CN105318585B - A kind of solar energy heat collection pipe - Google Patents
A kind of solar energy heat collection pipe Download PDFInfo
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- CN105318585B CN105318585B CN201510876200.8A CN201510876200A CN105318585B CN 105318585 B CN105318585 B CN 105318585B CN 201510876200 A CN201510876200 A CN 201510876200A CN 105318585 B CN105318585 B CN 105318585B
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- 230000000694 effects Effects 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 8
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- 238000009413 insulation Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000004080 punching Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000127225 Enceliopsis nudicaulis Species 0.000 description 1
- 208000012868 Overgrowth Diseases 0.000 description 1
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- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/90—Solar heat collectors using working fluids using internal thermosiphonic circulation
- F24S10/95—Solar heat collectors using working fluids using internal thermosiphonic circulation having evaporator sections and condenser sections, e.g. heat pipes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Abstract
The invention provides a kind of solar energy heat collection pipe, the thermal-collecting tube includes heat absorbing part and heat release part, and the heat absorbing part absorbs solar energy, the water transferred heat to by heat release part in water tank；Characterized in that, the heat release portion of external sets transverse fin.Solar energy heat collection pipe of the present invention sets transverse fin by heat release portion of external, further enhances exothermal effect, has saved the energy.
Description
Technical field
The invention belongs to field of solar energy, more particularly to a kind of solar energy heat collection pipe.
Background technology
With the rapid development of modern social economy, the mankind are increasing to the demand of the energy.But coal, oil, day
The traditional energy storage levels such as right gas constantly reduce, are increasingly in short supply, cause rising steadily for price, while conventional fossil fuel causes
Problem of environmental pollution it is also further serious, these all limit the development of society and the raising of human life quality significantly.The energy
Problem has become most one of distinct issues of contemporary world.Thus seek the new energy, particularly free of contamination cleaning energy
Source has turned into the focus of present people research.
Solar energy is a kind of inexhaustible clean energy resource, and stock number is huge, and earth surface is received every year
Solar radiant energy total amount be 1 × 1018KWh, more than 10,000 times that gross energy is consumed for world's year.Countries in the world are all too
It is positive can by the use of as important one of new energy development, the Chinese government exists《The government work report》Also clearly propose to accumulate already
New energy is developed in pole, and wherein the utilization of solar energy is especially in occupation of prominent position.Reached yet with solar radiation tellurian
Energy density is small（About one kilowatt every square metre）, and be discontinuous again, this brings certain tired to large-scale utilization
It is difficult.Therefore, in order to utilize solar energy extensively, not only to solve technical problem, and economically must be able to conventional energy
Source mutually competes.
Generally, the water of heat collector heating needs to pass to other fluids by way of heat exchange, or carries out
Storage.But the water circulation system of solar thermal collection system is the system of a closing, recirculated water circulating-heating, but circulating
Some on-condensible gases can be produced in water cycle process, in addition, in the case that sometimes sunray is strong, the water meeting in heat collector
Steam water interface is formed, therefore in the case where the water of heating is exchanged heat, because on-condensible gas be present or because form vapour
Hydro-thermal water, so as to cause the reduction of the coefficient of heat transfer so that solar energy can not make full use of.
In view of the above-mentioned problems, the invention provides a kind of new solar water heater, so as to solve solar water and its
Fluid exchanged heat in the case of the coefficient of heat transfer it is low the problem of.
The content of the invention
The invention provides a kind of new solar energy system, so as to solve the technical problem above occurred.
To achieve these goals, technical scheme is as follows：
A kind of solar energy heat collection pipe, the thermal-collecting tube include heat absorbing part and heat release part, and the heat absorbing part absorbs too
Positive energy, the water transferred heat to by heat release part in water tank；Characterized in that, the heat release portion of external sets horizontal wing
Piece.
Preferably, the transverse fin is straight panel shape.
