EP2405223B1 - Unabhängige Vorrichtung zur Wärmeenergierückgewinnung und -übertragung von Öl auf Wasser - Google Patents

Unabhängige Vorrichtung zur Wärmeenergierückgewinnung und -übertragung von Öl auf Wasser Download PDF

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Publication number
EP2405223B1
EP2405223B1 EP11370007.4A EP11370007A EP2405223B1 EP 2405223 B1 EP2405223 B1 EP 2405223B1 EP 11370007 A EP11370007 A EP 11370007A EP 2405223 B1 EP2405223 B1 EP 2405223B1
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Prior art keywords
oil
water
circuit
heat exchanger
compressor
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EP11370007.4A
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English (en)
French (fr)
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EP2405223A1 (de
Inventor
Serge Boutry
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Airflux Par Actions Simplifiee Ste
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Airflux Par Actions Simplifiee Ste
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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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/22—Fluid gaseous, i.e. compressible
    • F04C2210/221—Air
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids

Definitions

  • the invention relates to an independent thermal energy recovery device for transferring heat from the oil to the water.
  • This device will find a particular application to be connected to the oil circuit of a rotary compressor with oil injection for the production of compressed air.
  • the field of the invention is that of the production of compressed air and more particularly of rotary oil-injection compressors for the production of compressed air.
  • compressors are commonly used in industry to produce compressed air which can then be used in a variety of ways, for example for blow cleaning, as conveyor means (ie fluidized bed) or as pneumatic energy for tools such as drill, screwdriver or others.
  • a rotary compressor with oil injection increases the pressure of the air through oil.
  • the compressor comprises a rotary pump which compresses a mixed fluid mixture of air and oil. This fluid thus compressed is then passed to a separator tank inside which the oil and the compressed air are separated. This compressed air can then be stored in a compressed air tank. During the compression step, the temperature of the oil is greatly increased.
  • the compressor comprises in an integrated manner on the oil circuit, consecutively an oil / water exchanger and an oil / air exchanger in parallel to the circuit, respectively supplied via two thermostatic valves.
  • Each thermostatic valve makes it possible to direct the oil towards the corresponding exchanger (oil / water or oil / air) only if the oil is hot and to short-circuit the exchanger if the oil is cold.
  • Some compressors have only the oil / air exchanger to cool the oil, and are not equipped with oil / water exchanger.
  • the object of the present invention is to overcome the aforementioned drawbacks by proposing an independent energy recovery device for transferring heat from the oil to the water and intended to be connected, on the one hand, to the circuit of oil of a rotary compressor with oil injection for the production of compressed air and, secondly, the water circuit requiring a heat input for the purpose of recovering thermal energy.
  • Another object of the invention is to provide such an autonomous device that can be installed quickly or moved as needed.
  • Another object of the present invention is to provide such a device that can be connected to several oil compressors for heating the water of a circuit requiring a heat input.
  • Another object of the present invention is to provide such a device that allows to heat the water of a sanitary water circuit safely, without risk of cross-contamination between the oil of the oil injection compressor and the water from the sanitary water network.
  • Another object of the present invention is to provide such a device that makes it possible to control the correct operation, and in particular the power recovered.
  • the invention also relates to the use of the independent thermal energy recovery device according to the invention for the recovery of thermal energy generated by a rotary compressor with oil injection intended for the production of compressed air, the device being connected to the oil circuit of said compressor.
  • This compressor 2 comprises a rotary pump 26 which makes it possible to compress a fluid mixture of oil and air.
  • the pump 26 has an inlet for the oil, supplied by an oil circuit 22, and an inlet 27 for air.
  • the oil / air mixture thus compressed is then led to a separator tank 23 inside which the compressed air and the oil are separated.
  • the compressed air is led out of the tank 23 by a pipe 29, while the oil is recycled by the circuit 22 to the pump 26.
  • an oil / water exchanger 25 is provided, fed by a thermostatic valve 33 and, consequently, an oil / air exchanger 24, supplied by a thermostatic valve 28;
  • the oil can be cooled only by means of an air / oil exchanger (not shown), the compressor having no oil / water exchanger.
  • the invention relates to a device 1 for independent thermal energy recovery.
  • independent means that the thermal energy recovery device is autonomous and is not integrated with the rotary oil-injection compressor 2 to which it is intended to be connected but is a separate element.
  • This device 1 is intended for the transfer of heat from the oil to the water and is intended to be connected, on the one hand, to the oil circuit 22 of a rotary compressor 2 with oil injection for the production of oil. compressed air, especially in parallel via a thermostatic valve 3, and, secondly, to a water circuit 4 requiring a heat input.
  • the energy recovery device comprises a heat exchanger system 5 for heating cold water entering the device from the hot oil inlet of the device and producing hot water and the cold oil at the end of the device.
  • This heat exchanger system 5 comprises at least one oil / water exchanger 51; 52, 53; 54; 55, having a primary circuit 6 for oil and a secondary circuit 7; 71, 72 for water, and at least one circulation pump 8 for circulating the water of the secondary circuit of said oil / water exchanger 51; 52, 53; 54; 55.
  • This device 1 whose housing can have the following dimensions (about 1 m high, 60 cm wide, 40 cm deep), can be moved and connected easily, as needed, for example to preheat the water of a heating circuit of a building, upstream of the return of a boiler, or to preheat domestic hot water, upstream of the return of a boiler or heat the water of an industrial process.
  • the device can make it possible to recover up to 70% of the thermal energy lost by the rotary oil-injection compressor 2.
  • the device may comprise a first temperature probe t1 of the cold water at the inlet of the device, and a second temperature probe of the hot water t2 at the outlet of the device.
  • the device 1 may have electronics for calculating and displaying the power or energy recovered by the device.
