EP3705391B1 - Embarcation doté d'un échangeur de chaleur et d'un dispositif de nettoyage par ultrasons de l'échangeur de chaleur - Google Patents
Embarcation doté d'un échangeur de chaleur et d'un dispositif de nettoyage par ultrasons de l'échangeur de chaleur Download PDFInfo
- Publication number
- EP3705391B1 EP3705391B1 EP20160533.4A EP20160533A EP3705391B1 EP 3705391 B1 EP3705391 B1 EP 3705391B1 EP 20160533 A EP20160533 A EP 20160533A EP 3705391 B1 EP3705391 B1 EP 3705391B1
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- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- ultrasound
- ultrasound transducer
- sound
- transducer
- 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.)
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Links
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- 238000002604 ultrasonography Methods 0.000 claims description 60
- 238000004140 cleaning Methods 0.000 claims description 33
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- YTAHJIFKAKIKAV-XNMGPUDCSA-N [(1R)-3-morpholin-4-yl-1-phenylpropyl] N-[(3S)-2-oxo-5-phenyl-1,3-dihydro-1,4-benzodiazepin-3-yl]carbamate Chemical compound O=C1[C@H](N=C(C2=C(N1)C=CC=C2)C1=CC=CC=C1)NC(O[C@H](CCN1CCOCC1)C1=CC=CC=C1)=O YTAHJIFKAKIKAV-XNMGPUDCSA-N 0.000 claims description 2
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/36—Adaptations of ventilation, e.g. schnorkels, cooling, heating, or air-conditioning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
- B08B7/026—Using sound waves
- B08B7/028—Using ultrasounds
-
- 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
- F28D1/00—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, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—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, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/0206—Heat exchangers immersed in a large body of liquid
- F28D1/022—Heat exchangers immersed in a large body of liquid for immersion in a natural body of water, e.g. marine radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G7/00—Cleaning by vibration or pressure waves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/28—Arrangement of offensive or defensive equipment
- B63G8/34—Camouflage
-
- 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
- F28D7/16—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 the conduits being arranged in parallel spaced relation
Definitions
- the invention relates to a watercraft with a heat exchanger, the heat exchanger using water from the environment as a medium. This regularly leads to contamination of the heat exchanger, which means a reduction in both the amount of water flowing through and the amount of heat transferred. On the one hand, this can be due to deposits such as limescale deposits. Much more important, however, are the growth of marine animals, algae, smallpox and the like.
- the heat exchanger In order to remove these deposits from a heat exchanger, the heat exchanger must be mechanically cleaned regularly. To do this, the heat exchanger must be disassembled. If the watercraft is a submarine, the heat exchanger must withstand the diving pressure of the submarine. This also means that a new pressure test is necessary after subsequent assembly, since the heat exchanger represents an interface to the ambient pressure outside the submarine. So every work on a heat exchanger is of course always a certain safety risk for the submarine and its diving ability. Furthermore, this work is extremely difficult and time-consuming, especially in a cramped submarine, and lengthens lay times.
- the object of the invention is to provide a method for watercraft with a heat exchanger in which opening of the heat exchanger for cleaning can be dispensed with.
- the watercraft for the method has a heat exchanger.
- the heat exchanger has a first area for a first fluid and a second area for a second fluid.
- the first fluid can be, for example, a cooling liquid from a boat engine, an air conditioning system, an electronic device, a battery system or any other heat-emitting or heat-absorbing device on board the watercraft.
- the heat-emitting device can also be a further heat exchanger which is connected to a further cooling circuit, the further cooling circuit being filled with a third fluid.
- the first fluid can for example be water but also an oil.
- the first fluid is routinely conducted in a closed circuit within the watercraft.
- the second area can be connected to the boat environment.
- the second area can also be regularly separated from the surroundings of the boat, the water, for example by closing a valve. This is advantageous if the watercraft is out of the water, for example for maintenance or repair purposes must be taken.
- the second area is fluidically connected to the boat environment and therefore does not represent a closed circuit.
- the second fluid is therefore ambient water, for example and in particular sea water.
- the heat exchanger has a first ultrasonic transducer and a second ultrasonic transducer.
- the first ultrasonic transducer and the second ultrasonic transducer are designed to convert electrical energy into ultrasound.
- At least the second ultrasonic transducer is designed to convert ultrasound into electrical energy.
- the second ultrasonic receiver can be used both as a transmitter and as a receiver, detection is also possible in addition to cleaning. In this way, the need for cleaning can also be determined in a locally resolved manner. This is important because the first ultrasonic transducer and the second ultrasonic transducer cannot regularly be used during a mission of the watercraft. A simple time-controlled cleaning cannot therefore be carried out, as is typically provided in commercial cleaning systems.