Preferably, along the flow direction of fluid, transverse fin height constantly increases.
It is preferably, increasing along the flow direction of fluid, highly increased amplitude.
Preferably, constantly reduced along the centre of thermal-collecting tube cross section to both sides, the height of the transverse fin.
Preferably, the transverse fin is parabolic type, wherein being parabola in the centre position of thermal-collecting tube cross section
Flex point.
Preferably, the amplitude of the height reduction of the transverse fin constantly increases.
Preferably, the flat tube includes tube wall parallel to each other, fluid passage is formed between the adjacent tube wall,
Heat pipe includes the fin being arranged in flat tube, and the fin is arranged on heat release part, and the fin is arranged between tube wall, institute
Stating fin includes the vertical component perpendicular to tube wall, prominent point is processed by impact style on vertical component, so that vertical component effect
Divide the fluid of both sides to pass through the hole that impact style is formed on vertical component to connect；It is described it is prominent point from vertical component along mixing logistics
Dynamic direction stretches out, and the prominent point is isosceles triangle, and the base of the isosceles triangle is arranged on vertical component, and
Perpendicular to tube wall, the distance of adjacent tube wall is H, and the length on isosceles triangle base is h, and the distance of adjacent vertical component is
W, the drift angle of isosceles triangle is b, and the angle of the flow direction of the prominent sharp bearing of trend and mixture is a, is met as follows
Formula：
c6*h/H=c1*Ln(L*sin(a)/w)+c2,
sin(b/2)=c3+c4*sin(a)-c5*(sin(a))2,
Wherein Ln is logarithmic function, and c1, c2, c3, c4, c5, c6 are coefficients,
0.237<c1<0.255, 0.675<c2<0.703,0.867<c3<0.885,0.673< c4<0.711,
1.135 <c5<1.152,
6.8<c6<7.6；
19°<a<71 °, 55 °<b<165°；
10mm<w<15mm, 6mm<H<14mm；
0.19<L*sin(a)/w<0.41, 0.29< c6*h/H<0.47；
H is with the distance between relative face of adjacent tube wall, and W is to be with the distance in the relative face of adjacent vertical component, L
Distance of the summit of isosceles triangle to base midpoint.
Preferably, absorption film is arranged on the front of thermal-collecting tube heat absorbing part, the i.e. one side towards the sun.
A kind of solar water heater, including foregoing thermal-collecting tube.
Preferably, the angle of the flow direction of the prominent sharp bearing of trend and fluid is a, same rake sets up separately
Multiple prominent points are put, along the flow direction of hot water, described angle a is less and less.
Preferably, same sloping portion sets multiple prominent points, multiple prominent points are staggeredly from the epitaxial lateral overgrowth of sloping portion two
Stretch.
Preferably, the length of the prominent point extension is L, same sloping portion sets multiple prominent points, along hot water
Flow direction, described length L are less and less.
Preferably, the prominent point is isosceles triangle, the base of the isosceles triangle is arranged on sloping portion, is made
To be preferred, base is identical with the angle of inclination of sloping portion, and the drift angle of the isosceles triangle is b, and same rake sets up separately
Multiple prominent points are put, along the flow direction of hot water, described drift angle b is increasing.
Preferably, the prominent point is isosceles triangle, the base of the isosceles triangle is arranged on sloping portion, is made
To be preferred, base is identical with the angle of inclination of sloping portion, and the base of the isosceles triangle is S1, and same rake sets up separately
Multiple prominent points are put, along the flow direction of hot water, described S1 is less and less.
Compared with prior art, solar water appliance of the invention has following advantage：
1）Solar energy heat collection pipe of the present invention sets transverse fin by heat release portion of external, further enhances heat release effect
Fruit, the energy is saved.
2）The prominent sharp plate wing fin of punching press is applied to solar heat-preservation system by the present invention, is solved containing fixed gas
The problem of heat exchange efficiency of body is low, the energy is greatly saved, has overcome the problem of solar heat-exchange system effectiveness is low, it will be apparent that
Improve heat exchange efficiency.
