc Hazardous duty room air conditioner
IT1275221B (it) * 1995-02-07 1997-07-31 Miralfin Srl Apparecchiatura e procedimento per il condizionamento di aria con un fluido frigorigeno non nocivo almeno all'ozono stratosferico
DE19635265C2 (de) * 1996-08-30 1998-07-30 Linde Ag Kühl- und/oder Tiefkühlmöbel mit integriertem Kälteträgersystem
DE19820613A1 (de) * 1998-05-08 1999-11-11 Hans Tillmann Sicherheitseinrichtung für die Überwachung von explosionsgefährdeten Räumen
KR20020067525A (ko) * 2000-09-26 2002-08-22 다이킨 고교 가부시키가이샤 공기조화기
DE102004030785B3 (de) * 2004-03-15 2005-11-10 Pfannenberg Gmbh Kühlanordnung für einen Schaltschrank mit Kühlgerät zum Einsatz in explosionsgefährdeten Räumen
AT504135B1 (de) * 2006-11-13 2008-03-15 Arneg Kuehlmoebel Und Ladenein Verfahren zur wärmerückgewinnung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4269892A1 (fr) * 2022-04-28 2023-11-01 Weiss Technik GmbH Chambre d'essai et procédé

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