CN105737404A - Solar heat collector with high corrosion resistance - Google Patents
Solar heat collector with high corrosion resistance Download PDFInfo
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- CN105737404A CN105737404A CN201610144555.2A CN201610144555A CN105737404A CN 105737404 A CN105737404 A CN 105737404A CN 201610144555 A CN201610144555 A CN 201610144555A CN 105737404 A CN105737404 A CN 105737404A
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- collecting tube
- intercommunicating pore
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- 239000011148 porous material Substances 0.000 claims description 50
- 239000011248 coating agent Substances 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 239000002562 thickening agent Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
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- 239000002270 dispersing agent Substances 0.000 claims description 7
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
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- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 238000003618 dip coating Methods 0.000 claims description 3
- 229920000191 poly(N-vinyl pyrrolidone) Polymers 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
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- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 3
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- 229910052684 Cerium Inorganic materials 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/40—Preventing corrosion; Protecting against dirt or contamination
-
- 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
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/72—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits being integrated in a block; the tubular conduits touching each other
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a solar heat collector which comprises two tube plate structures. A certain included angle is formed between the two tube plate structures. The direction of the included angle is opposite to the bending direction of an arc structure of a reflector. The focal point of the reflector is located within the included angle formed by the tube plate structures. Inner fins are arranged in heat collecting tubes and connected with opposite corners of a rectangle. The interiors of the heat collecting tubes are divided into a plurality of small channels through the inner fins. Communicating holes are formed in the inner fins. The outer surfaces of the heat colleting tubes and the outer surfaces of heat collecting plates are coated with anti-corrosion layers. The surface of the heat collector is coated with a corrosion-resisting material, so that the corrosion resistance of the heat collecting tubes is increased, and the service life is prolonged.
Description
Technical field
The invention belongs to field of solar energy, particularly relate to a kind of solar thermal collector.
Background technology
Along with the high speed development of modern social economy, the mankind are increasing to the demand of the energy.But the traditional energy storage levels such as coal, oil, natural gas constantly reduce, day by day in short supply, cause rising steadily of price, the problem of environmental pollution that conventional fossil fuel causes simultaneously is also further serious, the raising of these development that all significantly limit society and human life quality.Solar heat converts and is that a kind of energy conversion efficiency and utilization rate be high and Solar use mode with low cost, that can be widely popularized in the whole society.In solar energy heat utilization device, it is important to solar radiant energy will be converted to heat energy, it is achieved the device of this conversion is called solar thermal collector.But inside current solar thermal collector, fin is set, to strengthen heat exchange.
Giving the solar thermal collector of a kind of tube-sheet type structure in prior art, thermal-collecting tube corrosion resistance is not enough, thus causing reduce service life.
Summary of the invention
It is desirable to provide the solar thermal collector of a kind of energy-conserving and environment-protective, improve a kind of new heat collector.
To achieve these goals, technical scheme is as follows: a kind of solar thermal collector, including thermal-collecting tube, reflecting mirror and collecting plate, connected by collecting plate between two adjacent thermal-collecting tubes, so that forming tube plate structure between multiple thermal-collecting tube and adjacent collecting plate；Described solar energy collector system includes two pieces of tube plate structures, between described two pieces of tube plate structures, shape is at a certain angle, described angle direction is relative with the direction of the circular arc line structural bending of reflecting mirror, the focus of reflecting mirror is between the angle that tube plate structure is formed, the cross section of described thermal-collecting tube is rectangle, and described collecting plate connects rectangular angle；
Described thermal-collecting tube and collecting plate outer surface coating anticorrosive coat.
As preferably, described anticorrosive coat is anticorrosive paint.
As preferably, anticorrosive paint is become to be grouped into by following: zinc flake 8.3%, aluminium oxide is 8%, and boric acid is 7.3%, and acrylic acid is 0.7%, and wetting dispersing agent is 0.4%, and thickening agent is 0.15%, and defoamer is 0.23%, the water of surplus；
This kind of coating is applied over finned tube surface by spraying, brushing, dip-coating, dries 10～60 minutes for 80 ± 10 DEG C, and 280 ± 40 DEG C solidify sintering 30～60 minutes, form good anti-corrosion coating.
