GB2463512A - Flue gas heat recovery system - Google Patents

Flue gas heat recovery system Download PDF

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Publication number
GB2463512A
GB2463512A GB0821969A GB0821969A GB2463512A GB 2463512 A GB2463512 A GB 2463512A GB 0821969 A GB0821969 A GB 0821969A GB 0821969 A GB0821969 A GB 0821969A GB 2463512 A GB2463512 A GB 2463512A
Authority
GB
United Kingdom
Prior art keywords
heat
heat recovery
recovery liquid
tank
circulation
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.)
Granted
Application number
GB0821969A
Other versions
GB2463512B (en
GB0821969D0 (en
Inventor
Richard Hanson-Graville
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.)
DEDICATED PRESSURE SYSTEMS Ltd
COMPATIBLE ENERGY SYSTEMS Ltd
Original Assignee
DEDICATED PRESSURE SYSTEMS Ltd
COMPATIBLE ENERGY SYSTEMS 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 to GBGB0815197.9A priority Critical patent/GB0815197D0/en
Application filed by DEDICATED PRESSURE SYSTEMS Ltd, COMPATIBLE ENERGY SYSTEMS Ltd filed Critical DEDICATED PRESSURE SYSTEMS Ltd
Publication of GB0821969D0 publication Critical patent/GB0821969D0/en
Publication of GB2463512A publication Critical patent/GB2463512A/en
Application granted granted Critical
Publication of GB2463512B publication Critical patent/GB2463512B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0034Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/06Arrangements of devices for treating smoke or fumes of coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00Central heating systems using heat accumulated in storage masses
    • F24D11/002Central heating systems using heat accumulated in storage masses water heating system
    • F24D11/004Central heating systems using heat accumulated in storage masses water heating system with conventional supplementary heat source
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00Central heating systems using heat accumulated in storage masses
    • F24D11/002Central heating systems using heat accumulated in storage masses water heating system
    • F24D11/005Central heating systems using heat accumulated in storage masses water heating system with recuperation of waste heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D12/00Other central heating systems
    • F24D12/02Other central heating systems having more than one heat source
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00Domestic hot-water supply systems
    • F24D17/0036Domestic hot-water supply systems with combination of different kinds of heating means
    • F24D17/0052Domestic hot-water supply systems with combination of different kinds of heating means recuperated waste heat and conventional heating means
    • F24D17/0057Domestic hot-water supply systems with combination of different kinds of heating means recuperated waste heat and conventional heating means with accumulation of the heated water
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001Recuperative heat exchangers
    • F28D21/0003Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007Water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00Heat sources or energy sources
    • F24D2200/04Gas or oil fired boiler
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00Heat sources or energy sources
    • F24D2200/14Solar energy
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00Heat sources or energy sources
    • F24D2200/16Waste heat
    • F24D2200/18Flue gas recuperation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y02B30/14
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/18Domestic hot-water supply systems using recuperated or waste heat
    • Y02E20/363
    • Y02E60/142
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

A flue gas heat recovery system comprises a first heat exchanger 5 configured to recover heat from flue gases emitted by a boiler 6, a thermal store comprising a tank 2 containing a heat recovery liquid 3, and a first circulation means 4 to circulate the heat recovery liquid through the first heat exchanger. Preferably, the system also comprises a second heat exchanger 8 configured to transfer heat from the heat recovery liquid to water 9 entering the boiler, and a second circulation means 7 to circulate the heat recovery liquid through the second heat exchanger. The heat recovery liquid may comprise water with corrosion inhibitors, water with dissolved solutes, or a non-aqueous liquid such as oil. The thermal store tank may be open vented. A further heat capture system, such as a solar panel (19, fig.3), may be used to augment the heat stored in the thermal store. The first and second circulation means may comprise pumps. Preferably, an additional circulation means (26, fig.4) is used to circulate heat recovery liquid through an underfloor heating system (25, fig.4).

Description

Heat Recovery System

Field of the Invention

The invention relates to methods and apparatus for recovery of heat from flue gases of boilers, particularly domestic hot water and heating systems.

