DE3303019A1 - Method for producing fluidised beds in the vicinity of the wall of the cooling tubes of surface heat exchangers - Google Patents

Method for producing fluidised beds in the vicinity of the wall of the cooling tubes of surface heat exchangers

Info

Publication number
DE3303019A1
DE3303019A1 DE19833303019 DE3303019A DE3303019A1 DE 3303019 A1 DE3303019 A1 DE 3303019A1 DE 19833303019 DE19833303019 DE 19833303019 DE 3303019 A DE3303019 A DE 3303019A DE 3303019 A1 DE3303019 A1 DE 3303019A1
Authority
DE
Germany
Prior art keywords
heat
wall
cooling tubes
heat exchangers
vicinity
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.)
Ceased
Application number
DE19833303019
Other languages
German (de)
Inventor
Paul 6643 Perl Czichon
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19833303019 priority Critical patent/DE3303019A1/en
Publication of DE3303019A1 publication Critical patent/DE3303019A1/en
Ceased legal-status Critical Current

Links

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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The heat exchange in a surface heat exchanger is complicated in the interior of the cooling tube by two processes: particle movement which is too small in the vicinity of the wall of the cooling tubes, and thus worsening of the heat transfer, disturbance of the heat conduction due to deposition of dirt on the cooling tube surface. It is the object of the method to intensify the movement of particles, in order in this way to improve the heat transfer and at the same time to prevent the deposition of dirt. For this purpose, a worm which is set rotating by the flow is rotatably anchored in the cooling tube. This rotation of the worm intensifies the movement of the particles and thereby improves the heat transfer. At the same time, the rotation of the worm causes wall friction which prevents the deposition of dirt. The method is suitable for all heat exchange processes in surface heat exchangers standing vertically or lying horizontally.

Description

"Verfanren zur Erzeugung von Wirbelschichten in Wandnähe der Kühlrohre von"Means to generate fluidized beds near the wall of the cooling tubes from

Oberflächenwärmeaustauschern" Zum Zwecke des Wärmeaustauschers werden in der Verfahrens- und Kraftwerkstechnik bevorzugt Oberflächenwärmeaustauscher verwendet. Das sind Apparate, in ienen die Wärme eines Stoffstromes auf einen zweiten übertragen wird. Dabei sind die beiden Stoffströme durch Rohre einer Kühlfläche voneinander getrennt. Surface heat exchangers "For the purpose of heat exchangers are Surface heat exchangers are preferably used in process and power plant technology. These are devices in which the heat from one flow of material is transferred to another will. The two material flows are separated from each other by tubes of a cooling surface separated.

Ein Stoffstrom Va strömt im Wärmeaustauscher um die Kühlrohre, und der zweite V strömt durch sie hindurch.A material flow Va flows in the heat exchanger around the cooling tubes, and the second V flows through it.

Für den Wärmeaustausch in diesen Apparten ist die Wärmedurchgangszahl k in kj/(m²hk) die kennzeichnende Größe. Es gilt die Gleichtung: In dieser Gleichung steht der Ausdruck s/A für die Wärmeleitung und die GröX den αa und αi für den Wärmeübergang in kj/(m²hk). Werte können durch Wirbelbildung der am Wärmeaustausch beteiligten Stoffe verbessert und gleich= zeitig Iie Verschmutzung der Rohrwand durch Ablagerung verhindert werden.Hierdurch ist es möglich, die Wärmeaustauschleistung eines Wärmeaustauschers zu steigern.The heat transfer coefficient k in kj / (m²hk) is the characteristic value for the heat exchange in these apartments. The equation applies: In this equation the expression s / A stands for the heat conduction and the GröX the αa and αi for the heat transfer in kj / (m²hk). Values can be improved by the formation of eddies of the substances involved in the heat exchange and at the same time the contamination of the pipe wall by deposits can be prevented. This makes it possible to increase the heat exchange performance of a heat exchanger.

Ziel der Erfindung ist es, den Wert αi zu verbessern und die Verschmutzung der Rohrinnenfläche durch Ablagerungen zu verhindern.Hierzu wird erfindungsgemäß vorgeschlagen, in die Kühlrohre spiralförmig gebogene Schwimmkörper e@zuführen, die ständig im Rohr bleiben und durch ein Haltesieb am Austreten gehindert werd In der beigefügten Skizze ist das Prinzip zur Durchführung des erfindungsgemäßen Verfahrens dargestellt. In den Kühlrohren befinden sich die spiralförmig ge= bogenen und schwimmfähigen Wirbeleinalgen 1, die durch das Haltesieb 2 im Rohr gehalten werden.The aim of the invention is to improve the value αi and the To prevent contamination of the inner surface of the pipe by deposits. To this end, according to the invention proposed to feed spirally curved floating bodies e @ into the cooling pipes, which stay in the pipe all the time and are prevented from escaping by a retaining screen In the attached sketch is the principle for carrying out the invention Procedure shown. The spirally curved ones are located in the cooling tubes and buoyant vertebrate algae 1, which are held in the tube by the retaining screen 2 will.

Claims (1)

Patentansprüche 7erfahren zur Erzeugung von Wirbelschichten an der Innenwand von Kühlrohren in Oberflächenwärmeaustauschern dadurch gekennzeichnet, daß in die Kühlrohre, über die gesamte Länge, spiralförmig gedrehte Schwimakörper. eingelegt werden, die ein Haltesieb im Rohr.festhält.Patent claims 7erfahren for the generation of fluidized beds on the Inner wall of cooling tubes in surface heat exchangers characterized by that in the cooling tubes, over the entire length, spirally twisted swimming bodies. are inserted, which holds a retaining screen in the pipe.
DE19833303019 1983-01-29 1983-01-29 Method for producing fluidised beds in the vicinity of the wall of the cooling tubes of surface heat exchangers Ceased DE3303019A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833303019 DE3303019A1 (en) 1983-01-29 1983-01-29 Method for producing fluidised beds in the vicinity of the wall of the cooling tubes of surface heat exchangers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833303019 DE3303019A1 (en) 1983-01-29 1983-01-29 Method for producing fluidised beds in the vicinity of the wall of the cooling tubes of surface heat exchangers

Publications (1)

Publication Number Publication Date
DE3303019A1 true DE3303019A1 (en) 1984-08-02

Family

ID=6189557

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833303019 Ceased DE3303019A1 (en) 1983-01-29 1983-01-29 Method for producing fluidised beds in the vicinity of the wall of the cooling tubes of surface heat exchangers

Country Status (1)

Country Link
DE (1) DE3303019A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0174254A1 (en) * 1984-08-31 1986-03-12 Compagnie De Raffinage Et De Distribution Total France Mechanical device to improve the transfer of heat and to prevent clogging of heat exchangers
EP0586747A1 (en) * 1992-09-10 1994-03-16 The Procter & Gamble Company Heat exchanger system with turbulator for particle-in-liquid dispersion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0174254A1 (en) * 1984-08-31 1986-03-12 Compagnie De Raffinage Et De Distribution Total France Mechanical device to improve the transfer of heat and to prevent clogging of heat exchangers
EP0586747A1 (en) * 1992-09-10 1994-03-16 The Procter & Gamble Company Heat exchanger system with turbulator for particle-in-liquid dispersion

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Legal Events

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8131 Rejection