As preferably, described wetting dispersing agent is the SA-20 in peregal series, and described thickening agent selects hydroxyethyl cellulose；Tributyl phosphate selected by described defoamer.
As preferably, arranging inner fin inside described thermal-collecting tube, described inner fin connects rectangular diagonal angle, and described inner fin will be divided into multiple passage aisle inside thermal-collecting tube, arranges intercommunicating pore on inner fin, so that adjacent passage aisle communicates with each other；
Described thermal-collecting tube cross-sectional area is square, and the described foursquare interior length of side is L, and described intercommunicating pore is circle, the radius r of described intercommunicating pore, and the distance between the intercommunicating pore center of circle adjacent on described same fin is l, meets following relation:
l/L*10=a*ln(r/L*10)+b；
Wherein ln is logarithmic function, a, and b is parameter, 1.5 < a < 1.6,2.9 <b < 3.0;
0.34<l/L<0.38;
0.14<r/L<0.17;
30mm<L<120mm；
5mm<r<17mm。
Compared with prior art, present invention have the advantage that:
1) by heat collector surface-coated corrosion resistant material, adding the corrosion resistance of thermal-collecting tube, improve service life.
2) by the change of fluid flow, so that all thermal-arrest tube fluid heating-up temperatures are essentially identical, so that fluid keeps uniformly mixed degree, avoid the loss of heat in fluid mixing, equally possible guarantee thermal-collecting tube temperature keeps identical substantially, reach identical service life, thus extending thermal-collecting tube whole service life.
3) providing the solar thermal collector of a kind of Novel structure, it is ensured that the pressure that the internal maintenance of different thermal-collecting tubes is essentially identical, thus extending thermal-collecting tube whole service life, but also can ensure that the heat exchange area of thermal-collecting tube inner fin, augmentation of heat transfer.
4) changed by the rule of the area of the through hole in thermal-collecting tube, reach Heat-collecting effect and the flow resistance of optimum.
5) present invention passes through test of many times, when ensureing that heat exchange amount is maximum and flow resistance meets requirement, obtains an optimum solar thermal collector optimum results, and has been verified by test, thus demonstrating the accuracy of result.
Accompanying drawing explanation
Fig. 1 is the structural representation of solar thermal collector of the present invention；
Fig. 2 is thermal-collecting tube cross-sectional structure schematic diagram of the present invention；
Fig. 3 is inner fin intercommunicating pore distribution schematic diagram of the present invention；
Fig. 4 is inner fin intercommunicating pore stagger arrangement distribution schematic diagram of the present invention；
Fig. 5 is square dimensions schematic diagram in thermal-collecting tube of the present invention.
Accompanying drawing labelling is as follows:
1 reflecting mirror, 2 thermal-collecting tubes, 3 collecting plates, 4 inner fins, 5 intercommunicating pores, 6 passage aisles.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 illustrates a kind of solar thermal collector, and described heat collector includes thermal-collecting tube 2, reflecting mirror 1 and collecting plate 3, is connected by collecting plate 3 between two adjacent thermal-collecting tubes 2, so that forming tube plate structure between multiple thermal-collecting tube 2 and adjacent collecting plate 3；Described solar energy collector system includes two pieces of tube plate structures, and between described two pieces of tube plate structures, shape is at a certain angle, and described angle direction is relative with the direction of the circular arc line structural bending of reflecting mirror, and the focus D of reflecting mirror 1 is between the angle that tube plate structure is formed.
As an improvement, the cross section of described thermal-collecting tube 2 is rectangle, and described collecting plate 3 connects rectangular angle.
Prior art generally all adopts circular tube structure, but find in practice to adopt circular tube structure, for the spacing of two pipes closer time because the distance between two close circular arcs is only small so that the part that two pipes are adjacent cannot absorb solar energy fully.And the present invention is rhs-structure by arranging thermal-collecting tube cross section, the shortcoming overcoming circular tube structure, make to have between adjacent thermal-collecting tube 2 space more relative to pipe, irradiate from top and bottom reflection, solar energy can be reflected into, thus reaching heat absorption uniformly, from other angle reflections, for pipe, it is also possible to reach to absorb the purpose of more heat.