Background

Heat exchangers for recovery of waste heat from flue gases are known. These are used to recover heat from flue gases (e.g. from a boiler fuelled by gas, oil or some other combustible fuel), primarily for use in the production of hot water.

Current forms of such flue gas heat recovery systems and storage for hot water utilise an indirect connection, with the primary water circulating within and through the flue gas heat recoveiy heat exchanger being used to heat a store of water via a second heat exchanger (typically a coil within the store, through which the primary water circulates).

This pre-warmed water is then used as the inlet to a substantially conventional boiler where it is further heated to the desired temperature, to emerge as domestic hot water.

Inventive Concept The present invention concerns the direct connection of a thermal store, in the form of e.g. a cylinder (or tank) of a primary heat recovery liquid such as water, to a boiler flue gas heat recovery system. The liquid comprising the thermal store is, itself, circulated through the flue gas heat recovery heat exchanger, thereby raising the temperature of the thermal store as heat is recovered from the flue gases.

Heated liquid (the primary heat recovery liquid) from the thermal store may then be used to instantaneously pre-heat (e.g. via a heat exchanger, and preferably a plate heat exchanger) incoming domestic cold water feeding a hot water boiler, especially a so-called "combination boiler". Where the boiler is a combination boiler, the domestic cold water feed usually comprises cold water at mains pressure.

The thermal store may also be heated by auxiliary heat sources such as solar panels, wood burning stoves, heat pumps and the like.

Amongst the advantages of such a configuration are that: The use of a primary thermal store allows higher storage temperatures to be safely achieved. Furthermore, the heat store can be open-vented, with the overall installation still providing mains-pressure domestic hot water, thereby avoiding the use of an unvented (and therefore pressunsed) storage system, requiring greater engineering complexity and the need to meet the applicable regulatory requirements. Such an open-vented thermal store may be maintained in a full condition by the provision of a feed and expansion ("F & E") tank. By use of a thermal store in the form of a cylinder, or tank, such direct connection allows the colder water from base of thermal store to circulated to flue heat recovery system, thereby maximising the temperature difference between this primary circuit and the flue gases, thereby ensuring maximum efficiency of recovery system. The liquid in the thermal store can be non-potable comprising e.g. water with corrosion inhibitors, or could be a liquid with a high thermal heat capacity such water with dissolved solutes, oil, or another non-aqueous liquid.

Summary of the Invention

Accordingly, the invention provides a flue gas heat recovery system comprising: a first heat exchanger configured to recover heat from boiler flue gases; a thermal store comprising a tank to hold a primary heat recovery liquid; and a first circulation means to circulate said heat recovery liquid through said first heat exchanger.

In a first subsidiary aspect, the system further comprises: a second heat exchanger configured to transfer heat from said primary heat recovery liquid to water entering a boiler; and a second circulation means to circulate said heat recovery liquid through said second heat exchanger. Preferably, said second circulation means is configured to withdraw primary heat recovery liquid from a top region of said tank.

In a second subsidiary aspect, the system further comprises: a second circulation means configured to circulate said heat recovery liquid through an underfloor heating system.

In any aspect of the invention, it is preferable that said tank is vented.

Also included within the scope of the invention is a flue gas heat recovery system substantially as described herein, with reference to, and as illustrated by any appropriate combination of the accompanying drawings

Brief Description of the Drawings

The invention will be described with reference to the accompanying drawings, in which: Figure 1 is a schematic diagram of a flue gas heat recovery system, pre-heating a water feed to a boiler; Figure 2 is a schematic diagram of a flue gas heat recovery system with a boiler by-pass diverter; Figure 3 is a schematic diagram of a flue gas heat recovery system augmented by solar capture; Figure 4 is a schematic diagram of a flue gas heat recovery system providing heat to an underfioor heating system; and Figure 5 is a schematic diagram of an alternative arrangement of a flue gas heat recovery system augmented by solar capture;

Description of Preferred Embodiments

Figures 1, 2 and 3 illustrate, schematically, embodiments of the invention.

Figure 1 shows a heating system, generally indicated by 1. The system comprises a thermal store in the form of a tank 2 containing a primary heat recovery liquid 3. For domestic installations, the tank 2 would typically hold of the order of 200 litres, although tanks as small as 50 litres would also provide a useful heat store for smaller installations.

