Classifications

• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F1/00—Treatment of water, waste water, or sewage
  • C02F1/22—Treatment of water, waste water, or sewage by freezing
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
  • C02F2103/08—Seawater, e.g. for desalination
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2201/00—Apparatus for treatment of water, waste water or sewage
  • C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower or fuel cells
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2209/00—Controlling or monitoring parameters in water treatment
  • C02F2209/02—Temperature
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2209/00—Controlling or monitoring parameters in water treatment
  • C02F2209/40—Liquid flow rate
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2301/00—General aspects of water treatment
  • C02F2301/04—Flow arrangements
  • C02F2301/046—Recirculation with an external loop
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2303/00—Specific treatment goals
  • C02F2303/10—Energy recovery
• • 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
  • F24F5/0046—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 using natural energy, e.g. solar energy, energy from the ground
  • F24F2005/006—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 using natural energy, e.g. solar energy, energy from the ground receiving heat-exchange fluid from the drinking or sanitary water supply circuit
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
  • Y02A20/124—Water desalination
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
  • Y02A20/124—Water desalination
  • Y02A20/131—Reverse-osmosis
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
  • Y02A20/20—Controlling water pollution; Waste water treatment
  • Y02A20/208—Off-grid powered water treatment
  • Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
  • Y02W10/00—Technologies for wastewater treatment
  • Y02W10/30—Wastewater or sewage treatment systems using renewable energies

Definitions

• the present invention relates to the field of desalination of water to be purified, in particular sea or brackish water.
• the invention relates to a combined installation for the generation of heat energy and the desalination of water.
• Distillation consists of raising the temperature of the water to be purified until it boils and recovering the water vapor thus produced. This water vapor is then condensed to obtain water with a lower salt concentration.
• the major drawback of this desalination solution is that it leads to high energy consumption, which makes this type of solution unsuitable for isolated locations where the power supply is a problem.
• Reverse osmosis consists in filtering the salt crystals or impurities contained in the water to be purified by means of membranes whose pores allow the passage of water molecules but retain these salt crystals or these impurities.
• This type of installation requires less energy to purify the water, approximately 3.7 Wh/m3 compared to 15 Wh/m3 for installations using distillation.
• this type of installation requires significant maintenance, in particular because of the deterioration of the membranes.
• ice-forming desalination solution that relies on forming ice crystals of a size to reduce the likelihood of trapping impurities, including salt crystals, inside the crystals. of ice formed. Ice crystals are separated from residual water with high salt concentration and then heated to obtain purified water.
• document DE-2937575 describes a water desalination installation by centrifugation.
• the need for purified water may be accompanied by a need for cold generation.
• generating cold we mean the fact of cooling a place or an installation.
• a seaside hotel complex generally needs purified water but also cooling energy, in particular to supply an air conditioning system.
• the invention proposes a combined installation for heat energy generation and water desalination, the installation comprising:
• an ice slurry generator in fluid communication with the water supply system and configured to generate an ice slurry from water from the water supply system, the slurry comprising ice crystals and a residual liquid,
• a separation system in fluid communication with the generator of ice slurry configured to separate the ice crystals from the residual liquid towards first and second outlets, respectively,
• the pre-cooling system supplying the ice slurry generator, the pre-cooling system comprising a pre-cooling conduit in fluid communication with the first outlet of the separation system to allow pre-cooling of the water supplying the generator by the ice crystals, desalinated water being obtained from the melting of the ice crystals.
• the installation may include a desalinated water distribution pipe connected to an outlet of the pre-cooling system.
• the installation makes it possible to obtain desalinated or purified water from an ice slurry generator.
• the ice slurry corresponds to a fluid comprising ice crystals with a size of less than 1 mm, preferably less than 0.5 mm, so as to obtain a salt concentration of the ice crystals much lower than existing desalination solutions by ice formation.
• the size of the ice crystals inside the ice slurry makes it possible to obtain purified water with a much lower salinity once the ice crystals have melted.
