EP2504632A2 - Echangeur condenseur à double tubage pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire - Google Patents

Echangeur condenseur à double tubage pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire

Info

Publication number
EP2504632A2
EP2504632A2 EP10790690A EP10790690A EP2504632A2 EP 2504632 A2 EP2504632 A2 EP 2504632A2 EP 10790690 A EP10790690 A EP 10790690A EP 10790690 A EP10790690 A EP 10790690A EP 2504632 A2 EP2504632 A2 EP 2504632A2
Authority
EP
European Patent Office
Prior art keywords
coil
exchanger
plain
fumes
tubing
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
EP10790690A
Other languages
German (de)
English (en)
Other versions
EP2504632B1 (fr
Inventor
Marco De Nardis
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.)
Fontecal SpA
Original Assignee
Fontecal 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 Fontecal SpA filed Critical Fontecal SpA
Priority to PL10790690T priority Critical patent/PL2504632T3/pl
Publication of EP2504632A2 publication Critical patent/EP2504632A2/fr
Application granted granted Critical
Publication of EP2504632B1 publication Critical patent/EP2504632B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F24H1/523—Heat exchangers for sanitary water directly heated by the burner
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction

Definitions

  • Double tubing condensation exchanger for heating water and/or for producing sanitary hot water
  • the present invention relates to a double tubing condensation exchanger for heating water and/or for producing sanitary hot water.
  • the invention relates to a fumes-liquid heat exchanger, permitting obtaining very high energetic efficiency with low specific load loss both on the fumes side and on the liquid side.
  • the Applicant has realised a condensation heat exchanger that can solve all the above problems.
  • a condensation heat exchanger providing two separate coil tubings, respectively a plain tubing and a corrugated tubing. Coupling of these two different coils permits obtaining an optimum heat exchange, differentiating the kind of exchange surface as a function of fluid temperature with which it gets in contact.
  • an exchanger comprised of a coil with plain surface, while in zones with a lower fumes temperature, where condensation phenomenon of gaseous compounds occurs, it is provided a second coil with a corrugated surface, in order to maximise heat exchange and promote proper outflow of condensate.
  • Two coils are provided in series with respect to flow of gaseous products and in parallel with respect to thermal carrier fluid.
  • a double tubing condensation exchanger for heating water and/or for producing sanitary hot water, characterized in that it provides a first coil with a plain surface and a second coil with a corrugated surface, provided in parallel each other, said first and second coils being spiral wound, a thermal carrier fluid circulating, independently, inside said first and second coil, said first coil exchanging heat with combustion fumes mainly by irradiation and convection, and said second coil exchanging heat with combustion fumes mainly by condensation.
  • said first and second coils are spiral wound with the plain coil inside with respect to the outer coil.
  • said first coil has a section shake so as to conform to the profile of said second coil, particularly a pseudo-pentagonal section, or a rectangular section, or an ovoidal section, and like.
  • said exchanger is a vertical fume flow exchanger or a horizontal fume flow exchanger.
  • said first and second coils aree sized so a to make the relevant thermal carrier fluid reaching substantially the same temperature at the outlet from the exchanger.
  • figure 1 schematically shows a first embodiment of the heat exchanger according to the invention
  • figure 2 shows a particular of the heat exchanger of figure 1 ;
  • figure 3 schematically shows a second embodiment of the heat exchanger according to the invention;
  • figure 4 shows a first executive modification of a first particular of heat exchanger of figure 3;
  • figure 5 shows a second executive modification of a first particular of heat exchanger of figure 3.
  • figure 6 shows a third executive modification of a first particular of heat exchanger of figure 3.