3）On the one hand laminar sublayer can be destroyed, on the other hand compared with " punching " fin, not because heat-transfer surface is lost in punching
Product, and " point " and " hole " can disturb fluid on different height respectively, strengthen different thermal resistance links；
4）The aperture that punching press " prominent point " is formed, by the influence of " prominent point " downstream pressure field, can be achieved fin media of both sides
Pressure and mass exchange, the stability of viscous sublayer and liquid film is damaged, enhanced heat exchange；
5）For the hot water containing on-condensible gas, it can be realized by " prominent point " and expand gas-liquid interface and gas phase boundary
With the contact area of cooling wall and strengthening disturbance；
6）By setting transverse fin in heat release portion of external, on the one hand reduce resistance of the water in water tank flow process
Power, while also further enhance heat transfer.
7）By setting change of the height of transverse fin on flat hot pipe width so that radiating effect is further
Improve.
8）By largely testing, it is determined that the physical dimension of optimal plate-fin radiating tube；
9）Distance by designing adjacent tube wall is H, and the length on isosceles triangle base is h, adjacent sloping portion
Distance be w, the drift angle of isosceles triangle is b, and the angle of the flow direction of the prominent sharp bearing of trend and hot water is a etc.
Change of the parameter along fluid flow direction, improve heat exchange efficiency or reduce Fluid pressure.
Brief description of the drawings
Fig. 1 is solar water heater overall structure diagram of the present invention；
Fig. 2 is the structural representation of thermal-collecting tube of the present invention；
Fig. 3 is solar water heater cross section structure schematic diagram of the present invention；
Fig. 4 is thermal-collecting tube heat release part cross-sectional structure schematic diagram of the present invention；
Fig. 5 is the structural representation that outside fin thermal-collecting tube cross section is set outside the present invention；
Fig. 6 is the structural representation in a thermal-collecting tube inner fin cross section of the invention；
Fig. 7 is the schematic diagram that thermal-collecting tube inner fin of the present invention sets sharp structure vertical part planar of dashing forward；
Fig. 8 is another schematic diagram that thermal-collecting tube inner fin of the present invention sets sharp structure vertical part planar of dashing forward；
Fig. 9 is that the triangle of inner fin of the present invention is dashed forward sharp structural representation；
Figure 10 is the section structural representation that inner fin triangle of the present invention is dashed forward in sharp runner；
The structural representation that the prominent point of Figure 11 present invention extends to vertical component both sides；
Figure 12 is the schematic diagram of Section A-A improved structure in Fig. 2；
Figure 13 is the schematic diagram of section B-B improved structure in Fig. 2.
Reference is as follows：
1 heat pipe, 2 fluid passages, 3 tube walls, 4 vertical components, 5 horizontal components, 6 prominent points, 7 fins, 8 heat absorbing parts, 9 water
Case, 10 heat release parts, 11 outside fins, 12 tank entry pipes, 13 vessel outlets, 14 bottom plates, 15 absorption films, 16 glass plates,
17 thermal insulation layers.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
Herein, if without specified otherwise, it is related to formula, "/" represents division, and "×", " * " represent multiplication.
The present invention relates to a kind of solar water heater, the structure of the solar water heater as Figure 1-3, the sun
Energy water heater includes water tank 9 and heat collector, and the heat collector includes thermal-collecting tube, and the thermal-collecting tube is preferably heat pipe 1.The thermal-arrest
Pipe includes heat absorbing part 8 and heat release part 10, and the heat release part 10 is arranged in water tank 9.Heat absorbing part 8 absorbs solar energy,
The water transferred heat to by heat release part 10 in water tank.The heat pipe is flat tube.The present invention by using flat hot pipe,
Reduce the height of heat pipe 1 so that the fluid in heat pipe can be distributed bigger area, so that the fluid in heat pipe can be abundant
Thermotube wall is contacted, ensures heat absorption and exothermal effect.