As preferably, the cross section of described thermal-collecting tube 2 is square.
Traditional heat collector is all be set directly in focus by thermal-collecting tube, once position offsets, then heat would not thermal-arrest in thermal-collecting tube, pass through said structure, sunlight, at reflecting mirror 1, reflexes to tube plate structure by reflecting mirror 1, by the thermal-collecting tube 2 in heat thermal-arrest to tube plate structure.By this structure, even if because install or operation problem cause that tube plate structure position changes, then solar energy still can thermal-arrest in thermal-collecting tube 2, thus avoiding thermal loss；Simultaneously as traditional heat collector is all be set directly in focus by thermal-collecting tube, cause thermal-collecting tube hot-spot, cause thermal-collecting tube local losses excessive, life-span is too short, even cause thermal-collecting tube over-heat inside, produce superheated steam, it is full of whole thermal-collecting tube, causes thermal-collecting tube internal pressure excessive, damage thermal-collecting tube, and take the structure of the application, both heat can be absorbed fully, again can by dispersion relative for heat, it is to avoid heat is excessively concentrated, make overall thermal-collecting tube heat absorption uniformly, extend the service life of thermal-collecting tube.
As one preferably, the focus D of reflecting mirror 1 is positioned on the midpoint of two pieces of tube plate structure least significant end lines.By above-mentioned setting, it is ensured that absorb solar energy to the full extent, it is to avoid solar energy loses because of focal shift, also ensure that platy structure is likely to reduced the irradiation blocked sunlight on reflecting mirror 1 as far as possible simultaneously.Being experimentally confirmed, adopt said structure, the effect of solar absorption is best.
As preferably, described thermal-collecting tube 2 is internal arranges inner fin 4, and described inner fin 4 connects rectangular diagonal angle, as shown in Figure 2.Described inner fin 4 is divided into multiple passage aisle 6 by internal for thermal-collecting tube 2, arranges intercommunicating pore 5, so that adjacent passage aisle 6 communicates with each other on inner fin.
By arranging inner fin 4, it is divided into multiple passage aisle 6, further augmentation of heat transfer by internal for thermal-collecting tube 2, but the pressure of corresponding fluid flowing increases.By arranging intercommunicating pore 5, ensure the connection between adjacent passage aisle 6, so that fluid in the big passage aisle of pressure can to flowing in the little passage aisle of contiguous pressure, solve each problem that small flow channels 27 pressure is uneven and local pressure is excessive of inside of condensation end, thus having promoted the fluid abundant flowing in heat exchanger channels, simultaneously by the setting of intercommunicating pore 5, also reduce the pressure within thermal-collecting tube, improve heat exchange efficiency, also improve the service life of thermal-collecting tube simultaneously.
Preferably, the flow direction of fluid in thermal-collecting tube 2, the area of described intercommunicating pore 5 constantly increases.
Described intercommunicating pore 5 is circular configuration, and the flow direction of fluid in thermal-collecting tube 2, the radius of described circular configuration constantly increases.
Because the flow direction of fluid in thermal-collecting tube 2, fluid in thermal-collecting tube 2 constantly absorbs heat and even evaporates, hence in so that the pressure of thermal-collecting tube constantly increases, and because the existence of intercommunicating pore 5 so that the pressure distribution within thermal-collecting tube 2 is more and more uniform, and therefore the area of intercommunicating pore needs very big, constantly become big by arranging, so that when ensureing inside heat pipe pressure all even pressure, increase heat exchange area by the change of intercommunicating pore area, thus improving heat exchange efficiency.
Preferably, the flow direction of fluid in thermal-collecting tube 2, the amplitude that the area of described intercommunicating pore 5 constantly increases is continuously increased.By such setting, also it is consistent with the Changing Pattern of flowing pressure, reduces while flow resistance further, improve heat exchange efficiency.By such setting, by being test it is found that the heat exchange efficiency of raising about 9%, resistance is held essentially constant simultaneously.
