EP3353473A1 - Dispositif de production d'eau chaude sanitaire par récupération de chaleur des eaux usées, une installation et un procédé de production associé - Google Patents
Dispositif de production d'eau chaude sanitaire par récupération de chaleur des eaux usées, une installation et un procédé de production associéInfo
- Publication number
- EP3353473A1 EP3353473A1 EP16770718.1A EP16770718A EP3353473A1 EP 3353473 A1 EP3353473 A1 EP 3353473A1 EP 16770718 A EP16770718 A EP 16770718A EP 3353473 A1 EP3353473 A1 EP 3353473A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hot water
- wastewater
- circuit
- water
- domestic hot
- 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- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 315
- 239000002351 wastewater Substances 0.000 title claims abstract description 162
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 49
- 238000011084 recovery Methods 0.000 title claims abstract description 32
- 230000037452 priming Effects 0.000 claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 238000003860 storage Methods 0.000 claims abstract description 14
- 238000012546 transfer Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 32
- 238000001914 filtration Methods 0.000 claims description 14
- 238000011144 upstream manufacturing Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 3
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- 239000003643 water by type Substances 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 2
- 239000010797 grey water Substances 0.000 description 27
- 230000006870 function Effects 0.000 description 19
- 230000001105 regulatory effect Effects 0.000 description 13
- 230000033228 biological regulation Effects 0.000 description 12
- 239000010865 sewage Substances 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 11
- 230000005484 gravity Effects 0.000 description 11
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- 241000894006 Bacteria Species 0.000 description 1
- 206010021639 Incontinence Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 230000005540 biological transmission Effects 0.000 description 1
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- 239000010802 sludge Substances 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
- F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/54—Water heaters for bathtubs or pools; Water heaters for reheating the water in bathtubs or pools
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- 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
- F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C2001/005—Installations allowing recovery of heat from waste water for warming up fresh water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
- F24D2200/20—Sewage water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
Definitions
- the present invention relates to a device for producing domestic hot water by heat recovery of wastewater, an installation and an associated production method.
- the field of the invention relates to the optimization of hot water production and is part of sustainable development tending to reduce the use of energy.
- the invention will find particular application for the recovery of heat energy from wastewater in individual dwellings for showers or other hot water consumption point or in public facilities for various hot water consumption points. shower types ....
- the heat of wastewater is an energy available in large quantities in urban areas and therefore close to needs.
- the recovery of their thermal energy also called “cloacothermy”
- Cloacothermy is based on the same technical principles as those of ground-source geothermal energy, with the difference that the calories come from our own discharges of water, evacuated through a network sanitation.
- hot water needs are such that the energy required for its production can far exceed that of heating.
- the optimization of the production of hot water is therefore essential as well as that of heating.
- wastewater also known as greywater.
- wastewater has an average temperature of between 10 ° C and 20 ° C, up to 40 ° C directly at the outlet of certain evacuations, for example shower.
- This poorly known caloric incontinence is the source of the 500 to 600 liters of wastewater consumed daily by an average family and then evacuated through the pipes.
- Document CN2879027U a wastewater thermal energy recovery device including the passage of wastewater in a water collector and then in a cold-water preheating exchanger, is known, the preheated water then circulates towards a pump heat using a heat transfer fluid.
- This type of device is used to generate hot water that can be used at multiple points of consumption from different sources of wastewater.
- the different wastewater is stored in the wastewater collector. Wastewater is used when the production of hot water requires the recovery of extra calories.
- Document EP 2 775 243 A1 discloses a device for producing hot water by recovering thermal energy from wastewater. However, this installation involves remanently placing an evaporator in a wastewater bath.
- the present invention proposes for this purpose a device for producing domestic hot water by heat recovery of wastewater comprising a wastewater evacuation circuit, a heating circuit of cold water sanitary water domestic hot water, a first heat exchanger disposed on the wastewater circuit configured to ensure the transfer of heat from the wastewater to domestic cold water, resulting in preheated cold water, a heat pump comprising an evaporator and a condenser configured to heat cold water preheated to domestic hot water.
- the evaporator is arranged on the downstream and series wastewater circuit of the first exchanger and the condenser is disposed on the cold water heating circuit downstream and in series of the first exchanger.
- the device preferably does not include hot water storage or wastewater.
- the device comprises a priming circuit for initiating the operation of the heat pump.
- the priming circuit is in operation before the establishment of a stabilized flow of the wastewater stream and / or before the temperature of the domestic hot water produced has reached a set temperature of domestic hot water . This priming circuit makes it possible to shorten the temperature rise time of the water when the tap is opened, for a very modest overconsumption of water.
- the present device allows optimal recovery of wastewater heat with limited heat losses.
- the series assembly of a first heat exchanger and the condenser of the heat pump makes it possible to optimize the heating by transferring energy from the wastewater to the sanitary cold water and then by increasing the temperature of the heat pump. water preheated by the heat pump.
- this preheating makes it possible with limited heat pump heat output to have optimized heating.
- the lack of storage of either wastewater or domestic hot water avoids the loss of heat from the water during storage.
- the production of hot water is advantageously synchronized with its use. In the same way the production of hot water is synchronized with the evacuation of the waste water.
- the absence of storage also makes it possible to arrange the device as close as possible to the point of discharge of the wastewater and the point of consumption of hot water.
- the device is arranged in a decentralized manner that is to say one per point of consumption and not centralized for several points of consumption or several parts of the house.
- This invention makes it possible to produce domestic hot water in a direct and decentralized manner with exceptional energy performance.