Preferably, the solar thermal collector also includes transparency glass plate 16, thermal insulation layer 17, absorption film 15, as excellent
Transparency glass plate 16 is selected to use safety glass, thermal insulation layer as vacuum layer.Absorption film 15 is arranged on the front of the heat absorbing part 8 of heat pipe 1
（I.e. towards the one side of the sun）, preferably, being arranged on the front of the heat absorbing part 8 of heat pipe 1 by way of sputtering or smearing, thoroughly
Bright glass plate 16 is covered in the front of the heat absorbing part 8 of heat pipe, and thermal insulation layer is left between heat absorbing part 8 and transparency glass plate 16
17, preferably, thermal insulation layer is vacuum layer.
Preferably, the thickness of thermal insulation layer 17 is 15mm~35mm；As preferably 23 mm.
As shown in figure 1, the both sides of water tank 9 set water inlet pipe 12 and outlet pipe 13 respectively, the water inlet pipe 12 is arranged on
The lower position of water tank 9, outlet pipe 13 are arranged on the upper position of water tank 9.
Preferably, preferably it is provided with as Figure 1-3 in embodiment outside the heat release part 10 of flat-plate heat pipe some
Metal radiating fin 11, preferably, fin 11 can be copper or aluminium manufacture.Preferably, fin 11 is transverse fin,
Because the water in water tank is from import to output flow, by setting transverse fin so that the setting direction of radiating fin 11 with
Water flow direction is parallel, reduces flow resistance.The best mode of the combination of the heat release part 10 of radiating fin 11 and heat pipe is
Welding manner, or using integral structure.
As shown in Fig. 2 the flat tube includes tube wall 3 parallel to each other, forming fluid between the adjacent tube wall 3 leads to
Road 2.Fin 7 is set inside flat tube 1, fin 7 is set preferably in the heat release part 10 of heat pipe 1.The fin 7 include with
The vertical vertical component 4 of tube wall 3, the vertical component are parallel to each other.
As shown in Figure 4,5, it is more so as to be divided into inside heat pipe 1 preferably, the vertical component connects tube wall 3 up and down
Individual passage aisle.Preferably, each microchannel hydraulic diameter is 2mm~8mm, optimal preferable single micro heat pipe hydraulic diameter is 4-
6mm, each microchannel are connected with each other independently of each other and by vertical component, are relatively support, are played a part of reinforcement, can be with
The structural strength of flat-plate heat pipe 1 is significantly improved, improves the reliability of flat-plate heat pipe 1.Self-assembling formation heat pipe effect in each microchannel,
The microchannel being arranged side by side forms micro channel array, and the hydraulic diameter of single micro heat pipe must not be less than 2mm so that micro heat pipe array
The overall thermotransport limit be higher than absorb solar energy ability, meanwhile, the hydraulic diameter of single microchannel must not be higher than 8mm,
So that the inside bearing capacity of single microchannel is higher than 20 atmospheric pressure.
The operation principle of solar thermal collector of the present invention is：Heat absorbing part 8 absorbs solar radiation, i.e. solar heat passes through
Glass plate by the heat absorbing part 8 of the flat-plate heat pipe organically combined with absorption film largely absorb (or perhaps be closely fitted with or
Sputtering has or applied the heat absorbing part 8 of the flat-plate heat pipe 1 of absorption film largely to absorb, and the heat absorbing part 8 of flat-plate heat pipe absorbs too indirectly
It is positive can be after radiations heat energy, the liquid working substance of its heat absorbing part 8 absorbs heat rapidly evaporation, the heat that high-temperature steam passes through each micro channel array
Tube effect enters heat release part by each microchannel tubing, carries out condensation heat release, that is to say, that in the other end of heat pipe 1, that is, exist
Heat release in water tank 9, in water tank, exchanged heat by heat release part 10 by each fin 11 and its tube wall of heat pipe heat release part 10 with water.