• the installation may comprise a heat energy exchange system with at least one receiver, the exchange system comprising at least one heat exchanger in fluid communication with at least one of the pre -cooling and the second outlet of the separation system for exchanging heat energy originating respectively from the ice crystals or from the residual fluid with said at least one receiver, the heat exchanger being downstream of the pre-cooling system.
• Desalination solutions by ice formation make it possible to recover the heat energy from the ice slurry in order to transfer it to a receiver, such as air conditioning and food or materials. It is thus possible to reduce the energy losses induced by the desalination of water in order to direct this calorific energy towards another application.
• the ice slurry is a fluid allowing effective conservation of heat energy. This desalination solution is therefore particularly suitable for storage.
• This possibility of storage is particularly advantageous because it makes it possible to produce ice crystals at a time when the conditions are preferential and to distribute this calorific energy later when a need is identified. This storage therefore allows much more flexible and optimal operation of the installation.
• the supply system comprises a supply pump intended to be in fluid communication with a source of sea or brackish water to supply the ice slurry generator with sea or brackish water.
• the installation is thus directly supplied with sea or brackish water.
• This sea or brackish water can be taken directly from a marine environment, such as an ocean.
• the second outlet of the separation system is in fluid communication with said source of sea or brackish water to allow the reintroduction of the residual fluid into the source of sea water. or brackish.
• the exchange system comprises at least one heat exchanger in fluid communication with the second outlet of the separation system to exchange heat energy from the residual fluid with said at least one receiver, the exchange system being configured to regulate the quantity of heat energy exchanged with said at least one receiver as a function of a target temperature of the residual fluid downstream of said at least one heat exchanger.
• This regulation is for example carried out by regulating the flow rate of residual fluid inside said at least one exchanger.
• the exchange system comprises at least one heat exchanger in fluid communication with the pre-cooling duct to exchange heat energy from ice crystals or desalinated water obtained by melting ice crystals with said at least one receiver, the exchange system being configured to regulate the amount of heat energy exchanged with said at least one receiver as a function of a target temperature of the desalinated water downstream of said at least one heat exchanger.
• the installation thus makes it possible to meet the needs for desalinated water more precisely by making it possible to regulate the temperature of the desalinated water produced. This regulation is for example carried out by regulating the flow rate of desalinated water inside said at least one exchanger.
• the latter further comprises an ice slurry storage tank arranged between the ice slurry generator and the separation system, the storage tank being configured to regulate the supply of ice slurry to the separation system.
• the storage of the ice slurry allows a more optimized operation of the installation by allowing the distribution of desalinated water and heat energy at a time subsequent to the production of the ice slurry.
• the separation system is a centrifugal separation system.
• the separation system may comprise a first separation system which can be chosen from one of a first centrifugation system or a vacuum filtration system with a Büchner funnel or a filtration system under endless screw pressure, this first separation system supplying fluid communication to a second centrifugal separation system.
• the separation system is arranged above the pre-cooling system and configured so that the separated ice crystals feed the pre-cooling conduit, preferably by gravity.
• a forced drive device can be provided to drive the ice crystals to the pre-cooling system.
• the pre-cooling system comprises a device for wetting the ice crystals supplying the pre-cooling system, the wetting device comprising at least one water spray nozzle, a recovery box water and a supply circuit of said at least one spray nozzle in fluid communication with the recovery tank.
• a circulation loop is thus formed between the water collection tank and the wetting of the ice crystals.
• the wetting device improves the heat exchange between the ice crystals and the water supplying the ice slurry generator.
• the ice slurry generator comprises:
• a refrigerant circuit extending at least partially close to a wall of the tank and configured to at least partially freeze the water present in the tank in contact with said wall
• a scraping device arranged inside the tank and configured to scrape ice crystals generated by the freezing of the water in contact with said wall.
• the ice slurry generator is configured to generate an ice slurry comprising ice crystals having a size equal to or less than 100 ⁇ m.