- ultrasonic cleaners can now be regarded as common in the chemical industry, their use on a watercraft, especially on a submarine, must be absolutely avoided, since the ultrasound generates and destroys cavities, which is associated with sound emissions. Both the emission of the ultrasound per se and, in particular, the sound emission from collapsing cavities must be avoided in order not to make it easier to locate the watercraft.
- the first ultrasonic transducer as a transmitter and the second ultrasonic transducer as a receiver, an analysis can initially be carried out so that cleaning can be carried out as a function of the actual contamination.
- the watercraft is preferably a military watercraft.
- the watercraft is particularly preferably a submarine.
- the heat exchanger has a cylindrical container, the first ultrasonic transducer and the second ultrasonic transducer being arranged outside the container.
- the container and the first ultrasonic transducer are connected to transmit sound by means of a first sound transmitter.
- the container and the second ultrasonic transducer are connected in a sound-transmitting manner by means of a second sound transmitter.
- the heat exchanger represents a connection between the surroundings of the watercraft and the interior of the watercraft.
- the heat exchanger must be able to withstand even the maximum diving pressure of the submarine. This means that the cylindrical outer wall of the container must be designed accordingly.
- An ultrasonic transducer usually has a flat surface of the emitter, which therefore cannot be applied directly to the round wall. Therefore, a component which on the one hand clings optimally to the curve of the cylindrical container and on the other hand has a flat surface for receiving the sound transmitter is optimal.
- the sound transmitter made of metal is preferred, since metal is a very good sound conductor.
- the heat exchanger tank is optimally made of steel.
- the sound transmitter can be made of a different metal, especially since the sound transmitter does not come into contact with water.
- the material of the sound transmitter can be selected to optimize the processing, for example the sound transmitter can be made of aluminum.
- the heat exchanger has a first group of first ultrasonic transducers, all of the first ultrasonic transducers being connected to the container in a sound-transmitting manner via the first sound transducer.
- the heat exchanger also has a second group of second ultrasonic transducers, all of the second ultrasonic transducers being connected to the container in a sound-transmitting manner via the second sound transducer.
- the sound transmitters are rod-shaped and shaped for assembly in the longitudinal direction of the container.
- the heat exchanger has a third group of third ultrasonic transducers, all third ultrasonic transducers being connected to the container in a sound-transmitting manner via a third sound transducer.
- the groups of ultrasonic transducers are arranged in the longitudinal direction of the heat exchanger. An angle of 120 ° ⁇ 20 ° is preferably formed between the groups. The sum of all angles is 360 °.
- the heat exchanger is a tube bundle heat exchanger.
- the first ultrasonic transducer and the second ultrasonic transducer are arranged in the interior of the heat exchanger.
- the heat exchanger is preferably a tube bundle heat exchanger.
- the first ultrasonic transducer and the second ultrasonic transducer can be elongated and arranged in parallel between the tubes of the tube bundle heat exchanger. This has the advantage that the ultrasound is introduced directly into the heat exchanger.
- pressure body feedthroughs have to be provided for the energy supply.
- a heat exchanger can have ultrasonic transducers both on the inside and on the outside.
- the heat exchanger is a tube bundle heat exchanger, further ultrasonic transducers being arranged in the area of the inlet zone and the outlet zone.
- the inlet zone and the outlet zone of a tube bundle heat exchanger are the areas in which fluid is fed into or withdrawn from the tubes lying parallel to one another. These areas have an increased potential for organisms to grow. It is therefore advantageous to introduce more energy into these areas in particular, which can easily be achieved by increasing the number of ultrasonic transducers.
- the number of ultrasonic transducers in the area of the inlet zone and the outlet zone is doubled.
- the ultrasonic transducers are designed to emit at least one frequency of ultrasound in the frequency range from 20 kHz to 1 MHz, preferably from 20 kHz to 120 kHz, particularly preferably from 20 kHz to 50 kHz.
- the ultrasonic transducers are designed to emit different frequencies, the frequencies of the different ultrasonic transducers differing by at most 10%, preferably by at most 2%, particularly preferably by at most 0.5%.
- the frequency of the various ultrasonic transducers differs by 1 Hz multiplied by the number of ultrasonic transducers.
- the slightly different frequencies result in vibrations, which changes the superimposition pattern of the various ultrasonic waves and leads to energy peaks and thus to cavities and thus to the cleaning effect in other spatial areas. In this way, the cleaning effect can be made more uniform over all areas of the heat exchanger.