  • a display screen 20 can display the temperature of the cold water at the inlet of the device and the hot water at the outlet of the device, or even the power or energy recovered by said device. device.
  • the third connector 16 and said fourth connector 17 are provided on the secondary circuit 7; 71; 72 of said oil / water heat exchanger 51; 52; 53; 55.
  • the circulation pump 8 makes it possible to circulate the water of the water circuit 4 requiring a heat input such as in particular that of the return of the sanitary water of a boiler or that of the circuit of water from a building heater upstream of the boiler.
  • the heat exchanger system 5 comprises not only said oil / water exchanger 54 but, in addition, a water / water exchanger 56 safety, provided in series.
  • the secondary circuit 7 of the oil / water exchanger 54 is common to the primary circuit 61 of said water / water exchanger 56 called the safety circuit.
  • An expansion vessel 82 is provided on the safety circuit 61.
  • the pump 8 allows the circulation of the water of the safety circuit 61.
  • Another pump 81 allows the circulation of water in the secondary circuit 73 of said water / water exchanger 56.
  • This embodiment illustrated in figure 6 is particularly applicable in the case where it is necessary to heat the domestic water, to avoid cross-contamination between compressor oil and domestic water.
  • the embodiment of the figure 4 is a device 1 for energy recovery connected on the one hand to the oil circuit 22 of a rotary compressor 2 with oil injection and, on the other hand, to a water circuit 4 requiring a heat input.
  • the device is connected to the compressor oil circuit 22 oil injection in parallel with said circuit 22 via a thermostatic valve 3 positioned on the oil circuit 22 of said compressor.
  • This thermostatic valve 3 makes it possible to divert the oil towards said device when the oil is hot, and otherwise, when the oil is cold, to deflect the oil by short-circuiting device.
  • the device is connected to the oil circuit 22 between the separator tank 23 of the compressor 2 and the oil / air exchanger cooler 24 integrated in the rotary compressor with oil injection.
  • the heat exchanger system 5 of the device 1 of the figure 4 is a single oil / water exchanger 51 system.
  • the primary circuit 6 of said heat exchanger receives the oil from the compressor 2 which enters hot through the first connector 10 at the input of the device and leaves by the second connector 13 at the output of the device.
  • a pipe allows the return of the cold oil at the outlet of the device on the circuit 22 of the compressor, upstream of the oil / water heat exchanger cooler 24 integrated with said compressor 2.
  • the secondary circuit 7 of said heat exchanger 5 receives the cold water that enters the third connector 16 at a cold temperature and hot spring at the fourth connection 17.
  • a circulation pump 8 allows the circulation of water in the secondary circuit 7.
  • a first temperature probe t1 makes it possible to target the cold water upstream of the exchanger 5 and a second temperature probe t2 makes it possible to target the hot water downstream of said exchanger 5.
  • the embodiment of the device illustrated in figure 5 is intended to be connected to two separate oil circuits 22 of two compressors 2 and 2 'rotary oil injection for the production of compressed air.
  • the heat exchanger system 5 of the device comprises two oil / water exchangers 52; 53 in parallel.
  • Each of the exchangers 52; 53 oil / water has a first connection 11 or 12 for the hot oil input of the device and a second connection 14 or 15 for the cold oil output of the device. This first connection and this second connection are provided on the primary circuit 6 of said corresponding oil / water exchanger 52 or 53.
  • the third connector 16 for the cold water inlet of the device is provided on a common cold water inlet of the respective secondary circuits 71 and 72 of said two oil / water exchangers 52, 53.
  • the fourth connection 17 intended for the hot water at the outlet of the device is provided on a common hot water outlet of the respective secondary circuits 71 and 72 of said two oil / water exchangers 52 and 53.
  • the device 1 according to the invention according to the figure 5 can thus be connected to two separate rotary compressors in order to recover the energy of these compressors to heat the water of a single water circuit 4.
  • This principle can be generalized to connect the device to a number N of rotary compressors with oil injection by providing as many oil / water exchangers in parallel as the number of compressors to be connected.
  • the device may have means for adjusting, in particular equalizing, the flow rates of water in the secondary circuits 71, 72, said exchangers 52, 53 comprising for each secondary circuit a flow control valve 18.
  • each of the secondary circuits 71, 72 may have stop valves 91, 92 for closing one of the secondary circuits 71, 72 in the case where the device 1 is connected to a single compressor. .
  • stop valves 91, 92 for closing one of the secondary circuits 71, 72 in the case where the device 1 is connected to a single compressor.
  • the embodiment of the device 1, in accordance with the example of figure 6 is particularly suitable for connection between the oil circuit of a compressor 2 and a sanitary water network.
  • it comprises in addition to said oil / water exchanger 54, a water / water exchanger 56 safety provided in series.
  • the secondary circuit 7 of said oil / water exchanger is common to the primary circuit 61 of said water / water exchanger 56 called safety circuit.
  • This safety circuit 61 may comprise an expansion vessel 82 and the pump 8. Another pump 81 is provided for circulation on the secondary circuit 73 of said water / water exchanger 56. This arrangement makes it possible to avoid any cross-contamination between the compressor oil 2 and the water in particular the water circuit 4.
  • the embodiment of device 1 of the figure 7 is also suitable for connection to a compressor 2 and a sanitary water circuit.
  • the oil / water exchanger is a double-skinned safety exchanger 55.
  • the device can be used for the recovery of thermal energy generated by a rotary compressor 2 with oil injection for the production of compressed air, the device being connected to the oil circuit 22 of said compressor.
  • the device is connected to the oil circuit 22 of said oil injection compressor in parallel with said circuit 22, a thermostatic valve 3 being positioned on the oil circuit 22 of said compressor 2 so as to deviate the oil to said device when the oil is hot and if not, when the oil is cold to deflect the oil by short circuit, the oil does not pass through the device 1.
  • the device according to the invention is connected to the oil circuit 22 between the air / oil separator tank 23 of the compressor 2 and the oil / air exchanger cooler 24 of said compressor 2 which is itself provided. in parallel of the circuit 22 by via a thermostatic valve 28.
  • the heat exchanger system 5 of the device 1 is therefore added to the oil / air exchanger cooler 24 specific to the compressor 2 which is kept in order to guarantee the cooling of the hot oil of the compressor 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Claims (15)

