US20130228309A1 - Process and Apparatus for Recovering Energy from Wastewater - Google Patents

Process and Apparatus for Recovering Energy from Wastewater Download PDF

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Publication number
US20130228309A1
US20130228309A1 US13/884,202 US201113884202A US2013228309A1 US 20130228309 A1 US20130228309 A1 US 20130228309A1 US 201113884202 A US201113884202 A US 201113884202A US 2013228309 A1 US2013228309 A1 US 2013228309A1
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US
United States
Prior art keywords
wastewater
heat
working fluid
interconnection device
heat energy
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
Application number
US13/884,202
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English (en)
Inventor
Thomas Wood
Andrew Hermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEXUS EWATER Pty Ltd
Original Assignee
NEXUS EWATER Pty Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from AU2010904946A external-priority patent/AU2010904946A0/en
Application filed by NEXUS EWATER Pty Ltd filed Critical NEXUS EWATER Pty Ltd
Assigned to NEXUS EWATER PTY LTD reassignment NEXUS EWATER PTY LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HERMANN, ANDREW, WOOD, THOMAS
Publication of US20130228309A1 publication Critical patent/US20130228309A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • 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
    • F25B30/06—Heat pumps characterised by the source of low potential 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
    • F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
    • F24D17/001—Domestic hot-water supply systems using recuperation of waste heat with accumulation of heated 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
    • F24D17/02—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
    • 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
    • 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