- the first ultrasonic transducer is designed to emit a first fixed frequency and the second ultrasonic transducer is designed to emit a second, variable frequency.
- the ultrasonic transducers are designed to emit different frequencies, the frequencies of the individual ultrasonic transducers being changed cyclically in a rotating manner.
- the ultrasonic transducers can be controlled in such a way that the phase of the emitted ultrasonic waves can be set.
- the watercraft has a first pressure sensor and a second pressure sensor in the second fluid, the The first pressure sensor is arranged in front of the heat exchanger and the second pressure sensor is arranged behind the heat exchanger. In this way, the pressure loss across the heat exchanger can be determined.
- the growth of limescale layers or microorganisms leads to a reduction in the cross-section through which the air flows and thus to an increased pressure loss.
- the watercraft has a control device for controlling the first ultrasonic transducer and the second ultrasonic transducer, the control device being designed to change the phase position of the emitted ultrasonic waves of the first ultrasonic transducer relative to the emitted ultrasonic waves of the second ultrasonic transducer.
- the control device being designed to change the phase position of the emitted ultrasonic waves of the first ultrasonic transducer relative to the emitted ultrasonic waves of the second ultrasonic transducer.
- different interference patterns are formed, with a maximum of different points being reached in which cavities in particular are formed and thus the cleaning effect is increased.
- the heat exchanger has a length of 2 m to 4 m and a diameter of 0.5 m to 1 m.
- the submarine is particularly preferably a military submarine.
- Adhesions for example lime or microorganisms, influence the sound and, due to shifted phase transitions, also lead to other interferences. In this way, detection by means of ultrasound is comparatively well possible.
- the functionality can then preferably be reversed so that the second ultrasonic transducer works as an emitter and the first ultrasonic transducer as a receiver.
- a third ultrasonic transducer is also preferably used as an emitter and / or receiver.
- This method has the great advantage that it can be carried out continuously and without noise emission. In particular, this can be carried out in addition to the aforementioned method steps.
- step b) ultrasound is imitated by means of a third ultrasonic transducer for cleaning the heat exchanger, the phase relationship of the ultrasonic waves emitted by the first ultrasonic transducer, the second ultrasonic transducer and the third ultrasonic transducer being varied.
- This variation of the phase relationship makes it possible to locally vary energy maxima by superimposing the ultrasonic waves and thus to change the areas of optimal cleaning and thus to completely clean all areas of the heat exchanger.
- a higher energy input into the inlet zone and / or outlet zone of the heat exchanger takes place in step b) by means of ultrasound. Since an increased need for cleaning is to be expected here, it is expedient to enter a particularly large amount of energy in these areas in order to accelerate the cleaning.
- a cleaning fluid is added to the second fluid before or during step b). It is particularly preferably a completely environmentally friendly cleaning fluid, since this is released into the environment unchanged.
- the method is carried out at a non-mission critical time, in particular during transfer journeys or idle times.
- Execution during a transfer trip has the additional advantage that microorganisms are also killed which could otherwise be transported to other areas by the ambient water taken up.
- the ingestion of seawater enables the unwanted transport of biological material and thus the transfer of species to non-species-specific areas. Ultrasonic cleaning kills this material, which means that contamination can be avoided.
- the frequency and / or phase of the ultrasonic waves emitted by the ultrasonic emitters are changed over time and the contamination is determined as a function of frequency and / or phase.
- the cleaning effect is determined and stored as a function of frequency and / or phase through variations, in particular through random variations.
- the system uses the optimum operating point from the last cleaning as the starting point.
- a random adjustment of frequency and / or phase takes place again and the result of the cleaning effect is determined and the dependency is stored. In this way the system can adapt itself.
- the geographical position of the watercraft is also stored and taken into account. Since different conditions exist in different marine biotopes, the vegetation in particular can differ greatly and thus favor different cleaning procedures.
- the method is carried out in an automated manner, in particular the method is carried out on a self-learning system.
- a heat exchanger 10 is shown in longitudinal section.
- Fig. 2 shows a sound transmitter 30 in cross section with an ultrasonic transducer 20.
- the curvature of the sound transmitter 30, with which it can nestle against the outer wall of the heat exchanger 10, is clearly visible.
- a cross section of a heat exchanger 10 is shown in the form of a tube bundle heat exchanger.
- four groups of ultrasonic transducers 20 are arranged on four sound transmitters 30 at right angles to one another.