Preferably, the flow direction of fluid in thermal-collecting tube 2, the distributed quantity of intercommunicating pore 5 gets more and more, it is preferred that, the amplitude that described intercommunicating pore quantity 26 constantly increases is continuously increased.
Reduce principle by the Distribution Principle of above-mentioned quantity with area identical, compared with identical with intercommunicating pore quantity, reduce circulation area by distributed number.
Finding in actual experiment, the area of intercommunicating pore 5 can not be too small, and too small words can cause the increase of flow resistance, thus causing weakening of heat exchange, the area of intercommunicating pore 5 can not be excessive, and area is excessive, can cause the minimizing of heat exchange area, thus reducing heat transfer effect.Equally, the cross-sectional area of thermal-collecting tube 2 can not be excessive, and the excessive heat exchanger tube causing being distributed in tube plate structure unit length is very few, again result in heat transfer effect to be deteriorated, thermal-collecting tube flow area can not be too small, and too small meeting causes that flow resistance increases, thus causing that heat transfer effect is deteriorated.Therefore the distance between intercommunicating pore 5 with thermal-collecting tube cross-sectional area and adjacent intercommunicating pore 5 thereof must is fulfilled for certain requirement.
Therefore, the present invention is thousands of the numerical simulations by multiple various sizes of heat collectors and test data, under meeting industrial requirements pressure-bearing situation (below 10MPa), when realizing maximum heat exchange amount, the dimensionally-optimised relation of the best heat collector summed up.
The present invention is thermal-arrest organ pipe 2 cross section is carry out under square dimensionally-optimised.
The described foursquare interior length of side (namely the foursquare outer length of side deducts wall thickness) is L, the radius r of described intercommunicating pore, and the distance between intercommunicating pore adjacent on described same fin is l, meets following relation:
l/L*10=a*ln(r/L*10)+b；
Wherein ln is logarithmic function, a, and b is parameter, 1.5 < a < 1.6,2.9 <b < 3.0;
0.34<l/L<0.38;
0.14<r/L<0.17;
30mm<L<120mm；
5mm<r<17mm。
Wherein, l is equal to the distance between adjacent intercommunicating pore 5 center of circle.Distance between the intercommunicating pore center of circle that left and right as shown in Figure 3,4 is adjacent and neighbouring.
It is preferred that, 15mm < l < 45mm.
Preferably, along with the increase of r/L, described a, b increases.
As preferably, a=1.57, b=2.93.
As preferably, l and the r of same thermal-collecting tube selects average l and r.
As preferably, as shown in Figure 3,4, each inner fin arranging multiple rows of intercommunicating pore 5, as shown in Figure 4, the plurality of intercommunicating pore 5 is staggered arrangement structure.Connect structure by staggered arrangement, it is possible to improve heat exchange further, reduce pressure.
As preferably, the diameter of the intercommunicating pore 5 in different thermal-collecting tube 2 inner fins 4 differs.Along two pieces of tube plate structure junction points (i.e. extreme higher position) to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend, the diameter of the intercommunicating pore 5 of different thermal-collecting tubes 2 is increasing.Finding in an experiment, extending from middle part to both sides, caloric receptivity gradually rises, it is because the stop of tube plate structure by analyzing main cause, causes that middle part is heated minimum, and extend from middle part to both sides, absorption heat gradually rises, thus causing that the pressure of fluid flow inside is increasing.Big by the constantly change of the diameter of intercommunicating pore 5, so that the intercommunicating pore gross area constantly becomes big, the diameter of intercommunicating pore can be arranged according to the internal pressure of diverse location thermal-collecting tube 2 to alleviate pressure and constantly change, can ensure that the pressure that the internal maintenance of different thermal-collecting tube is essentially identical so on the one hand, thus extending thermal-collecting tube whole service life, but also can ensure that the heat exchange area of thermal-collecting tube inner fin, augmentation of heat transfer.
As preferably, along two pieces of tube plate structure junction points (i.e. extreme higher position) to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend, the amplitude that the diameter of the intercommunicating pore 5 of different thermal-collecting tubes 2 is increasing constantly increases.
Find in an experiment, for caloric receptivity, amplification on along from the middle part (i.e. extreme higher position) of tube plate structure to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend is successively decreased gradually, therefore intercommunicating pore area has been done such change, to meet corresponding requirement.
