EP1416242A2 - Echangeur de chaleur pour liquides, en particulier batterie de récupération de chaleur - Google Patents

Echangeur de chaleur pour liquides, en particulier batterie de récupération de chaleur Download PDF

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Publication number
EP1416242A2
EP1416242A2 EP20030020737 EP03020737A EP1416242A2 EP 1416242 A2 EP1416242 A2 EP 1416242A2 EP 20030020737 EP20030020737 EP 20030020737 EP 03020737 A EP03020737 A EP 03020737A EP 1416242 A2 EP1416242 A2 EP 1416242A2
Authority
EP
European Patent Office
Prior art keywords
tubes
circuits
bends
heat exchanger
row
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Withdrawn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
EP20030020737
Other languages
German (de)
English (en)
Other versions
EP1416242A3 (fr
Inventor
Ake Ljung
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.)
COILTECH AB
Original Assignee
Flaekt Woods AB
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 Flaekt Woods AB filed Critical Flaekt Woods AB
Publication of EP1416242A2 publication Critical patent/EP1416242A2/fr
Publication of EP1416242A3 publication Critical patent/EP1416242A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F24D19/00—Details
    • F24D19/08—Arrangements for drainage, venting or aerating
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • 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
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00—Heat exchange conduits
    • F28F2210/10—Particular layout, e.g. for uniform temperature distribution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/06—Safety or protection arrangements; Arrangements for preventing malfunction by using means for draining heat exchange media from heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/18—Safety or protection arrangements; Arrangements for preventing malfunction for removing contaminants, e.g. for degassing

Definitions

  • the present invention relates to a liquid-operated heat exchanger, particularly a heat recovery battery, of the type set forth in detail in the preamble of claim 1.
  • Such heat exchangers typically are used for heating and cooling respectively air in ventilation plants and comprise a large number of ribs, which are fastened to a large number of tubes, through which warm or cold liquid is flowing, usually water with an anti-freezing solution.
  • This type of heat exchanger is also used for heat recovery, i.e. to transfer, via a liquid , heat from one air stream to another.
  • Liquid-operated heat recovery batteries will, in order to attain the highest possible temperature efficiency, be counter flow-connected, i.e. the main direction of the liquid flow will be 180° in relation to the air stream. This is important, since the temperature differences typically are small. At the same time the liquid flow will have the same or a somewhat smaller temperature as and than respectively the average value of the temperature changes of the air flows for an optimal temperature efficiency.
  • the liquid speed in the tubes must be sufficiently high to attain a turbulent flow with the liquids, which contain an anti-freezing solution, e.g. glycol mixtures, which normally are used in this type of heat recovery systems.
  • an anti-freezing solution e.g. glycol mixtures, which normally are used in this type of heat recovery systems.
  • the batteries are to be connected in such a manner, that a large number of tubes will be parts of each circuit between inlet collecting tubes and outlet collecting tubes. If the number of tubes in one circuit is larger than the number of tube rows, often multiples, circuits with high and low points are obtained with simple counter current-connections, which points lead to problems with aeration and discharge of the battery.
  • a discharge must be done after a hydrostatic test in order to avoid rupture freezing and when exchanging heat carrier liquids. It is also important to de-air the systems carefully, i.a.
  • the object of the present invention is to counteract and as far as possible eliminate the above-mentioned drawbacks. Also, the state of the art in this field is to be developed through this invention in various respects.
  • the connected high and low points have the same number of tubes from the inlet collecting tube, they have the same static pressure, which means, that no flow arises in the aeration and the discharge tubes respectively. This results in its turn in, that the aeration and the discharge tubes respectively can have a smaller dimension.
  • the circuits can be designed with an upwardly directed and a downwardly directed flow respectively in two tube rows, with only a marginal reduction of the efficiency.
  • a substantial advantage of such a solution is, that the standard connections, which are used today and cannot be completely discharged, can be retained with a minor modification. Those bends, which are high points and have the same static pressure, are replaced by an aeration tube with semi-bends, and in the same manner those bends, which are low points, are replaced by discharge tubes, with semi-bends.
  • the aeration and the discharge tubes respectively can be placed on the same side as the inlet and outlet collecting tubes, which facilitates the accessibility.
  • heat exchanger 1 particularly a heat recovery battery, comprises a vertical outlet collecting tube 3, provided with a main outlet joint 2, and a vertical inlet collecting tube 5, provided with a main inlet joint 4.
  • the inlet collecting tube may project downwards somewhat below the other parts of the heat exchanger in order to be provided there with a valve 18 for discharge
  • the outlet collecting tube suitably projects upwards somewhat above the other parts of the heat exchanger in order to be provided there with a valve 19 for aeration.
  • a duct 6 extends between the two joints and is provided with a circulation pump 7 and e.g. consumption means 8 for heat and cold respectively.
  • Connecting tubes 9 extend between the inlet collecting tube and circuits 10 in the heat exchanger, i.e. a lowermost to each circuit, whereas at the top a connecting tube 11 extends from each circuit to the outlet collecting tube in the embodiment shown in Fig. 1.
  • the corresponding connecting levels for tubes 9 and 11 are both located in the lower part.
  • Each circuit typically extends along the entire width and depth of the heat exchanger and along a portion of the height.
  • Figs. 1 and 2 as well as 6 and 7 respectively five and four such circuits respectively are shown for instance.
  • the exchanger tubes can be arranged in groups at the same level, but suitably with a vertical displacement between the groups, which follow each other in a vertical direction, oblique bends connecting exchanger tubes, located above each other and only the bends between adjacent vertical groups being horizontal (Fig. 1 and 2), but exchanger tubes, which follow each other in a vertical direction may also be located within vertical planes with oblique bends in a horizontal direction adjacent vertical rows (Figs.
  • Mutually parallel ribs 15 are fastened to the exchanger tubes in a known fashion and are, in the two shown embodiments, vertical and extend downwards along the heat exchanger.
  • circuit bends 14 are to be divided or opened up or completely or partially removed and the opened up circuit bend ends, which then may be semi-bends or the ends of the respective exchanger tubes, e.g. via suitable special bends, are to be connected to at least mainly vertical through connecting tubes 16, the one end of which at least suitably projects a short distance beyond the upper and the lower exchanger tubes respectively, where it will be provided with a valve 17 for aeration and discharge respectively.
  • connecting tubes are provided, which can be used for aeration or discharge depending on the position of the heat exchanger. If the heat exchanger is turned around 180° according to Figs.
  • the function of the connecting tubes will be exchanged, i.e. the tubes, which first were used for aeration, will now be used for discharge and vice versa.
  • the corresponding functional exchange may, but it does not have to, take place also for the collecting tubes and their valves.
  • Figs. 3 and 8 show, that all the collecting tubes, connecting tubes and circuit bends are located on one and the same side of the heat exchanger, which should be an advantage regarding the manufacture and the handling of the heat exchanger. However, these parts may be partially located on the other side of the heat exchanger.

