CN105783574A - Streamline longitudinal vortex generator strengthening heat transfer - Google Patents
Streamline longitudinal vortex generator strengthening heat transfer Download PDFInfo
- Publication number
- CN105783574A CN105783574A CN201610273120.8A CN201610273120A CN105783574A CN 105783574 A CN105783574 A CN 105783574A CN 201610273120 A CN201610273120 A CN 201610273120A CN 105783574 A CN105783574 A CN 105783574A
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- CN
- China
- Prior art keywords
- streamline
- eddy generator
- heat
- streamlined
- heat exchanger
- 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.)
- Pending
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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
- 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
-
- 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
- F28D1/053—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 straight
-
- 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
- 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
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)
Abstract
The invention relates to a heat transfer strengthening device, in particular to a streamline longitudinal vortex generator strengthening heat transfer. The surface of the streamline longitudinal vortex generator is smoothened into a streamline, and vortex generators are installed in pairs periodically in an incident flow manner and with an incident angle, a certain vortex generator distance and installing density. The vortex generators are directly welded to the heat transfer face of a heat exchanger or formed on the heat exchange face in a punching manner. According to the shapes of the vortex generators, the vortex generators comprise the streamline vortex generator with flaps, the streamline vortex generator with holes and the streamline vortex generator with holes in the lower portion. The vortex generators are arranged on a finned heat exchanger, the shell side of a double-pipe heat exchanger, a plate heat exchanger, a reaction kettle jacket and a heat dissipation plate or a sheet. The streamline longitudinal vortex generator has the beneficial effects of being simple in structure, convenient to install, good in heat transfer strengthening effect, small in resistance, suitable for various heat exchange media, wide in application range and the like and can be used and popularized on heat exchange equipment in the fields of chemical engineering, refrigerating, aerospace and energy.
Description
Technical field
The present invention relates to a kind of strengthening and heat transferring device, particularly relate to the streamlined long direction eddy generator of a kind of augmentation of heat transfer.
Background technology
Augmentation of heat transfer is as the new technique that the development of engineering gets up, and obtains relatively broad application in departments such as chemical industry, the energy, Aero-Space, vehicles.At present, study the strengthening problem of various diabatic process so that the compact heat exchanger of development and Design novelty, be not only in development of modern industry the problem that must solve, be also the urgent task carrying out energy conservation simultaneously.
In recent years, changing the turbulence structure of nearly wall place fluid by installing long direction eddy generator generation longitudinal Vortex at heat exchanger shell-side, thus improving the heat transfer efficiency of compact heat exchanger, achieving good effect.But owing to the inhibition of the existence convection cell of vortex generator also can not be ignored, if eddy generator shape, number, size, installation site etc. in passage reasonably can not be arranged, the drag effect of its generation is significantly larger than the effect of augmentation of heat transfer, often brings the effect run counter to desire.So in appropriate design passage the structure of vortex generator and mounting means be very necessary.
At present, it is common to think that triangle aerofoil profile eddy generator complex heat transfer effect is better than RECTANGULAR WINGS vortex generator, but the resistance of triangle aerofoil profile eddy generator also has the space reduced further.
Streamlined is aerodynamic noun, is the external shape of object, is usually expressed as the smooth and surface of rule, does not have big fluctuating and sharp-pointed corner angle.Modern wind tunnel experiment it turned out the streamlined advantage with high speed, lower resistance.At present, in the streamlined configuration design being widely used to the vehicles such as aircraft, automobile.With certain rule, the periodically streamlined long direction eddy generator of mounted in pairs on heat-transfer area, it is possible to reduction flow resistance, and the concertedness of circumferential velocity field and temperature field can be improved, such that it is able to improve complex heat transfer strengthening efficiency.
Summary of the invention
It is an object of the invention to provide the streamlined long direction eddy generator of a kind of augmentation of heat transfer, the problem that the flow resistance that causes due to its sharp-pointed corner angle and seamed edge when the present invention solves triangle aerofoil profile and rectangle aerofoil profile eddy generator augmentation of heat transfer is bigger.Provide a kind of novel vortex generator, i.e. streamlined long direction eddy generator.The present invention can reduce fluid and flow through flow resistance produced by eddy generator, can have again good heat-transfer effect.Streamlined vortex generator is with less flow resistance for cost, it is thus achieved that more heat exchange.