For larger installations, and also those using solar collection to heat the primary heat recovery liquid 3 (described below), then tank volumes of up to 500 litres, or even up to 1000 litres are preferred.

A first circulation means 4 in the form of a pump is used to circulate the primary heat recovery liquid 3 through a first heat exchanger 5 configured to transfer heat from flue gases emitted by a boiler 6. Although illustrated with the inlet connection entering at the base of the heat exchanger 5, the connection between the fluid path and the heat exchanger may be made at any location on the unit. The system may he configured to recover heat from the flue gases of boilers such as gas-, oil-or solid fuel-fired central heating or hot water boilers, from wood-burning stoves, and from gas-, oil-, or solid fuel-fired cooking ranges such as those sold in the UK under the registered trademarks AGA and Rayburn. The system is most efficiently arranged such that the circulation means 4 draws water from the base region of the tank 2, which would generally be at a lower temperature than other regions, thereby giving the greatest temperature difference between the heat recovery liquid and the flue gases, leading to the most effective heat transfer. After passing through the heat exchanger 5, the heated heat recovery liquid 3 is then returned to the tank 2. The liquid may be returned to the top of the tank 2 (which would generally be a higher temperature), but it is preferred that it is returned at a middle region of the tank 2, as illustrated. Returning the heated liquid at this point reduces the risk of temperature stratification of the primary heat recovery liquid 3 in the tank 2. In other embodiments of the invention the first circulation means 4 may be provided by arranging the tank 2 and flue gas heat exchanger 5 such that flow occurs by passive circulation.

A second circulation means 7 in the form of a pump is provided to circulate the heated primary heat recovery liquid 3 through a second heat exchanger 8, configured to transfer heat to a cold water feed 9 to be used as input to the boiler 6 for the production of hot water. If required, the cold water feed 9 may be at mains pressure', thereby providing high pressure hot water for use by the consumer. The second heat exchanger is preferably in the form of a plate heat exchanger, having good heat transfer characteristics in a compact volume. Control apparatus is preferably provided to activate the second circulation means 7 only when there is a demand for hot water in the system, thereby reducing energy costs and wear on the pump.

The thermal store tank 2 may he open-vented, thereby allowing a relatively simple construction. A header tank 10 is provided to maintain liquid in the thermal store tank 2 via a top-up pipe 16. A typical arrangement of such a header tank would include a float valve arrangement 11 fed by a water supply. An expansion, or pressure relief, connection 12 may usefully be provided between the thermal store tank 2 and the header tank 10.

Additionally, inlet 13 and outlet 14 ports may he provided in the thermal store tank to allow auxiliary heat sources such as heat pumps and wood burning stoves to be used to augment the heat input into the thermal store. Electric heaters may also be mounted in the tank 2 to provide auxiliary heating of the heat recovery liquid if required. Such heaters might usefully be powered by e.g. domestic wind turbines.

Figure 2 shows the configuration of Figure 1 with the additional of a diverting/mixing valve 15 to allow the water flow to he diverted past the boiler in the event that sufficient heat input is provided to the cold water 9 from the thermal store.

Figure 3 shows an alternative embodiment in which cold water from a storage tank 17 (rather than mains pressure hot water) is pre-heated by the system before entering the boiler. A thermostatic mixing valve 18 is provided to mix cold water with the hot water emerging from the boiler 6 so that the water temperature is not too high, especially when water is first drawn from the system.

Also in this embodiment, a further heat capture system, in the form of a solar panel 19, is used to augment the heat stored in the thermal store. Heat recovery liquid 3 from the thermal store tank 2 is circulated through the solar panel 19 by circulation means such as a pump 20. Heat recovery liquid 3 is drawn from a an outlet port 14 in the base region of the tank 2 and circulated through the solar panel 19 before being returned to an upper region of the tank through an inlet port 13. A non-return valve 21 is provided to prevent back-flow of heated heat recovery liquid into the solar panel 19 when the pump 20 is not operational.

