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US20120159980A1 - Device for recovering heat from wastewater, thermal system including such a device, and method - Google Patents

Device for recovering heat from wastewater, thermal system including such a device, and method Download PDF

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Publication number
US20120159980A1
US20120159980A1 US13/322,665 US201013322665A US2012159980A1 US 20120159980 A1 US20120159980 A1 US 20120159980A1 US 201013322665 A US201013322665 A US 201013322665A US 2012159980 A1 US2012159980 A1 US 2012159980A1
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US
United States
Prior art keywords
heat
heat exchanger
wastewater
recovery device
compartment
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.)
Abandoned
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US13/322,665
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English (en)
Inventor
Alain Moure
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Individual
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Individual
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Publication of US20120159980A1 publication Critical patent/US20120159980A1/en
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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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F24D11/0235—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy
    • F24D11/025—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy contained in waste 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
    • 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
    • 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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0206—Heat exchangers immersed in a large body of liquid
    • F28D1/0213—Heat exchangers immersed in a large body of liquid for heating or cooling a liquid in a tank
    • 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
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • 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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/035—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other with U-flow or serpentine-flow inside the conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • 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
    • 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 concerns a device for recovering heat from wastewater, of the type comprising a vat for holding wastewater and a heat exchanger having at least one heat exchange plate comprising two opposite surfaces and an inner pipe for circulation of a heat transfer fluid between the two surfaces.
  • Said heat recovery devices are used for example in a thermal system including a heat pump to bring the heat recovered from the wastewater to the refrigerant of the heat pump and thereby improve the yield thereof.
  • DE 32 14 357 describes a device of this type comprising cylindrical heat exchange plates, arranged concentrically so that the wastewater circulates radially from inside to outside alternately passing above and below the plates.
  • the invention proposes a heat recovery device of the aforementioned type, in which the or each plate is arranged in a heat exchange compartment of the vat so that the wastewater circulates substantially vertically from bottom upwards along the two opposite surfaces of the or of each plate between an inlet of the heat exchange compartment located in the lower portion and an outlet of the heat exchange compartment located in the upper portion.
  • the heat recovery device comprises one or more of the following characteristics taken alone or in any possible technical combination:
  • the heat exchanger comprises at least one group of plates arranged in one same heat exchange compartment of the vat;
  • the inner pipes of the plates of one group of plates, arranged in one same heat exchange compartment, are in parallel fluid connection so that they can be fed with heat transfer fluid;
  • the plates of one group of plates are arranged parallel to one another, each pair of adjacent plates defining a throughway between their opposite surfaces for the circulation of wastewater;
  • the vat comprises a baffle to force circulation of the wastewater downwardly towards the inlet of the or of each heat exchange compartment;
  • the vat comprises at least one decanting compartment comprising at least two baffles forming a siphon upstream of the heat exchange compartment;
  • the vat comprises two side walls that are substantially planar and parallel delimiting between them an inner volume extending along a longitudinal direction between the inlet and the outlet of the vat, the or each plate extending transversally between the two side walls;
  • the vat is of general parallelepiped shape.
  • the invention also concerns a thermal system
  • a heat pump including a compressor, a condenser, a pressure reducer and an evaporator connected in series via a heat pump circuit for the circulation of a refrigerant, the evaporator also being connected to a heat recovery device according to any of the preceding claims for the transfer of the heat recovered from the wastewater towards the refrigerant of the heat pump.
  • the invention further concerns a method for recovering heat from wastewater, in which the wastewater is caused to circulate substantially vertically from bottom upwards along two opposite surfaces of a heat exchange plate comprising an inner pipe for the circulation of a heat transfer fluid between the two opposite surfaces of the heat exchange plate.
  • the wastewater is caused to circulate substantially vertically from bottom upwards along two opposite surfaces of each heat exchange plate of a group of heat exchange plates each comprising an inner pipe for the circulation of a heat transfer fluid between the two opposite surfaces of the heat exchange plate, the exchange plates having parallel fluid connection for supplying heat transfer fluid thereto.
  • FIG. 1 is a schematic view of a heating system with a heat pump integrating a heat recovery device according to the invention
  • FIG. 2 is a longitudinal section view of the heat recovery device along II-II in FIG. 3 ;
  • FIG. 3 is a cross-sectional view of the heat recovery device along II-II in FIG. 2 .