• FIG. 1 shows a schematic view of one embodiment of a combined installation for heat energy generation and water desalination.
• FIG. 2 shows an interior view of a combined plant ice slurry generator.
• the combined installation 10 comprises an impure water supply system 12, i.e. comprising a salt content above a predetermined threshold.
• the salt content of impure water is for example between 1 and 40 g/l.
• the water supplying the combined installation 10 is for example sea water or brackish water.
• Seawater is defined by a salt concentration greater than 10 g/l. More generally, seawater has an average salt concentration of around 35 g/l.
• Brackish water, also called fresh water, is defined by a salt concentration between 1 and 10 g/l.
• the supply system 12 includes a supply line 14 in fluid communication with a water source 16.
• the supply system 12 includes a supply pump 18 disposed in the supply line 14 to cause the circulation of water inside the supply pipe 14.
• the circulation of sea or brackish water can be carried out by any means other than the drive pump 18 or in addition to this.
• the water source 16 can be a natural marine environment such as an ocean, a sea or even a river or even an anthropized marine environment. In this case, sea or brackish water is taken directly from the marine environment.
• the water source 16 may be a water storage tank.
• the combined plant 10 also includes an ice slurry generator 20 in fluid communication with the supply line 14.
• the ice slurry generator 20 is configured to generate an ice slurry from water from the supply system 12.
• the ice slurry generator 20 is supplied with sea or brackish water by the supply system, in particular by the supply pump 18.
• the ice slurry is a fluid comprising ice crystals whose salt concentration is low and a residual liquid whose salt concentration is high.
• the ice slurry generator 20 is configured to produce ice crystals whose size is less than or equal to 1 mm.
• ice crystal size the largest dimension between two points on the periphery of an ice crystal.
• size means the maximum transverse dimension.
• the ice crystals are preferably produced so as to have a size less than or equal to 500 ⁇ m, more preferably less than or equal to 100 ⁇ m.
• the ice slurry generator 20 is preferably of the scraper type as shown in Figure 2.
• the slurry generator 20 comprises a reservoir 21 to receive water from the supply system 12 and a refrigerant or heat transfer fluid circuit extending at least partially close to a wall 23 of the tank.
• the refrigerant circuit is configured to at least partially freeze the water present in the tank in contact with said wall 23.
• the refrigerant cools the wall 23 of the tank 21 so that the water present or circulating in the reservoir 21 freezes superficially in contact with this wall 23.
• the reservoir is a drum of circular cross-section, the outer wall of which is in contact with the refrigerant and the inner wall is in contact with the water coming from the cooling system. power supply 12.
• the ice slurry generator 20 also comprises a scraping device 27 arranged inside the reservoir and configured to scrape the ice crystals generated by the freezing of the water in contact with said wall 23.
• the frequency at which the ice crystals are scraped makes it possible in particular to vary the size of the ice crystals.
• the scraping device 27 comprises at least one scraping head 29 in contact with the wall 23 and driven in rotation inside the reservoir 21 .
• an ice slurry is formed and consists of ice crystals and a residual liquid that has not given rise to ice crystals.
• the ice slurry formed is approximately at a temperature of -2 to -3°C.
• the ice slurry comprises about 30% ice crystals for about 70% residual liquid.
• the combined installation 10 further comprises a storage tank 22 for the ice slurry generated by the ice slurry generator 20.
• the storage tank 22 is in fluid communication with an outlet of the ice slurry generator. ice slurry 20.
• the storage tank 22 is configured to regulate the supply of ice slurry to a separation system 24. In other words, the storage tank 22 is disposed between an outlet of the ice slurry generator ice 20 and an inlet 25 of the separation system 24.
• the storage tank 22 is preferably thermally insulated and/or refrigerated to prevent the ice crystals from melting during storage, in particular to maintain the ice slurry at a temperature equal to or less than 0° C., preferably at -1°C.