Preferably, prominent point 6 is processed by impact style on vertical component 4, so that the fluid of the both sides of vertical component 4
Connected by the hole formed on vertical component 4 by impact style；Described prominent sharp 6 stretch out from vertical component 4.
By setting prominent point 6, have the following advantages：
1）On the one hand laminar sublayer can be destroyed, does not lose heat exchange area, and " point " and " hole " can be respectively not
With disturbing fluid, enhanced heat exchange in height；
2）Punching press dash forward it is pointed into aperture, by the influence of prominent sharp downstream pressure field, the pressure of fin media of both sides can be achieved
Power and mass exchange, the stability of viscous sublayer and liquid film is damaged, enhanced heat exchange.
3）For fluid or two-phase fluid containing on-condensible gas, can be realized by " prominent point " expand gas-liquid interface with
And gas phase boundary and the contact area of cooling wall and strengthen disturbance.
Above-mentioned measure is taken in heat release part 10, the heat exchange efficiency of fluid can greatly be improved.With normal stream
Body heat exchange is compared, it is possible to increase 15-25% heat exchange efficiency.
Preferably, described prominent sharp 6 with the angle that the flow direction of fluid is formed be acute angle, it is necessary to explanation,
The flow direction of mentioned fluid refers to fluid from heat absorbing part to the flow direction of heat release part herein and below.
Preferably, as shown in fig. 6, described fin 7 is vertical-type fin, the fin 7 includes horizontal component 5 and hung down
Straight part 4, the horizontal component 5 is parallel with tube wall 3 and is sticked together with tube wall 3, the vertical component 4 and horizontal component 5
Connection.
The flow direction of fluid is from left to right in Fig. 7.But left and right herein simply illustrates fluid along prominent sharp flowing
Direction, it is not offered as actual certain left and right flowing.
As shown in Figure 10, the angle of the flow direction of prominent sharp 6 bearing of trend and fluid is a, as shown in fig. 6, edge
The flow direction of fluid, same vertical component 4 sets multiple prominent sharp 6, along the flow direction of fluid, described angle a
It is increasing.
It is found through experiments that, by becoming larger for angle a, compared with angle a is identical, it is possible to achieve higher changes
The thermal efficiency, it can about improve 10% or so heat exchange efficiency.
Preferably, the length of prominent sharp 6 extension is L, along the flow direction of fluid, same vertical component 4 is set
Multiple prominent sharp 6 are put, along the flow direction of fluid, described length L is increasing.Be found through experiments that, by length L by
Gradual change is big, compared with length L is identical, it is possible to achieve higher heat exchange efficiency, can about improve 9% or so heat exchange effect
Rate.
Preferably, along the flow direction of fluid, the amplitude that length L becomes big is less and less.It is found through experiments that, length
The amplitude that L change is big is less and less, it is ensured that in the case of heat exchange efficiency, further reduces flow resistance, can about drop
Low 5% or so flow resistance.
Preferably, described prominent sharp 6 be isosceles triangle, the base of the isosceles triangle is arranged on vertical component 4,
Preferably, base is identical with the vertical direction of vertical component, the drift angle of the isosceles triangle is b, along the flowing of fluid
Direction, same vertical component 4 set multiple prominent sharp 6, and along the flow direction of fluid, on base, length keeps constant situation
Under, described prominent pinnacle angle b is less and less.It is found through experiments that, by tapering into for the pinnacle angle b that dashes forward, with the complete phases of drift angle b
With compared with, it is possible to achieve higher heat exchange efficiency, can about improve 7% or so heat exchange efficiency.
Preferably, along the flow direction of fluid, the amplitude that drift angle b diminishes is less and less.It is found through experiments that, drift angle
The amplitude that b diminishes is less and less, it is ensured that in the case of heat exchange efficiency, further reduces flow resistance, can about reduce
4% or so flow resistance.