  • first figures 1 and 2 it is shown a first embodiment of the heat exchanger according to the invention, generically indicated by reference number 1 , according to an arrangement with a mainly vertical flow of products from combustion within the same exchanger 1.
  • Exchanger 1 provides two coiled tubings, respectively a plain tubing 2 and a corrugated tubing 3, concentrically provided each other.
  • heat exchanger 1 provides that cold thermal carrier fluid, to be heated, enters within heat exchanger from below, running hydraulically parallel with respect to the two coiled tubings 2, 3 upward.
  • Two tubings 2, 3 have different profiles, and particularly, the inner one 2 being comprised of a plain tubing, with profile shown in figure 4 (or one of the different arrangements shown in figures 5 and 6) suitable to be coupled with corrugated tubing 3, so as to realise an optimum thermal exchange, while the outer one 3 is comprised of a flexible corrugated tubing wound as a coil.
  • Two tubings 2, 3 are adjacent each other, and their profiles couple so as to realise an optimum exchange surface to transfer heat from combustion products to thermal carrier fluid.
  • combustion fumes arriving from burner 4 go upward (arrows F), up to lick upper bottom of heat exchanger 1.
  • Fumes once reached upper bottom 5, are forced to invert their direction, again going down toward lower bottom (not shown) through passages realised between corrugated tubing 3 and plain tubing 2.
  • a direct passage does not exist in this first embodiment between interstices of plain coiled tubing 2 (horizontal passages between spire of plain coil), but all fumes are forced upward and to pass within paths indicated in figure 2.
  • heat exchanger 1 in a second embodiment providing a horizontal fumes flow.
  • cold thermal carrier fluid to be heated enters within heat exchanger from below (WATER INLET) following a hydraulically parallel path of the two coiled tubings 2, 3 upward.
  • Two coiled tubings 2 have different profiles, and particularly the inner one 2 is comprised of a plain tubing, with profile shown specifically in figure 4, suitable to be coupled with corrugated tubing so as to realise an optimum heat exchange, while the outer one 3 is comprised of a coiled flexible corrugated tubing.
  • Said coiled tubings 2, 3 are adjacent each other, and are realised with profiles coupled so as to realise an optimum exchange surface for transferring heat from combustion product to thermal carrier fluid.
  • Both coiled tubings 2, 3 are continuous and have no branches all along heat exchanger length 1 , being connected at the bottom with return manifold and above to the inlet manifold (not shown).
  • Thermal exchange mode between gas burner 4, at the top of the combustion chamber, and the two tubings 2, 3, containing thermal carrier fluid, can be so summarised:
  • Plain coiled tubing 2 shown in figures 3 and 4 has a "pseudo- pentagonal" profile, but, as shown in figures 5 and 6, it can be realised with different profiles (pseudo-rectangular profile, pseudo- ovoidal profile, ecc).
  • Main function of plain tubing is that of lowering temperature of fumes arriving from combustion process (variable as a function of the kind of comburent employed and of air excess employed) up to a value of about 300°C-400°C, heating thermal carrier fluid circulating within "plain" hydraulic circuit.
  • Specific "pseudo-pentagonal" shape of plain tubing 2 of figure 4 permits an optimum coupling with corrugated tubing 3, obliging warm fumes to lick exchange surfaces of both tubings, so as to obtain maximum fumes/water heat transfer.
  • tubing 2 plain tube
  • tubing 3 high specific surface of tubing 3, where fumes exchange heat at low temperature and mainly where it occurs condensation of fumes with contemporaneous presence of gaseous and liquid phase.
  • corrugated tubing 3 during this phase permits an optimum outflow of condense.
  • Combination of plain and corrugated tubings permits obtaining a higher efficiency.
  • System based on new coaxial combination of two coils with a different geometry, respectively comprised of a coil winding of a corrugated tubing 3, and the other one comprised of a coil winding of a plain tubing 2 (with an pseudo-pentagonal, - rectangular or - ovoidal shape, and like) permits an optimum exploitation of heat generated by hydrocarbon combustion.
  • particular fumes path permits an optimum fumes/water exchange, with useful efficiencies higher than those obtained with known solutions.