- the device of the invention can achieve a coefficient of performance exceeding 7.5; be one energy saving of 86.7% compared to an electric water heater, ideal moreover without thermal losses.
- This performance is achieved through an optimal architecture of the device to both minimize the amount of energy required and the temperature levels at which it is exchanged.
- This characteristic architecture allows a heating advantageously fully thermodynamic in a range of operation perfectly suitable for heat pumps as widely developed in the building, both in terms of power level and temperature level.
- the absence of stock makes it possible to limit thermal losses to a minimum and advantageously the absence of additional heating makes it possible to obtain optimal energy performance without increasing the subscription to the energy supplier.
- the invention in another aspect, relates to an installation comprising the device as described above and a single point of consumption and preferably a single point of wastewater production.
- the invention in another aspect, relates to a method for producing domestic hot water by heat recovery of wastewater using the device as described above comprising two successive stages of heating the cold water.
- Figure 1 Diagram of an installation according to the invention, the device is not detailed.
- Figure 2 Diagram of an installation according to the invention with the detailed device according to a first embodiment.
- Figure 3 Partial diagram of an installation according to a second embodiment with lifting of wastewater.
- FIG. 4 Diagram of an installation according to the invention with the detailed device according to the second embodiment of FIG.
- Figure 5 Graph illustrating the temperatures of the different streams (domestic hot water, sanitary cold water and waste water) in the heating circuit of cold water in domestic hot water.
- Figure 6 Graph showing the rates of hot water consumption and wastewater production.
- Figure 7 Graph illustrating the law regulating the boot rate in the boot circuit.
- Figure 8 Graph illustrating the correction of the power factor of the heat pump as a function of the temperature of the wastewater at the outlet of the device
- Figures 9 and 10 illustrate the simulation results of an installation according to the invention in the case of a flow rate of hot water adjustable by the user with a heat pump compressor with adjustable power or variable speed.
- Figure 1 1 graph illustrating the flow of the priming circuit as a function of the difference between a hot water set temperature and the actual temperature of the hot water.
- Figures 12 and 13 illustrate the simulation results of an installation according to the invention in the case of a flow of hot water adjustable by the device with a heat pump compressor with or without power adjustment.
- Figure 14 illustrates a variant of the invention.
- the invention relates to a device for producing domestic hot water by heat recovery of wastewater comprising
- a first exchanger disposed on the wastewater circuit configured to ensure the transfer of heat from the wastewater to cold sanitary water resulting in preheated cold water
- a heat pump comprising an evaporator and a condenser, configured to heat the cold water preheated to domestic hot water
- the evaporator is arranged on the wastewater circuit downstream and in series of the first exchanger, and
- the condenser is disposed on the downstream and series heating circuit of the first exchanger so as to heat the preheated water from the first exchanger, and the device does not include hot water storage or wastewater.
- the device comprises a priming circuit configured to supply sanitary cold water to the evaporator of the heat pump.
- the priming circuit is configured to temporarily supply sanitary cold water to the evaporator of the heat pump.
- the priming circuit is configured to supply sanitary cold water to the evaporator of the heat pump before the establishment of a stabilized flow of the wastewater stream.
- the device comprises a wastewater flow sensor in the wastewater circuit intended to control the establishment of a stabilized flow of the wastewater stream and thus the operation of the priming circuit.
- the priming circuit is configured to supply sanitary cold water to the evaporator of the heat pump before the temperature of the domestic hot water produced has reached a set temperature of domestic hot water.
- the device comprises a domestic hot water temperature sensor produced for controlling the adequacy between the temperature of domestic hot water produced and a target domestic hot water temperature and thus the operation of the priming circuit.
- the initiation circuit comprises means for regulating the flow rate.
- the flow regulation means comprise at least one of a connection on a sanitary cold water supply pipe, a shut-off valve, a flow sensor, a flow regulator and advantageously a connection. on the wastewater circuit arranged upstream of the evaporator.
- the device is intended to supply a single point of consumption of domestic hot water
- the device is configured to produce domestic hot water synchronously with the use of domestic hot water.
- the device comprises a domestic hot water consumption sensor configured to activate the production of domestic hot water.
- the use sensor comprises at least one of a contactor on a point of consumption of hot water, a sensor on a point of consumption of hot water, a pressure switch arranged on the cold water heating circuit.
- a contactor on a point of consumption of hot water a sensor on a point of consumption of hot water
- a pressure switch arranged on the cold water heating circuit.
- the device comprises a temperature sensor on the heating circuit downstream of the heat pump so as to determine the outlet temperature of the domestic hot water produced.
- the device comprises a temperature sensor on the wastewater circuit downstream of the heat pump so as to determine the outlet temperature of the wastewater.
- the device comprises a flow control sensor arranged on the heating circuit downstream of the heat pump.
- the first exchanger is configured to ensure a countercurrent flow of wastewater and sanitary cold water at said first exchanger.
- the device comprises a lifting pump on the wastewater circuit upstream of the first exchanger.
- a filtration device on the wastewater circuit upstream of the first exchanger may be present.
- the filtration device preferably comprises a tank connected to a wastewater inlet pipe, a tube having a first end immersed in the tank and a second end connected to the lifting pump.
- the filtration device advantageously comprises a settling pot connected to an outlet of the lifting pump and to a connecting pipe to the first exchanger.
- the filtration device may comprise a first overflow pipe from an upper zone of the tank and connectable to a drain, a second overflow pipe connecting an inlet mouth of the inlet pipe to the drain, and a valve configured to selectively connect to the drain one of: an outlet of the filter pot, an outlet sewage stream.