• the combined installation 10 may further comprise a bypass device comprising an inlet connected to the ice slurry generator 20, a first outlet connected to the storage tank 22 and a second outlet connected to the inlet 25 of the system separation device 24.
• the bypass device is configured to allow the circulation of the ice slurry either towards the storage tank 22 or towards the separation system 24, without passing through the storage tank 22.
• the bypass device thus allows a mode operating mode in which the ice slurry does not circulate through the storage tank 22.
• the separation system 24 is configured to separate the ice crystals and the residual liquid present in the ice slurry.
• the ice crystals are directed to a first outlet 26 of the separation system 24 and the residual liquid is directed to a second outlet 28 of the separation system 24.
• the residual liquid at the outlet of the separation system 24 is at a temperature of approximately -2 to -3°C.
• the separation system 24 is for example a centrifugal separation system.
• the separation system 24 is configured to rotate the ice slurry so as to separate the ice crystals from the residual liquid due to their difference in density.
• the separation of the ice crystals from the residual liquid can be carried out in whole or in part by sedimentation. Since the ice crystals are lighter than the residual liquid, the ice slurry tends to form an upper phase comprising the ice crystals and a lower phase comprising the residual liquid.
• the separation system 24 may comprise one or more of the following processes: draining, spin-drying, centrifugation, vacuum filtration with a Büchner funnel, compression under a press of several tens of bars through a sieve, filtration under endless screw pressure...
• the final salinity rate of the desalinated water is lower than that observed after the implementation of a single desalination process.
• Double centrifugation achieves a salinity rate of less than 3 PSU, while vacuum filtration followed by centrifugation or screw press filtration followed by centrifugation achieves a salinity rate less than 1 PSU.
• the second outlet 28 of the separation system 24 is in fluid communication with the water source 16 by means of a discharge pipe 30.
• the residual liquid can be reinjected into the water source 16.
• a residual liquid drive pump 32 can be arranged in the discharge line 30 to drive the residual liquid.
• the combined installation 10 further comprises a heat energy exchange system 36 with a receiver 38.
• This receiver 38 can be a refrigeration installation such as an air conditioning or food or equipment conservation installation.
• the exchange system 36 is in fluid communication with the second outlet 28 of the separation system 24 via the discharge line 30.
• the exchange system 36 comprises at least a first exchanger 34 configured to exchange heat between the residual liquid and the receiver 38.
• the exchange system 36 comprises two first exchangers 34 to take heat energy from the residual liquid.
• the heat exchanger 34 is downstream of the separation system, itself downstream of the pre-cooling system.
• the exchange system 36 is preferably configured to regulate the quantity of heat energy exchanged with said at least one receiver 38 as a function of a target temperature of the residual fluid downstream of the first exchangers 34.
• This target temperature of the residual fluid is preferably determined to be equal to the temperature of the water in the water source 16.
• the installation preferably comprises a residual liquid temperature sensor disposed downstream of the first exchangers 34.
• This regulation is preferably performed by a controller 40 configured to control one or more of the pumps of the combined installation 10.
• the controller 40 is also connected to all of the sensors of the combined installation 10 of way to receive information.
• the regulation of the drive speed of the residual liquid in the discharge pipe 30 makes it possible to regulate the quantity of calorific energy exchanged with the receiver 38 and therefore the temperature of the residual liquid downstream of the first exchangers 34.
• the controller 40 is also configured to control all or part of the combined installation 10.
• the controller 40 is thus connected by wire or wirelessly to all or part of the components of the combined installation 10 to exchange information or instructions.
• the first outlet 26 of the separation system 24 is in fluid communication with a pre-cooling system 42 of the water supplying the ice slurry generator 20.
• the supply line 14 circulates between the water source 16 and the ice slurry generator 20 inside the pre-cooling system 42.
• the water circulating inside the supply pipe 14 is pre-cooled by the ice crystals coming from the separation system 24.