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  • 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)
EP03020737A 2002-10-30 2003-09-12 Echangeur de chaleur pour liquides, en particulier batterie de récupération de chaleur Withdrawn EP1416242A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0203185 2002-10-30
SE0203185A SE520895C2 (sv) 2002-10-30 2002-10-30 Vätskekopplad värmeväxlare med luftnings- respektive avtappningsanordningar

Publications (2)

Publication Number Publication Date
EP1416242A2 true EP1416242A2 (fr) 2004-05-06
EP1416242A3 EP1416242A3 (fr) 2011-12-14

Family

ID=20289396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03020737A Withdrawn EP1416242A3 (fr) 2002-10-30 2003-09-12 Echangeur de chaleur pour liquides, en particulier batterie de récupération de chaleur

Country Status (2)

Country Link
EP (1) EP1416242A3 (fr)
SE (1) SE520895C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008049896A1 (de) * 2008-10-03 2010-04-08 Solarhybrid Ag Luftwärmepumpe und Lamellenluftwärmetauscher sowie Verfahren zu deren Betrieb

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19808753C1 (de) 1998-03-02 1999-09-02 Howatherm Klimatech Gmbh Wärmeübertrager

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2301433A (en) * 1940-06-27 1942-11-10 John J Nesbitt Inc Water type cooling or heating surface
US2954213A (en) * 1958-02-24 1960-09-27 Marlo Coil Company Heat exchangers
DE3938842A1 (de) * 1989-06-06 1991-05-29 Thermal Waerme Kaelte Klima Verfluessiger fuer ein kaeltemittel einer fahrzeugklimaanlage
FI950491A (fi) * 1995-02-03 1996-08-04 Abb Installaatiot Oy Lämmönsiirrin
JP3185687B2 (ja) * 1996-11-13 2001-07-11 ダイキン工業株式会社 熱交換器
JP3423207B2 (ja) * 1998-02-09 2003-07-07 クボタ空調株式会社 熱交換器のコイル構造

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19808753C1 (de) 1998-03-02 1999-09-02 Howatherm Klimatech Gmbh Wärmeübertrager

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008049896A1 (de) * 2008-10-03 2010-04-08 Solarhybrid Ag Luftwärmepumpe und Lamellenluftwärmetauscher sowie Verfahren zu deren Betrieb

Also Published As

Publication number Publication date
SE0203185D0 (sv) 2002-10-30
SE0203185L (sv) 2003-09-09
SE520895C2 (sv) 2003-09-09
EP1416242A3 (fr) 2011-12-14

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