- the device comprises a receiver having a siphon function configured to receive the wastewater and in which the first exchanger and the evaporator dip.
- the device does not include an auxiliary heating device.
- the heat pump comprises a variable speed compressor or fixed; advantageously the compressor is with or without power adjustment.
- the invention in another aspect, relates to an installation for the production of domestic hot water by heat recovery of wastewater comprising the device as described above and a single point of consumption of domestic hot water produced.
- the installation comprises a single point of wastewater production.
- the installation comprises a sewage pump upstream of the device.
- the installation is configured so that the production of domestic hot water is synchronized with the use of domestic hot water.
- the installation is configured so that the production of domestic hot water is simultaneous with the production of wastewater.
- the invention in another aspect, relates to a method for producing domestic hot water by heat recovery of wastewater using the device as described above comprising two successive stages of heating the cold water.
- the method comprises the following steps: a) preheating the domestic cold water by the first exchanger and b) heating the preheated water obtained in step a) by a heat pump.
- the method comprises a step of priming the heat pump by activating a priming circuit configured to supply sanitary cold water to the evaporator of the heat pump before the establishment of a stabilized flow rate. wastewater in the sewage system.
- the method comprises a step of priming the heat pump by activating a priming circuit configured to supply sanitary cold water to the evaporator of the heat pump before the temperature of the domestic hot water produced has reached a DHW setpoint temperature.
- the present invention is a device for recovering heat energy from wastewater to produce hot water.
- the device according to the invention is integrated in an installation, also object of the invention.
- the installation is shown schematically in FIG.
- the installation comprises a point of use of domestic hot water 13.
- the installation comprises a single point of use, for example here is shown a shower.
- the installation comprises a point of wastewater production 15, advantageously, the installation includes a single point of wastewater production, here represented by the evacuation of the shower water.
- the production of hot water is said to be “decentralized” since production is associated with a single point of consumption 13.
- the point of consumption 13 of the installation according to the invention is without accumulation, that is to say that the installation is intended for a point of consumption 13 not accumulating hot water type bath or sink with plug of closing.
- the installation further comprises the device 100 according to the invention which is not detailed in FIG. 1.
- the device 100 comprises two water flow inlets, respectively of wastewater 19 and of sanitary cold water 21 and two outlets of flow of water, respectively wastewater 20 and domestic hot water 23.
- the device comprises a power supply 25.
- this device 100 is installed as close as possible to the hot water consumption point 13 and the wastewater generation point 15.
- the space requirement is rather limited, which means that the device can be installed directly in the room of the room. point of consumption of hot water 13 and wastewater production 15.
- the volume of the device is of the order of 20cm by 30cm by 50cm for a volume of thirty liters.
- the device operates advantageously with a very small difference in altitude between the inlet and the outlet of the wastewater, according to an embodiment advantageously incorporating a lifting pump 29, this difference can be zero.
- the sound level of the device in operation is low, preferably less than 40 dB.
- the device according to the invention comprises a wastewater evacuation circuit 1 and a cold water heating circuit in domestic hot water.
- the terms circuits include the pipes / tubes / fittings allowing the circulation of the different streams of water.
- the device comprises a first heat exchanger 2, also called recuperative heat exchanger, placed on the wastewater circuit 1 downstream of the wastewater production point 15.
- the first exchanger 2 comprises a sanitary cold water inlet.
- the flow of wastewater and sanitary cold water is countercurrent in the first exchanger 2 so as to improve heat transfer.
- This first exchanger 2 is intended to preheat the sanitary cold water by transferring the heat energy of the wastewater.
- the preheated sanitary cold water flows from the first heat exchanger 2 and flows into the heating circuit of the sanitary cold water.
- the device advantageously comprises a heat pump 3 which can also be called a refrigeration loop.
- the heat pump 3 comprises an evaporator 4 and a condenser 5.
- the heat pump 3 comprises between the evaporator 4 and the condenser 5 a compressor 26 and an expansion member 27.
- the compressor 26 can be at a speed fixed or variable speed.
- the evaporator 4 and the condenser 5 are heat exchangers.
- the heat pump 3 circulates a refrigerant.
- the refrigerant exchanges thermal energy with another fluid; in the evaporator 4, the refrigerant exchanges heat energy with the wastewater to heat up, in the condenser 5, the refrigerant exchanges the heat energy with the cold water preheated to increase its temperature.
- the capacitor 5 is advantageously arranged on the circuit for heating cold water with domestic hot water downstream of the first heat exchanger 2.
- the capacitor 5 is arranged in series with the first heat exchanger 2. This arrangement makes it possible to optimize the device by sub-dimensioning the 3.
- the capacitor 5 makes it possible to significantly increase the temperature of the preheated water coming from the first heat exchanger 2.
- the evaporator 4 is advantageously arranged on the wastewater discharge circuit 1 downstream of the first heat exchanger. 2. In this way, the evaporator 4 recovers thermal energy from the wastewater for transmission to the preheated water via the refrigerant.
- the heat pump 3 comprises, according to an optional embodiment, an intermediate heat exchanger disposed between the evaporator 4 and the condenser 5 internal to the refrigerant loop of the heat pump 3 so as to optimize the recovery of sensible thermal energy from the heat exchanger. waste.
- the heat pump 3 may optionally comprise an expansion energy recovery system and / or a refrigerant reserve and / or a filter and / or a set of solenoid valves and / or an economizer exchanger.
- the set of solenoid valves makes it possible in particular to stop the heat pump, to seal the different parts of the refrigerant circuit between them to prevent the migration of fluid. At restart, this allows the heat pump to be more reactive.
