EP1944560A2 - Élément de connexion refroidi pour combinaison de plusieurs générateurs de chaleur - Google Patents

Élément de connexion refroidi pour combinaison de plusieurs générateurs de chaleur Download PDF

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Publication number
EP1944560A2
EP1944560A2 EP07023701A EP07023701A EP1944560A2 EP 1944560 A2 EP1944560 A2 EP 1944560A2 EP 07023701 A EP07023701 A EP 07023701A EP 07023701 A EP07023701 A EP 07023701A EP 1944560 A2 EP1944560 A2 EP 1944560A2
Authority
EP
European Patent Office
Prior art keywords
generator
connecting element
integrated
primary
duct
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Withdrawn
Application number
EP07023701A
Other languages
German (de)
English (en)
Other versions
EP1944560A3 (fr
Inventor
Guido De Sanctis
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.)
Merloni Termosanitari SpA
Original Assignee
Merloni Termosanitari SpA
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
Application filed by Merloni Termosanitari SpA filed Critical Merloni Termosanitari SpA
Publication of EP1944560A2 publication Critical patent/EP1944560A2/fr
Publication of EP1944560A3 publication Critical patent/EP1944560A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • 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
    • F24H1/46—Water heaters having plural combustion chambers
    • 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
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • 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
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F24H9/146—Connecting elements of a heat exchanger
    • 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
    • F24D18/00—Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply
    • 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
    • F24D2101/00—Electric generators of small-scale CHP systems
    • F24D2101/30—Fuel cells
    • 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
    • F24D2101/00—Electric generators of small-scale CHP systems
    • F24D2101/80—Electric generators driven by external combustion engines, e.g. Stirling engines
    • 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
    • F24D2103/00—Thermal aspects of small-scale CHP systems
    • F24D2103/10—Small-scale CHP systems characterised by their heat recovery units
    • F24D2103/13—Small-scale CHP systems characterised by their heat recovery units characterised by their heat exchangers
    • 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
    • F24D2200/04—Gas or oil fired boiler