• This pre-cooling makes it possible to lower the temperature of the water coming from the water source before its introduction into the generator of ice slurry 20. A reduced calorific energy is therefore then necessary inside the ice slurry generator 20 to lower the temperature of the water to its freezing temperature.
• the pre-cooling system 42 makes it possible, for example, to lower the temperature of the water coming from the water source 16 down to a temperature of around 0°C.
• the overall consumption of the combined installation 10 is thus reduced because the heat energy used to pre-cool the water comes from the ice generated from the ice slurry.
• this pre-cooling has the second effect of raising the temperature of the ice crystals and therefore starting their melting process.
• the separation system 24 is arranged above the pre-cooling system 42 and configured so that the separated ice crystals supply the pre-cooling system.
• the first outlet 26 of the separation system 24 is in fluid communication with a pre-cooling pipe in which the ice crystals circulate.
• This pre-cooling pipe can be in the form of a chamber 43 in which the ice crystals are inserted.
• the supply of ice crystals is carried out by gravity.
• a constrained drive device may be provided to drive the ice crystals to the pre-cooling system 42.
• the pre-cooling system 42 comprises a device 44 for wetting the ice crystals supplying the pre-cooling system 42.
• the wetting device 44 comprises, in the lower part of the pre-cooling system, a container 48 for collecting water from the melting of the ice crystals.
• the wetting device 44 also comprises at least one spray nozzle 46 of water on the supply pipe 14. These spray nozzles 46 are supplied with water by a supply circuit 50 in fluid communication with the recovery tank. 48 and the projection nozzles 46.
• a wetting pump 56 is arranged in the supply circuit 44 to circulate the water from the recovery tank 48 to the projection nozzles 46.
• the portion of the supply pipe 14 arranged inside the pre-cooling pipe may be in the form of a heat exchanger, for example of the plate or finned tube type.
• the wetting device 44 is arranged at least partially inside the pre-cooling pipe or chamber 43.
• the spray nozzles 46 and the recovery tank 48 are arranged inside the pre-cooling line or chamber 43.
• the pre-cooling pipe is in fluid communication with a distribution pipe 52 connected to a distribution installation 54 of purified water.
• the distribution pipe 52 is thus connected to an outlet of the pre-cooling system.
• the distribution pipe 52 is in fluid communication with the recovery tank 48 so as to recover the desalinated water obtained by the melting of the ice crystals at the level of an outlet 51 of the pre-cooling system 42.
• the pre-cooling or heat exchange between the ice crystals and the water coming from the water source 16 leads to the beginning of a process of melting the ice crystals.
• the fluid at the outlet 51 of the pre-cooling system 42 is thus desalinated water obtained by the melting of ice crystals.
• the heat energy exchange system 36 further comprises at least one second exchanger 58 disposed in the distribution pipe 52.
• Said at least one second exchanger 58 is configured to exchange heat between the desalinated water and the receiver 38.
• This second heat exchanger 58 is downstream of the pre-cooling system.
• Said at least one second exchanger 58 is placed between the distribution installation 54 and the pre-cooling system 42.
• a distribution pump 60 placed in the distribution pipe 52 makes it possible to circulate the desalinated water from the pre-cooling system. - cooling 42 to the distribution installation 54.
• the exchange system 36 is preferably configured to regulate the quantity of heat energy exchanged with said at least one receiver 38 according to a target temperature of the desalinated or purified water downstream of said at least one second exchanger 58.
• This target temperature of the desalinated water is determined by the distribution installation 54 with respect to the need and the application.
• the installation preferably comprises a desalinated water temperature sensor disposed downstream of said at least second exchanger 58.
• This regulation is preferably carried out by the controller 40 configured to control in particular the distribution pump 60.
• the controller 40 is also connected to the desalinated water temperature sensor and preferably configured to communicate information with the installation. distribution 54.
• the regulation of the drive speed of the desalinated water in the distribution pipe 52 makes it possible to regulate the quantity of heat energy exchanged with the receiver 38 and therefore the temperature of the desalinated water in downstream of the second exchanger(s) 58.