As preferably, the ratio of maximum intercommunicating pore area and minimum intercommunicating pore area is less than 1.27.
As preferably, the intercommunicating pore quantity in each thermal-collecting tube is identical.
As preferably, in same thermal-collecting tube, each intercommunicating pore area is identical.
For preferably, the spacing between intercommunicating pore 5 in different thermal-collecting tube 2 inner fins 4 differs.Along two pieces of tube plate structure junction points (i.e. extreme higher position) to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend, the spacing between the intercommunicating pore 5 of different thermal-collecting tubes 2 is more and more less.Finding in an experiment, extending from middle part to both sides, caloric receptivity gradually rises, it is because the stop of tube plate structure by analyzing main cause, causes that middle part is heated minimum, and extend from middle part to both sides, absorption heat gradually rises, thus causing that the pressure of fluid flow inside is increasing.By constantly diminishing of the spacing between intercommunicating pore 5, so that the intercommunicating pore gross area constantly becomes big, the diameter of intercommunicating pore can be arranged according to the internal pressure of diverse location thermal-collecting tube 2 to alleviate pressure and constantly change, can ensure that the pressure that the internal maintenance of different thermal-collecting tube is essentially identical so on the one hand, thus extending thermal-collecting tube whole service life, but also can ensure that the heat exchange area of thermal-collecting tube inner fin, augmentation of heat transfer.
As preferably, along two pieces of tube plate structure junction points (i.e. extreme higher position) to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend, the amplitude that between the intercommunicating pore 5 of different thermal-collecting tubes 2, spacing is increasingly less constantly increases.
Find in an experiment, for caloric receptivity, amplification on along from the middle part (i.e. extreme higher position) of tube plate structure to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend is successively decreased gradually, therefore the spacing between intercommunicating pore has been done such change, to meet corresponding requirement.
As preferably, the intercommunicating pore diameter in all thermal-collecting tubes is identical.
As preferably, the angle between two tube plate structures is less than 150 degree.
As preferably, the intercommunicating pore spacing in same thermal-collecting tube is all identical.
As preferably, the fluid flow in different thermal-collecting tubes is different.Along two pieces of tube plate structure junction points (i.e. extreme higher position) to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend, the fluid flow in different thermal-collecting tubes 2 is increasing.Finding in an experiment, extending from middle part to both sides, caloric receptivity gradually rises.By the change of fluid flow, so that all thermal-arrest tube fluid heating-up temperatures are essentially identical, so that fluid keeps uniformly mixed degree, avoid the loss of heat in fluid mixing, equally possible guarantee thermal-collecting tube temperature keeps identical substantially, reach identical service life, thus extending thermal-collecting tube whole service life.
As preferably, along two pieces of tube plate structure junction points (i.e. extreme higher position) to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend, the amplitude that the fluid flow of different thermal-collecting tubes 2 is increasing constantly becomes big.
Find in an experiment, for caloric receptivity, amplification on along from the middle part (i.e. extreme higher position) of tube plate structure to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend is successively decreased gradually, therefore thermal-collecting tube flow has been done such change, to meet corresponding requirement.
As preferably, in the pipe of different thermal-collecting tubes, cross-sectional area is different.Along two pieces of tube plate structure junction points (i.e. extreme higher position) to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend, in the pipe of thermal-collecting tube 2, cross-sectional area is increasing.Finding in an experiment, extending from middle part to both sides, caloric receptivity gradually rises.By the change of fluid flow, so that all thermal-arrest tube fluid heating-up temperatures are essentially identical, so that fluid keeps uniformly mixed degree, avoid the loss of heat in fluid mixing, equally possible guarantee thermal-collecting tube temperature keeps identical substantially, reach identical service life, thus extending thermal-collecting tube whole service life.
As preferably, along two pieces of tube plate structure junction points (i.e. extreme higher position) to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend, the amplitude that in the pipe of thermal-collecting tube 2, cross-sectional area is increasing constantly becomes big.
Described thermal-collecting tube cross-sectional area is square.