  • the thermal system 2 illustrated in FIG. 1 comprises a heat pump 4 and a heat recovery device 6 to recover heat from wastewater, and a transfer circuit 7 for transferring the heat recovered by the heat recovery device to the heat pump 4 .
  • the heat pump 4 allows the transfer of recovered heat by means of the heat recovery device 6 towards an application requiring the supply of heat such as a heating system of a dwelling, a heating system for a swimming-pool, a system for heating household water . . . .
  • the heat pump 4 comprises a compressor 8 , a condenser 10 , a pressure reducer 12 and an evaporator 14 , connected via a heat pump circuit 16 for the circulation of a refrigerant.
  • the heat pump circuit 16 forms a closed loop for the circulation of the refrigerant passing successively in the compressor 8 , the condenser 10 , the pressure reducer 12 and the evaporator 14 and then returning to the compressor 8 .
  • the heat recovery device 6 comprises a vat 18 holding the wastewater and a heat exchanger 20 arranged in the vat 18 .
  • the vat 18 is located in a wastewater evacuation circuit through which the wastewater E passes, derived for example from a collective or individual dwelling.
  • the transfer circuit 22 allows the circulation of a heat transfer fluid. It comprises piping connecting the exchanger 20 with the evaporator of the heat pump 4 so as to form a closed loop 23 successively passing through the heat exchanger 20 and the evaporator 16 , and a pump 24 to force circulation of the heat transfer fluid that is arranged in the closed loop 23 between the exchanger 20 and the evaporator 14 .
  • the transfer circuit 22 further comprises a by-pass 26 to bypass the exchanger 20 , that is fed in the closed loop 23 between the evaporator 14 and the exchanger 20 and leads to between the exchanger 20 and the pump 24 , and a three-way control valve 27 to control the circulation of heat transfer fluid in the exchanger 20 and/or in the bypass 26 .
  • the transfer circuit 22 comprises a temperature sensor 28 arranged at the inlet of the evaporator 14 to detect the temperature of the heat transfer fluid entering the evaporator 14 .
  • the sensor 28 is connected to the control valve 27 controlling the latter in relation to the measurement signal provided by the sensor 28 .
  • the transfer circuit 22 comprises a regulating reservoir 29 connected to the loop 23 between the control valve 27 and the pump 24 .
  • the condenser 10 of the heat pump 4 is crossed by a heating circuit 30 of the heating system of a dwelling, in which a heat transfer heat transfer fluid circulates e.g. water.
  • a heat transfer heat transfer fluid circulates e.g. water.
  • the condenser 10 is crossed by a gas e.g. air for a heating system using the forced circulation of hot air.
  • the refrigerant of the heat pump 4 circulates in the heat pump circuit 16 under the action of the compressor 8 . It successively passes through the compressor 8 in which it is heated by being compressed, the condenser 10 in which it transfers calories to a heat source (in this case the heat transfer fluid of the heating circuit 30 ) the pressure reducer 12 in which it expands by cooling, then the evaporator 14 in which it collects calories derived from a cold source (here the calories recovered by the heat recovery device 6 and transferred by the transfer circuit 22 ).
  • a heat source in this case the heat transfer fluid of the heating circuit 30
  • the pressure reducer 12 in which it expands by cooling
  • the evaporator 14 in which it collects calories derived from a cold source (here the calories recovered by the heat recovery device 6 and transferred by the transfer circuit 22 ).
  • the heat transfer fluid of the heat recovery circuit 22 circulates under the effect of the pump 24 successively passing through the heat exchanger 20 in which it takes up calories from the wastewater, then the evaporator 14 in which it transfers calories to the refrigerant of the heat pump circuit 16 .
  • the heat transfer fluid of the heating circuit 30 circulates in the condenser 10 taking calories from the refrigerant of the heat pump circuit 16 .
  • the control valve 27 is commanded in relation to the inlet temperature of the evaporator 14 so that part of the heat transfer fluid bypasses the exchanger 20 to maintain the temperature of the heat transfer fluid at the inlet to the evaporator 14 within a temperature range allowing the satisfactory functioning of the heat pump 4 , for example at a temperature of between 23° C. and 25° C.