• the combined installation 10 may also include an additional exchange circuit 62 to improve the melting of the ice crystals.
• This additional exchange circuit 62 comprises an exchange pipe 64, a pipe portion of which is arranged inside the pre-cooling pipe of the pre-cooling system 42. This pipe portion corresponds to a heat exchanger which may be of the plate type. A heat transfer fluid is placed inside the exchange pipe 64 so as to allow heat exchange between this heat transfer fluid and the ice crystals.
• the pipe portion of the exchange pipe 64 is preferably arranged inside the pre-cooling system 42 downstream of the pipe portion of the supply pipe 14 with respect to the direction of circulation of the ice crystals. In this way, the ice crystals exchange heat with the water coming from the water source 16 before exchanging heat with the heat transfer fluid of the exchange pipe. This improves the pre-cooling of the water supplying the ice slurry generator 20.
• the additional exchange circuit 62 is connected to the receiver 38. More particularly, the exchange line 64 is connected at these two ends to the receiver 38.
• the exchange line 64 thus forms a loop arranged in part inside the pre-cooling system 42 and whose two ends are connected to the receiver 38.
• An exchange pump 68 is arranged in the exchange pipe 64 to circulate the heat transfer fluid between the pre-cooling system 42 and the receiver 38.
• the first 34 and second 58 exchangers are preferably plate exchangers.
• the receiver 38 can comprise one or more receiving installations so that the first 34 and second 58 exchangers and the additional exchange circuit 62 can be connected to the same receiving installation or to different receiving installations.
• the receiver 38 may comprise a decoupling bottle (also called a mixing bottle) connected to one or more of the first 34 and second 58 exchangers and the additional exchange circuit 62 to recover in this decoupling bottle the heat exchanged with the one or more of these first 34 and second 58 exchangers and the pre-cooling system 42.
• This decoupling bottle can be in the form of a liquid reservoir having a plurality of hydraulic connections to connect, on the one hand, to one or more of the first 34 and second 58 exchangers and the pre-cooling system 42 and, on the other hand, with one or more installations having a cooling requirement.
• the combined installation 10 comprises an electrical energy supply device 68 configured in particular to supply electrical energy to all or part of the components of the combined installation 10.
• the electrical energy supply device 68 is configured to supply electrical energy to one or more of the supply 18, wetting 56, distribution 60 and exchange 68 pumps as well as the pre-cooling system 42, the ice slurry generator 20, the system separation 24 and the controller 40.
• the electrical energy supply device 68 is configured to generate electrical energy from a solar energy source.
• the electrical energy supply device 68 preferably comprises one or more photovoltaic panels.
• the combined installation 10 is thus independent of any external electrical network.
• the electrical energy supply device 68 also preferably comprises one or more electrical accumulators for storing electrical energy.
• the electrical power supply device 68 may include a heat engine as well as an alternator to generate electrical energy from the combustion of a fuel.
• a heat recovery system can be arranged at the level of the condenser of the ice slurry generator 20 to transmit this heat energy to any installation having, for example, a need for hot water.

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• Life Sciences & Earth Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Engineering & Computer Science (AREA)
• Environmental & Geological Engineering (AREA)
• Water Supply & Treatment (AREA)
• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Physical Water Treatments (AREA)
• Processing Of Solid Wastes (AREA)
• Engine Equipment That Uses Special Cycles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=73643075

Family Applications (1)

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Family Cites Families (4)

• 2020
  • 2020-09-28 FR FR2009849A patent/FR3114642B1/fr active Active
• 2021
  • 2021-09-28 AU AU2021348337A patent/AU2021348337A1/en active Pending
  • 2021-09-28 IL IL301363A patent/IL301363A/en unknown
  • 2021-09-28 WO PCT/FR2021/051674 patent/WO2022064161A1/fr active Application Filing
  • 2021-09-28 EP EP21794606.0A patent/EP4217317A1/de active Pending

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