CN107843615A - A kind of ultrasonic field strengthens complicated micro lubricative pores array microchannel boiling heat transfer device - Google Patents
A kind of ultrasonic field strengthens complicated micro lubricative pores array microchannel boiling heat transfer device Download PDFInfo
- Publication number
- CN107843615A CN107843615A CN201710910970.9A CN201710910970A CN107843615A CN 107843615 A CN107843615 A CN 107843615A CN 201710910970 A CN201710910970 A CN 201710910970A CN 107843615 A CN107843615 A CN 107843615A
- Authority
- CN
- China
- Prior art keywords
- micro
- heat transfer
- ultrasonic
- transfer device
- channel
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention discloses a kind of ultrasonic field and strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, including supersonic generator, heat transfer experiments section, some ultrasonic oscillators, described heat transfer experiments section from top to bottom includes the upper cover plate being sequentially connected successively, oscillating plate, visualize cover plate, micro-channel evaporator, experimental section cavity, calandria, insulator, base cover plate, some single head heating tubes are evenly arranged with the base cover plate, the ultrasonic oscillator is fixed on oscillating plate and is connected respectively with supersonic generator circuit, the micro-channel evaporator includes plate-shaped bar body, the upper surface of the main body is arranged with some rectangle micro-channels in parallel along its length, the single micro-channel bottom table internal arrangement is provided with down the micro lubricative pores array of " Ω " font.The present invention activates cavity by being provided with easy gas collection augmentation of heat transfer on exchanger base surface, while applies ultrasonic wave action bubble departure, and directly increase departs from frequency, so as to reach augmentation of heat transfer purpose.
Description
Technical field
The present invention relates to a kind of micro-channel phase transformation strengthening field of heat transfer, and in particular to a kind of ultrasonic field is strengthened complicated microcosmic
Cavity array microchannel boiling heat transfer device.
Technical background
With the development of science and technology electronic unit and equipment tend to integrated, the heat-transfer equipment of the big passage of tradition can not expire
The diabatic process of sufficient electronic chip, the fine sizes passage with high surface area ratio and heat exchange efficiency turn into current Technological research
Augmentation of heat transfer important development direction.
Microstructure heat exchanger not only has efficiently excellent heat exchange property, and simple in construction, compact, in order to further
The heat exchange efficiency of micro-channel heat exchanger is efficiently improved, researchers are based on engineering means, are surface-treated from conduit, additional
Field etc. carries out augmentation of heat transfer, although heat transfer type can substantially meet current cooling requirements mostly at present, in some high-tech
Product such as heat dissipation problem, the cooling requirements such as the radiating of space rocket propeller, nuclear reactor are much not met by, in this background
Under, a kind of additional ultrasonic field of invention strengthens complicated micro lubricative pores array microchannel boiling heat transfer method, is exchanged heat for micro-channel
Device phase-change heat transfer, so as to increase heat dissipation capacity, the method can be used for testing dynamic phase transitions mistake in additional sound field reflecting micro-channel
Journey and its enhanced heat transfer character, workable, augmentation of heat transfer efficiency high.
The content of the invention
For above-mentioned technical problem, the invention provides a kind of additional ultrasonic field to strengthen complicated micro lubricative pores array microchannel
Boiling heat transfer device.
The present invention is achieved through the following technical solutions：
A kind of ultrasonic field strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, including supersonic generator, changes
Heat test section, some ultrasonic oscillators, described heat transfer experiments section from top to bottom include upper cover plate, the vibration being sequentially connected successively
Plate, visualization cover plate, micro-channel evaporator, experimental section cavity, calandria, insulator, base cover plate, in the base cover plate
It is evenly arranged with and is upward through some single head heating tubes that insulator goes directly in calandria, the ultrasonic oscillator is along its length
Uniformly it is fixed on the oscillating plate and respectively with supersonic generator circuit and is connected, the micro-channel evaporator includes flat board
Shape main body, the upper surface of the main body are arranged with some rectangle micro-channels, the single micro-channel in parallel along its length
Bottom table internal arrangement is provided with down the micro lubricative pores array of " Ω " font.
Further, the sectional dimension of described micro-channel is 1.5mm × 1.5mm.