  • the vat 18 is of general parallelepiped shape. It comprises two end walls 32 ( FIG. 2 ) spaced along a longitudinal direction L and extending transversally, two side walls 34 ( FIG. 3 ) spaced transversally and substantially parallel to the longitudinal direction, and a bottom 36 delimiting an inner volume of the vat 18 .
  • ⁇ upper >>, ⁇ lower >> and ⁇ vertical >> are to be construed in relation to the vat in position of use, such as illustrated in FIGS. 2 and 3 .
  • the longitudinal direction L is substantially horizontal.
  • the vat 18 comprises an inlet 38 for the wastewater arranged on one end wall 32 , and an outlet 40 for the wastewater arranged on the other end wall 32 .
  • the inlet 38 and the outlet 40 are located in the upper portion of the vat 18 , i.e. in the vicinity of the upper edges of the end walls 32 .
  • the vat 18 comprises baffles 42 arranged transversally between the side walls 34 and delimiting within the vat 18 a decanting compartment 44 for the wastewater, and a heat exchange compartment 46 , the wastewater successively passing through the latter.
  • the heat exchange compartment 46 is arranged downstream of the decanting compartment 44 in the direction of circulation of the wastewater between the inlet 38 and the outlet 40 .
  • the decanting compartment 44 comprises a decanting siphon formed of two baffles 42 delimiting a downward section 48 extending from the inlet 38 towards the bottom 36 , and an upward section 50 rising from the bottom 36 towards the upper portion of the vat 18 .
  • the decanting compartment 44 comprises an outlet section 52 formed by a third baffle 42 and descending from the upward section 50 of the siphon towards an inlet 54 of the heat exchange compartment 44 located in the lower portion, adjacent to the bottom 36 .
  • the vat 18 comprises a filter 56 extending through the upward section 50 of the siphon, in the vicinity of the upper end thereof.
  • the exchanger 20 is arranged in the heat exchange compartment 46 . It comprises a group of exchange plates 60 , each of substantially planar and parallelepiped shape. Each plate 60 comprises two opposite surfaces 62 ( FIG. 2 ) and an inner pipe 64 ( FIG. 3 ) for the circulation of heat transfer fluid, making its way between the opposite surfaces 62 .
  • Each exchange plate 60 has a lower edge 66 spaced distant from the bottom 36 , and an upper opening 68 for the circulation of wastewater through the plate.
  • Each exchange plate 60 extends substantially vertically and transversally between the side walls 34 . As illustrated in FIG. 3 , each exchange plate 60 has its side edges in contact with the side walls 34 .
  • the exchange plates 60 are spaced away from each other and, together with the end walls 32 and the baffle 42 delimiting the heat exchange compartment 46 , define parallel circulation throughways for the wastewater from the inlet 54 of the heat exchange compartment 44 to the outlet thereof located in the upper portion, and which here is the outlet 40 of the vat 18 .
  • the exchanger 20 comprises a feed pipe 70 via which the heat transfer fluid arrives, and an evacuation pipe 72 through which the heat transfer fluid leaves.
  • the inner pipe 64 of each of the exchange plates 60 arranged in the same heat exchange compartment 46 is fed by the feed pipe 70 and leads into the evacuation pipe 72 . Therefore the inner pipes 64 of the exchange plates 60 arranged in the same heat exchange compartment 46 are in parallel fluid connection for the circulation of a heat transfer fluid.
  • the bottom 36 comprises drainage openings 74 , one at the bottom of the decanting compartment 44 and the other at the bottom of the exchange compartment 46 .
  • the vat 18 comprises a drainage circuit 75 to recover any deposits at the bottom of the vat 18 via the drainage openings 74 and to re-inject the wastewater collected with the deposits downstream of the vat 18 .
  • the drainage circuit comprises a valve 76 controlling each drainage opening 74 , evacuation piping 78 connecting the evacuation openings 74 with a storage tank 80 , a return pipe 82 connecting the storage tank 80 with the outlet 40 , and a pump 84 arranged on the return pipe 82 .