- other means for raising the temperature can be provided in the device, for example a magnetocaloric heat pump or by sorption (adsorption or absorption), or thermoelectric heat pump.
- the device according to the invention does not include storage of wastewater or hot water storage.
- the device according to the invention is configured to produce hot water synchronously to the consumption of hot water.
- the production of hot water is called "direct", it is temporally synchronized with the use, it intervenes at the same time, they are simultaneous. Synchronized or simultaneous means that the production and use are performed simultaneously, however according to the invention the production and use may have an offset of less than one minute preferably of the order of 30 to 20 seconds without delivering in question the principle of the invention.
- the direct production of domestic hot water allows the device to operate at the lowest hot water temperature possible, especially in the context of the invention where the production device is located close to the point of use.
- the device according to the invention does not include a supplementary heating element. Indeed, the production of hot water being direct and the device according to the invention being optimized to have a good general arrangement that allows to make the most of the heat recovery on greywater, it is not necessary to provide a complementary water heating element type water heater for example.
- the instantaneous power consumption of the device is 3000W maximum.
- the device according to the invention advantageously comprises a priming circuit
- the priming circuit 6 is configured to introduce sanitary cold water into the wastewater circuit 1 upstream of the evaporator 4 and advantageously downstream of the first exchanger 2.
- the evaporator 4 and thus the pump 3 can operate directly from the identified hot water usage signal.
- the temperature rise time of the water is shortened and the overconsumption of water very modest. This provision makes it possible not to use an additional electric heating or other.
- the priming circuit 6 is actuated as soon as the hot water tap is opened at the point of consumption 13 (that is to say generally as soon as the detection of the use of domestic hot water) and / or according to a possibility until a preferentially stabilized and preferably predetermined waste water flow circulates in the wastewater evacuation circuit 1 .
- the device comprises control means (or controller (s)) for measuring and / or operating operating parameters (such as domestic hot water consumption, wastewater temperature and wastewater flow rate).
- the device comprises for example a flow sensor of the wastewater flow in the wastewater discharge circuit 1.
- the sensor determines the flow rate of the wastewater stream in the wastewater discharge circuit 1 and advantageously the control means make it possible to determine its adequacy with a flow of wastewater of setpoint that is to say predetermined.
- the priming circuit 6 is actuated until the difference between the temperature of the domestic hot water at the outlet of the device and the set temperature for the domestic hot water is zero As illustrated in Figure 1 1.
- the device comprises a temperature sensor 28 for determining the temperature of the domestic hot water output of the device.
- control means make it possible to determine the suitability with a set, ie predetermined, sanitary hot water temperature.
- the priming circuit 6 comprises a connection 8 on the sanitary cold water inlet duct 7 in the device.
- the ignition circuit 6 advantageously comprises a control means (or actuator) intended to activate or deactivate the ignition circuit 6.
- the control means is at least one stop valve 9 arranged on the ignition circuit 6.
- the priming circuit advantageously comprises a control means or means for regulating the flow rate of the cold water flow by way of example at least one sensor 1 1 and 10 flow regulator.
- the priming circuit 6 is connected fluidically by a connection 12 to the wastewater circuit 1 upstream of the evaporator 4.
- the priming circuit 6 brings sanitary cold water to the evaporator 4 before it is fed by the wastewater.
- the priming circuit 6 allows the start of the device when a consumption of hot water is required to use the cold water as cold source.
- the means for regulating the flow rate 10 of the sanitary cold water in the priming circuit 6 makes it possible to progressively increase the power of the device and to manage the cold source transition of the evaporator 4 between the cold water Sanitary priming and sewage in steady state.
- the device according to the invention comprises temperature sensors for controlling the temperature of the different streams of water circulating in the device.
- the device advantageously comprises a temperature sensor 28 for the domestic hot water stream 23 at the outlet of the device, downstream of the heat pump 3, so as to identify the outlet temperature and possibly adjust it.
- the device comprises a temperature sensor 17 at the inlet of the device for the stream of sanitary cold water inlet 21, upstream of the first exchanger 2 and the priming circuit 6.
- This temperature sensor 17 allows to limit the risk of freezing in the device in case of sanitary water of very low temperature.
- the device comprises a temperature sensor 16 disposed on the wastewater stream 20 at the outlet of the device, preferably downstream of the evaporator 4.
- the production of domestic hot water is simultaneous with the consumption of domestic hot water.
- the device advantageously comprises a domestic hot water consumption sensor so as to detect a withdrawal of hot water and trigger the actuation of its production.
- the device comprises a pressure switch 14 located on the circuit for heating the cold water with domestic hot water downstream of the heat pump 3, preferably on the hot water outlet stream 23.
- D Other sensors located at the point of consumption 13 can be used as a sensor directly at the point of consumption, for example the hot water tap, a contactor on the tap or a position sensor on the tap.
- the device comprises a thermostat located on the domestic hot water stream 23, downstream of the heat pump 3, more precisely the condenser 5.
- This component provides flow control in temperature function. It may be replaced by a flow regulator 18 connected by the regulation to the temperature measured downstream of the condenser 5 on the flow 23 by the temperature sensor 28.
- the device advantageously comprises a controller or regulator of the device not shown in the figures.
- This regulating member is intended to control the device according to the invention and in particular the set temperature of the hot water flow at the outlet 23 of the device.
- This regulator is preferably accessible to the user for viewing and / or modifying the operating parameters of the device.
- the installation comprises a sewage lifting element.
- the lifting element can also be integrated in the device as such.
- the lifting of wastewater makes it possible to use better exchangers whose loss of load would be unacceptable in the context of a gravity system.
