EP0027478A1 - Wärmetauscher zur Wärmerückgewinnung aus Abgasen - Google Patents

Wärmetauscher zur Wärmerückgewinnung aus Abgasen Download PDF

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Publication number
EP0027478A1
EP0027478A1 EP79200604A EP79200604A EP0027478A1 EP 0027478 A1 EP0027478 A1 EP 0027478A1 EP 79200604 A EP79200604 A EP 79200604A EP 79200604 A EP79200604 A EP 79200604A EP 0027478 A1 EP0027478 A1 EP 0027478A1
Authority
EP
European Patent Office
Prior art keywords
tubes
flue gases
heat
impeller
heat extractor
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Withdrawn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
EP79200604A
Other languages
English (en)
French (fr)
Inventor
Sietze Van Der Iest
Johannes Vorenholt
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.)
Iest Sietze V D
Original Assignee
Iest Sietze V D
VORENHOLT JOHANNES
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 Iest Sietze V D, VORENHOLT JOHANNES filed Critical Iest Sietze V D
Priority to EP79200604A priority Critical patent/EP0027478A1/de
Publication of EP0027478A1 publication Critical patent/EP0027478A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0008—Air heaters
    • 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
    • F28F2250/08—Fluid driving means, e.g. pumps, fans

Definitions

  • the invention relates to a heat extractor for the recovery of heat from flue gases, such as the products of combustion from a central heating furnace, which heat extractor comprises a first impeller or blower and a plurality of parallel tubes, around which a stream for example fresh air generated by the first impeller flows in a direction transversely to the longitudinal axes thereof.
  • the heat liberated by burning oil or gases, is used. Because hot flue gases can not directly be used for heating purposes, they first are guided along the outside of tubes, through which streams a liquid, in general water, or a gas. The heat from the flue gases is partly taken over by the liquid or gas and next used for the heating of houses, buildings etc..
  • flue gases still have a relatively high temperature (300 to 600°C); generally flue gases, although they have a relatively high temperature and thus still contain useful energy, are blown off into the open air. A lot of energy is wasted.
  • this aim is reached with a heat extractor by, that the tubes in cross-section are about rectangular and that they are mounted such that the direction of the stream of fresh air is along the long legs of the rectangular, i.c. perpendicular to the narrow side of the tubes.
  • the cooling surface of the hot flue gases becomes maximal and the tubes will cause a minimum of resistance in the stream of fresh air.
  • the heat extractor comprises a second impeller or blower, which suck the flue gases through through the parallel tubes.
  • the draught is kept up by the high temperature of the flue gases, which causes the exhaust of the gases into the open air.
  • the draught is kept up artificially, consequently the flue gases can be cooled down near room temperature.
  • the first impellor blows fresh air, that after being warmed up by the flue gases can be used for heating purposes. Consequently the efficiency of a central heating system provided with a heat extractor according to the invention, will increase, as all the heat from the flue gases is used, because the flue gases can be cooled down to room temperature.
  • Figure 1 shows a sectional view and figure 2 a top view of a heat extractor for the recovery of heat from flue gases according to the invention.
  • a plurality of tubes 1 are mounted parallel to each other.
  • a first impeller 2 fresh air is sucked from the outside and than blown along the outside of the parallel tubes 1 transversely to the longitudinal axes 3 thereof.
  • a second impeller 4 the hot flue gases are sucked through an inlet 5, an expansion room 6 and the tubes 1 into a header 7 and than blown into the open air by a chimney 8.
  • the fresh air, generated by the first impeller 2, is sucked from the outside and than blown along the outside of the tubes 1 transversely to the longitudinal axes 3 thereof.
  • the fresh air is guided through an inlet conduit 9, a casing 10, in which the tubes 1 are mounted by means of ties 11, and through an outlet conduit 12 and directly employed for heating purposes.
  • undulated sheets 13 are connected, for example welded. This sheets 13, do accelerate the heat transmission from the tubes to the fresh air; a second feature of this sheets is that the fresh air current is better guided along the outside of the tubes.
  • the bottom side 14 of the tubes 1 are in a plane which makes a angle with the horizontal plane. Consequently the condensation of the flue gases can easily flow out the tubes 1.
  • the water is collected into the header 7 and drained by means of a draine 15 into a collector 16.
  • Figure 3 shows a sectional view of a tube 1 of a rectangular cross-section.
  • the direction of the stream of fresh air 17 is perpendicular to the narrow side 18 of the tube 1, i .c. parallel to the long legs 19 of the rectangular.
  • a great advantage of using a first and a second impeller is that if there would arise a leakage and flue gases could escape from the tubes into the fresh air current, because the first impeller is placed before the tubes, it will create a over pressure, and because the second impeller is placed after the tubes it will create a depressure in it, there will be no risk flue gases do escape into the fresh air current.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP79200604A 1979-10-19 1979-10-19 Wärmetauscher zur Wärmerückgewinnung aus Abgasen Withdrawn EP0027478A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP79200604A EP0027478A1 (de) 1979-10-19 1979-10-19 Wärmetauscher zur Wärmerückgewinnung aus Abgasen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP79200604A EP0027478A1 (de) 1979-10-19 1979-10-19 Wärmetauscher zur Wärmerückgewinnung aus Abgasen

