EP0257220A1 - Turbulateur pour tubes d'échange de chaleur - Google Patents

Turbulateur pour tubes d'échange de chaleur Download PDF

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Publication number
EP0257220A1
EP0257220A1 EP87108716A EP87108716A EP0257220A1 EP 0257220 A1 EP0257220 A1 EP 0257220A1 EP 87108716 A EP87108716 A EP 87108716A EP 87108716 A EP87108716 A EP 87108716A EP 0257220 A1 EP0257220 A1 EP 0257220A1
Authority
EP
European Patent Office
Prior art keywords
tube
fluid
heat exchanger
turbulence
helices
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Withdrawn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
EP87108716A
Other languages
German (de)
English (en)
Inventor
Antonio Reig
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.)
Perfils Tecnics Sa "pertecsa"
Original Assignee
Perfils Tecnics Sa "pertecsa"
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 Perfils Tecnics Sa "pertecsa" filed Critical Perfils Tecnics Sa "pertecsa"
Publication of EP0257220A1 publication Critical patent/EP0257220A1/fr
Withdrawn legal-status Critical Current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
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • 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

Definitions

  • This patent refers to an improved turbulence device of the type associated with the tubing utiliz­ed in heat exchangers for the purpose of improving their operational characteristics and the thermal effic­iency of the fluid circulation along the said tubing.
  • the thermal efficiency of some types of heat exchanger is greatly influenced by the time period during which the fluid remains in contact with the walls of the containing vessel and in such cases it is the practice to insert within the tube a helicoidal member which is formed by twisting a rect­angular strip of a material which has physical propert­ies that will not be affected by the presence of the circulating fluid.
  • This helicoidal member causes a turbulence in the circulating fluid which causes an increase in the time during which the fluid remains within the tube and introduces a tendency for the fluid layers to be proj­ected against the tube walls thus lengthening the traj­ectory of the flow and consequently the residual time period of the fluid in the tube once again, this result­ing in an improvement in the heat transfer efficiency of the system.
  • the improvement in the transfer efficiency in heat exchanger tubes has been achieved in the current state of the art by fitting an element of helicoidal configuration having two wings or vanes into the inter­ior of the tube.
  • the improved device described here­in consists equally of an element having the same pitch as that of the currently known two wing helicoidal components but having at least three wings or vanes each forming a helix thus increasing the turbulence and the number of turns in contact with the internal walls of the tube and providing an increase in the annular sections impeding the direct flow of the fluid along the tube. The effect of this being to improve the thermal and hydraulic efficiency of the assembly.
  • the improved turbulence device as described here­in can be made from a synthetic material such as a plas­tic, using mass production automatic machinery and the resulting product can be automatically inserted into the heat exchanger tube with a consequent reduction in cost and an improvement in quality and handling facility.
  • the thermal efficiency of a heat exchanger is a function, among other parameters, of the contact made by the circulating fluid with the tube wall and hence of the residual time of the fluid within the interior of the tube and thus the transfer of part of the fluid's heat to the walls of the said containing tube.
  • the efficiency is increased by inserting in the tube which is of circular section and contains the fluid a component as described above. If the passage of the fluid through the tube is linear in the absence of any turbulence producing element the time during which the fluid occupies the tube is minimal, the fluid moving unimpeded along the tube path.
  • the present invention provides for the fitting of a turbulence device having three or more wings determining three or more helices which, at the same pitch provide a greater number of impeding sections to direct flow and a division of the flow which then circulates in a number of flow passages equivalent to the number of wings of the device.
  • the tube -1- shown in Figure 1 is carrying a fluid vertically upwards an to increase the effic­iency it is fitted with the turbulence component -2-, comprising two undefined helices at a pitch suitably selected to suit the characteristics of the fluid process in question.
  • Figure 2 shows five possible sections of the component from figure 1, as currently known each being of the configuration arising from the shape of the helix wing resulting from the individual method of manufacture.
  • Figures 3 and 4 also illustrate a helicoidal component with three wings defining a Y or lambda shaped cross-section, consisting in effect of three simple juxtaposed helices -5-, -6-, and -7- of which the pitch -P- is the same as that of the known device illustrated in figures 1 and 2.
  • the wavelength, so to speak, or the distance between the node points coincident with the cylinder walls is taken as between the points on each of the salient parts of the particular section.
  • Figure 5 shows the turbulence component in accordance with this invention fitted within a tube -8- and making contact with the internal walls at the extreme edges of the helix wings as shown in Figure 6.
  • the three helices making up this novel turbul­ence device are indicated in the above drawings by means of three different styles of arrow.
  • the device may be fitted within the tube by automatic means, the tube lengths being selected to suit the specific applic­ation for which they are destined.