Preferably, described prominent sharp 6 be isosceles triangle, the base of the isosceles triangle is arranged on vertical component,
Preferably, base is identical with the vertical direction of vertical component, the base length of the isosceles triangle is h, along fluid
Flow direction, same vertical component 4 sets multiple prominent sharp 6, and along the flow direction of fluid, same vertical component 4 is set
Multiple prominent points, in the case where drift angle keeps constant, along the flow direction of fluid, described h is increasing.Sent out by testing
It is existing, by becoming larger for h, compared with h is identical, it is possible to achieve higher heat exchange efficiency, can about improve 7% or so
Heat exchange efficiency.
Preferably, along the flow direction of fluid, same vertical component sets multiple rows of prominent sharp 6, as shown in Figures 6 and 7, often
The distance between prominent point of row is S2, and along the flow direction of fluid, described S2 is increasing.Why it is arranged such, mainly
Purpose is big by S2 change, realizes in the case where ensureing heat exchange efficiency, further reduces flow resistance.Sent out by testing
Existing, flow resistance reduces by 10% or so.
The S2 is using the prominent sharp base of adjacent row as calculating distance.
Preferably, as shown in figure 8, multiple rows of prominent sharp 6 be shifted structure.Fluid is to flow from top to bottom in Fig. 8.But herein
Simply explanation fluid along prominent sharp flow direction, is not offered as actual certain flow up and down up and down.
Find in an experiment, the distance of adjacent tube wall 3 can not be excessive, and crossing conference causes the reduction of heat exchange efficiency, too small meeting
Cause flow resistance excessive, similarly, for the base length of isosceles triangle, drift angle, prominent point, fin vertical component distance with
The angle of fluid flow direction all can not be excessive or too small, the excessive or too small reduction or flowing that can all cause heat exchange efficiency
The change of resistance is big, therefore distance in adjacent tube wall 3, the base length of isosceles triangle, drift angle, prominent point, fin vertical component
Meet the size relationship of an optimization between the angle of fluid flow direction.
Therefore, the present invention is the thousands of secondary numerical simulations and test data by multiple various sizes of heat exchangers,
In the case of meeting industrial requirements pressure-bearing（Below 10MPa）, in the case where realizing maximum heat exchange amount, the optimal heat exchange that sums up
The dimensionally-optimised relation of tube wall.
Preferably, the prominent point is isosceles triangle, the base of the isosceles triangle is arranged on vertical component, excellent
Perpendicular to tube wall, the distance of adjacent tube wall is H for choosing, and the length on isosceles triangle base is h, the distance of adjacent vertical component
For w, the drift angle of isosceles triangle is b, and the angle of the flow direction of the prominent sharp bearing of trend and mixture is a, is met such as
Lower formula：
c6*h/H=c1*Ln(L*sin(a)/w)+c2,
sin(b/2)=c3+c4*sin(a)-c5*(sin(a))2,
Wherein Ln is logarithmic function, and c1, c2, c3, c4, c5, c6 are coefficients,
0.237<c1<0.255, 0.675<c2<0.703,0.867<c3<0.885,0.673< c4<0.711,
1.135 <c5<1.152,
6.8<c6<7.6；
19°<a<71 °, 55 °<b<165°；
10mm<w<15mm, 6mm<H<14mm；
0.19<L*sin(a)/w<0.41, 0.29< c6*h/H<0.47；
H is with the distance between relative face of adjacent tube wall, and W is to be with the distance in the relative face of adjacent vertical component, L
Distance of the summit of isosceles triangle to base midpoint.
Preferably, c1=0.243, c2=0.696,
C3=0.878, c4=0,689, c5=1.142, c6=7.2.