Publications (1)

Publication Number Publication Date
EP0027478A1 true EP0027478A1 (de) 1981-04-29

Family

ID=8186306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200604A Withdrawn EP0027478A1 (de) 1979-10-19 1979-10-19 Wärmetauscher zur Wärmerückgewinnung aus Abgasen

Country Status (1)

Country Link
EP (1) EP0027478A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512942A1 (fr) * 1981-09-16 1983-03-18 Foresto Samuel Dispositifs et procedes pour utiliser les gaz brules et chauds et pour utiliser la chaleur ainsi produite
FR2570806A1 (fr) * 1984-09-26 1986-03-28 Vaillant Sarl Echangeur de chaleur pour une source calorifique chauffee par un combustible
EP0488096A1 (de) * 1990-11-29 1992-06-03 Richard Vetter Röhrenwärmeaustauscher
CN102735067A (zh) * 2012-02-16 2012-10-17 焦作市迈科冶金机械有限公司 矿料预热器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1795055A (en) * 1928-04-25 1931-03-03 Charles Hartmann Company Hot-air heater
US2579821A (en) * 1947-01-17 1951-12-25 Deward B Hohnstein Combustion type air heater for house trailers
GB1432779A (en) * 1972-08-25 1976-04-22 Applegate G Space heating systems incorporating thermal regenerators
DE2700182A1 (de) * 1976-01-12 1977-07-21 Chausson Usines Sa Waermeaustauscher mit dicken rohrplatten
DE2731391A1 (de) * 1977-07-12 1979-03-22 Haugg Gmbh Polar Luft Vorrichtung zur nutzbarmachung der restwaerme eines abgases

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1795055A (en) * 1928-04-25 1931-03-03 Charles Hartmann Company Hot-air heater
US2579821A (en) * 1947-01-17 1951-12-25 Deward B Hohnstein Combustion type air heater for house trailers
GB1432779A (en) * 1972-08-25 1976-04-22 Applegate G Space heating systems incorporating thermal regenerators
DE2700182A1 (de) * 1976-01-12 1977-07-21 Chausson Usines Sa Waermeaustauscher mit dicken rohrplatten
DE2731391A1 (de) * 1977-07-12 1979-03-22 Haugg Gmbh Polar Luft Vorrichtung zur nutzbarmachung der restwaerme eines abgases

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512942A1 (fr) * 1981-09-16 1983-03-18 Foresto Samuel Dispositifs et procedes pour utiliser les gaz brules et chauds et pour utiliser la chaleur ainsi produite
FR2570806A1 (fr) * 1984-09-26 1986-03-28 Vaillant Sarl Echangeur de chaleur pour une source calorifique chauffee par un combustible
EP0488096A1 (de) * 1990-11-29 1992-06-03 Richard Vetter Röhrenwärmeaustauscher
CN102735067A (zh) * 2012-02-16 2012-10-17 焦作市迈科冶金机械有限公司 矿料预热器
CN102735067B (zh) * 2012-02-16 2014-07-23 焦作市迈科冶金机械有限公司 矿料预热器

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB NL SE

17P Request for examination filed

Effective date: 19810909

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19830713