- the sewage lifting allows the device to adapt to almost any situation since the modification of the existing wastewater evacuation network 33 is reduced to a minimum, the flow in the evacuation network 33 remains almost identical to the initial flow without the device according to the invention.
- the lift makes it possible to deport the device according to the invention and to free it from gravity constraints, in particular as regards the minimum difference in height required.
- This arrangement leaves the flow in the evacuation network 33 free in case of maintenance of the device and makes possible the combination with another system for producing domestic hot water.
- the present invention can be fully installed on the cold water pipe for installing or keeping in parallel a hot water pipe from a balloon or a boiler for example
- the device comprises a sewage lifting pump 29.
- the lifting pump 29 is disposed on the incoming flow of the waste water 19 in the device, more precisely in the first exchanger 2.
- FIGS. 3 and 4 there is illustrated a siphon 30 at the base of the wastewater production point 15.
- a connection 31 advantageously disposed in the siphon 30 makes it possible to separate the wastewater produced in two streams: a flow entering 19 into the device 100 of the invention and a wastewater discharge stream 32 in an evacuation network 33.
- the device comprises a device for detecting wastewater. presence of water in the siphon 30, for example by reading the level. This detection member is configured to activate or not the lift pump 29 located between the connection 31 and the first exchanger 2 of the device.
- the regulation being made so that the flow of wastewater passes completely into the device 100 during a hot water demand.
- the flow of wastewater downstream of the device is connected downstream of the siphon 30 to the wastewater evacuation network 33, advantageously located on a downwardly sloping portion of the network 33 to avoid parasitic recirculation to the connection 31 making the water intake for the device.
- the outflow of the wastewater 20 from the device returns to the discharge network 33 via the connection 34.
- an anti-return valve is placed on the initial wastewater discharge network 33 between the two connections 31 and 34. .
- the device is equipped with wastewater treatment means of the incoming stream 19.
- the processing means comprise, for example at least filter and / or grinder.
- the treatment of the incoming wastewater stream 19 makes it possible to use exchangers having efficiencies greater than those of the exchangers generally used directly on the wastewater. Indeed, the fouling being less after treatment, the characteristic dimensions of the exchangers can be reduced without risk of clogging. The overall performance is improved by the use of such exchangers.
- FIG. 14 A more complex embodiment is illustrated in FIG. 14, as a variant of FIG. 4.
- the passage of gray water in the exchangers induces a gradual fouling of these.
- the invention preferably comprises a filter device upstream of the first changer 2.
- the hydraulic architecture described below allows for several alternative or cumulative actions:
- This hydraulic solution has an advanced integration in the circuit realizing the main function of heat recovery.
- the branch dedicated to priming also makes it possible to perform the cleaning of the exchangers.
- it provides passive safety by automatically short-circuiting the system in the event of a fault, by means of an overflow or a bypass. It also allows to degas the flow of wastewater.
- the hydraulic assembly preferably adapts to the system of this invention in its version comprising a lifting pump. It then includes the following additional elements:
- a reservoir 206 (which is small because it does not provide storage) allowing the pump located directly downstream to suck a completely liquid fluid.
- This tank 206 is provided
- a gray water inlet to about 1/3 (between 20% and 40% of the height) of its height (pipe 205), from the shower drain or the hand washer 15;
- a dip tube 207 through the top of the tank and down to about 1 cm from the bottom (preferably between 0.5 cm and 2 cm). This tube is connected in the upper part to the lifting pump 29
- a pressure sensor 208 situated at the bottom of the tank and making it possible to evaluate its filling level. This information makes it possible to maintain this constant level by regulating the flow of the lifting pump.
- settling pot This is arranged directly downstream of the lifting pump 29.
- the gray water filtered by the settling pot is directed towards the recuperator 2 while the polluting particles are stored momentarily in this pot and periodically drained by an opening in part low (pipe 213)
- a 3-way mains valve 203 for periodically evacuating the impurities filtered by the settling pot.
- the flow being gravity, the valve is full passage. It makes it possible to orient the impurities gravitarily towards the junctions 204 then 241 and toward the drain 32. This valve also makes it possible to carry out the cleaning circuits.
- Heat recovery circuit valve 10 closed, valve 203 position 20 to 201 (recovery), pump 29 activated
- valve 10 open, valve 203 position 20 to 201 (recovery) and pump 29 stopped
- the tap water is then entirely directed to the pipe 22 and the point 12, then upside down in the exchanger 2 and the pipe 21 1 to the pot 209.
- the pump is stopped and equipped with an anti return, the flow of water is oriented at the bottom by the emptying via the conduit 201, the valve (open) 203 and joined the gravity flow circuit from point 204.
- the flow then passes through the point 241 and is evacuated through the drain 32.
- circuit configuration 3 identical to circuit 2 up to point 12, then the flow is directed to exchanger 4 and to the valve
- circuit configuration 4 (priming): this circuit combines circuits 1 and 2.
- the city water flow 7 joins the gray water flow at point 12 and the mixture of the two is directed towards the exchanger 4
- the overflow tank 206 is only used when a failure prevents pumping of the water from this tank.
- the gray water flows in the pipe 210 and joins the drain by the points 204 and 241.
- Short-circuit 212 is an alternative to overflow.
- the latter fills up, as well as the pipe 205 until the level of the point 30 is reached. Since the gray water can no longer flow in line 205, it is evacuated after line 212 to point 241 and drain 32.
- the following components should preferably be arranged at strictly decreasing altitude: overflow 209; overflow outlet (line) 213; valve 203; valve outlet line for connection 201; connection point 204; connection point 241; the drain 32.