Definitions

  • the present invention relates to a primary fuel generator such as a boiler for space and/or domestic water heating, hereinafter referred to as a primary generator, to which a secondary generator which is also a fuel generator is connected where this secondary generator may be a thermoelectric cogenerator such as a Stirling motor or a fuel cell. More specifically, the present invention relates to a means of cooling at least the head of the thermoelectric generator.
  • the head of the thermoelectric generator indicates the area of the secondary generator immediately behind the combustion chamber which the combustion products that are generated in it flow through.
  • integrated generator GI integrated generator
  • thermoelectric generator The use of fuel heat generator heat exchangers is useful for the heat absorption of combustion products of a thermoelectric generator.
  • thermoelectric cogenerator Systems in which the combustion products of a thermoelectric cogenerator are cooled in the heat exchangers of a primary generator together with its combustion products are already known.
  • Document WO 01/90656 shows a primary generator comprising a first burner and a heat exchanger to which a secondary generator comprising a second burner is connected.
  • the flue gases generated by this secondary generator are discharged to the area where the first burner is located by way of an exhaust pipe.
  • the heat exchanger is traversed by the combustion products, hereinafter referred to as flue gases, generated by both the first and the second burners which are mixed together from the start of heat exchange in the primary generator combustion chamber.
  • the combustion products of the secondary generator are taken into the heat exchanger of the primary generator by way of an exhaust pipe in one of its intermediate points and orthogonally to the main axis of the primary generator.
  • the high temperatures of the secondary generator flue gases may cause excessive, abnormal overheating of the principal parts of the thermoelectric generator and the duct conveying the flue gases and the areas and elements surrounding it.
  • part of said thermal carrier fluid can then be conveyed to a cooling circuit on the secondary generator.
  • Cooling is restricted to the body of the secondary generator whereas, as is well known, the part of the secondary generator that undergoes the greatest thermal stress is the head, that is, the part immediately behind the combustion chamber and directly traversed by the flue gases generated in it.
  • a first aim of the present invention is to indicate a simplified means for cooling at least the head of the secondary generator with the same thermal carrier fluid of the primary generator.
  • a second aim of the present invention is to develop a means of connection and entry of secondary generator flue gases in the heat exchanger of said primary generator for a primary generator connected to a secondary generator.
  • Another aim of the present invention is that of reducing the heat loss by the combustion products of the secondary generator during transport and flow to the heat exchanger of the primary generator.
  • Figure 1 illustrates a vertical section of the basic parts of a primary generator to which a secondary generator is connected by way of a connecting element in accordance with the invention.
  • Figure 2 shows a section of the connecting element according to the invention along the line A-A.
  • Figure 3 shows a section of the connecting element according to the invention along the line B-B.
  • Figure 4 shows a perspective view of the connecting element according to the invention.
  • Figure 5 shows a perspective view of the basic parts of the primary generator to which a secondary generator is connected by way of a connecting element in accordance with the present invention, with the connecting element open in section to give a detailed view.
  • Figure 1 shows a secondary generator GS with a combustion chamber connected to a primary generator GP at the top of which a connecting element 1 is fixed.
  • first fuel generator GP with a helical heat exchanger 2 that has a finned tube 201 which is spirally wound to form an appropriate number of coils 202.
  • the combustion products of the secondary generator GS hereinafter simply referred to as flue gases, are cooled using the heat exchanger 2 of the primary generator GP through the heat exchange with the thermal carrier fluid circulating inside it.
  • the connecting element 1 has a channel 104 for cooling, using the same thermal carrier fluid of the primary generator GP, the head 3 of the secondary generator GS which is exposed to the high temperatures of the flue gases generated in its combustion chamber CC. According to the embodiment described in detail in figures 1 , 2 , 3 and 5 , said connecting element 1 also has a duct 105 for the flow of said flue gases from the secondary generator GS to the primary generator GP.
  • Said channel 104 and said duct 105 have at least one shared wall 106 made of conductive material to allow heat exchange between said thermal carrier fluid flowing through said channel 104 and said flue gases flowing through said duct 105.
  • Said heat exchange therefore allows the thermal carrier fluid to absorb part of the heat of the secondary generator GS flue gases when they flow through the duct 105 of the connecting element 1.
  • the flue gases enter the heat exchanger 2 of the primary generator GP already partly cooled whereas the thermal carrier fluid exits said channel 104 with a higher temperature than the one when it entered because of the heat absorbed by the same flue gases and head 3 of the secondary generator GS.
  • the heat exchange that takes place in said connecting element 1 leads to a significant increase in the efficiency and performance of the integrated generator GI.
  • said connecting element 1 includes a passage 107 for entry of the secondary generator GS flue gases in the duct 105 and a passage 108 for discharge of the same flue gases from duct 105 to the heat exchanger 2 of the primary generator GP.
  • 109 indicates a passage for the thermal carrier fluid of the primary generator GP connected to the end 203 of tube 201 of the heat exchanger 2 (see Figure 5 ).
  • 110 indicates an exit end for the thermal carrier fluid from said channel 104 towards the heating system users, for example.
  • said channel 104 for the thermal carrier fluid of the primary generator GP comprises a first branch 104.a and a second branch 104.b.
  • Said first branch 104.a starts from said passage 109 and has a first curved section that surrounds part of said passage 108, a second intermediate section which is substantially straight and a third curved section that surrounds part of said passage 107, ensuring adequate cooling of head 3 of the secondary generator GS .
  • said second branch 104.b then conveys the thermal carrier fluid from head 3 of the secondary generator GS to the exit end 110 placed next to said passage 109 and from which it is separated by partition 111.
  • Duct 105 for the passing of flue gases from the secondary generator GS to the primary generator GP is comprised and enclosed between said first and second branch 104.a e 104.b.
  • said channel 104 and duct 105 have a substantially rectangular section.
  • Said connecting element 1 can be fastened with flanges 101 and 102 to the upper ends of the primary generator GP and the secondary generator GS.
  • Said flanges 101 and 102 and said channel 104 and duct 105 form a single block obtained by aluminium die-casting.
  • flanges 101 and 102 also serve as covers 101 and 102 of the heat exchanger 2 of the primary generator GP and the secondary generator GS.
  • connecting element 1 can be devised by those skilled in art without departing from the scope and spirit of the invention and it is also clear that in the practical implementation of the invention, the various components previously described may be replaced by elements that are technically equivalent.
  • the channel 104 for the passing of thermal carrier fluid from the primary generator GP to head 3 of the secondary generator GS is connected downstream of the heat exchanger 2 of said primary generator GP and sends said thermal carrier fluid to the users.
  • said integrated generator GI having a primary generator GP which is not necessarily a fuel generator but one that is capable of heating a thermal carrier fluid.
  • thermoelectric generators for example, as already used in the known state of the art but they may also consist of other heat engines such as absorption or compressor refrigerating systems (such as heat pumps) driven by an internal combustion engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP07023701.1A 2007-01-12 2007-12-07 Élément de connexion refroidi pour combinaison de plusieurs générateurs de chaleur Withdrawn EP1944560A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000002A ITAN20070002A1 (it) 2007-01-12 2007-01-12 Organo di collegamento raffreddato per la combinazione di piu' generatori di calore.