The foursquare interior length of side (namely the foursquare outer length of side deducts wall thickness) is L, increasing along two pieces of tube plate structure junction points (i.e. extreme higher position) to L on both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend.
As preferably, along two pieces of tube plate structure junction points (i.e. extreme higher position) to both sides extreme lower position (i.e. Fig. 2 thermal-collecting tube A to B, C direction) bearing of trend, the amplitude increasing for L of thermal-collecting tube 2 constantly becomes big.
As preferably, the material of thermal-collecting tube 2 and collecting plate 3 is albronze, the mass percent of the component of described albronze is as follows: 3.7%Cr, 3.3%Ag, 2.2%Mn, 1.25%Zr, 1.23%Ce, 1.25%Ti, 2.46%Si, all the other are Cu, Al, and the ratio of Cu, Al is (8.53-10.23): 1.12.
The manufacture method of albronze is: adopt vacuum metallurgy melting, and argon for protecting pouring becomes circle base, through 820 DEG C of Homogenization Treatments, at 640 DEG C, adopts and is hot extruded into bar, then then through after 565 DEG C of solution hardening, carry out artificial aging process at 230 DEG C.
After tested, above-mentioned alloy has significantly high heat conductivity, and heat conductivity is more than 250W/ (m*k).
By increasing the ratio of copper in albronze, it is greatly increased the heat resistance of alloy, also carries heavy alloyed anti-corrosion property energy simultaneously.
As preferably, described thermal-collecting tube 2 and the external coated anticorrosive coat of collecting plate 3.
As preferably, described anticorrosive coat is to be generated by anticorrosive paint, and anticorrosive paint is become to be grouped into by following: zinc flake 8.3%, and aluminium oxide is 8%, boric acid is 7.3%, and acrylic acid is 0.7%, and wetting dispersing agent is 0.4%, thickening agent is 0.15%, and defoamer is 0.23%, the water of surplus.
A kind of method preparing above-mentioned water-based anticorrosive paint, the method is implemented according to following steps,
A, by coating gross mass percentage ratio, weigh respectively a certain amount of water, 0.4% wetting dispersing agent and 0.23% defoamer, then admixed together, it is sufficiently stirred for so as to dissolve and make coating mixed liquor A 1, in mixed liquor A 1, add the flake metal powder of account for coating gross mass 8.3% again, stir and make coating mixed liquor A 2；
B, by coating gross mass percentage ratio, weigh 7.3% boric acid, form mixed liquor, join the water of 20%～40% fully dissolves and make mineral acid mixed liquid B 1, then in mixed liquid B 1, add the oxidate powder of 8%, stirring makes mineral acid mixed liquid B 2 to without precipitation；
C, by coating gross mass percentage ratio, weigh the acrylic acid of 0.7%, join in the water of 5%～15%, stir and make reducing agent mixed liquor C；
D, by coating gross mass percentage ratio, weigh the thickening agent hydroxyethyl cellulose of 0.15%, join in the water of 2.5%～15%, stirring to dissolve be translucent shape and without gel occur namely stop stirring making thickening agent mixed liquor D；
E, the mineral acid mixed liquid B 2 of preparation is joined in coating mixed liquor A 2, it is subsequently adding the 1/5～1/2 of reducing agent mixed liquor C amount of preparation, add thickening agent mixed liquor D while stirring, add the water of surplus, continue stirring 30～90 minutes, until coating mixed liquor uniformity soilless sticking granule, finally add remaining reducing agent mixed liquor C, it is stirred for 10～40 minutes, to obtain final product.
This kind of coating is applied over finned tube surface by spraying, brushing, dip-coating, dries 10～60 minutes for 80 ± 10 DEG C, and 280 ± 40 DEG C solidify sintering 30～60 minutes, form good anti-corrosion coating.
Described wetting dispersing agent is the SA-20 in peregal series, and described thickening agent selects hydroxyethyl cellulose；Tributyl phosphate selected by described defoamer.