- the greywater pump 29 is advantageously provided with a functional anti-return system even when the pump is stopped. If this is not the case, an external check valve must be placed downstream of the pump. It must be able to circulate a flow of laden water such as gray water out of the shower.
- This pump is preferably variable flow regulated by a pressure sensor 208 located at the base of the tank.
- the point 30 connects the pipe from the siphon 200 to the downstream pipes 205 and 212.
- the flow being advantageously gravity, this point is arranged so that the entire flow from the siphon 200 is oriented towards the pipe 205. The latter must then be connected to the low point of the connection 30.
- the pipe 212 is used only in case of overflow of the pipe 205.
- the gray water pipe 200 connecting the connection point 204 to the connection point 241 is preferably such that, the flow being gravity, the point 241 is disposed at an altitude lower than the point 204.
- the valve 203 is advantageously a full-bore zone 3-way valve for draining the settling pot 209 or connecting the flow of the pipe 20 to the connection point 204.
- the drain flow being gravity, the elements 209, 203 and 204 are arranged at decreasing altitude.
- the gray water connection point 204 is at the junction between the upstream pipes 201, 210 and the downstream pipe 202 leading to the connection point 241.
- the flow being gravitational from the overflow of the reservoir 206, the point 204 is disposed at an altitude lower than this overflow.
- the upstream flows (lines 201 and 210) must be arranged in the upper part of this connection point 204 so that the only gravitational output possible is the line 202.
- the gray water pipe 205 makes it possible to supply the reservoir 206 with the water coming from the shower tray. This pipe is downhill between the connection point 30 and the reservoir 206. On the other hand, it must, if necessary, be below the optional conduit 212.
- the reservoir 206 preferably has a position must be such that the altitude of the overflow disposed in the upper lateral position is lower than that of the shower bung. If there is a bypass 212, this overflow can be removed.
- the tube 207 immersed in the reservoir 206 allows a totally liquid supply of the pump 29.
- the pressure sensor 208 in the lower part of the reservoir 206 makes it possible to know the level of filling.
- the settling pot 209 is preferably provided with an air trap at the top.
- the gray water pipe 210 connects the overflow of the reservoir 206 to the connection point 204.
- the pipe 21 1 of gray water connects the settling pot 209 to the exchanger 2.
- the pipe 212 is optional and connects the connection points 30 and 241. This pipe can be downhill from 30 to 241. It can replace the overflow of the tank.
- the hot water produced exceeds the desired target. It is then a defect outside the device that must lead to the security of it.
- the device advantageously comprises a bypass of sanitary cold water to the outlet stream of domestic hot water 23 produced.
- a flow control valve assures the dosing of the amount of cold water sufficient to cool the hot water produced by the device in order to lower it to the temperature setpoint chosen, unless there is has a lack of cold water flow as mentioned above.
- the method for producing domestic hot water by heat recovery of the wastewater comprises at least two steps of heating the water.
- the first step is a sensible heat recovery by circulating the sanitary cold water, advantageously against the current, wastewater in a first exchanger 2 which can be of low efficiency, typically 60%.
- Another subsequent step is the heating of cold water at intermediate temperature, also called water preheated in domestic hot water by the condenser 5 of a heat pump 3 whose evaporator 4 is located on the wastewater circuit 1 .
- the increase in the temperature of the sanitary cold water entering the device increase in two times represented by two inclinations of the curve corresponding to the passages of the water to be heated first in the first exchanger 2 and then in the condenser 5.
- the graph illustrates the temperature of the wastewater between the inlet and the outlet in the device. At the level of the condenser 5 and the evaporator 4 is shown in dotted line the temperature of the refrigerant circulating in the heat pump 3.
- the user opens the hot water faucet.
- This hot water withdrawal information is transmitted to the device according to the invention.
- the valve 9 is activated and the flow regulator 10 adjusts the flow rate of the domestic cold water circulating in the ignition circuit 6 as a function of the difference between the setpoint and the actual value of the the hot water temperature, advantageously measured at the outlet of the device by the temperature sensor 28.
- the compressor 26 is turned on. If the compressor 26 is at variable power, the starting power setpoint depends on the cold water temperature at the inlet of the device, advantageously measured by the temperature sensor 17.
- Wastewater begins to flow through the sewage system 1, usually the arrival of sewage occurs less than a minute after opening the hot water faucet.
- the speed reference changes according to the difference between the set point and the measurement of the hot water temperature, as well as according to the safety against freezing in the wastewater circuit 1 downstream of the evaporator 4.
- valve 9 is closed, the device then operates in steady state:
- the flow rate is set by the device.
- the flow of domestic hot water can be set by the user and the compressor power setpoint depends on the latter.
- the user closes the hot water faucet. End of hot water withdrawal. This information is transmitted to the device.
- the compressor 26 is cut and the valve 9 of the ignition circuit remains closed
- the device according to the invention has at least two operating modes depending on the compressor 26 of the heat pump 3 chosen:
- variable flow set by the user is meant that the flow of domestic hot water produced by the device is set by the user when he uses the hot water at the consumption point 13 and is meant fixed flow operation set by the device that the flow of domestic hot water produced by the device is set by device and that the user can not change the flow of hot water at the point of consumption 13.
- the priming circuit 6 is not necessary because the compressor 26 can adapt its flow rate as a function of the flow rate of the wastewater entering the heat pump 3. Its activation accelerates still the temperature rise of hot water from the withdrawal of hot water at the point of consumption 13.
- the efficiency of the recovery device according to the invention is in particular functions of external conditions.