Further, the spacing distance of the micro lubricative pores array is 0.3mm~0.4mm, in the single micro-channel
Face arranges 4~5 rows, 490~647 row micro lubricative pores.
Further, the angle of the upper shed wall of the micro lubricative pores and the micro-channel basal surface is more than described fine
The static contact angle θ of passage basal surface.
Further, upper shed diameter 0.014mm≤D≤0.67mm of the micro lubricative pores.
Further, the depth of the micro lubricative pores is 0.4mm~0.6mm.
Further, described micro-channel basal surface is provided with hydrophobe spaced apart areas along heat-exchange working medium flow direction.
Further, the rated power of described supersonic generator is 800-1500W, and the ultrasonic oscillator frequency is
20kHz-60kHz。
Further, some screws are welded with described oscillating plate vertically, the ultrasonic oscillator 2 passes through the screw
And freezing plastic hydropexis is on oscillating plate, ultrasonic wave is delivered to inside micro-channel evaporator by ultrasonic oscillator during vibration.
Further, described single head heating tube is electric heating tube.
Compared with prior art, the present invention plays boiling principle based on ultrasonic vibration and activation core, inside the table of micro-channel bottom
Add " Ω " font micro lubricative pores array and flow through surface in heat-exchange working medium and the alternate region of hydrophobe is set, effectively facilitate core
State boiling heat transfer, and hydrophilic surface is easy to the supplement of liquid after bubble departure, hydrophobic surface can increase bubble departure frequency, together
When the alternate striped of hydrophobe be easy to automatically cleaning；Meanwhile bubble departure is influenceed by applying additional ul-trasonic irradiation, directly increase is de-
Off-frequency rate, strengthen so as to reach.
Brief description of the drawings
Fig. 1 is that the complicated micro lubricative pores array microchannel boiling heat transfer device of additional ultrasonic field reinforcing of the embodiment of the present invention is whole
Body structural representation.
The local heat transfer section exploded perspective view of Fig. 2 embodiment of the present invention.
Fig. 3 is the micro-channel evaporator schematic front view of the complicated micro lubricative pores array of tool of the embodiment of the present invention.
Fig. 4 is the micro-channel evaporator left view schematic diagram of the complicated micro lubricative pores array of tool of the embodiment of the present invention.
Fig. 5 is that the micro lubricative pores amplification of the micro-channel evaporator of the complicated micro lubricative pores array of tool of the embodiment of the present invention is shown
It is intended to.
Fig. 6 is the mathematical heat transfer test model schematic diagram of the embodiment of the present invention.
In figure：1- supersonic generators；2- ultrasonic oscillators；3- heat transfer experiments sections；31- upper cover plates；32- oscillating plates；33-
Visualize cover plate；34- micro-channel evaporators；35- experimental section cavitys；36- calandrias；The insulators of 37- first；38- second every
Hot body；39- single head heating tubes；310- base cover plates.
Embodiment
The goal of the invention of the present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, embodiment is not
It can repeat one by one herein, but therefore embodiments of the present invention are not defined in following examples.
As shown in Figures 1 to 5, a kind of ultrasonic field strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, including
Supersonic generator 1, heat transfer experiments section 3, some ultrasonic oscillators 2, described heat transfer experiments section 3 from top to bottom successively include according to
Upper cover plate 31, oscillating plate 32, visualization cover plate 33, micro-channel evaporator 34, experimental section cavity 35, the calandria of secondary connection
36th, insulator, base cover plate 310, it is evenly arranged with the base cover plate 310 and is upward through insulator and goes directly in calandria 36
Some single head heating tubes 39, described single head heating tube 39 is electric heating tube and power adjustable；The ultrasonic oscillator 2 is along length
Degree direction, which is uniformly fixed on the oscillating plate 32 and respectively with the circuit of supersonic generator 1, to be connected, the micro-channel evaporation
Device 34 includes plate-shaped bar body, and the upper surface of the main body is arranged with some rectangle micro-channels in parallel along its length, single
The micro-channel bottom table internal arrangement is provided with down the micro lubricative pores array of " Ω " font.The insulator includes being overlapped mutually
The first insulator 37, the second insulator 38.