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)
EP87108716A 1986-07-31 1987-06-16 Turbulateur pour tubes d'échange de chaleur Withdrawn EP0257220A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES8600168U ES1000291Y (es) 1986-07-31 1986-07-31 Dispositivo turbulador para intercambiadores de calor, perfeccionado
ES8600168U 1986-07-31

Publications (1)

Publication Number Publication Date
EP0257220A1 true EP0257220A1 (fr) 1988-03-02

Family

ID=8246818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87108716A Withdrawn EP0257220A1 (fr) 1986-07-31 1987-06-16 Turbulateur pour tubes d'échange de chaleur

Country Status (3)

Country Link
EP (1) EP0257220A1 (fr)
BR (1) BR8703749A (fr)
ES (1) ES1000291Y (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6530422B2 (en) * 1998-09-16 2003-03-11 China Petro-Chemical Corporation Heat exchanger tube, a method for making the same, and a cracking furnace or other tubular heat furnaces using the heat exchanger tube
EP1861668A2 (fr) 2005-03-09 2007-12-05 Kelix Heat Transfer Systems, Llc Structures de transfert de chaleur a flux coaxial a utiliser dans diverses applications
AT504249A3 (de) * 2006-09-27 2012-10-15 Techeffekt Anstalt Helix-kanal für eine erzwungene strömung
US20130153183A1 (en) * 2011-12-19 2013-06-20 David Velan Heat Exchanger
US20140287374A1 (en) * 2011-11-18 2014-09-25 Korea Institute Of Machinery & Materials Cartridge-type inline heater and system for controlling working fluid temperature using same
US10845126B2 (en) * 2014-04-16 2020-11-24 Enterex America LLC Counterflow helical heat exchanger
US11009296B2 (en) 2016-04-12 2021-05-18 6353908 Canada Inc. Heat exchange conduit and heat exchanger
EP3608954B1 (fr) * 2018-08-09 2023-06-21 The Boeing Company Dispositifs de transfert de chaleur et procédés pour faciliter le transfert de chaleur par convection avec une source de chaleur ou une source de froid

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072996A1 (fr) * 1981-08-19 1983-03-02 Mihama Manufacturing Co., Ltd. Turbulateur en matière thermoplastique
EP0077130A1 (fr) * 1981-10-13 1983-04-20 Mihama Manufacturing Co., Ltd. Dispositifs introduisant une turbulence

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072996A1 (fr) * 1981-08-19 1983-03-02 Mihama Manufacturing Co., Ltd. Turbulateur en matière thermoplastique
EP0077130A1 (fr) * 1981-10-13 1983-04-20 Mihama Manufacturing Co., Ltd. Dispositifs introduisant une turbulence

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6530422B2 (en) * 1998-09-16 2003-03-11 China Petro-Chemical Corporation Heat exchanger tube, a method for making the same, and a cracking furnace or other tubular heat furnaces using the heat exchanger tube
EP1861668A2 (fr) 2005-03-09 2007-12-05 Kelix Heat Transfer Systems, Llc Structures de transfert de chaleur a flux coaxial a utiliser dans diverses applications
AT504249A3 (de) * 2006-09-27 2012-10-15 Techeffekt Anstalt Helix-kanal für eine erzwungene strömung
AT504249B1 (de) * 2006-09-27 2013-01-15 Techeffekt Anstalt Helix-kanal für eine erzwungene strömung
US20140287374A1 (en) * 2011-11-18 2014-09-25 Korea Institute Of Machinery & Materials Cartridge-type inline heater and system for controlling working fluid temperature using same
US9784471B2 (en) * 2011-11-18 2017-10-10 Korea Institute Of Machinery & Materials Cartridge-type inline heater and system for controlling working fluid temperature using the same
US20130153183A1 (en) * 2011-12-19 2013-06-20 David Velan Heat Exchanger
US9243853B2 (en) * 2011-12-19 2016-01-26 Ecodrain Inc. Heat exchanger
US10845126B2 (en) * 2014-04-16 2020-11-24 Enterex America LLC Counterflow helical heat exchanger
US11009296B2 (en) 2016-04-12 2021-05-18 6353908 Canada Inc. Heat exchange conduit and heat exchanger
EP3608954B1 (fr) * 2018-08-09 2023-06-21 The Boeing Company Dispositifs de transfert de chaleur et procédés pour faciliter le transfert de chaleur par convection avec une source de chaleur ou une source de froid

Also Published As

Publication number Publication date
BR8703749A (pt) 1988-03-29
ES1000291Y (es) 1991-01-01
ES1000291U (es) 1988-03-01

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Inventor name: REIG, ANTONIO