CN103574938A - Heating medium superconductive tube plate integrated collector plate core and manufacturing method thereof - Google Patents
Heating medium superconductive tube plate integrated collector plate core and manufacturing method thereof Download PDFInfo
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- CN103574938A CN103574938A CN201210254983.2A CN201210254983A CN103574938A CN 103574938 A CN103574938 A CN 103574938A CN 201210254983 A CN201210254983 A CN 201210254983A CN 103574938 A CN103574938 A CN 103574938A
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- 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
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- 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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Abstract
The invention belongs to the field of solar collector plate cores and particularly relates to a novel collector plate core with heating mediums as heat conducting mediums. A heating medium superconductive tube plate integrated collector plate core is characterized in that the plate core is a flat plate with through holes; more than one heat conducting tube with the heating mediums, which are integrated with the plate into a whole and arranged in parallel, are mounted under the surface of the plate core, both ends of every heat conducting tube are sealed; at least the surface of the flat portion of the plate core is coated with solar heat absorption coatings. The novel flat-type solar collector plate core, by taking the heating mediums as the heat conducting mediums, skillfully solves the technical problem that flat-type solar collectors cannot bear low temperature and meanwhile greatly improves the heat efficiency of flat-type solar water heaters.
Description
Technical field
The invention belongs to plate core of solar heat-collecting field, relate in particular to a kind of heating agent that adopts as the novel heat collector plate core of heat transfer medium.
Background technology
Solar water heater refers to usings the water heater that solar energy heats as the energy.One of three large water heaters mutually arranged side by side with gas heater, electric heater.Solar water heater is converted into heat energy solar energy, and water is heated to high-temperature from low temperature, to meet the hot water of people in life, production, uses.Solar water heater is divided into vacuum pipe solar water heater and flat solar water heater by version, and vacuum pipe solar water heater is main at present, occupies domestic 95% the market share.Vacuum pipe solar water heater is comprised of related accessories such as thermal-collecting tube, storage tank and supports, and solar energy energy transform into heat energy is mainly relied on to thermal-collecting tube.The principle that thermal-collecting tube utilizes hot water floating cold water to sink, makes water generates microcirculation and reaches required hot water.Vacuum tubular glass solar collector can be subdivided into all-glass vacuum tube type, heat-tube vacuum tubular type, U-shaped pipe vacuum tube formula.Conventional is all-glass vacuum tube type, its advantage: safety, energy-saving and environmental protection, economy.Especially with the solar water heater of auxiliary electrical heating function, it take solar energy as main, and electric energy is that auxiliary energy utilization patterns make solar water heater normally operation in all weather of the year, and when environment temperature is low, efficiency is still higher.Its shortcoming is that volume ratio is huger, glass tube is frangible, easily assemble incrustation scale in pipe, can not bearing operation.But a kind of hot pipe type vacuum heat collecting glass tube that Tsing-Hua University's sunlight works out, it is to take heat-conducting medium to carry out thermal energy transfer as heat conduction matchmaker, it has just fully solved, and glass tube is frangible, easily assemble in pipe in incrustation scale, pipe, freeze etc. many unfavorable factors and its Heat-collecting effect also higher than other thermal-collecting tube.Flat solar water heater can be divided into tube-sheet type, wing pipe type, coil pipe type, flat box type, circular pipe type and heat pipe-type.Its advantage: there is good integrity, the life-span is long, fault is few, potential safety hazard is low, can bearing operation, the advantage such as safe and reliable, absorber area is large, is easy to combine with building, and resistance to anhydrous air drying is strong, its hot property is also very stable.Its shortcoming is owing to being antivacuum in cover plate, and heat-insulating property is poor, therefore solar collecting performance is poor when environment temperature is lower, and relative power consumption while adopting auxiliary heating.Environment temperature low or while requiring leaving water temperature high the thermal efficiency lower.As freezing, need to change whole collecting plate, applicable winter, non-icing southern area was selected.From content above, can find out, the two respectively has pluses and minuses solar vacuum-tube water heater and flat solar water heater.And flat solar water heater's major defect is exactly not low temperature resistant environment and the thermal efficiency, be slightly poorer than Vacuum Heat hydrophone, but the advantage of flat water heater is vacuum pipe solar water heater too, cannot possess.Flat solar water heater can not tolerate the problem of low temperature, and long-term existence, in solar water heater industry, never has so far any technical scheme and solves this industry difficult problem.