  • the wastewater arrives in the vat 18 via its inlet 38 with more or less regular flow. It circulates through the vat 18 under the siphon effect caused by the baffles 42 . It circulates firstly in the decanting compartment 44 which allows turbulence to be set up to homogenize the temperature and free the wastewater of elements in suspension. These remain in the form of deposits on the bottom 36 , in the elbow formed between the downward section 48 and the upward section 50 , under gravity.
  • the filter 56 allows the filtering of any residual elements.
  • the outlet section 52 allows the wastewater to return down to the bottom 36 , to flow over the exchange plates 60 from bottom upwards.
  • the wastewater circulates substantially vertically from bottom upwards along the two opposite surfaces of each exchange plate 60 , and then leaves the vat 18 by circulating towards the outlet 40 through the openings 68 .
  • the opening of the valves 76 of the drainage circuit 75 allows the evacuation of deposits formed at the bottom 36 , chiefly at the bottom of the decanting compartment 44 , and possibly at the bottom of the exchange compartment 46 .
  • the deposits are collected in the storage tank 80 , the wastewater being re-injected downstream of the vat 18 .
  • the heat recovery device 6 allows circulation of wastewater with limited pressure loss, without perturbing the flow thereof, and also allows efficient heat exchange between the wastewater and the heat transfer fluid circulating in the exchange plates 60 .
  • the decanting compartment allows homogenization of the wastewater and the removal of elements in suspension, which promotes subsequent heat exchange.
  • the shape of the vat 18 and the arrangement of the exchange plates 60 allow efficient heat exchange in a reduced volume.
  • the width of the vat as measured between its side walls 34 is preferably less than 90 cm, in particular less than 60 cm. This facilitates its installation in individual swellings, in particular for passing of the vat 18 through doorways.
  • the vat may comprise several exchange compartments arranged in parallel or in series, the heat exchanger comprising a group of exchange plates immersed in each exchange compartment.
  • the heat recovery device can be used to supply heat to a heat pump or to any other type of system for the production of heat.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
US13/322,665 2009-05-26 2010-03-16 Device for recovering heat from wastewater, thermal system including such a device, and method Abandoned US20120159980A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0953454 2009-05-26
FR0953454A FR2946133B1 (fr) 2009-05-26 2009-05-26 Dispositif de recuperation de chaleur a partir d'eaux usees, systeme thermique comprenant un tel dispositif et procede.
PCT/FR2010/050467 WO2010136681A2 (fr) 2009-05-26 2010-03-16 Dispositif de récupération de chaleur à partir d'eaux usées, système thermique comprenant un tel dispositif et procédé

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US20120159980A1 true US20120159980A1 (en) 2012-06-28

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US13/322,665 Abandoned US20120159980A1 (en) 2009-05-26 2010-03-16 Device for recovering heat from wastewater, thermal system including such a device, and method

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US (1) US20120159980A1 (pt)
EP (1) EP2435762B1 (pt)
JP (1) JP2012530891A (pt)
CN (1) CN102893093A (pt)
AU (1) AU2010252881A1 (pt)
BR (1) BRPI1008208A2 (pt)
CA (1) CA2763827C (pt)
CY (1) CY1118752T1 (pt)
DK (1) DK2435762T3 (pt)
DO (1) DOP2011000368A (pt)
ES (1) ES2617661T3 (pt)
FR (1) FR2946133B1 (pt)
HR (1) HRP20170356T1 (pt)