Although the present invention discloses as above with preferred embodiment, but the present invention is not limited to this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (5)
1. a solar thermal collector, including thermal-collecting tube, reflecting mirror and collecting plate, is connected by collecting plate between two adjacent thermal-collecting tubes, so that forming tube plate structure between multiple thermal-collecting tube and adjacent collecting plate；Described solar energy collector system includes two pieces of tube plate structures, between described two pieces of tube plate structures, shape is at a certain angle, described angle direction is relative with the direction of the circular arc line structural bending of reflecting mirror, the focus of reflecting mirror is between the angle that tube plate structure is formed, the cross section of described thermal-collecting tube is rectangle, and described collecting plate connects rectangular angle；
It is characterized in that, described thermal-collecting tube and collecting plate outer surface apply anticorrosive coat.
2. solar thermal collector as claimed in claim 1, described anticorrosive coat is anticorrosive paint.
3. solar thermal collector as claimed in claim 2, anticorrosive paint is become to be grouped into by following: zinc flake 8.3%, and aluminium oxide is 8%, boric acid is 7.3%, and acrylic acid is 0.7%, and wetting dispersing agent is 0.4%, thickening agent is 0.15%, and defoamer is 0.23%, the water of surplus；
This kind of coating is applied over finned tube surface by spraying, brushing, dip-coating, dries 10～60 minutes for 80 ± 10 DEG C, and 280 ± 40 DEG C solidify sintering 30～60 minutes, form good anti-corrosion coating.
4. solar thermal collector as claimed in claim 3, described wetting dispersing agent is the SA-20 in peregal series, and described thickening agent selects hydroxyethyl cellulose；Tributyl phosphate selected by described defoamer.
5. solar thermal collector as claimed in claim 1, arranging inner fin inside described thermal-collecting tube, described inner fin connects rectangular diagonal angle, and described inner fin will be divided into multiple passage aisle inside thermal-collecting tube, inner fin arranges intercommunicating pore, so that adjacent passage aisle communicates with each other；
Described thermal-collecting tube cross-sectional area is square, and the described foursquare interior length of side is L, and described intercommunicating pore is circle, the radius r of described intercommunicating pore, and the distance between the intercommunicating pore center of circle adjacent on described same fin is l, meets following relation:
l/L*10=a*ln(r/L*10)+b；
Wherein ln is logarithmic function, a, and b is parameter, 1.5 < a < 1.6,2.9 <b < 3.0;
0.34<l/L<0.38;
0.14<r/L<0.17;
30mm<L<120mm；
5mm<r<17mm。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345454A (en) * | 2018-07-05 | 2019-10-18 | 青岛宝润科技有限公司 | A kind of solar steam generator of square header heat pipe structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2740960Y (en) * | 2004-10-29 | 2005-11-16 | 崔锦纲 | Modular solar heat collector |
| CN103499150A (en) * | 2013-10-22 | 2014-01-08 | 赵炜 | Solar water heater system |
| CN103528217A (en) * | 2013-10-22 | 2014-01-22 | 山东大学 | Loop heat pipe type solar water heater system |
| CN104089409A (en) * | 2013-12-05 | 2014-10-08 | 中北大学 | Solar heat collector system with intelligent-control-ignition heating function |
| CN104633960A (en) * | 2015-03-09 | 2015-05-20 | 中国石油大学(华东) | Loop heat pipe solar system with fins of different heights in heat collection pipes |
-
2016
- 2016-03-15 CN CN201610144555.2A patent/CN105737404B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2740960Y (en) * | 2004-10-29 | 2005-11-16 | 崔锦纲 | Modular solar heat collector |
| CN103499150A (en) * | 2013-10-22 | 2014-01-08 | 赵炜 | Solar water heater system |
| CN103528217A (en) * | 2013-10-22 | 2014-01-22 | 山东大学 | Loop heat pipe type solar water heater system |
| CN104089409A (en) * | 2013-12-05 | 2014-10-08 | 中北大学 | Solar heat collector system with intelligent-control-ignition heating function |
| CN104633960A (en) * | 2015-03-09 | 2015-05-20 | 中国石油大学(华东) | Loop heat pipe solar system with fins of different heights in heat collection pipes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345454A (en) * | 2018-07-05 | 2019-10-18 | 青岛宝润科技有限公司 | A kind of solar steam generator of square header heat pipe structure |
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