Landscapes

  • 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)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

La présente invention concerne un échangeur condenseur (1) à double tubage, conçu pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire. Ledit échangeur est caractérisé en ce qu'il comprend un premier serpentin (2) présentant une surface unie, et un second serpentin (3) présentant une surface ondulée, disposés parallèlement l'un à l'autre. Lesdits premier (2) et second (3) serpentins sont enroulés en spirale et un fluide caloporteur circule, indépendamment, à l'intérieur dudit premier et dudit second serpentin. Ledit premier serpentin (2) échange de la chaleur avec des fumées de combustion principalement par rayonnement et par convexion, et ledit second serpentin (3) échange de la chaleur avec des fumées de combustion principalement par condensation.
EP10790690.1A 2009-11-24 2010-11-17 Echangeur condenseur à double tubage pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire Active EP2504632B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10790690T PL2504632T3 (pl) 2009-11-24 2010-11-17 Wymiennik kondensacyjny z podwójną wężownicą do ogrzewania wody i/lub wytwarzania ciepłej wody sanitarnej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM2009A000614A IT1396729B1 (it) 2009-11-24 2009-11-24 Scambiatore a condensazione a doppia tubazione per riscaldamento di acqua e/o produzione di acqua calda sanitaria .
PCT/IT2010/000459 WO2011064804A2 (fr) 2009-11-24 2010-11-17 Echangeur condenseur à double tubage pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire

Publications (2)

Publication Number Publication Date
EP2504632A2 true EP2504632A2 (fr) 2012-10-03
EP2504632B1 EP2504632B1 (fr) 2015-03-04

Family

ID=42315635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10790690.1A Active EP2504632B1 (fr) 2009-11-24 2010-11-17 Echangeur condenseur à double tubage pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire

Country Status (6)

Country Link
EP (1) EP2504632B1 (fr)
CN (1) CN102713453B (fr)
ES (1) ES2538392T3 (fr)
IT (2) IT1396729B1 (fr)
PL (1) PL2504632T3 (fr)
WO (1) WO2011064804A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016084109A1 (fr) * 2014-11-26 2016-06-02 Fontecal S.P.A. Échangeur de chaleur à condensation à double bobine pour chauffage et et/ou eau chaude domestique

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940087B (zh) * 2014-04-09 2017-04-05 西安交通大学 一种窄间隙扁圆形双盘管整体冷凝锅炉
EP3314174B1 (fr) 2015-06-24 2023-08-02 Riello S.p.A. Chaudière à condensation comportant un échangeur de chaleur enroulé avec une tuyauterie disposée en spirale
IT201700081975A1 (it) * 2017-07-19 2019-01-19 Calini Donatella Un sistema di produzione di energia per turbine a combustione esterna
IT202100025346A1 (it) * 2021-10-04 2023-04-04 Condevo S P A Avvolgimento tubiero per una cella di scambio di calore a gas per una caldaia
IT202200013435A1 (it) * 2022-06-27 2023-12-27 Riello Spa Scambiatore termico per caldaia, in particolare per caldaia a condensazione, e caldaia comprendente detto scambiatore

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494829A3 (fr) * 1980-11-21 1982-05-28 Ciat Sa Perfectionnements aux echangeurs de temperature du type coaxial
WO2005108875A1 (fr) * 2004-05-11 2005-11-17 Noritz Corporation Échangeur de chaleur et dispositif chauffe-eau

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011064804A2 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016084109A1 (fr) * 2014-11-26 2016-06-02 Fontecal S.P.A. Échangeur de chaleur à condensation à double bobine pour chauffage et et/ou eau chaude domestique
US10024603B2 (en) 2014-11-26 2018-07-17 Riello S.P.A. Double tubing condensation exchanger for heating water and/or for producing sanitary hot water
RU2689890C2 (ru) * 2014-11-26 2019-05-29 Риелло С.П.А. Конденсационный теплообменник с двумя змеевиками для нагревания воды и/или получения горячей воды для бытовых нужд

Also Published As

Publication number Publication date
IT1396729B1 (it) 2012-12-14
IT1403750B1 (it) 2013-10-31
ITRM20100599A1 (it) 2011-05-25
ITRM20090614A1 (it) 2011-05-25
WO2011064804A3 (fr) 2012-05-10
CN102713453B (zh) 2015-05-27
CN102713453A (zh) 2012-10-03
WO2011064804A2 (fr) 2011-06-03
EP2504632B1 (fr) 2015-03-04
PL2504632T3 (pl) 2015-10-30
HK1176394A1 (en) 2013-07-26
ES2538392T3 (es) 2015-06-19

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