Definitions

  • the present invention relates to a process and apparatus for the removal of residual heat from wastewater for reuse.
  • the preferred embodiment described as an example herein is particularly suited to the removal of heat from grey water in domestic residences, for later reuse in supplying energy for water heating in the home.
  • Wastewater discharged from domestic premises is a notable loss of energy from the typical home. Reduced energy consumption through the recovery or elimination of waste heat has seen increasing adoption, through heat recovery ventilation (HRV) systems, low-e glass and improved insulation; yet wastewater heat has received little attention. It is a challenge for two reasons: the contaminant load will quickly block efficient, single pass heat exchangers, and the irregular pattern of waste production limits the amount of heat that can be easily recovered. Incumbent solutions simplify the process by targeting relatively clean shower water (where warm waste and a requirement for delivery of hot water coincide), but this does not tap the full potential for energy savings.
  • HRV heat recovery ventilation
  • Newly developed wastewater treatment processes (such as PCT2010902814) eliminate this temperature dependence, enabling the integrated approach described by this invention.
  • the current invention resides in a process for the removal of heat energy from wastewater that comprises:
  • the preferred method of heat transfer is using a heat pump, where the working fluid is a refrigerant gas.
  • the working fluid is a refrigerant gas.
  • refrigerant gases including R-134a, R-417a, R-744, R-600a, R-410a; with R-417a being the most preferred according to this invention.
  • the process further comprises:
  • the invention resides in an apparatus for the removal of heat energy from wastewater.
  • the apparatus comprises:
  • the apparatus further comprises:
  • interconnection device may further comprise one or more of the following:
  • the process according to this invention is ideally suited to the treatment of domestic grey water.
  • ‘Grey water’ is wastewater produced from fixtures including showers, hand sinks and laundry facilities. These fixtures are not designed for the collection of human excrement or discharges, and faeces or urine does not grossly contaminate the resulting wastewater.
  • Grey water fixtures generally include major sources of hot water consumption, and have warmer resulting waste streams. It is important that these are captured to ensure the invention described herein operates at the highest efficiency.
  • FIG. 1 Describes the process of the invention and how it may be installed to capture heat energy from domestic grey water.
  • FIG. 2 Presents a detailed cross-section of an appropriate interconnection device.
  • the invention resides in a process for the recovery of heat energy from waste water.
  • the invention is suitable to application to many types of wastewater; preferably this water is generated in domestic residences.
  • the invention can also be applied to other waste streams where warm water is generated, and a need to heat incoming water coincide.
  • Water processed according to this invention must be above 0° Celsius, and preferably wastewater should be generated between 15 and 65 degrees.
  • FIG. 1 a preferred embodiment is depicted in which the invention is coupled to the grey water sources ( 100 ) in a domestic residence ( 101 ).
  • Wastewater is directed, via separated plumbing ( 102 ) designed to maintain separation between grey water and more heavily contaminated streams, to an interconnection device ( 103 ).
  • the interconnection device has a number of functions, including acting as a buffer to decouple the generation of wastewater from the treatment, heat capture and reuse processes. Each of these processes operates according to a differing (regular or irregular) schedule, and the decoupling effect allows them to be interconnected.
  • a heat exchange surface ( 104 ) is placed in contact with the collected wastewater.
  • the device additionally comprises connection to the conventional sewer system ( 105 ) or an alternative method of wastewater disposal such as a leach field, septic system, holding pond or aerated wastewater treatment system.
  • a separate connection to a suitable grey water treatment system ( 106 ) is also included. This connection might alternatively be used to supply grey water for applications other than treatment and reuse.
  • the heat exchange surfaces act as a barrier between the grey water, contained in the interconnection device, and a refrigerant working fluid contained by a network of refrigerant plumbing arranged in a closed loop ( 107 ).
  • the plumbing can be made from a great number of materials, with copper being the most preferred.
  • the loop operates in such a way that refrigerant is expanded from a liquid phase, by means of an expansion valve ( 108 ) or a capillary tube.
  • the cold gas is passed through the heat exchange surface where its temperature is raised by energy transfer from the collected wastewater. This warm gas can then be compressed using the compressor ( 108 ), where it is passed to another heat exchange surface ( 109 ).
  • This heat exchange surface is in contact with heat storage media ( 110 ) in a heat storage reservoir ( 111 ).
  • the hot refrigerant is able to transfer energy, via the heat exchange surface, into the media.
  • the remaining plumbing ( 112 ) then returns the refrigerant fluid to the expansion valve and the cycle is repeated.
  • the heat storage reservoir will be insulated and will preferably contain some form of supplementary heat source ( 115 ).
  • This heat source may be of any available type, including: electric element, gas fire, solar, geothermal, wood fire, among others as appropriate.
  • the storage media is water, it is desirable that the temperature be maintained above 65° Celsius in order to prevent the growth of thermophillic bacteria. The water must also be prevented from boiling, by remaining below 100° Celsius, to prevent undue pressure on the structure of the reservoir. A reservoir containing water would require a pressure relief valve.
  • the heat storage reservoir may contain a phase change material, such as paraffin wax, capable of storing larger amounts of heat energy for a given volume.
  • the heat energy storage media ( 110 ) is itself the potable water supply.
  • the heat exchange surface ( 113 ) is replaced by an open pipe allowing direct flow of potable water into, and out of, the reservoir.
  • a tempering valve ( 116 ) is placed between the heat energy reservoir and any residential fixtures. This ensures water supplied to the home is maintained at a temperature suitable for application to human skin.
  • the invention further resides in an apparatus for the recovery of energy from wastewater.
  • the apparatus facilitates the extraction of heat energy from water streams by providing an interconnection between heat transfer equipment and the waste that would be sent directly to sewer in ordinary circumstances.
  • the apparatus also provides a connection between incoming, cold, potable water and heat stored in an energy storage reservoir, along with a mechanism to transport heat energy between the interconnection device and the reservoir.
  • the heat transfer mechanism might comprise a direct heat transfer, dilution of one stream with another, conversion to mechanical or chemical energy, or conversion to electrical energy.
  • energy is transported by means of a refrigeration cycle, or heat pump.
  • the interconnection device comprises a waste inlet ( 200 ), where wastewater, preferably including hot domestic grey water, enters the device.
  • the interconnection device may be made of a wide range of suitable waterproof materials including plastic, metal, composites, or natural substances.
  • the material should be smooth, to reduce the adherence of wastewater contaminants and should have low thermal conductivity, to reduce the loss of heat energy to the surrounding environment.
  • the plumbing connection will be below the surface of the ground, so the design of the device must be such that it can withstand ground pressures. It must also have features that prevent it being lifted from the soil due to uplift pressures, frost, or a water table that rises periodically.
  • the preferred embodiment described here would be constructed from an insulating plastic material ( 201 ) of sufficient thickness to attenuate heat losses to the surrounding soil.
  • Water entering via the inlet is then optionally passed across a filter ( 202 ) where particles larger than a prescribed size are separated from the main flow.
  • the filter may be of many configurations, and may be washable, disposable or self-cleaning.
  • a self cleaning filter incorporating wedge wires designed to separate particles larger than approximately 200 ⁇ m is used. Collected particles ( 203 ) are then directed, using a small amount of incoming wastewater, toward the outlet ( 204 ).
  • Water with larger particles removed, is then directed into a heat extraction chamber ( 205 ), where it is placed in contact with a heat exchange surface ( 206 ).
  • the heat exchange surface is also in contact with a refrigerant working fluid in the preferred embodiment.
  • the working fluid is connected to the rest of the process by means of plumbing with an inlet ( 207 ) and outlet ( 208 ).
  • the inlet is nearer the top of the chamber, and the hottest water, and the outlet nearest the bottom of the chamber.
  • the heat exchange surface could be directly in contact with the potable supply, or could comprise an alternative method of energy transfer, like a Peltier device.
  • the heat transfer chamber is designed such that newly incoming water contacts the heat exchange surface before being directed into the main body of the tank. This ensures that the temperature of water in contact with the heat exchange surface is at the highest possible temperature, which promotes efficient transfer into the working fluid, and thus efficient operation of the apparatus.
  • the heat extraction chamber is sized such that it can contain pulses of wastewater for a sufficient period to extract the maximum amount of heat.
  • the size of the chamber is between 50 and 500 litres, with between 100 and 150 litres being most preferred. Other applications will require the chamber to be sized differently as appropriate.
  • Temperature in the heat extraction chamber is maintained above a critical point through the use of a thermostatic control system ( 209 ) and a temperature-measuring device ( 210 ).
  • the temperature In the case of water, the temperature must be maintained above the freezing point, 0° Celsius, to ensure that ice does not form. Ice reduces the efficiency of heat transfer by insulating the heat exchange surface from any incoming, warmer water. It can also block flows and disrupt the intended operation of the interconnection device.
  • the low temperature threshold for the thermostatic control system is set between 0° and 4° Celsius, with between 2° and °4 degrees being the optimum range according to this invention. At temperatures below this threshold, the heat energy recovery process is stopped until further wastewater is gathered and the temperature returns above the threshold.
  • the thermostatic control system includes a lag, for example: turning off the heat recovery equipment when the temperature falls to 2° Celsius, and activating it again only when the temperature rises to 4° C.
  • Water in the chamber can be directed through the use of baffles ( 211 ) and weirs ( 212 ) to ensure that the hottest water remains in contact with the heat exchange surface for the maximum time possible.
  • it can be directed by mechanical means, such as a recirculation pump or mechanical mixer arranged in such a way as to maintain turbulent flow and circulation within the chamber.
  • This chamber is designed to uncouple the pulsatile output of water generated by the residence, from the processing requirements of a downstream wastewater treatment system. In may cases, these systems operate in a continuous fashion, or have a defined batch size that would be otherwise incompatible with the output from a typical home.
  • the size of the chamber will depend, in particular, on the specific treatment process being used, but will typically be between 50 litres and 2000 litres. Most preferably, the detention chamber will have a capacity between 100 litres and 300 litres.
  • Water can be directed from the detention chamber to a suitable wastewater treatment system by means of a pump ( 214 ), optionally controlled by a level sensor ( 215 ), and interconnecting plumbing ( 216 ).
  • water may not be transferred from the detention chamber at the same rate it is being generated by the residence.
  • the detention chamber may become full and water will exit the chamber via an overflow port ( 217 ), traveling directly to the conventional sewer system, or other conventional method of wastewater disposal, via a plumbing connection ( 218 ).
  • the outgoing wastewater will carry away any remaining particulate matter that has been collected by the filter.
  • the interconnection device is designed to prevent any discharge of malodorous gases to the local environment.
  • a lid ( 219 ) with a tight seal ( 220 ) also prevents the ingress of ground water, or rainwater. Some ventilation is required to ensure the reliable flow of liquid through the device, so a connection to a standard plumbing vent is required.
  • the device may also include a backflow prevention system ( 221 ), designed to prevent waste from the conventional sewer system from entering the system by the reverse path and contaminating the grey water with heavily soiled streams.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
US13/884,202 2010-11-09 2011-11-09 Process and Apparatus for Recovering Energy from Wastewater Abandoned US20130228309A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2010904946 2010-11-09
AU2010904946A AU2010904946A0 (en) 2010-11-09 A Process and Aparatus for Recovering Energy from Wastewater
PCT/AU2011/001452 WO2012061891A1 (fr) 2010-11-09 2011-11-09 Procédé et appareil permettant de récupérer de l'énergie en provenance d'eaux usées