Summary of the invention
The object of this invention is to provide a kind of novel flat solar water heater's plate core, this plate core is by adopting heating agent as heat conduction medium, solved cleverly the technical barrier that flat solar water heater cannot tolerate low temperature, also made flat solar water heater's the thermal efficiency be greatly improved simultaneously.
Technical scheme of the present invention is achieved in that a kind of heating agent superconduction tube sheet one collector plate core, it is characterized in that: described plate core is a flat board with through hole, and planar surface below is provided with one or more that combine together and be parallel to each other with this flat board the heat pipe of heating agent is housed, this heat pipe is sealed at both ends, and at least the plated surface of tabular part is shaped with solar energy heat absorbing coating.
Described tabular plate wicking surface is also provided with the parallel fins in serrated crosssection or wavy cross section.
An other side of described plate core and through hole below are plane.
In described heat pipe, be provided with the heat radiation fin parallel with axis.
Described heat pipe cross sectional shape is square, circular, oval, triangle, trapezoidal, rhombus and irregularly shaped.
Described heat pipe can be arranged in overall structure, also can be spaced in intervals arrangement.
Described heat absorbing coating is composite solar heat absorbing coating.
Described heating agent is ethylene glycol, freon, methyl alcohol, acetone and water.
A processing method for heating agent superconduction tube sheet one collector plate core, mainly comprises following technology contents: described collector plate core comprises following procedure of processing,
A, first adopt aluminium section bar technique to stretch to produce collector plate core section bar;
B, above-mentioned collector plate core is intercepted after unified length standby as required;
C, above-mentioned collector plate core section bar one end equal in length is adopted to powerful pressing sealing technique pressing sealing;
D, use needle-like heating agent add injection device and add doses heating agent in each heat pipes;
E, the other one end of collector plate core is adopted to powerful pressing sealing technique pressing sealing, complete above-mentioned collector plate core and make.
Described heating agent addition is 55% to 85% of heat pipe internal volume.
By adopting above-mentioned technical solution, the present invention has obtained positive technique effect and a little: the present invention is by adopting simple aluminium section bar processing technology for the making of solar panels core, significantly reduce the cost of manufacturing of plate core, thereby provide necessary price advantage for the popularization of plate-type solar; The utility model is made collector plate core by adopting integrative-structure to stretch in addition, really realized the integrated of collecting plate and heat pipe structure, the low problem of heat conduction efficiency of thoroughly having avoided original composite board type to cause due to the pressing gap certainly existing, by adopting the plate core of this integrative-structure, that the heat conduction efficiency of common aluminum board core approaches and even surpasses the compound collector plate core of copper copper, reached and guaranteed under the prerequisite of heat conduction efficiency, significantly reduce production cost, improved production efficiency.For this conduction efficiency problem, the present invention has also adopted the structure that fin is set at heat pipe inwall, and the contact area of increase and heating agent, further improves heat exchanger effectiveness; By adopting, heat pipe is sealed and adds heating agent as the mode of conductive medium, changed the mode that former reliable metal heat-conducting carries out heat exchange, utilize the gasification of heating agent to conduct to the endless form of liquefaction, speed and the efficiency of heat exchange have not only greatly been improved, also effectively avoided the temperature on plate core of solar heat-collecting surface simultaneously, prevent the aging of plate core of solar heat-collecting composite coating, improved significantly the service life of plate core coating; To improve be due to the conventional panels core conduction pattern that needs to walk recirculated water directly to heat in having adopted original heat pipe for key technology in the present invention in addition, but adopt, take heating agent and directly main heat exchange pipe is carried out to heat exchange as intermediary.Because past heat pipe size is more tiny, therefore when north cold area is used, Low Night Temperature is that the water in above-mentioned heat pipe is very fast at reverse heat exchanging process, causes the north cannot use an industry difficult problem for plate-type solar water heater.Because by adopting the heating agent conduction pattern in the present invention, belong to unidirectional heat exchange endless form, under low-temperature cold weather, heating agent is all the time in liquid state, can as the process of heating, not realize gaseous state to liquid heat exchange conduction pattern, in addition heating agent adopts low temperature resistant material, the ability with tolerance subzero Baidu low temperature, so the present invention has thoroughly solved plate-type solar and cannot use the problem of popularization in the north.