By the optimal geometric scale of " the prominent point " that goes out of above-mentioned formula, heat exchange efficiency can be improved, while can be real
The reinforcing of gas phase boundary different scale internal thermal resistance, avoiding measures mistake are now included only to viscous sublayer or comprising liquid film and extremely
Degree, causes unnecessary drag losses.
Preferably, the adjacent prominent sharp base of described same row is all on one wire, the adjacent prominent point of same row
Distance is S1, the 2.8 × h<S1<3.6 × h, wherein S1 are with the midpoint on the base of the prominent point of two neighboring isosceles triangle
Distance.Preferably 3.1 × h=S1.
Preferably, the base of the prominent sharp isosceles triangle of adjacent row is parallel to each other, the summit of isosceles triangle is on earth
The distance at side midpoint is L, and the distance S2 of adjacent row is 3.4*L<S2<5.0*L.Preferably S2=4.3*L.
During the base difference of the isosceles triangle of adjacent row, the weighted average on two bases are taken to calculate.
Preferably, the angle of the isosceles triangle of same row is identical with base.I.e. shape is identical, is equal
Shape.
For formula above, for the different prominent point of front and rear row size, also still it is applicable.
Preferably, the wall thickness of fin is 0.4-1.1mm；Preferably, 0.6-0.9mm.
For the specific dimensional parameters do not mentioned, it is designed according to normal heat exchanger.
Preferably, as shown in figure 11, multiple prominent sharp 6 are set on vertical component, difference of the prominent point to vertical component
Side extends
Preferably, same vertical component sets multiple rows of prominent point, the prominent point of an at least row arranges prominent point to vertical component effect with other
The extension side divided is different.
Preferably, the adjacent prominent point of often row extends to the not homonymy of vertical component.
By being arranged such, fluid can be caused to replace heat exchanging tampering in the passage of vertical component both sides, further carried
High heat exchange efficiency.Compared with the same side, it is possible to increase 8% or so.
Preferably, as shown in Fig. 2,5,12,13, horizontal wing is set described in the tube wall 3 in heat pipe 1 outside heat absorbing part 8
Piece 11.
Preferably, the fin 11 is straight panel shape.
Preferably, along the flow direction of fluid, the height of outside fin 11 constantly get over by increase, highly increased amplitude
Come bigger.By increasing fin height, so as to increase the heat exchange area of fin.Experiment is found, by being arranged such, with fin height
Spend the identical heat exchange efficiency compared, about 5% can be improved.
Preferably, as shown in Figure 12,13, along the centre of the cross section of heat pipe 1 to both sides, the height of the fin 11 is not
It is disconnected to reduce.Wherein, positioned at the centre position of heat pipe 1, the height highest of fin.
Because being found by experiment that, heat pipe is most in middle part radiating, and from middle part to both sides, radiating tapers into, therefore logical
Cross the outside fin height change that heat pipe is set, so that the area of dissipation of heat pipe is maximum at middle part, minimum in both sides so that
Middle part heat-sinking capability is maximum, so meets the heat dissipation law of heat pipe heat so that heat pipe heat radiation is uniform on the whole, avoids heat pipe office
Portion's temperature overheating, cause radiating effect excessively poor, cause the shortening in heat pipe life-span.
Preferably, as shown in Figure 12,13, the fin 11 is parabolic type, wherein the interposition in the cross section of heat pipe 1
It is set to parabolical flex point.
Preferably, as shown in Figure 12,13, the fin 11 is circular arc type.
Preferably, from centre to both sides, the amplitude of the height reduction of the fin 11 constantly increases.
By above-mentioned setting, and meet the heat dissipation law of heat pipe, further improve the heat exchange efficiency of heat pipe, increase heat pipe
Life-span.
Preferably, the heat pipe is gravity assisted heat pipe.
Preferably, the inside of the heat pipe sets capillary materials.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to this.Any art technology
Personnel, without departing from the spirit and scope of the present invention, it can make various changes or modifications, therefore protection scope of the present invention should
It is defined when by claim limited range.