HU (1) HUE032033T2 (pt)
IL (1) IL216625A0 (pt)
LT (1) LT2435762T (pt)
MX (1) MX2011012678A (pt)
PL (1) PL2435762T3 (pt)
PT (1) PT2435762T (pt)
RU (1) RU2011152869A (pt)
SG (1) SG176966A1 (pt)
SI (1) SI2435762T1 (pt)
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EP3054251A1 (de) * 2015-02-03 2016-08-10 Johannes Paul Ennemoser Wärmetauscher für abwasser mit pufferspeicherung
WO2018080386A1 (en) * 2016-10-25 2018-05-03 Jlo Development Ab Recovery system and method for recovery of thermal energy from waste water
CN108168073A (zh) * 2018-01-22 2018-06-15 无锡恒业电热电器有限公司 蓄热式风洞实验电加温器系统
CN113896266A (zh) * 2021-11-15 2022-01-07 江苏科技大学 一种压缩引射复合式热泵污水处理系统及其运行方法
WO2022031154A1 (en) 2020-08-05 2022-02-10 Grīnbergs Kaspars A system for indoor microclimate control and a method for control thereof
US11493276B2 (en) * 2019-04-29 2022-11-08 Noventa Energy Partners Inc. Feed water supplementary thermal exchange apparatus, system and method
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RU2659840C1 (ru) * 2017-04-25 2018-07-04 Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский государственный университет туризма и сервиса" (ФГБОУ ВО "РГУТИС") Стенд для исследования параметров функционирования бытовых тепловых насосов
FR3071044B1 (fr) 2017-09-08 2020-03-13 Biofluides Systeme de recuperation de chaleur des eaux usees
CZ308327B6 (cs) * 2019-02-26 2020-05-13 Jan Topol Způsob využití tepelné energie komunálních odpadních vod z obytných domů a kondominií a zařízení k provádění způsobu
KR102586353B1 (ko) * 2021-04-08 2023-10-19 고려대학교 산학협력단 배플형 판형 열교환기 및 이를 포함하는 유기랭킨사이클 증발기
CN116086016B (zh) * 2023-03-07 2025-06-27 河南科技大学 一种双温洁净水与生活热水联产的制冷制热系统
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US20150047579A1 (en) * 2012-03-01 2015-02-19 Waste Heat Recovery Ltd. Heat Recovery
US9869466B2 (en) * 2012-03-01 2018-01-16 Waste Heat Recovery Ltd. Heat recovery
EP3054251A1 (de) * 2015-02-03 2016-08-10 Johannes Paul Ennemoser Wärmetauscher für abwasser mit pufferspeicherung
WO2018080386A1 (en) * 2016-10-25 2018-05-03 Jlo Development Ab Recovery system and method for recovery of thermal energy from waste water
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CN108168073A (zh) * 2018-01-22 2018-06-15 无锡恒业电热电器有限公司 蓄热式风洞实验电加温器系统
US11493276B2 (en) * 2019-04-29 2022-11-08 Noventa Energy Partners Inc. Feed water supplementary thermal exchange apparatus, system and method
WO2022031154A1 (en) 2020-08-05 2022-02-10 Grīnbergs Kaspars A system for indoor microclimate control and a method for control thereof
LV15618A (lv) * 2020-08-05 2022-02-20 Grīnbergs Kaspars Iekštelpu mikroklimata uzturēšanas sistēma un tās vadības paņēmiens
CN113896266A (zh) * 2021-11-15 2022-01-07 江苏科技大学 一种压缩引射复合式热泵污水处理系统及其运行方法
USD1107199S1 (en) 2023-06-08 2025-12-23 Ipex Technologies Inc. Heat exchange device

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FR2946133B1 (fr) 2011-07-15
SMT201700259T1 (it) 2017-07-18
CA2763827A1 (fr) 2010-12-02
PT2435762T (pt) 2017-03-15
CY1118752T1 (el) 2018-03-07
TN2011000609A1 (fr) 2013-05-24
LT2435762T (lt) 2017-06-12
MX2011012678A (es) 2012-02-28
EP2435762B1 (fr) 2016-12-07
IL216625A0 (en) 2012-02-29
WO2010136681A2 (fr) 2010-12-02
HUE032033T2 (en) 2017-08-28
ES2617661T3 (es) 2017-06-19
DOP2011000368A (es) 2012-05-31
AU2010252881A1 (en) 2012-01-19
SI2435762T1 (sl) 2017-06-30
DK2435762T3 (en) 2017-02-27
HRP20170356T1 (hr) 2017-08-11
JP2012530891A (ja) 2012-12-06
SG176966A1 (en) 2012-02-28
WO2010136681A3 (fr) 2013-07-18
FR2946133A1 (fr) 2010-12-03
EP2435762A2 (fr) 2012-04-04
BRPI1008208A2 (pt) 2016-03-08
CA2763827C (fr) 2017-06-27
CN102893093A (zh) 2013-01-23
RU2011152869A (ru) 2013-07-10
PL2435762T3 (pl) 2017-07-31

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