If Fig. 3 is into Fig. 4 the present embodiment, the sectional dimension of described micro-channel is 1.5mm × 1.5mm, and passage is a length of
196mm.The spacing distance of the micro lubricative pores array is 0.3mm~0.4mm, arrangement 4~5 inside the single micro-channel
Row, 490~647 row micro lubricative pores.
The angle of the upper shed wall of the micro lubricative pores and the micro-channel basal surface is more than micro-channel bottom table
The static contact angle θ in face, in the present embodiment, static contact angle θ=60 ° of micro-channel basal surface.Described micro-channel bottom
Surface is provided with hydrophobe spaced apart areas along heat-exchange working medium flow direction, and hydrophilic surface is easy to the benefit of liquid after bubble departure
Fill, hydrophobic surface can increase bubble departure frequency, while the alternate striped of hydrophobe is easy to automatically cleaning.
The upper shed diameter D=0.2mm of the micro lubricative pores, the depth of the micro lubricative pores are 0.6mm, above cavity chi
Very little feature can activate cavity, and cavity lower curtate is provided with spherical " the cavity mouth " of easy gas collection, a diameter of 0.4mm, such a cavity shape
Shape is easy to gas collection, and easy steam bubble is nucleated (as shown in Figure 5).
The rated power of described supersonic generator 1 is 1000W, and the frequency of ultrasonic oscillator 2 is 20kHz-
60kHz.Some screws are welded with described oscillating plate 32 vertically, the ultrasonic oscillator 2 passes through the screw and freezing plastic
Hydropexis is on oscillating plate 32, and ultrasonic wave is delivered to inside micro-channel evaporator 34 by ultrasonic oscillator 2 during vibration.
The manufacture method of the micro-channel evaporator 34, including step：
1) direct metal laser sintering (DMLS) micro-channel evaporator in metal 3D printing method is used；
2) set in the heat-exchange working medium flow direction difference mass dryness fraction region of micro-channel evaporator surface by chemical deposition
Put hydrophobe spaced apart areas.
Further, the passing through of heat-exchange working medium flow direction difference mass dryness fraction region in micro-channel evaporator surface
The step of deposition sets hydrophobe spaced apart areas is learned to specifically include：
It is 10mm and different in width to set spacing by chemical deposition in heat-exchange working medium flow direction difference mass dryness fraction region
Hydrophilic region, mass dryness fraction less than 0.1 region set width be 2mm hydrophobic region, mass dryness fraction be 0.1~0.2 region set
The hydrophobic region that width is 1mm is put, it is complicated so as to form the alternate tool of hydrophobe in region of the mass dryness fraction more than 0.3 without hydrophobic striped
The micro-channel evaporator of micro lubricative pores array.In the present embodiment, because hydrophilic surface is easy to the benefit of liquid after bubble departure
Fill, hydrophobic surface can increase bubble departure frequency, while the alternate striped of hydrophobe is easy to automatically cleaning, therefore can effectively improve steaming
The heat transfer effect and durability of device are sent out, reduces maintenance cost.
The single channel cross-section figure of micro-channel evaporator 34 in heat transfer experiments section 3 is as shown in fig. 6, based on heat exchange
The principle of energy balance in micro-channel evaporator 34, establishes augmentation of heat transfer mathematical modeling in micro-channel, and heat transfer coefficient h is strong
Changing the specific test mathematical modeling of heat transfer is：
qe(Wch+2Ww)=h (Tw-Tsat)(Wch+2ηHch) (1)
T in formulasatFor refrigerant saturation temperature (unit：℃)；Fin heat transfer efficiency of the η between micro-channel, qeFor heat
Current density (unit：kw/m2), TwFor channel wall temperature (unit：DEG C), WwFor the spacing distance of single passage, WchLead to be single
The width in road, HchFor the depth of single passage.
T in formulaj, TiRepresent the temperature of measurement wall point up and down, H2In expression temperature measuring point to channel wall distance (unit：
DEG C), H1For the distance (unit of lower temperature measuring point to upper temperature measuring point：℃).
The above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to the present invention
Embodiment restriction.For those of ordinary skill in the field, can also make on the basis of the above description
Other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all the present invention
All any modification, equivalent and improvement made within spirit and principle etc., should be included in the protection of the claims in the present invention
Within the scope of.