Claims (3)
1. a kind of solar energy heat collection pipe, the thermal-collecting tube includes heat absorbing part and heat release part, and the heat absorbing part absorbs the sun
Can, the water transferred heat to by heat release part in water tank；Characterized in that, the heat release portion of external sets horizontal wing
Piece；
The transverse fin is straight panel shape；
Along the flow direction of fluid, the constantly increase of transverse fin height；
Along the flow direction of fluid, highly increased amplitude is increasing；
Constantly reduced along the centre of thermal-collecting tube cross section to both sides, the height of the transverse fin；
The transverse fin is parabolic type, wherein being parabolical flex point in the centre position of thermal-collecting tube cross section；
The amplitude of the height reduction of the transverse fin constantly increases；
The thermal-collecting tube is flat tube, and flat tube includes tube wall parallel to each other, stream is formed between the tube wall parallel to each other
Body passage；Fin is set in the heat release part of flat tube；The fin includes the vertical component vertical with tube wall, described vertical
Part is parallel to each other；Prominent point is processed by impact style on vertical component, so that the fluid of vertical component both sides is by hanging down
The hole connection that the straight upper impact style in part is formed；The prominent point stretches out from vertical component along mixture flow direction, institute
It is isosceles triangle to state prominent point, and the base of the isosceles triangle is arranged on vertical component, the drift angle of the isosceles triangle
For b, same sloping portion sets multiple prominent points, and along the flow direction of fluid, described drift angle b is increasing.
2. solar energy heat collection pipe as claimed in claim 1, absorption film is arranged on the front of thermal-collecting tube heat absorbing part, i.e., towards too
The one side of sun.
3. a kind of solar water heater, it is characterised in that include one of claim 1-2 thermal-collecting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510876200.8A CN105318585B (en) | 2015-12-03 | 2015-12-03 | A kind of solar energy heat collection pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510876200.8A CN105318585B (en) | 2015-12-03 | 2015-12-03 | A kind of solar energy heat collection pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105318585A CN105318585A (en) | 2016-02-10 |
| CN105318585B true CN105318585B (en) | 2018-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510876200.8A Expired - Fee Related CN105318585B (en) | 2015-12-03 | 2015-12-03 | A kind of solar energy heat collection pipe |
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| Country | Link |
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| CN (1) | CN105318585B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2253448Y (en) * | 1996-02-14 | 1997-04-30 | 张心颖 | Split assembled heat pipe solar water heater |
| CN201593877U (en) * | 2009-07-21 | 2010-09-29 | 广东德豪润达电气股份有限公司 | Solar thermal collector |
| CN102607200A (en) * | 2012-03-19 | 2012-07-25 | 姚卫国 | Inorganic high-efficiency flat superconducting flat-plate solar collector |
| CN204142069U (en) * | 2014-10-08 | 2015-02-04 | 贵州晟泰铝业有限公司 | A kind of aluminum heat radiating flat tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070012430A1 (en) * | 2005-07-18 | 2007-01-18 | Duke Brian E | Heat exchangers with corrugated heat exchange elements of improved strength |
-
2015
- 2015-12-03 CN CN201510876200.8A patent/CN105318585B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2253448Y (en) * | 1996-02-14 | 1997-04-30 | 张心颖 | Split assembled heat pipe solar water heater |
| CN201593877U (en) * | 2009-07-21 | 2010-09-29 | 广东德豪润达电气股份有限公司 | Solar thermal collector |
| CN102607200A (en) * | 2012-03-19 | 2012-07-25 | 姚卫国 | Inorganic high-efficiency flat superconducting flat-plate solar collector |
| CN204142069U (en) * | 2014-10-08 | 2015-02-04 | 贵州晟泰铝业有限公司 | A kind of aluminum heat radiating flat tube |
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| Publication number | Publication date |
|---|---|
| CN105318585A (en) | 2016-02-10 |
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