Publications (2)

Publication Number Publication Date
EP1944560A2 true EP1944560A2 (fr) 2008-07-16
EP1944560A3 EP1944560A3 (fr) 2013-06-05

Family

ID=39365906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07023701.1A Withdrawn EP1944560A3 (fr) 2007-01-12 2007-12-07 Élément de connexion refroidi pour combinaison de plusieurs générateurs de chaleur

Country Status (2)

Country Link
EP (1) EP1944560A3 (fr)
IT (1) ITAN20070002A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2467651A2 (fr) * 2009-08-18 2012-06-27 Sridhar Deivasigamani Échangeur de chaleur à tube de serpentin pour un circuit d'eau chaude sans réservoir

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001090656A1 (fr) 2000-05-26 2001-11-29 Enatec Micro-Cogen B.V. Appareil et procede assurant la generation combinee de la chaleur et de l'electricite
GB2375590A (en) 2001-03-16 2002-11-20 Bosch Gmbh Robert Device for heating water and generating electrical energy
WO2004102081A1 (fr) 2003-05-13 2004-11-25 Microgen Energy Limited Dispositif de chauffe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121537A (en) * 1932-12-29 1938-06-21 Alco Products Inc Furnace construction
DE19943613B4 (de) * 1999-09-11 2006-09-07 Robert Bosch Gmbh Heizsystem zur Wärme- und Stromerzeugung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001090656A1 (fr) 2000-05-26 2001-11-29 Enatec Micro-Cogen B.V. Appareil et procede assurant la generation combinee de la chaleur et de l'electricite
GB2375590A (en) 2001-03-16 2002-11-20 Bosch Gmbh Robert Device for heating water and generating electrical energy
WO2004102081A1 (fr) 2003-05-13 2004-11-25 Microgen Energy Limited Dispositif de chauffe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2467651A2 (fr) * 2009-08-18 2012-06-27 Sridhar Deivasigamani Échangeur de chaleur à tube de serpentin pour un circuit d'eau chaude sans réservoir
EP2467651A4 (fr) * 2009-08-18 2014-04-23 Intellihot Inc Échangeur de chaleur à tube de serpentin pour un circuit d'eau chaude sans réservoir

Also Published As

Publication number Publication date
ITAN20070002A1 (it) 2008-07-13
EP1944560A3 (fr) 2013-06-05

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