It is an object of the invention to be achieved through the following technical solutions:
A kind of streamlined long direction eddy generator of augmentation of heat transfer, described streamlined long direction eddy generator surface smooths as streamlined, in meeting stream mode and inflow angle, its eddy generator spacing, the periodic mounted in pairs of packing density；Eddy generator is directly welded on the heat-transfer area of heat exchanger, or impact style molding on heat-transfer surface；Eddy generator shape, including the streamlined eddy generator of band aileron, streamlined eddy generator with holes, the streamlined eddy generator of lower perforate；Eddy generator is installed in fin-tube type heat exchanger, double pipe heat exchanger shell-side, plate type heat exchanger, reacting kettle jacketing and heat sink or sheet.
Advantages of the present invention and effect be:
The present invention has simple in construction, convenient installs, augmentation of heat transfer is effective, resistance is little, suitable in advantages such as various heat transferring mediums, applied ranges, it is possible to chemical industry, refrigeration, Aero-Space, energy field heat transmission equipment on promote the use of.
Accompanying drawing explanation
The streamlined long direction eddy generator of Fig. 1；
In figure: the common streamlined long direction eddy generator of A, B；The streamlined long direction eddy generator that C is with holes；The streamlined long direction eddy generator of D lower openings；The E streamlined long direction eddy generator with rectangle aileron；The F streamlined long direction eddy generator with streamlined aileron.
Fig. 2 installs the fin-tube type heat exchanger schematic diagram of streamlined long direction eddy generator；
Fig. 3 installs the interior pipe of the double pipe heat exchanger with helical fin of streamlined long direction eddy generator；
Fig. 4 installs the plate type heat exchanger schematic diagram of streamlined long direction eddy generator.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail.
Surface of the present invention is smooth and regular, do not have big fluctuating to be connected with heat-transfer surface by the mode welded with the streamlined long direction eddy generator of sharp corners, or, it is also possible on heat-transfer surface, go out streamlined long direction eddy generator by the mode of mechanical stamping.Streamlined long direction eddy generator meets stream mode and inflow angle, certain eddy generator spacing, the periodic mounted in pairs of certain packing density with certain.
Principles of the invention is as follows
Streamlined long direction eddy generator is arranged on heat-transfer surface, adds heat exchange surface area, and improves local flow field by producing longitudinal Vortex, strengthens Radial Flow ability and the turbulence intensity of fluid, weakens Heat transfer boundary layer.Streamlined long direction eddy generator reduces the reason of flow resistance and is in that: fluid is through the eddy generator of smooth surface, and fluid and object interface can well be fitted, the separation of energy Delay boundary conditions layer, it is thus possible to reduce form drag and pressure drag.Additionally streamlined stream of meeting can also reduce fluid and eddy generator sharp impacts and the energy loss that produces.Therefore the present invention can strengthen heat transfer and can reduce again flow resistance, it is adaptable to all kinds of compact heat exchangers, uses field wide.
Embodiment one
Below in conjunction with accompanying drawing, the invention process example is described.
Referring to Fig. 2, the present invention is a kind of, and to can be used for the streamlined long direction eddy generator of augmentation of heat transfer heat conduction reinforced for fin-tube type heat exchanger.The mode adopting punching press on the fin of fin-tube type heat exchanger goes out streamlined long direction eddy generator, arranges in pairs with certain spacing and inflow angle after heat exchanger tube.
Embodiment two
Referring to Fig. 3, the present invention is a kind of can be used for the streamlined long direction eddy generator of augmentation of heat transfer for the double pipe heat exchanger shell-side with flight or with in the reacting kettle jacketing of deflector.The mode by welding at double pipe heat exchanger outer wall of inner tube or reactor outer wall, with certain spacing and the streamlined long direction eddy generator of inflow angle mounted in pairs.