Claims (10)
1. a kind of ultrasonic field strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, it is characterised in that：Including ultrasonic wave
Generator (1), heat transfer experiments section (3), some ultrasonic oscillators (2), described heat transfer experiments section (3) are from top to bottom included successively
The upper cover plate (31) of connection, oscillating plate (32), visualization cover plate (33), micro-channel evaporator (34), experimental section cavity (35),
Calandria (36), insulator, base cover plate (310), are evenly arranged with that to be upward through insulator straight on the base cover plate (310)
Up to some single head heating tubes (39) in calandria (36), the ultrasonic oscillator (2) is uniformly fixed on described along its length
It is connected on oscillating plate (32) and respectively with supersonic generator (1) circuit, the micro-channel evaporator (34) includes tabular
Main body, the upper surface of the main body are arranged with some rectangle micro-channels, the single micro-channel bottom in parallel along its length
Table internal arrangement is provided with down the micro lubricative pores array of " Ω " font.
2. ultrasonic field according to claim 1 strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, its feature
It is：The sectional dimension of described micro-channel is 1.5mm × 1.5mm.
3. ultrasonic field according to claim 1 strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, its feature
It is：The spacing distance of the micro lubricative pores array is 0.3mm ~ 0.4mm, 4 ~ 5 rows of the single micro-channel the inside arrangement,
490 ~ 647 row micro lubricative pores.
4. ultrasonic field according to claim 1 strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, its feature
It is：The angle of the upper shed wall of the micro lubricative pores and the micro-channel basal surface is more than the micro-channel basal surface
Static contact angleθ。
5. ultrasonic field according to claim 1 strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, its feature
It is：Upper shed diameter 0.014mm≤D≤0.67mm of the micro lubricative pores.
6. ultrasonic field according to claim 1 strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, its feature
It is：The depth of the micro lubricative pores is 0.4 mm ~ 0.6mm.
7. ultrasonic field according to claim 1 strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, its feature
It is：Described micro-channel basal surface is provided with hydrophobe spaced apart areas along heat-exchange working medium flow direction.
8. ultrasonic field according to claim 1 strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, its feature
It is：The rated power of described supersonic generator (1) is 800-1500W, and ultrasonic oscillator (2) frequency is 20kHz-
60kHz。
9. ultrasonic field according to claim 1 strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, its feature
It is：Some screws are welded with described oscillating plate (32) vertically, the ultrasonic oscillator (2) passes through the screw and solidification
Glue is fixed on oscillating plate (32), and ultrasonic wave is delivered in micro-channel evaporator (34) by ultrasonic oscillator (2) during vibration
Portion.
10. ultrasonic field according to claim 1 strengthens complicated micro lubricative pores array microchannel boiling heat transfer device, its feature
It is：Described single head heating tube (39) is electric heating tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710910970.9A CN107843615A (en) | 2017-09-29 | 2017-09-29 | A kind of ultrasonic field strengthens complicated micro lubricative pores array microchannel boiling heat transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710910970.9A CN107843615A (en) | 2017-09-29 | 2017-09-29 | A kind of ultrasonic field strengthens complicated micro lubricative pores array microchannel boiling heat transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107843615A true CN107843615A (en) | 2018-03-27 |
Family
ID=61661517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710910970.9A Pending CN107843615A (en) | 2017-09-29 | 2017-09-29 | A kind of ultrasonic field strengthens complicated micro lubricative pores array microchannel boiling heat transfer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107843615A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110557934A (en) * | 2019-09-18 | 2019-12-10 | 华南理工大学 | Sound field enhanced nano fluid phase change heat transfer micro-channel heat exchanger |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294780A (en) * | 2007-04-25 | 2008-10-29 | 中国科学院工程热物理研究所 | Method and device for acoustic cavitation and titanium dioxide nano particle controlling boiling and heat conduction |