Temperature sensors 22, 23 and 24 may be provided in the thermal store tank 2 and solar panel 19, to enable a control system (not illustrated) to optimise the circulation of heat recovery liquid 3 though the solar panel 19 dependent on the prevailing environmental conditions.

Also illustrated, schematically, in Figure 3 is a central heating system 25, also supplied by the boiler 6.

Figure 4 illustrates, schematically, a heat recovery system, generally indicated by 1, of the same basic configuration as described for Figure 2. In addition, the system is configured such that heat recovery liquid 3 from thermal storage tank 2 may be circulated through an underfioor heating system by means of an additional circulation means such as a pump 26. A mixing valve 27 is provided to allow the temperature of water being fed to the underfioor heating system to be regulated. The heat recovery system is particularly appropriate for this type of application, as underfloor heating systems function well with consistent but relatively low-level heat input that can he provided by such a heat recovery system. Furthermore, the relatively continuous heat dissipation into the underfloor heating system 25 (as opposed to the more sporadic heat dissipation for the generation of domestic hot water) reduces the temperature of the primary heat recovery liquid 3 in the thermal store, thereby increasing the efficiency of heat recovery by the flue gas heat exchanger 5.

Figure 5 illustrates, schematically, a heat recovery system configured as that shown in Figure 3, except using an alternative mode of supplying auxiliary heat to the heat store 2.

in this configuration, heat from an auxiliary source such as a solar panel 19, as illustrated, or from a wood-burning stove, heat pump or the like is transferred to the primary heat recovery liquid 3 by passing a second heat transfer liquid, in thermal contact with the auxiliary heat source, through a coil 28, or other heat exchange unit located in thermal contact (e.g. immersed within) the primary heat recovery liquid 3.

Claims (6)

  1. CLAIMS1. A flue gas heat recovery system comprising: a first heat exchanger configured to recover heat from boiler flue gases; a thermal store comprising a tank to hold a primary heat recovery liquid; and a first circulation means to circulate said heat recovery liquid through said first heat exchanger.
  2. 2. A system according to claim 1, further comprising: a second heat exchanger configured to transfer heat from said primary heat recovery liquid to water entering a boiler; and a second circulation means to circulate said heat recovery liquid through said second heat exchanger.
  3. 3. A system according to claim 2 wherein said second circulation means is configured to withdraw primary heat recovery liquid from a top region of said tank.
  4. 4. A system according to claim 1, further comprising: a second circulation means configured to circulate said heat recovery liquid through an underfloor heating system.
  5. 5. A system according to any preceding claim wherein said tank is vented.
  6. 6. A flue gas heat recovery system substantially as described herein, with reference to, and as illustrated by any appropriate combination of the accompanying drawings.
GB0821969A 2008-08-20 2008-12-02 Heat recovery system Expired - Fee Related GB2463512B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GBGB0815197.9A GB0815197D0 (en) 2008-08-20 2008-08-20 Heat recovery system

Publications (3)

Publication Number Publication Date
GB0821969D0 GB0821969D0 (en) 2009-01-07
GB2463512A true GB2463512A (en) 2010-03-17
GB2463512B GB2463512B (en) 2011-03-02

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GB0821969A Expired - Fee Related GB2463512B (en) 2008-08-20 2008-12-02 Heat recovery system

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2360435A1 (en) * 2010-02-11 2011-08-24 Leidi Consult Ltd. A heating system and method using alternative energy for heating buildings
GB2486491A (en) * 2010-12-17 2012-06-20 Alpha Therm Ltd Water heating system and a method of supplying hot water
NL2008324C2 (en) * 2012-02-21 2013-08-26 Atag Verwarming Nederland B V System for heating two divided liquids.
GB2506582A (en) * 2012-08-23 2014-04-09 Thermal Integration Ltd Apparatus for pre-heating a fluid heater such as a boiler
GB2509327A (en) * 2012-12-28 2014-07-02 Zenex Technologies Ltd System and method for heating fluids such as domestic hot water and an adapter for fitting a replacement boiler
GB2500735B (en) * 2012-03-26 2014-07-30 Basic Holdings Thermal storage device
WO2014125306A1 (en) * 2013-02-18 2014-08-21 Ideal Boilers Limited Water heating apparatus
EP2413043A3 (en) * 2010-07-26 2014-12-17 Vaillant GmbH Heating device
CN105299676A (en) * 2015-09-16 2016-02-03 华北电力大学 Smoke moisture and waste heat recovery device based on hollow micro-nano porous ceramic membranes
GB2533981A (en) * 2015-03-16 2016-07-13 Clk Corp Hybrid heat pump boiler system
CN107401753A (en) * 2017-07-27 2017-11-28 芜湖新农夫机械有限公司 A kind of general hot-blast stove emission-control equipment of multimedium fuel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910483B (en) * 2016-05-09 2017-08-04 四川大学 Natural Circulation boiling heat transfer reclaims the method that pasty material waste heat and heating are utilized