Accompanying drawing explanation
Fig. 1 is plate core schematic cross-section of the present invention;
Fig. 2 is that surface is with the plate core schematic cross-section of fin;
Fig. 3 is that heat pipe is with the plate core schematic cross-section of heat radiation fin;
Fig. 4-7 are the plate core schematic cross-section of other several structures;
Fig. 8-16 are heat pipe cross sectional shape schematic diagram of the present invention;
Figure 17 is the structural upright schematic diagram of plate core of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
The present invention is mainly the technological improvement for existing plate-type solar thermal collector plate core, this technology can solve existing plate core of solar heat-collecting complex manufacturing, heat conduction and the low problem of heat exchanger effectiveness, has thoroughly solved the key technology difficult problem that plate-type solar plate core cannot tolerate low temperature environment simultaneously.As shown in Figure 1, concrete technological improvement relates to a kind of heating agent superconduction tube sheet one collector plate core, mainly be improved to: described plate core 2 is a flat board with through hole, and planar surface below is provided with one or more that combine together and be parallel to each other with this flat board the heat pipe 21 of heating agent is housed, this heat pipe is sealed at both ends, the general mode of pressing that adopts of heat pipe 21 realizes sealing, can certainly adopt welding, welding, and the sealing that plug etc. mode realizes heat pipe 21 is installed.The plated surface of the tabular part on plate core 2 is shaped with solar energy heat absorbing coating.Coating is selected the composite solar heat absorbing coating that comprehensive comparison is good naturally.The tabular part of above-mentioned collector plate wicking surface is mainly as the heat absorption surface of solar panels core, on it, be coated with solar energy heat absorbing coating, and this tabular part also can need to adopt the structures such as waveform or zigzag parallel fins according to what use, further increase to the endotherm area of sunlight and with the irradiating angle of the sun.
The cross sectional shape of this plate core, as shown in Fig. 4-7, can be plate shaped, notch cuttype, rhombus etc.But generally described plate core 2 is flat plate wicking surface, and plate core 2 surfaces are arranged with one or more that combine together and be parallel to each other with this flat board the heat pipe 21 of heating agent are housed, these heat pipe 21 two ends pressing sealings, and at least the plated surface of tabular part is shaped with solar energy heat absorbing coating.Plate core 2 is actually that processes by similar aluminium alloy extrusions forms.Consider processing cost and process issues, preferably use aluminium to make plate core pattern material, then intercepted into standard size, after filling heating agent, by two ends pressing sealing, produce independently modular board core 2.
In addition in order further to improve self intensity of plate core 2, below the other side of described plate core 2 and through hole, be plane.Adopt the collector plate core of this spline structure, be similar to the collector plate core of honeycomb structure, can improve self intensity of plate core, simultaneously because two surface be all the surface of comparison rule, can make to install fix convenient.
As shown in Figure 1, this plate core 2 is made for metal material, is the tabular shape that a centre is provided with sealing hole, and the hole of sealing is to be filled with heating agent in heat pipe 21.As shown in Figure 2, described tabular plate core 2 surfaces are also provided with the parallel fins 23 in serrated crosssection or wavy cross section.These above-mentioned parallel fins 23 are set, and are mainly two effects, and the area of the increase plate core 2 that one can be suitable improves the absorbability to solar energy; It two be exactly to utilize fin 23 surfaces is arranged to certain angle of inclination, changes the angle of inclination between plate wicking surface and sunshine.For the ease of being coated with solar energy heat absorbing rete.Generally, above-mentioned plate core 2 at least has the surface of a flat shape, and the plane mentioned here refers to have rule and even curface relatively, the smooth surface even curface of absolutely not conventionally understanding.For example: surface has and is parallel to each other and the surface of regular fin is similarly the flat surface of mentioning in the present invention.In addition for coordinate with heat-exchange tube 1 between tight connection, make between said two devices, to carry out good heat conduction, two sides of described plate core 2 are plane.Because such finished surface is more prone to fit tightly.On the surface of plate core 2, be coated with heat absorption rete, described heat absorbing coating is composite solar heat absorbing coating.When Surface absorption is after solar energy, need to conduct and pass to the heating agent being arranged in plate core heat pipe 21 by heat, described heating agent is ethylene glycol, also can use other heating agent materials.As shown in Figure 3, in order to improve the contact area of heating agent and plate core 2, improve the thermal efficiency.In described heat pipe 21, be provided with the heat radiation fin 22 parallel with axis.By adopting such structure, can improve significantly rate of heat exchange and efficiency between heating agent and plate core 2.As shown in Fig. 8-16, from description above, plate core 2 of the present invention is made by shape processing technology, therefore the heat pipe 21 on plate core can be made into various different cross section shapes easily, and heat pipe 21 cross sectional shapes are square, circular, oval, triangle, trapezoidal, rhombus and irregularly shaped.These different heat pipe cross sectional shapes may be used to make plate core 2.Manufacture craft due to the present invention's employing, aluminium section bar stretching manufacture craft for existing maturation, make the heat pipe cross section that no matter makes any shape all without any manufacture difficulty, therefore described heat pipe 21 cross sectional shapes are not limited to the shapes such as square, circular, oval, triangle, trapezoidal, rhombus, even can be according to use need to produce 8 fonts, hexagon and other erose heat pipe cross sections.And the layout of heat pipe 21 is also very flexible, described heat pipe can be arranged in overall structure, and namely each heat pipe is all closely adjacent, is similar to the cross sectional shape of Tian shape grille note, also can be spaced in intervals arrangement mode and arrange heat pipe.Concrete arrangement can be flexibly according to and design and need to change.
