CN105698583A - Novel heat exchange tube - Google Patents
Novel heat exchange tube Download PDFInfo
- Publication number
- CN105698583A CN105698583A CN201610166846.1A CN201610166846A CN105698583A CN 105698583 A CN105698583 A CN 105698583A CN 201610166846 A CN201610166846 A CN 201610166846A CN 105698583 A CN105698583 A CN 105698583A
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- heat exchanger
- pipeline
- tube
- heat
- 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
- 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
- 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
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
Abstract
A novel heat exchange tube comprises a flow channel (1), a tube wall (2), a tube wall (3) and a tube wall (4), wherein the cross section of the novel heat exchange tube is formed in such a way that three equal circles with the radius of 25 mm are externally tangent to one another; and such novel heat exchange tubes are arranged in two different modes, namely regular-triangle arrangement and regular-hexagon arrangement. Owing to the unique shape of the novel heat exchange tube, the turbulence intensity can be increased, the heat exchange effect can be enhanced, and the heat exchange performance can be improved; compared with a common round tube, the coefficient of heat exchange of the novel heat exchange tube is approximately increased by 50%. Meanwhile, the novel heat exchange tube is relatively simple in structure, does not scale easily and is convenient to clean after scaling.
Description
Technical field
The invention belongs to refrigeration/energy technology field, relate to a kind of Novel heat exchange pipe, particularly relate to a kind of strengthening fluid disturbance, improve the special-shaped heat exchange pipeline of heat exchanger heat transfer area density。
Background technology
Special-shaped heat exchange pipeline is as a kind of equipment improving heat exchanger efficiency, it is widely used at the energy/refrigeration/chemical field in recent years, but in manufacturing and designing, also lack theoretical direction, enough data are also lacked in practical application, various manufacturers produce different types of special-shaped heat exchange pipeline, but operational effect how, there is presently no the related data that can carry out reliability inquiry, and its test data needs to be investigated。Jin Zunlong (Jin Zunlong, the Three-dimensional simulation of augmentation of heat transfer in spiral grooved tube, Zhengzhou University's journal (engineering version), 2011,6th phase: 5-8) by spiral grooved tube has been carried out Three-dimensional simulation, result shows: along with groove depth increases, while spiral grooved tube heat exchange property strengthens, resistance coefficient also increases along with pitch increases accordingly, its heat exchange property weakens, and resistance coefficient is obviously reduced。Meanwhile, most special-shaped heat exchange tubes adopt welding fin to improve the mode enhanced heat exchange effect of heat exchanger heat transfer area density。In the market most special-shaped heat exchanger tube in running owing to there is the defects such as internal or external flow-disturbing projection makes the easy fouling of pipe ubiquity, pressure drop is big, processing technique is complicated。Therefore, in the running in later stage, heat transfer property will be greatly lowered。The mode improving heat exchanger heat transfer area density is a kind of means that enhanced heat exchange is conventional, but the structure of complexity causes that linear loss increases, and then causes that system energy consumption increases。
Summary of the invention
The present invention is directed to shortcomings and deficiencies of the prior art, it is proposed to a kind of Novel heat exchange pipe。
Technical scheme includes strengthening heat exchanger compactedness, weakens the fouling effect of heat exchange pipeline and strengthen the measures such as disturbance。Concrete technical scheme is in that:
(1) a kind of Novel heat exchange pipe, heat exchange pipeline includes: runner and tube wall；Pipeline section shape be by three radiuses be 25mm wait that circle is circumscribed between two to be formed；Heat exchanger tube adopts arrangement mode composition heat exchanger 2 kinds different；Arrangement mode one: equilateral triangle arrangement, between tube wall, position relationship is: with any one pipeline geometric center for center of rotation, and all the other 3 adjacent pipelines are with the anglec of rotation for 120 ° in a rotationally symmetrical arrangement, and two adjacent channel distances of shaft centers are 30-40mm；First flow region is a kind of working medium, and the second flow region is another working medium, and two kinds of working medium carry out heat exchange by tube wall；Arrangement mode two: regular hexagon arranges, with any one pipeline geometric center for center of rotation, all the other 6 adjacent pipelines with the anglec of rotation for 120 ° in a rotationally symmetrical arrangement, and two adjacent channel distance of shaft centers be 37-45mm, 3rd flow region is a kind of working medium, 4th flow region is another working medium, and two kinds of working medium carry out heat exchange by tube wall；Duct length requires to determine according to design of heat exchanger, and pipeline material adopts rustless steel。
(2) heat exchanger tube length requires to determine according to design of heat exchanger, and when heat exchanger tube length is less than 2m, pipe thickness takes 2mm;When heat exchanger tube length is more than 2m, pipe thickness takes 3mm。
(3) designing requirement that heat exchange pipeline is installed according to heat exchanger assembles, and adopts circumscribed circle diameter 30mm, and equilateral triangle arrangement, distance of shaft centers d takes 30-40mm, and heat transfer area density B scope is 550-1994m2/m3。
(4) designing requirement that heat exchange pipeline is installed according to heat exchanger assembles, and adopts circumscribed circle diameter 30mm, and regular hexagon arranges, and distance of shaft centers d takes 37-45mm, and heat transfer area density B scope is 500-636m2/m3。
(5) heat exchange pipeline quantity is determined according to the design of heat exchange load。
(6) being formed shell-and-tube heat exchanger by heat exchange pipeline, when heat exchanger shell fluid inlet diameter a and heat exchanger tube length b ratio are less than 0.2, heat exchanging pipe wall angle adopts just to the arrangement carrying out flow path direction, to improve the fluid turbulent effect outside pipe。
(7) in heat exchanger arranges, adopt the arrangement mode of equilateral triangle arrangement and regular hexagon arrangement, increase heat exchange surface area, improve heat exchanger compactedness；Fluid, from cross-flow tube bank outside heat exchange pipeline, increases turbulence level, augmentation of heat transfer。
(8) adopt the heat exchanger tube of the present invention not only to make pipeline less scaling, but also improve heat exchanger heat transfer area density 2-3 times；The pipeline wall of arc-shaped makes fluid turbulence degree strengthen, and reaches the purpose of efficient heat transfer；Smooth pipeline wall is adopted to reduce the friction loss of fluid flow through conduit, and easy to clean, reduce the output of pump, reach to save the purpose of the energy。
(9) heat exchanger tube adopts equilateral triangle arrangement, and heat-transfer area density can reach 1994m2/m3, compactedness is greatly improved, and plays the effect of augmentation of heat transfer。
(10) heat exchanger tube adopts regular hexagon arrangement, and between heat exchanger tube, dislocation is arranged, strengthens turbulence level, augmentation of heat transfer。
Summary feature, a kind of Novel heat exchange pipe of the present invention；Realizing heat exchanger with changing under heat condition, volume miniaturization；Unique heat exchange pipeline shape can increase turbulence intensity, enhanced heat exchange effect, improves heat exchange property, and relatively conventional pipe, the coefficient of heat transfer improves nearly 50%。Structure is relatively easy simultaneously, it is not easy to fouling, and more convenient cleaning after fouling。The efficient heat transfer that the present invention is research heat exchanger tube provides a kind of new thinking, has certain guidance meaning。