- Various tubes 40 are arranged in the interior of the heat exchanger 10. A heat transfer occurs between the second fluid flowing in the tubes 40 and the first fluid flowing inside the heat exchanger 10 outside the tubes 40.
- Fig. 4 shows three separate cross-sections through a heat exchanger 10.
- the upper cross-section shows the inlet, the lower cross-section shows the outlet into the pipes 40. Since increased contamination is to be expected here, the number of ultrasonic transducers 20 is doubled in these areas. In order to mount the ultrasonic transducers 20 in these areas, the number of sound transmitters 30 is correspondingly doubled.
- Fig. 3 and Fig. 4 The examples shown each have an angle of 90 ° between the four ultrasonic transducers 20, or an angle of 45 ° in each case for eight ultrasonic transducers 20.
- three ultrasonic transducers 20 can also preferably be used at an angle of 120 °, or six ultrasonic transducers 20 at an angle of 60 °.
- FIG. 11 shows an example in which three ultrasonic transducers 20 are arranged in the interior of the heat exchanger 10 between the tubes 40.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Claims (13)
- Procédé de nettoyage d'un échangeur de chaleur (10) à bord d'une embarcation, une embarcation dotée d'un échangeur de chaleur (10) étant sélectionnée, l'échangeur de chaleur (10) présentant une première zone pour un premier fluide et une deuxième zone pour un deuxième fluide, la deuxième zone pouvant être reliée à l'environnement du navire, et le deuxième fluide étant de l'eau environnante, l'échangeur de chaleur (10) présentant un premier transducteur à ultrasons (20) et un deuxième transducteur à ultrasons (20), le premier transducteur à ultrasons (20) et le deuxième transducteur à ultrasons (20) étant réalisés pour convertir de l'énergie électrique en ultrasons, au moins le deuxième transducteur à ultrasons (20) étant réalisé pour convertir des ultrasons en énergie électrique, le procédé présentant les étapes suivantes consistant à :a) constater un encrassement de l'échangeur de chaleur (10),b) émettre des ultrasons au moyen du premier transducteur à ultrasons et du deuxième transducteur à ultrasons (20) pour nettoyer l'échangeur de chaleur (10), la constatation d'un encrassement de l'échangeur de chaleur (10) à l'étape a) présentant les étapes suivantes consistant à :c) émettre un premier signal ultrasonore par le premier transducteur à ultrasons (20),d) recevoir un premier signal ultrasonore modifié, par le deuxième transducteur à ultrasons (20), caractérisé en ce que l'utilisation du premier transducteur à ultrasons (20) comme émetteur et du deuxième transducteur à ultrasons (20) comme récepteur permet de détecter un encrassement.
- Procédé selon la revendication 1, caractérisé en ce que la constatation d'un encrassement de l'échangeur de chaleur (10) à l'étape a) présente les étapes suivantes consistant à :e) mesurer une première pression au moyen du premier capteur de pression,f) mesurer une deuxième pression au moyen du deuxième capteur de pression,g) déterminer la différence entre la première pression et la deuxième pression,h) comparer la différence avec un seuil de tolérance.
- Procédé selon l'une quelconque des revendications 1 à 2, caractérisé en ce qu'à l'étape b), les ultrasons sont émis au moyen d'un troisième transducteur à ultrasons (20) pour nettoyer l'échangeur de chaleur (10), le rapport de phases des ondes ultrasonores émises par le premier transducteur à ultrasons (20), le deuxième transducteur à ultrasons (20) et le troisième transducteur à ultrasons (20) étant varié.
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'à l'étape b), un apport énergétique supérieur dans la zone d'entrée et/ou la zone de sortie de l'échangeur de chaleur (10) est effectué au moyen d'ultrasons.