Described heat pipe 21 can be arranged in overall structure, also can be spaced in intervals arrangement.As shown in Figure 2, the overall structure that is arranged in of mentioning here refers to that 21 1 of heat pipes are close to arrange 21, two adjacent heat pipes of heat pipe 21 of another one and use a shared sidewall, and a row heat pipe gathers at plate core 2 middle parts of this structure.As shown in Figure 3, certain arranged with interval is set, refers between each heat pipe 21 and keep at a certain distance away, there is independently heat pipe sidewall.Heat pipe 21 at least has one on each plate core 2, in order to improve whole intensity, the general structure that all adopts a plurality of heat pipes 21, can avoid like this because some heat pipes 21 leak the problem that causes collector plate core global failure, also can improve significantly the mechanical strength of plate core 2 simultaneously, while becoming gaseous state while preventing heating agent work, the bulging problem that makes heat pipe 21 rise and cause due to internal pressure.
The feature of considering the processing of plate core, plate core described in the present invention is generally elongated section bar, if when need to make solar thermal collector, can use the modular board core of a plurality of standards, arranges and is overlapped to form an integrally-built solar thermal collector.As shown in figure 17, be the solar thermal collector that uses plate core of the present invention to make, comprise heat collector shell and the transparent cover plate that is arranged on this shell upper, in this shell, be provided with heat collector body.This heat collector consists of heat-exchange tube 1 and heating agent superconduction integrated plate core 2 and clamping device 3 that above-mentioned two parts are fixed as one, heat-exchange tube 1 is closely connected with plate core 2 one end and passes through above-mentioned clamping device 3 and fix, heat-exchange tube 1 cross section is incomplete circle, namely by common circular water pipe, squeeze out a planar section for carrying out heat exchange with plate core 2, in order further to improve the heat conductivility between plate core 2 and heat-exchange tube 1, this can smear the modes such as heat conductive silica gel, heat conductive pad between said two devices.
As plate core of solar heat-collecting, its surface must need to be coated with solar energy heat absorbing coating, and described heating agent is ethylene glycol.
The present invention below describes in detail manufacture craft of the present invention:
Described collector plate core comprises following procedure of processing,
A, first adopt aluminium alloy extrusions processing technology to stretch to produce collector plate core section bar; This step is mainly that to produce the section bar of given size standby, and it makes tensile elongation can be more in order to need the integral multiple of intercepted length to make.
B, above-mentioned collector plate core is intercepted after unified length as required standby, this processing step is mainly the needs when using, and the unified collector plate core blank of intercepting size is stand-by.
C, above-mentioned collector plate core section bar one end equal in length is adopted and directly adopts the pressing of pressing sealing technique to seal; This step is mainly filling the doing of later heating agent and produces preparation, namely one section of the plate core pattern material of both ends open is sealed.
D, use needle-like heating agent add injection device and add doses heating agent in each heat pipes; Here be mainly filling low temperature resistant heating agent, and this heating agent also needs to have good liquid state to gaseous state, gaseous state is to liquid circulation conversion performance.Generally can adopt several materials of ethylene glycol, freon, methyl alcohol, acetone and water as heating agent.What need in addition explanation is exactly a bit that addition about heating agent is generally accounting within the scope of the 55%-85% of heat pipe volume, and this adjusting range is mainly to adapt to use different heating agent kinds, and its gaseous state determines to the liquid feature changing.