  1. Vorrichtung (1) zur unabhängigen Wärmeenergierückgewinnung und Wärmeübertragung von Öl auf Wasser, die dazu vorgesehen ist, zum einen mit dem Ölkreislauf eines Rotationsverdichters (2) mit Öleinspritzung zur Erzeugung von Druckluft, insbesondere parallel über ein Thermostatventil (3), und zum anderen mit einem eine Wärmezufuhr benötigenden Wasserkreislauf (4) verbunden zu werden,
    wobei die Vorrichtung zur Wärmeenergierückgewinnung aufweist:
    - ein Wärmeaustauschsystem (5), dazu ausgelegt, beim Einlass in die Vorrichtung ein Erwärmen des kalten Wassers aus dem warmen Öl beim Einlass in die Vorrichtung zu ermöglichen, und beim Auslass aus der Vorrichtung warmes Wasser und kaltes Öl zu erzeugen, wobei das System wenigstens einen Öl/Wasser-Wärmetauscher (51, 52, 53; 54; 55), der einen primären Kreislauf (6) für Öl und einen sekundären Kreislauf (7; 71, 72) für Wasser aufweist, sowie wenigstens eine Umlaufpumpe (8), um das Wasser des sekundären Kreislaufs des Öl/Wasser-Wärmetauschers (51; 52, 53; 54; 55) in Umlauf zu bringen, aufweist,
    - ein Gehäuse (9), in welches das Wärmeaustauschsystem (5) aufgenommen ist,
    - wenigstens einen ersten für das warme Öl in dem Einlass der Vorrichtung vorgesehenen Verbinder (10; 11, 12) und wenigstens einen zweiten für das kalte Öl in dem Auslass der Vorrichtung vorgesehenen Verbinder (13; 14, 15), die in dem primären Kreislauf (6) des Öl/Wasser-Wärmetauschers (51; 52, 53; 54; 55) vorgesehen sind,
    - einen dritten für das kalte Wasser in dem Einlass der Vorrichtung (1) vorgesehenen Verbinder (16) und einen vierten für das warme Wasser in dem Auslass der Vorrichtung (1) vorgesehenen Verbinder (17), und
    wobei die Vorrichtung dazu vorgesehen ist, mit wenigstens zwei unterschiedlichen Ölkreisläufen, die genauso vielen Rotationsverdichtern (2, 2') mit Öleinspritzung zur Erzeugung von Druckluft zugeordnet sind, verbunden zu werden, wobei das Wärmeaustauschsystem (5) der Vorrichtung wenigstens zwei parallele Öl/Wasser-Wärmetauscher (52, 53) aufweist,
    wobei jeder der Öl/Wasser-Wärmetauscher (52; 53) einen ersten Verbinder (11; 12) und einen zweiten Verbinder (14; 15) aufweist, die in dem primären Kreislauf (6) des entsprechenden Öl/Wasser-Wärmetauschers angeordnet sind, wobei der dritte Verbinder (16) an einem gemeinsamen Einlass für kaltes Wasser der sekundären Kreisläufe (71, 72) der wenigstens zwei Öl/Wasser-Wärmetauscher (52, 53) angeordnet ist und der vierte Verbinder (17) an einem gemeinsamen Auslass für warmes Wasser der sekundären Kreisläufe (71, 72) der wenigstens zwei Öl/Wasser-Wärmetauscher (52, 53) angeordnet ist,
    dadurch gekennzeichnet, dass
    die sekundären Kreisläufe (71, 72) der Öl/Wasser-Wärmetauscher (52, 53) voneinander unabhängig und parallel zueinander angeordnet sind, und dass die Vorrichtung Mittel zur Anpassung des Wasserdurchflusses in den sekundären Kreisläufen (71, 72) der Öl/Wasser-Wärmetauscher (52, 53) aufweist, welche Mittel für jeden sekundären Kreislauf ein Dosierventil für den Durchfluss (18) aufweisen.
  2. Vorrichtung nach Anspruch 1, bei der jeder der sekundären Kreisläufe (71, 72) der Öl/Wasser-Wärmetauscher (52, 53) Absperrventile (91, 92) aufweist.