Publications (1)

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US20130228309A1 true US20130228309A1 (en) 2013-09-05

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US13/884,202 Abandoned US20130228309A1 (en) 2010-11-09 2011-11-09 Process and Apparatus for Recovering Energy from Wastewater

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US (1) US20130228309A1 (fr)
AU (1) AU2011326349A1 (fr)
CA (1) CA2816918A1 (fr)
WO (1) WO2012061891A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150101777A1 (en) * 2013-10-11 2015-04-16 Dung-Di Yu Heat recovery storage device
WO2015088350A1 (fr) * 2013-12-13 2015-06-18 Wolters Floris Tampon thermique pour système de stockage de chaleur et de froid
US10203166B2 (en) 2014-09-05 2019-02-12 2078095 Ontario Limited Heat recovery apparatus and method
US10598412B2 (en) 2016-01-29 2020-03-24 Robert W. Jacobi Supplemental heat transfer apparatus for geothermal systems
CN111777256A (zh) * 2020-08-04 2020-10-16 河南顺圆水处理技术有限公司 一种高温高盐废水回用的处理装置和方法
US20220074604A1 (en) * 2020-09-10 2022-03-10 Intellihot, Inc. Heating system
US11306978B2 (en) 2014-09-05 2022-04-19 2078095 Ontario Limited Heat recovery apparatus and method
US11326830B2 (en) 2019-03-22 2022-05-10 Robert W. Jacobi Multiple module modular systems for refrigeration
US11493227B2 (en) 2020-05-12 2022-11-08 Robert W. Jacobi Switching flow water source heater chiller
US11768039B2 (en) * 2016-10-25 2023-09-26 Ecoclime Solutions Ab Recovery system and method for recovery of thermal energy from waste water
US11859832B2 (en) 2021-06-22 2024-01-02 2078095 Ontario Limited Gray water heat recovery apparatus and method