| CN102878845A (en) * | 2012-09-18 | 2013-01-16 | 华南理工大学 | Inner groove porous strengthened boiling micro-channel structure, manufacture method and application |
| CN104154777A (en) * | 2014-08-01 | 2014-11-19 | 厦门大学 | Micro-channel heat exchanger with staggered inner groove structure and manufacturing method of micro-channel heat exchanger |
| CN105738410A (en) * | 2016-02-29 | 2016-07-06 | 华南理工大学 | Nano fluid-enhanced heat transfer characteristic test system with low surface energy evaporator |
| CN106802095A (en) * | 2017-01-20 | 2017-06-06 | 中国石油大学(华东) | A kind of microchannel cooling |
-
2017
- 2017-09-29 CN CN201710910970.9A patent/CN107843615A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294780A (en) * | 2007-04-25 | 2008-10-29 | 中国科学院工程热物理研究所 | Method and device for acoustic cavitation and titanium dioxide nano particle controlling boiling and heat conduction |
| CN102878845A (en) * | 2012-09-18 | 2013-01-16 | 华南理工大学 | Inner groove porous strengthened boiling micro-channel structure, manufacture method and application |
| CN104154777A (en) * | 2014-08-01 | 2014-11-19 | 厦门大学 | Micro-channel heat exchanger with staggered inner groove structure and manufacturing method of micro-channel heat exchanger |
| CN105738410A (en) * | 2016-02-29 | 2016-07-06 | 华南理工大学 | Nano fluid-enhanced heat transfer characteristic test system with low surface energy evaporator |
| CN106802095A (en) * | 2017-01-20 | 2017-06-06 | 中国石油大学(华东) | A kind of microchannel cooling |
Non-Patent Citations (1)
| Title |
|---|
| 罗小平 等: "制冷系统不同表面能微通道的流动沸腾传热特性试验", 《农业工程学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110557934A (en) * | 2019-09-18 | 2019-12-10 | 华南理工大学 | Sound field enhanced nano fluid phase change heat transfer micro-channel heat exchanger |
| CN110557934B (en) * | 2019-09-18 | 2024-02-13 | 华南理工大学 | Sound field enhanced nanofluid phase-change heat transfer micro-channel heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Naqiuddin et al. | Overview of micro-channel design for high heat flux application | |
| CN107607580A (en) | Additional ultrasound-enhanced complicated micro lubricative pores array microchannel boiling heat transfer experiment system | |
| US7450386B2 (en) | Phase-separated evaporator, blade-thru condenser and heat dissipation system thereof | |
| Chen et al. | Application status and prospect of spray cooling in electronics and energy conversion industries | |
| CN111447797B (en) | Heat pipe system with jet holes distributed in size and self-turbulent flow cooling system | |
| Jiang et al. | Experimental study on heat transfer performance of a novel compact spray cooling module | |
| CN106785822B (en) | A kind of system and method for cooling superelevation heat flow density heat source | |
| CN110282596A (en) | The microchannel boiling heat transfer system and method staggeredly divided based on vapour-liquid heterogeneous fluid | |
| CN110475465B (en) | Heat pipe system with jet hole height changing | |
| Saleem et al. | An investigation on exergy in a wavy wall microchannel heat sink by using various nanoparticles in fluid flow: two-phase numerical study | |
| EP3907457B1 (en) | Boiling enhancement apparatus | |
| CN110662403A (en) | Jet cooling device for array turbulence column | |
| US12010816B2 (en) | Nucleation control system and method leading to enhanced boiling based electronic cooling | |
| CN107843615A (en) | A kind of ultrasonic field strengthens complicated micro lubricative pores array microchannel boiling heat transfer device | |
| CN106323060A (en) | Vapor chamber | |
| CN110470159A (en) | A kind of heat pipe of condensation end length gradual change | |
| CN108321135A (en) | A kind of columnar chip enhanced boiling heat transfer micro-structure of combined type and its manufacturing method | |
| Godi et al. | Forced convection heat transfer in micro heat sinks with square and circular configuration | |
| CN108601289A (en) | A kind of micro-channel heat sink with special flow dividing structure | |
| CN108598053A (en) | A kind of efficient microchannel jet stream is heat sink | |
| CN110174017B (en) | Phase change energy storage device and heat cyclic utilization system | |
| CN216700767U (en) | Self-oscillation jet flow micro-channel radiator | |
| CN206177110U (en) | Vapor chamber | |
| Kaldgi et al. | Transient Heat Transfer Analysis Of Dimpled Rod | |
| CN207280231U (en) | A kind of micro-channel evaporator for having complicated micro lubricative pores array |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180327 |