Embodiment three
Referring to Fig. 4, the present invention is a kind of can be used for the streamlined long direction eddy generator of augmentation of heat transfer for rectangular passage augmentation of heat transfer, and mode by welding on the heat-transfer area of rectangular passage, with certain spacing and the streamlined long direction eddy generator of inflow angle mounted in pairs.
Claims (1)
1. the streamlined long direction eddy generator of an augmentation of heat transfer, it is characterised in that described streamlined long direction eddy generator surface smooths as streamlined, in meeting stream mode and inflow angle, its eddy generator spacing, the periodic mounted in pairs of packing density；Eddy generator is directly welded on the heat-transfer area of heat exchanger, or impact style molding on heat-transfer surface；Eddy generator shape, including the streamlined eddy generator of band aileron, streamlined eddy generator with holes, the streamlined eddy generator of lower perforate；Eddy generator is installed in fin-tube type heat exchanger, double pipe heat exchanger shell-side, plate type heat exchanger, reacting kettle jacketing and heat sink or sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610273120.8A CN105783574A (en) | 2016-04-28 | 2016-04-28 | Streamline longitudinal vortex generator strengthening heat transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610273120.8A CN105783574A (en) | 2016-04-28 | 2016-04-28 | Streamline longitudinal vortex generator strengthening heat transfer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105783574A true CN105783574A (en) | 2016-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610273120.8A Pending CN105783574A (en) | 2016-04-28 | 2016-04-28 | Streamline longitudinal vortex generator strengthening heat transfer |
Country Status (1)
| Country | Link |
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| CN (1) | CN105783574A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643264A (en) * | 2016-12-27 | 2017-05-10 | 南昌工程学院 | Porous cylindrical vortex fin |
| CN107504846A (en) * | 2016-11-28 | 2017-12-22 | 华北理工大学 | Engineering truck aerofoil profile heat-pipe type radiator structure |
| CN108709436A (en) * | 2018-05-08 | 2018-10-26 | 中国科学院近代物理研究所 | A kind of low temperature, negative pressure heat exchanger |
| CN110411071A (en) * | 2019-06-21 | 2019-11-05 | 中科美菱低温科技股份有限公司 | A kind of pipe type evaporator and household electrical appliance |
| CN110450942A (en) * | 2019-06-27 | 2019-11-15 | 南京航空航天大学 | It is a kind of for fuselage drag reduction and delay air-flow separate vortex generator |
| CN113175841A (en) * | 2021-04-28 | 2021-07-27 | 西安联创分布式可再生能源研究院有限公司 | Vortex generation delta wing and vortex generation device |
| CN113639578A (en) * | 2021-03-18 | 2021-11-12 | 武汉科技大学 | To wearing vortex generator and having heat exchange tube to wearing vortex generator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504846A (en) * | 2016-11-28 | 2017-12-22 | 华北理工大学 | Engineering truck aerofoil profile heat-pipe type radiator structure |
| CN106643264A (en) * | 2016-12-27 | 2017-05-10 | 南昌工程学院 | Porous cylindrical vortex fin |
| CN108709436A (en) * | 2018-05-08 | 2018-10-26 | 中国科学院近代物理研究所 | A kind of low temperature, negative pressure heat exchanger |
| CN110411071A (en) * | 2019-06-21 | 2019-11-05 | 中科美菱低温科技股份有限公司 | A kind of pipe type evaporator and household electrical appliance |
| CN110450942A (en) * | 2019-06-27 | 2019-11-15 | 南京航空航天大学 | It is a kind of for fuselage drag reduction and delay air-flow separate vortex generator |
| CN113639578A (en) * | 2021-03-18 | 2021-11-12 | 武汉科技大学 | To wearing vortex generator and having heat exchange tube to wearing vortex generator |
| CN113175841A (en) * | 2021-04-28 | 2021-07-27 | 西安联创分布式可再生能源研究院有限公司 | Vortex generation delta wing and vortex generation device |
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Application publication date: 20160720 |