- the temperature of the cold water that itself depends on several factors, including the location and the time of year.
- the device according to the invention is configured to operate whatever the temperature of cold sanitary water, preferably above 6 ° C; the minimum temperatures are the most critical, the device is advantageously sized for cold water temperatures between 6 and 10 ° C.
- Domestic hot water at the point of consumption 13 is generally between 37 and 39 ° C, especially for shower use.
- the temperature of the wastewater depends on several factors related in particular to the geometry and the configuration of the water point, as well as to the characteristics of the place.
- the decrease in hot water temperature results from the passage of hot water in a colder environment before reaching the wastewater network.
- This passage can be considered as a heat exchanger for the purpose of dimensioning the device according to the invention.
- the regulation laws for the device according to the invention are described below, the flow of hot water produced is regulated by the user in dynamic mode (via the opening of the valve for example).
- the parameters being variable during this phase, the computation is carried out by dynamic simulation, that is to say that it describes the evolution of the parameters as a function of time.
- the regulated magnitudes are 2 in number: a) Power factor of compressor 26 (or proportional speed)
- the temperature limit of the wastewater is given by a direct acting law coupled to a derivative action.
- the direct acting law takes the form of the first quarter of a sinusoid whose abscissae are the limiting temperature and the tilting temperature. Above a so-called temperature of rocking temperature, no corrective action is made to the power factor of the compressor 26 as illustrated in FIG. 8.
- FIG. 8 illustrates the correction of the power factor of the compressor 26 as a function of the temperature. wastewater at the outlet of the device.
- the minimum temperature is 0 ° C and the rocking temperature is here 3 ° C.
- the derivative action consists in observing the variations in the wastewater temperature at the outlet of the device, preferably by the temperature sensor 16, in order to anticipate the necessary correction of the power factor.
- the response of this derived function is processed by an integral delay function to stabilize the device.
- a dynamic thermal simulation study makes it possible to observe the behavior of the complete device with its own regulation during a "cold" start. For this, the performance of a compressor 26 commercially available have been reproduced. Similarly, the modeled exchangers have comparable performances to commercially available products, for example with an efficiency of 60% for the first exchanger 2.
- This quantity is regulated as a function of the difference between the hot water set point temperature and the measurement of this temperature by the temperature sensor 28 on the hot water outlet stream 23 of the device.
- a maximum flow rate constant of the priming circuit is set at manufacture. As shown in Figure 7, when this difference is greater than 20 K equivalents at 20 ° C, the maximum firing rate is provided. Between 20K and 1K, it is gradually reduced to 0. The slope of this flow law must be continuous, to promote the stability of the device regulation.
- FIGS 9 and 10 illustrate the different temperatures and flow rates in the device according to the operating mode of the compressor with power adjustment.
- the hot water temperature at the outlet of the device stabilizes after 28 s. This delay corresponds to the introduction of the priming flow and then the flow of wastewater and finally the gradual reduction of the priming flow rate illustrated in FIG. 10.
- the priming circuit 6 becomes place (Fig. 10) and the temperature of hot water produced increases very rapidly.
- the priming flow rate decreases and the temperature of the preheated water after the first exchanger 2 increases gradually as well as the temperature of the hot water produced.
- the regulated magnitudes are 2 in number:
- the advantage of this case lies in the fact of being able to use a compressor 26 at a single speed.
- This type of compressor 26 has very good performance and may have a commercial advantage.
- a variable speed compressor may also be suitable.
- the device In steady state, the device aims to provide hot water at the temperature requested by the user.
- the regulation acts on the flow of hot water produced: an increase in this flow rate reduces the temperature of hot water because the thermal power supplied to the device by the heat pump 3 is almost constant. Conversely, a decrease in the flow of hot water increases its temperature. In this way, the flow of water is no longer defined by the user but by the device.
- the transient start phase can be realized in two different ways. In both cases, the delay of occurrence of the wastewater flow rate illustrated in FIG. 6 necessitates the use of priming circuit 6 to accelerate the start-up process. - The nominal flow is generated from the start of the withdrawal, the temperature of the water at the point of consumption 13 is first cold and then gradually warms up.
- the priming is done through the flow of cold water to the first heat exchanger 2. For each given cold water temperature, there is a sufficient minimum flow of priming to avoid the risk of freezing in the first exchanger 2. In the case of the system presented in the example below and for cold water at 9 ° C, an initial priming flow rate of 101 / min is sufficient to avoid the risk of freezing. Apart from the parameter of the maximum value, the flow control law is the same as in the case of the device where the flow rate is set by the user and using a variable speed compressor 26.
- the performance table presented below shows that there is a single hot water flow for a given device, a given cold water temperature and a given hot water temperature.
- the values of such a table are calculated from the performance of the device components, and can also be measured on a real device.
- this correction makes it possible to avoid overheating by increasing the setpoint flow if the set temperature is exceeded.
- the appearance of this correction function is illustrated in FIG. 11, where the slope of the first part of the curve depends in particular on the power of the compressor installed, its value is typically -1.5 for a flow rate expressed in L / min. This correction is added to the flow initially fixed by calculation.
- FIGS. 12 and 13 illustrate the start-up operation of a device equipped with a single-speed compressor, the flow rate of which is set to nominal at start-up. This value is deliberately underestimated in this example to illustrate the operation of the flow rate correction as a function of the hot water temperature produced.
- the hot water temperature at the outlet of the device stabilizes after 16s.
- This delay corresponds to the introduction of the priming flow and then the flow of wastewater and finally the gradual reduction of the flow rate
- the delay is shorter than in the previous operating mode illustrated in FIGS. 9 and 10 because the flow of hot water is not maximum from the beginning of the withdrawal but only increases once the setpoint temperature is reached.