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Novel heat exchange pipe of the present invention；
Fig. 2 is heat exchanger tube equilateral triangle arrangement schematic diagram；
Fig. 3 is heat exchanger tube regular hexagon arrangement schematic diagram；
In Fig. 1,1, runner；2, tube wall；3, tube wall；4, tube wall;
In Fig. 2, equilateral triangle arrangement: 5, the first flow region, the 6, second flow region；
In Fig. 3, regular hexagon arranges: 7, the 3rd flow region, the 8, the 4th flow region。
Detailed description of the invention
For making the operating process that the present invention realizes be easy to understand with creation characteristic, below in conjunction with detailed description of the invention, the present invention is expanded on further。
Specific embodiment 1
Pipeline section shape be by three radiuses be 25mm wait that circle is circumscribed between two to be formed；If designing requirement B scope 550-1994m2/m3Adopt arrangement mode one: equilateral triangle arrangement, between tube wall, position relationship is: with any one pipeline geometric center for center of rotation, all the other 3 adjacent pipelines with the anglec of rotation for 120 ° in a rotationally symmetrical arrangement, and two adjacent channel distance of shaft centers d be 30-40mm, heat exchanger tube length requires to determine according to design of heat exchanger, and when heat exchanger tube length is less than 2m, pipe thickness takes 2mm；When heat exchanger tube length is more than 2m, pipe thickness takes 3mm；When heat exchanger shell fluid inlet diameter a and heat exchanger tube length b ratio are less than 0.2, heat exchanging pipe wall angle adopts just to the arrangement carrying out flow path direction；Pipeline material adopts rustless steel。
When carrying out equilateral triangle layout, shell fluid is horizontal plunders tube wall, owing to tube wall adopts concave inward structure, between adjacent two pipe wall of heat exchange pipe, cross section of fluid channel is long-pending changes, causing that pressure distribution is uneven makes fluid produce turbulence, boundary region, pipeline wall place is thinning, and fluid heat transferring thermal resistance reduces, and produces enhanced heat exchange effect。Adopt smooth pipeline wall to reduce the friction loss of fluid flow through conduit, reduce the output of pump, reach to save the purpose of the energy；And the present invention has considered the deficiency of existing pipe design, adopt smooth heat exchange surface not only to make pipeline less scaling, but also heat exchanger heat transfer area density is improve 2-3 times。The pipeline wall of arc-shaped makes flow field confusion degree strengthen, and reaches the purpose of efficient heat transfer。
Therefore in conjunction with above-mentioned, this kind of special-shaped heat exchange pipeline can realize heat exchanger with changing under heat condition, volume miniaturization, enhanced heat exchange effect is obvious, relatively conventional pipe, the coefficient of heat transfer improves nearly 50%, and simple in construction, easily processing, the efficient heat transfer for studying special-shaped heat exchanger tube provides a kind of new thinking。
Specific embodiment 2
Pipeline section shape be by three radiuses be 25mm wait that circle is circumscribed between two to be formed；If designing requirement B scope is 500-636m2/m3Adopt arrangement mode two: regular hexagon arranges, with any one pipeline geometric center for center of rotation, all the other 6 adjacent pipelines with the anglec of rotation for 120 ° in a rotationally symmetrical arrangement, and two adjacent channel distance of shaft centers d be 37-45mm, heat exchanger tube length requires to determine according to design of heat exchanger, and when heat exchanger tube length is less than 2m, pipe thickness takes 2mm;When heat exchanger tube length is more than 2m, pipe thickness takes 3mm；When heat exchanger shell fluid inlet diameter a and heat exchanger tube length b ratio are less than 0.2, heat exchanging pipe wall angle adopts just to the arrangement carrying out flow path direction；Pipeline material adopts rustless steel。