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* Cited by examiner, † Cited by third party
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WO2014029992A1 (fr) * 2012-08-24 2014-02-27 Reaqua Systems Ltd Système de récupération de chaleur dans des eaux grises
WO2014029990A1 (fr) * 2012-08-24 2014-02-27 Reaqua Systems Ltd Système de recyclage d'eaux usées
GB2510375B (en) * 2013-01-31 2017-09-13 Basic Holdings Heating system and thermal energy store
ITFI20130262A1 (it) * 2013-10-31 2015-05-01 Rosario Gigliotti Un dispositivo per il recupero del calore proveniente da acque reflue di scarico.
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
NL2025464B1 (en) * 2020-04-30 2021-11-18 Dewarmte B V A thermal energy recovery system
NL2028220B1 (en) 2021-05-17 2022-12-02 Dewarmte B V A thermal energy recovery system and house or building equipped with such a thermal energy recovering system

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US4210102A (en) * 1978-11-17 1980-07-01 Dosmann Joseph B Space heater heat recovery system
CA1162917A (fr) * 1983-03-03 1984-02-28 Eric V. Pemberton Systeme d'extraction de la chaleur d'un premier liquide pour le rechauffement d'un second
US5106493A (en) * 1991-02-01 1992-04-21 Mcintosh Todd Gray-water reclamation and reuse system
US7965929B2 (en) * 2007-03-27 2011-06-21 Giorgio Eberle Heat recovery device

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Publication number Priority date Publication date Assignee Title
US4210102A (en) * 1978-11-17 1980-07-01 Dosmann Joseph B Space heater heat recovery system
CA1162917A (fr) * 1983-03-03 1984-02-28 Eric V. Pemberton Systeme d'extraction de la chaleur d'un premier liquide pour le rechauffement d'un second
US5106493A (en) * 1991-02-01 1992-04-21 Mcintosh Todd Gray-water reclamation and reuse system
US7965929B2 (en) * 2007-03-27 2011-06-21 Giorgio Eberle Heat recovery device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9372035B2 (en) * 2013-10-11 2016-06-21 Institute Of Nuclear Energy Research Heat recovery storage device
US20150101777A1 (en) * 2013-10-11 2015-04-16 Dung-Di Yu Heat recovery storage device
WO2015088350A1 (fr) * 2013-12-13 2015-06-18 Wolters Floris Tampon thermique pour système de stockage de chaleur et de froid
US10203166B2 (en) 2014-09-05 2019-02-12 2078095 Ontario Limited Heat recovery apparatus and method
US11306978B2 (en) 2014-09-05 2022-04-19 2078095 Ontario Limited Heat recovery apparatus and method
US10598412B2 (en) 2016-01-29 2020-03-24 Robert W. Jacobi Supplemental heat transfer apparatus for geothermal systems
US11768039B2 (en) * 2016-10-25 2023-09-26 Ecoclime Solutions Ab Recovery system and method for recovery of thermal energy from waste water
US11326830B2 (en) 2019-03-22 2022-05-10 Robert W. Jacobi Multiple module modular systems for refrigeration
US11493227B2 (en) 2020-05-12 2022-11-08 Robert W. Jacobi Switching flow water source heater chiller
US11549716B2 (en) 2020-05-12 2023-01-10 Robert W. Jacobi Wastewater conditioning apparatus and method
CN111777256A (zh) * 2020-08-04 2020-10-16 河南顺圆水处理技术有限公司 一种高温高盐废水回用的处理装置和方法
US20220074604A1 (en) * 2020-09-10 2022-03-10 Intellihot, Inc. Heating system
US11859832B2 (en) 2021-06-22 2024-01-02 2078095 Ontario Limited Gray water heat recovery apparatus and method

Also Published As

Publication number Publication date
WO2012061891A1 (fr) 2012-05-18
AU2011326349A1 (en) 2013-07-04
CA2816918A1 (fr) 2012-05-18

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