- the seeding rate is set up, the reduction of the priming flow rate in favor of the wastewater flow is faster than in the previous operating mode. In this case, the boot rate is stronger at the beginning, resulting in a faster decrease.
- the rate of decrease of this flow rate is also related to the general dynamics of the device since this flow rate is inversely calibrated to the rise in temperature of the domestic hot water.
- the flow is initially limited to reach very quickly the set temperature requested by the user. The flow then increases gradually to the nominal point.
- domestic hot water and hot water temperature flow In this case, the domestic hot water flow is the addition of the nominal flow rate with a proportional and integral correction in relation to the difference between the temperature setpoint and the measured temperature. This law must be particularly reactive.
- the energy study makes it possible to define the power factor necessary for the hot water temperature to be reached with the flow rate desired by the user.
- the coefficients of performance are of the same order as for the case of the fixed speed compressor.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1558903A FR3041420B1 (fr) | 2015-09-22 | 2015-09-22 | Dispositif de production d'eau chaude sanitaire par recuperation de chaleur des eaux usees, une installation et un procede de production associe |
PCT/EP2016/071733 WO2017050623A1 (fr) | 2015-09-22 | 2016-09-14 | Dispositif de production d'eau chaude sanitaire par récupération de chaleur des eaux usées, une installation et un procédé de production associé |
Publications (1)
Publication Number | Publication Date |
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EP3353473A1 true EP3353473A1 (fr) | 2018-08-01 |
Family
ID=55072843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16770718.1A Withdrawn EP3353473A1 (fr) | 2015-09-22 | 2016-09-14 | Dispositif de production d'eau chaude sanitaire par récupération de chaleur des eaux usées, une installation et un procédé de production associé |
Country Status (3)
Country | Link |
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EP (1) | EP3353473A1 (fr) |
FR (1) | FR3041420B1 (fr) |
WO (1) | WO2017050623A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6671484B2 (ja) * | 2016-09-08 | 2020-03-25 | 三菱電機株式会社 | ヒートポンプ装置 |
EP3715727B1 (fr) | 2019-03-29 | 2022-11-30 | Mitsubishi Electric R&D Centre Europe B.V. | Dispositif de récupération de chaleur d'eaux usées à plusieurs étapes assisté par pompe à chaleur |
EP3715728B1 (fr) | 2019-03-29 | 2022-11-02 | Mitsubishi Electric R&D Centre Europe B.V. | Dispositif de récupération de chaleur d'eaux usées à plusieurs étages assisté par une pompe à chaleur avec taille réduite de la pompe à chaleur |
CN110986365B (zh) * | 2019-11-19 | 2021-06-29 | 上海乾进节能科技有限公司 | 一种燃气热水器水量伺服器 |
NL2025464B1 (en) | 2020-04-30 | 2021-11-18 | Dewarmte B V | A thermal energy recovery system |
CN112254204B (zh) * | 2020-10-23 | 2021-11-26 | 扬州市生态科技新城杭集中小企业服务中心有限公司 | 一种节能型商用淋浴房 |
CN114322306A (zh) * | 2021-12-21 | 2022-04-12 | 江苏恒信诺金科技股份有限公司 | 洗浴废水源与地源组合制取生活热水的系统 |
CN115962576A (zh) * | 2022-12-30 | 2023-04-14 | 江苏恒信诺金科技股份有限公司 | 实现废水通路清洗的洗浴废水制热水系统及其清洗方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CH233376A (de) * | 1943-05-21 | 1944-07-31 | Sulzer Ag | Einrichtung zur Abwärmeausnützung mittelst Wärmepumpe. |
AU532576B2 (en) * | 1979-06-01 | 1983-10-06 | Ventline Manufacturing (Pty.) Ltd. | Energy transfer system |
IT1119442B (it) * | 1979-10-30 | 1986-03-10 | Fiat Ricerche | Procedimento per il riscaldamento di acqua utilizzata in un apparecchio inserito in un circuito idraulico domestico ed apparecchiatura atta a realizzare tale procedimento |
IT1206541B (it) * | 1981-04-21 | 1989-04-27 | Aspera Spa | Gruppo a pompa di calore per il riscaldamento di un liquido partico larmente per l ottenimento di acqua calda |
CN2615598Y (zh) * | 2003-04-10 | 2004-05-12 | 上海交通大学 | 热回收式热泵型淋浴用热水器 |
FR2975472B1 (fr) * | 2011-05-18 | 2013-06-21 | Ass Pour La Rech Et Le Dev De Methodes Et Processus Ind Armines | Procede de production d'un debit d'eau chaude et systeme associe |
BR132012019493E2 (pt) * | 2011-08-11 | 2018-03-06 | Augusto Purchio Brucoli Fernando | Box sanitário recuperador do calor da água quente descartada durante o banho. |
FR2979977B1 (fr) * | 2011-09-14 | 2018-03-30 | Zodiac Pool Care Europe | Dispositif et procede de chauffage d'une eau de bassin |
-
2015
- 2015-09-22 FR FR1558903A patent/FR3041420B1/fr not_active Expired - Fee Related
-
2016
- 2016-09-14 WO PCT/EP2016/071733 patent/WO2017050623A1/fr active Application Filing
- 2016-09-14 EP EP16770718.1A patent/EP3353473A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
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FR3041420B1 (fr) | 2019-08-16 |
FR3041420A1 (fr) | 2017-03-24 |
WO2017050623A1 (fr) | 2017-03-30 |
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