When carrying out regular hexagon layout, shell fluid is horizontal plunders tube wall, owing to tube wall adopts concave inward structure, and two arrange in dislocation between adjacent channel, when extratubal fluid is horizontal plunder tube wall time, fluid rapidly flows through crossover location, extratubal fluid flow area is undergone mutation, causing that fluid produces whirlpool, Hydrodynamic turbulence effect is strengthened, and produces enhanced heat exchange effect。Adopt smooth pipeline wall to reduce the friction loss of fluid flow through conduit, reduce the output of pump, reach to save the effect of the energy；And the present invention has considered the deficiency of existing pipe design, adopt smooth heat exchange surface not only to make pipeline less scaling, but also heat exchanger heat transfer area density is improve 2-3 times。The pipeline wall of arc-shaped makes flow field confusion degree strengthen, and reaches the purpose of efficient heat transfer。
Therefore in conjunction with above-mentioned, this kind of special-shaped heat exchange pipeline can realize heat exchanger with changing under heat condition, volume miniaturization, enhanced heat exchange effect is obvious, relatively conventional pipe, the coefficient of heat transfer improves nearly 50%, and simple in construction, easily processing, the efficient heat transfer for studying special-shaped heat exchanger tube provides a kind of new thinking。
Claims (6)
1. a Novel heat exchange pipe, it is characterised in that: heat exchange pipeline includes: runner (1), tube wall (2), tube wall (3), tube wall (4)；Pipeline section shape be by three radiuses be 25mm wait that circle is circumscribed between two to be formed；Heat exchanger tube adopts arrangement mode composition heat exchanger 2 kinds different；Arrangement mode one: equilateral triangle arrangement, between tube wall, position relationship is: with any one pipeline geometric center for center of rotation, and all the other 3 adjacent pipelines are with the anglec of rotation for 120 ° in a rotationally symmetrical arrangement, and two adjacent channel distances of shaft centers are 30-40mm；Being a kind of working medium in first flow region (5), be another working medium in the second flow region (6), two kinds of working medium carry out heat exchange by tube wall；Arrangement mode two: regular hexagon arranges, with any one pipeline geometric center for center of rotation, all the other 6 adjacent pipelines with the anglec of rotation for 120 ° in a rotationally symmetrical arrangement, and two adjacent channel distance of shaft centers d be 37-45mm, 3rd flow region (7) is a kind of working medium, being another working medium in 4th flow region (8), two kinds of working medium carry out heat exchange by tube wall；Duct length requires to determine according to design of heat exchanger, and pipeline material adopts rustless steel。
2. a kind of Novel heat exchange pipe as claimed in claim 1, it is characterised in that: heat exchanger tube length requires to determine according to design of heat exchanger, and when heat exchanger tube length is less than 2m, pipe thickness takes 2mm；When heat exchanger tube length is more than 2m, pipe thickness takes 3mm。
3. a kind of Novel heat exchange pipe as claimed in claim 1, it is characterized in that: the designing requirement that heat exchange pipeline is installed according to heat exchanger assembles, adopt circumscribed circle diameter 15mm, equilateral triangle arrangement, distance of shaft centers d takes 30-40mm, and heat transfer area density B scope is 550-1994m2/m3。
4. a kind of Novel heat exchange pipe as claimed in claim 1, it is characterized in that: the designing requirement that heat exchange pipeline is installed according to heat exchanger assembles, adopting circumscribed circle diameter 15mm, regular hexagon arranges, distance of shaft centers d takes 37-45mm, and heat transfer area density B scope is 500-636m2/m3。
5. a kind of Novel heat exchange pipe as claimed in claim 1, it is characterised in that: heat exchange pipeline quantity is determined according to the design of heat exchange load。