  3. Vorrichtung nach Anspruch 1 oder 2, bei der der wenigstens eine Öl/Wasser-Wärmetauscher (55) ein Sicherheitswärmetauscher mit doppelter Schale ist.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, die eine erste Temperatursonde (t1) für kaltes Wasser beim Einlass in die Vorrichtung (1) und eine zweite Temperatursonde (t2) für warmes Wasser bei aus Auslass der Vorrichtung aufweist.
  5. Vorrichtung nach Anspruch 4, die Anzeigemittel (20) zur Anzeige der von der ersten Temperatursonde (t1) und von der zweiten Temperatursonde (t2) gemessenen Temperaturen des kalten Wassers beim Einlass in die Vorrichtung und des warmen Wassers beim Auslass aus der Vorrichtung aufweist.
  6. Vorrichtung nach Anspruch 4 oder 5, die Mittel zur Berechnung und Anzeige der von der Vorrichtung gewonnenen Leistung und/oder Energie aufweist.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, die einen Schaltkasten (30), der mit Netzspannung versorgt wird, und eine Kontrollleuchte aufweist, die anzeigt, ob die Vorrichtung unter Spannung ist.
  8. Vorrichtung nach einem der Ansprüche 1 bis 7, die einen Schaltkasten (30), der mit Netzspannung versorgt wird, und eine Kontrollleuchte aufweist, die anzeigt, ob die Vorrichtung im Betrieb zur Energierückgewinnung ist.
  9. Vorrichtung nach einem der Ansprüche 1 bis 8, die einen Schaltkasten (30), der mit Netzspannung versorgt wird, und eine Kontrollleuchte aufweist, die anzeigt, ob eine Fehlfunktion vorliegt.
  10. Vorrichtung nach einem der Ansprüche 1 bis 9, die einen Schaltkasten (30), der mit Netzspannung versorgt wird, und einen Sicherheitsknopf (31) zur Unterbrechung der Stromversorgung der Vorrichtung aufweist.
  11. Verwendung der Vorrichtung (1) zur unabhängigen Wärmeenergierückgewinnung gemäß einem der Ansprüche 1 bis 10 zur Rückgewinnung von Wärmeenergie, die von einem Rotationsverdichter (2) mit Öleinspritzung zur Erzeugung von Druckluft erzeugt wurde, wobei die Vorrichtung mit dem Ölkreislauf (22) des Verdichters (2) verbunden ist.
  12. Verwendung nach Anspruch 11, bei welcher die Vorrichtung (1) mit dem Ölkreislauf des Rotationsverdichters mit Öleinspritzung parallel geschaltet ist, wobei ein Thermostatventil (3) in dem Ölkreislauf (22) des Verdichters (2) derart angeordnet ist, dass
    - das Öl zu der erfindungsgemäßen Vorrichtung (1) umgeleitet wird, wenn das Öl warm ist, aber nicht wenn das Öl kalt ist, in welchem Fall nämlich:
    - das Öl unter Umgehung der erfindungsgemäßen Vorrichtung (1) umgeleitet wird, sodass es die Vorrichtung nicht passiert.
  13. Verwendung nach Anspruch 11 oder 12, bei welcher die erfindungsgemäße Vorrichtung (1) mit dem Ölkreislauf (22) zwischen einem Öl/Wasser-Abscheider (23) und einem Öl/Wasser-Wärmetauscher (24) in Form eines Kühlers des Rotationsverdichters mit Öleinspritzung verbunden ist.
  14. Verwendung nach einem der Ansprüche 11 bis 13 zum Vorwärmen des Wassers in dem Rücklauf aus einem Heizkessel.
  15. Verwendung nach einem der Ansprüche 11 bis 14 zum Vorwärmen von Brauchwasser oder zum Heizen von Räumen.
EP11370007.4A 2010-07-08 2011-07-07 Unabhängige Vorrichtung zur Wärmeenergierückgewinnung und -übertragung von Öl auf Wasser Active EP2405223B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1002872A FR2962529B1 (fr) 2010-07-08 2010-07-08 Dispositif de recuperation d'energie thermique, independant, destine au transfert de chaleur de l'huile vers l'eau