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090474A (en) * 1976-06-04 1978-05-23 Kauffmann Walter E Hot water booster
US4412526A (en) * 1981-01-16 1983-11-01 Degrose Louis Water tempering system
DE3400073A1 (en) * 1984-01-03 1985-07-11 Helmut Zink System for flue gas heat recovery
WO2006051259A1 (en) * 2004-11-12 2006-05-18 Zenex Technologies Limited System for delivering warmed fluids
GB2431228A (en) * 2005-11-19 2007-04-18 Matthew Lee Heating system for hot water and space heating comprising a solar panel and a fuel fired boiler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090474A (en) * 1976-06-04 1978-05-23 Kauffmann Walter E Hot water booster
US4412526A (en) * 1981-01-16 1983-11-01 Degrose Louis Water tempering system
DE3400073A1 (en) * 1984-01-03 1985-07-11 Helmut Zink System for flue gas heat recovery
WO2006051259A1 (en) * 2004-11-12 2006-05-18 Zenex Technologies Limited System for delivering warmed fluids
GB2431228A (en) * 2005-11-19 2007-04-18 Matthew Lee Heating system for hot water and space heating comprising a solar panel and a fuel fired boiler

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2360435A1 (en) * 2010-02-11 2011-08-24 Leidi Consult Ltd. A heating system and method using alternative energy for heating buildings
EP2413043A3 (en) * 2010-07-26 2014-12-17 Vaillant GmbH Heating device
GB2486491A (en) * 2010-12-17 2012-06-20 Alpha Therm Ltd Water heating system and a method of supplying hot water
EP2631547A1 (en) * 2012-02-21 2013-08-28 ATAG Verwarming Nederland B.V. System for heating two mutually separated liquids
NL2008324C2 (en) * 2012-02-21 2013-08-26 Atag Verwarming Nederland B V System for heating two divided liquids.
GB2500735B (en) * 2012-03-26 2014-07-30 Basic Holdings Thermal storage device
GB2506582A (en) * 2012-08-23 2014-04-09 Thermal Integration Ltd Apparatus for pre-heating a fluid heater such as a boiler
GB2509327A (en) * 2012-12-28 2014-07-02 Zenex Technologies Ltd System and method for heating fluids such as domestic hot water and an adapter for fitting a replacement boiler
GB2509327B (en) * 2012-12-28 2016-08-31 Zenex Tech Ltd A system and method for heating fluids, and an adaptor for use with a boiler
WO2014125306A1 (en) * 2013-02-18 2014-08-21 Ideal Boilers Limited Water heating apparatus
GB2533981A (en) * 2015-03-16 2016-07-13 Clk Corp Hybrid heat pump boiler system
GB2533981B (en) * 2015-03-16 2016-11-30 Clk Corp Hybrid heat pump boiler system
CN105299676A (en) * 2015-09-16 2016-02-03 华北电力大学 Smoke moisture and waste heat recovery device based on hollow micro-nano porous ceramic membranes
CN107401753A (en) * 2017-07-27 2017-11-28 芜湖新农夫机械有限公司 A kind of general hot-blast stove emission-control equipment of multimedium fuel

Also Published As

Publication number Publication date
GB2463512B (en) 2011-03-02
GB0821969D0 (en) 2009-01-07
GB0815197D0 (en) 2008-09-24

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