6. a kind of Novel heat exchange pipe as claimed in claim 1, it is characterized in that: formed shell-and-tube heat exchanger by heat exchange pipeline, when heat exchanger shell fluid inlet diameter a and heat exchanger tube length b ratio are less than 0.2, heat exchanging pipe wall angle adopts just to the arrangement carrying out flow path direction。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610166846.1A CN105698583A (en) | 2016-03-23 | 2016-03-23 | Novel heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610166846.1A CN105698583A (en) | 2016-03-23 | 2016-03-23 | Novel heat exchange tube |
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| Publication Number | Publication Date |
|---|---|
| CN105698583A true CN105698583A (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610166846.1A Pending CN105698583A (en) | 2016-03-23 | 2016-03-23 | Novel heat exchange tube |
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| CN (1) | CN105698583A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120988A (en) * | 2017-05-26 | 2017-09-01 | 成都东浩散热器有限公司 | A kind of heat abstractor of automobile engine |
| CN112964087A (en) * | 2021-03-18 | 2021-06-15 | 中国船舶工业集团公司第七0八研究所 | Mobius type heat exchanger |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1088827A (en) * | 1964-09-18 | 1967-10-25 | Babcock & Wilcox Ltd | Improvements in finned tubes especially for heat exchanger tube walls |
| US4538676A (en) * | 1982-02-24 | 1985-09-03 | L & C. Steinmuller Gmbh | Gas liquid parallel flow direct current heat exchanger |
| SU1273721A1 (en) * | 1985-07-11 | 1986-11-30 | Белорусский институт механизации сельского хозяйства | Double-pipe heat-exchanging member |
| DE29707180U1 (en) * | 1996-10-23 | 1997-07-31 | Babcock Bsh Gmbh | Shaft cooler |
| CN1378064A (en) * | 2001-03-30 | 2002-11-06 | 刘润海 | Heat exchange technology by means of circular honeycomb tube passage |
| US20040112572A1 (en) * | 2002-12-17 | 2004-06-17 | Moon Seok Hwan | Micro heat pipe with poligonal cross-section manufactured via extrusion or drawing |
| CN102083296A (en) * | 2009-11-27 | 2011-06-01 | 鸿富锦精密工业（深圳）有限公司 | Heat radiating device |
| CN102230754A (en) * | 2010-11-30 | 2011-11-02 | 上海科米钢管有限公司 | Heat exchange pipe and on-line pipe-making processing technique thereof |
| CN104713405A (en) * | 2015-03-04 | 2015-06-17 | 东南大学 | Regular-triangular-arrayed vortex array heat-transfer device |
| CN205940254U (en) * | 2016-03-23 | 2017-02-08 | 上海海洋大学 | Efficient abnormal shape heat exchange tube |
-
2016
- 2016-03-23 CN CN201610166846.1A patent/CN105698583A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1088827A (en) * | 1964-09-18 | 1967-10-25 | Babcock & Wilcox Ltd | Improvements in finned tubes especially for heat exchanger tube walls |
| US4538676A (en) * | 1982-02-24 | 1985-09-03 | L & C. Steinmuller Gmbh | Gas liquid parallel flow direct current heat exchanger |
| SU1273721A1 (en) * | 1985-07-11 | 1986-11-30 | Белорусский институт механизации сельского хозяйства | Double-pipe heat-exchanging member |
| DE29707180U1 (en) * | 1996-10-23 | 1997-07-31 | Babcock Bsh Gmbh | Shaft cooler |
| CN1378064A (en) * | 2001-03-30 | 2002-11-06 | 刘润海 | Heat exchange technology by means of circular honeycomb tube passage |
| US20040112572A1 (en) * | 2002-12-17 | 2004-06-17 | Moon Seok Hwan | Micro heat pipe with poligonal cross-section manufactured via extrusion or drawing |
| CN102083296A (en) * | 2009-11-27 | 2011-06-01 | 鸿富锦精密工业（深圳）有限公司 | Heat radiating device |
| CN102230754A (en) * | 2010-11-30 | 2011-11-02 | 上海科米钢管有限公司 | Heat exchange pipe and on-line pipe-making processing technique thereof |
| CN104713405A (en) * | 2015-03-04 | 2015-06-17 | 东南大学 | Regular-triangular-arrayed vortex array heat-transfer device |
| CN205940254U (en) * | 2016-03-23 | 2017-02-08 | 上海海洋大学 | Efficient abnormal shape heat exchange tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120988A (en) * | 2017-05-26 | 2017-09-01 | 成都东浩散热器有限公司 | A kind of heat abstractor of automobile engine |
| CN112964087A (en) * | 2021-03-18 | 2021-06-15 | 中国船舶工业集团公司第七0八研究所 | Mobius type heat exchanger |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160622 |
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| RJ01 | Rejection of invention patent application after publication |