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'avant ou pendant l'étape b), un fluide de nettoyage est ajouté au deuxième fluide.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le procédé présente en outre les étapes suivantes consistant à :i) émettre un troisième signal ultrasonore par un troisième transducteur à ultrasons (20),j) recevoir un troisième signal ultrasonore modifié, par le deuxième transducteur à ultrasons (20),k) localiser un encrassement à partir des données reçues aux étapes d) et j).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'échangeur de chaleur (10) présente un récipient cylindrique, le premier transducteur à ultrasons (20) et le deuxième transducteur à ultrasons (20) étant disposés à l'extérieur du récipient, le récipient et le premier transducteur à ultrasons (20) étant reliés en transmission acoustique au moyen d'un premier transmetteur de son (30), le récipient et le deuxième transducteur à ultrasons (20) étant reliés en transmission acoustique au moyen d'un deuxième transmetteur de son (30).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'échangeur de chaleur (10) présente un premier groupe de premiers transducteurs à ultrasons (20), l'ensemble des premiers transducteurs à ultrasons (20) étant relié au récipient en transmission acoustique par l'intermédiaire du premier transmetteur de son (30), l'échangeur de chaleur (10) présentant un deuxième groupe de deuxièmes transducteurs à ultrasons (20), l'ensemble des deuxièmes transducteurs à ultrasons (20) étant relié au récipient en transmission acoustique par l'intermédiaire du deuxième transducteur de son (30).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'échangeur de chaleur (10) présente un troisième groupe de troisièmes transducteurs à ultrasons (20), l'ensemble des troisièmes transducteurs à ultrasons (20) étant relié au récipient en transmission acoustique par l'intermédiaire d'un troisième transmetteur de son (30), les groupes de transducteurs à ultrasons (20) étant disposés dans la direction longitudinale de l'échangeur de chaleur (10), un angle de 120° ±20° étant formé entre les groupes, respectivement.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier transducteur à ultrasons (20) et le deuxième transducteur à ultrasons (20) sont disposés à l'intérieur de l'échangeur de chaleur (10).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'échangeur de chaleur (10) est un échangeur de chaleur à faisceau tubulaire, le premier transducteur à ultrasons (20) et le deuxième transducteur à ultrasons (20) étant réalisés de manière allongée, le premier transducteur à ultrasons (20) et le deuxième transducteur à ultrasons (20) étant disposés en parallèle entre les tubes de l'échangeur de chaleur à faisceau tubulaire.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'embarcation présente un premier capteur de pression et un deuxième capteur de pression dans le deuxième fluide, le premier capteur de pression étant disposé devant l'échangeur de chaleur (10) et le deuxième capteur de pression étant disposé derrière l'échangeur de chaleur (10).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'embarcation présente un dispositif de pilotage pour piloter le premier transducteur à ultrasons (20) et le deuxième transducteur à ultrasons (20), le dispositif de commande étant réalisé pour modifier la position de phase des ondes ultrasonores émises du premier transducteur à ultrasons (20) le par rapport aux ondes ultrasonores émises du deuxième transducteur à ultrasons (20).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019203069.6A DE102019203069A1 (de) | 2019-03-06 | 2019-03-06 | Wasserfahrzeug mit einem Wärmetauscher und einer Ultraschallreinigung des Wärmetauschers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3705391A1 EP3705391A1 (fr) | 2020-09-09 |
EP3705391B1 true EP3705391B1 (fr) | 2021-12-01 |
Family
ID=69770396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20160533.4A Active EP3705391B1 (fr) | 2019-03-06 | 2020-03-03 | Embarcation doté d'un échangeur de chaleur et d'un dispositif de nettoyage par ultrasons de l'échangeur de chaleur |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3705391B1 (fr) |
DE (1) | DE102019203069A1 (fr) |
ES (1) | ES2904915T3 (fr) |
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KR102469317B1 (ko) * | 2022-04-15 | 2022-11-18 | 황필선 | 해수열교환기의 폐각류 부착 방지 및 제거를 위한 장치 |
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DE102021121611B3 (de) | 2021-08-20 | 2022-12-22 | HASYTEC D&P GmbH | Verfahren zum Freihalten einer für anorganische oder organische Ablagerungen anfälligen Oberfläche |
CN114417688B (zh) * | 2022-01-26 | 2024-06-21 | 重庆大学 | 一种基于声发射的阀门内漏速率检测方法 |
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DE3908573A1 (de) * | 1989-03-16 | 1990-09-20 | Laukien Guenther | Verfahren zum betreiben getauchter unterseeboote und unterseeboot |
FI127711B (en) * | 2016-05-13 | 2018-12-31 | Altum Tech Oy | METHOD FOR CLEANING THE APPLIANCE |
-
2019
- 2019-03-06 DE DE102019203069.6A patent/DE102019203069A1/de not_active Withdrawn
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2020
- 2020-03-03 EP EP20160533.4A patent/EP3705391B1/fr active Active
- 2020-03-03 ES ES20160533T patent/ES2904915T3/es active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102469317B1 (ko) * | 2022-04-15 | 2022-11-18 | 황필선 | 해수열교환기의 폐각류 부착 방지 및 제거를 위한 장치 |
Also Published As
Publication number | Publication date |
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DE102019203069A1 (de) | 2020-09-10 |
ES2904915T3 (es) | 2022-04-06 |
EP3705391A1 (fr) | 2020-09-09 |
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