E, the other one end of collector plate core is adopted to powerful process for pressing pressing sealing, complete above-mentioned collector plate core and make.This last step is the filling heating agent of sealing, adopts the plate core of this filling heating agent, has thoroughly changed the heat exchange method of existing plate-type collector plate core.Traditional plate-type solar need to be by realizing heat exchanging process with the close-connected more tiny heat exchange manifolds of each heat-collecting plate core, and then be injected in thicker main heat exchange pipe and carry out hot water collection.This heat exchange method is reversible, therefore under low temperature environment, can cause equally the water quick freezing in heat exchange arm, causes heat collector to damage.What the present invention adopted is as plate core thermal energy exchange medium by the heating agent in the some heat pipes in each plate core, the heating agent adopting adopts gaseous state to transform mode direct and that main heat exchange pipe carries out heat exchange to liquid circulation, and this heat exchange every be one-way circulation, therefore its conduction efficiency is very low at low temperatures, in addition heating agent has good resistance to low temperature, makes it possess good resistance to low temperature.Therefore need only the water guaranteeing in main heat exchange pipe and circulate in low speed, and coordinate simple insulation processing simultaneously, can realize above-mentioned plate-type solar water heater in the use problem of low temp area.By above-mentioned mode, plate-type solar water heater can be thoroughly solved and this long-standing industry technology difficult problem in low temp area cannot be used.
Described above is only preferred embodiment of the present invention, and above-mentioned specific embodiment is not limitation of the present invention.In technological thought category of the present invention, can there is various distortion and modification, the retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, all belong to the scope that the present invention protects.
Claims (10)
1. a heating agent superconduction tube sheet one collector plate core, it is characterized in that: described plate core is a flat board with through hole, and planar surface below is provided with one or more that combine together and be parallel to each other with this flat board the heat pipe of heating agent is housed, this heat pipe is sealed at both ends, and at least the plated surface of tabular part is shaped with solar energy heat absorbing coating.
2. a kind of heating agent superconduction tube sheet one collector plate core according to claim 1, is characterized in that: described tabular plate wicking surface is also provided with the parallel fins in serrated crosssection or wavy cross section.
3. a kind of heating agent superconduction tube sheet one collector plate core according to claim 1, is characterized in that: an other side of described plate core and through hole below are for plane.
4. a kind of heating agent superconduction tube sheet one collector plate core described in any one according to claim 1 or 4, is characterized in that: in described heat pipe, be provided with the heat radiation fin parallel with axis.
5. a kind of heating agent superconduction tube sheet one collector plate core according to claim 1, is characterized in that: described heat pipe cross sectional shape is square, circular, oval, triangle, trapezoidal, rhombus and irregularly shaped.
6. a kind of heating agent superconduction tube sheet one collector plate core according to claim 1, is characterized in that: described heat pipe can be arranged in overall structure, also can be spaced in intervals arrangement.
7. a kind of heating agent superconduction tube sheet one collector plate core according to claim 1, is characterized in that: described heat absorbing coating is composite solar heat absorbing coating.
8. a kind of heating agent superconduction tube sheet one collector plate core according to claim 1, is characterized in that: described heating agent is ethylene glycol, freon, methyl alcohol, acetone and water.
9. a processing method for a kind of heating agent superconduction tube sheet one collector plate core according to claim 1, is characterized in that: described collector plate core comprises following procedure of processing,
A, first adopt aluminium section bar technique to stretch to produce collector plate core section bar;
B, above-mentioned collector plate core is intercepted after unified length standby as required;
C, above-mentioned collector plate core section bar one end equal in length is adopted to powerful pressing sealing technique pressing sealing;
D, use needle-like heating agent add injection device and add doses heating agent in each heat pipes;
E, the other one end of collector plate core is adopted to powerful pressing sealing technique pressing sealing, complete above-mentioned collector plate core and make.
10. the processing method of a kind of heating agent superconduction tube sheet one collector plate core according to claim 7, is characterized in that: described heating agent addition is 55% to 85% of heat pipe internal volume.
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| CN201210254983.2A CN103574938A (en) | 2012-07-23 | 2012-07-23 | Heating medium superconductive tube plate integrated collector plate core and manufacturing method thereof |
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| CN201210254983.2A CN103574938A (en) | 2012-07-23 | 2012-07-23 | Heating medium superconductive tube plate integrated collector plate core and manufacturing method thereof |
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Application publication date: 20140212 |