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EP2405223A1 EP2405223A1 (de) 2012-01-11
EP2405223B1 true EP2405223B1 (de) 2016-12-14

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EP11370007.4A Active EP2405223B1 (de) 2010-07-08 2011-07-07 Unabhängige Vorrichtung zur Wärmeenergierückgewinnung und -übertragung von Öl auf Wasser

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FR (1) FR2962529B1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107023487A (zh) * 2017-06-08 2017-08-08 浙江德拉戈机械有限公司 一种高效永磁同步变频螺杆空压机
FR3077104B1 (fr) 2018-01-23 2020-01-03 Airflux Dispositif de recuperation d'energie thermique
CN110397977A (zh) * 2019-08-29 2019-11-01 大连应达实业有限公司 喷射增压高效汽水供热系统

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Publication number Priority date Publication date Assignee Title
DE3028548A1 (de) * 1980-07-28 1982-02-25 Isartaler Schraubenkompressoren GmbH, 8192 Geretsried Vorrichtung zur waermeausnutzung bei kompressoren mit oeleinspritzung
FR2520853B1 (fr) * 1982-01-29 1988-10-14 Cem Comp Electro Mec Systeme de recuperation, avec elevation du niveau d'energie, des calories dissipees par une machine electrique refroidie par un fluide
US4928751A (en) * 1988-05-25 1990-05-29 The Eldon Corporation Computer controlled waste heat reclaimer
DE4337856A1 (de) * 1993-07-13 1995-01-19 Tepper Aufzuege Gmbh & Co Kg Kühlung von Hydraulik-Aufzugsöl
WO2003040641A1 (en) * 2001-11-09 2003-05-15 Aalborg Industries A/S A heat exchanger, combination with heat exchanger and method of manufacturing the heat exchanger

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EP2405223A1 (de) 2012-01-11
FR2962529A1 (fr) 2012-01-13
FR2962529B1 (fr) 2014-03-28

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