CN103712342A - Different-caliber groove type reflector array matched with temperature gradient - Google Patents
Different-caliber groove type reflector array matched with temperature gradient Download PDFInfo
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- CN103712342A CN103712342A CN201310742248.0A CN201310742248A CN103712342A CN 103712342 A CN103712342 A CN 103712342A CN 201310742248 A CN201310742248 A CN 201310742248A CN 103712342 A CN103712342 A CN 103712342A
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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
- 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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Abstract
The invention discloses a different-caliber groove type reflector array matched with the temperature gradient. The different-caliber groove type reflector array comprises a plurality of rows of groove type reflectors which are arranged in parallel, and the groove type reflector in each row comprises a plurality of reflector units which are connected in series. Each reflector unit comprises a heat collecting tube and a reflector body. The heat collecting tubes are communicated in series to form heat collecting tube branch loops, a plurality of rows of heat collecting tube branch loops are communicated in series in a head-and-tail mode to form a heating loop, and the caliber of the opening of each reflector gradually becomes larger in the moving direction of a heat conduction working medium in the heating loop row by row. The heat dissipation temperature gradient and the caliber of the groove type reflector array are matched according to the direct proportion relation between the heat dissipation temperature of the flowing liquid and the heat dissipation and the relation between the caliber of the reflector bodies and the heat absorbing capacity, meanwhile, the requirements for shortening the heating loop of the heat collecting tubes and reducing the heat dissipation are taken into consideration, the scheme that the caliber of the opening of the groove type reflectors gradually becomes larger along the heat conduction working medium is designed row by row, the whole photothermal conversion efficiency is improved, and the cost of the heat collecting tubes is reduced.
Description
Technical field
The present invention relates to a kind of condensing thermal power generation mirror field device, especially a kind of different bore slot type reflection mirror array mating with thermograde.
Background technology
As the solar electrical energy generation industry of the important component part of new forms of energy industry, condensing thermal power generation is the project with very large potentiality and economic technology competitive advantage, and following development prospect is wide.Especially the popularity of slot type light heat generator application is far longer than other various forms.Its advantage is: for the parabolic condenser of focusing sunlight, it is shaped as parabolical Extrude Face, and processing is simple, and manufacturing cost is lower, and consumable quantity is few, and version is simple in addition, easily realizes standardization, is applicable to batch production.
But simultaneously, according to photo-thermal mirror place, put the difference of geographical environment of living in and climatic environment, pair array has different requirements, wherein one of is most importantly: after the area definition of whole mirror field, how by photo-thermal, to be collected heat-conducting medium is heated to maximum temperature and sends.This just requires to weigh heating and is then considered with carrying two factors that are associated of heat radiation, so that heating is most effective, and makes the ratio that dispels the heat minimum simultaneously.The heating function of tracing to its source is mainly derived from speculum, heat sinking function is mainly derived from thermal-collecting tube, further analysis is just not difficult to draw two factors above put forward maximum temperature to critical decisive action, they are respectively the opening bore of speculum and the path thermograde in thermal-collecting tube, opening bore is relevant to heating function, and path thermograde is relevant with heat radiation.Due to the area of Jing Chang is certain and speculum by the array arrangement heating of connecting, and the thermal-collecting tube gateway thermograde of every row speculum is all not identical.How two factors are considered to also overall balance becomes the focus of dealing with problems simultaneously, with regard to thermal-collecting tube, be the parts that run through whole thermal-arrest transfer conduit, the mobile thermosol matter of internal request is even, therefore can not adopt reducing structure and can only unify caliber, with regard to only remaining, consider aperture of a mirror problem so.
Summary of the invention
The problem existing for prior art, the object of the present invention is to provide a kind of simple in structure, different bore slot type reflection mirror array mating with thermograde of being conducive to high-efficiency heating heat-conducting work medium and low heat emission, make the condensing thermal conversion of speculum and the mutual balance coordination of heat radiation process of thermal-collecting tube, thereby improve whole photo-thermal conversion efficiency and efficiency of transmission.
For achieving the above object, the different bore slot type reflection mirror array that the present invention is mated with thermograde, comprise the slot type speculum that some row are arranged mutually parallel, each row slot type speculum comprises the mirror unit that several are connected mutually, mirror unit comprises thermal-collecting tube and speculum, several thermal-collecting tubes are mutually connected to be communicated with and are formed thermal-collecting tube minute loop, connect from beginning to end and be communicated with for heating circuit in some row thermal-collecting tubes minute loop, according to heat-conducting work medium traffic direction in heating circuit, the opening bore of described speculum increases by column gradually.
Further, the opening bore of the described speculum in same row is identical.
Further, described mirror unit also comprises thermal-arrest support and mirror support, and thermal-arrest support and speculum are arranged on mirror support, and thermal-collecting tube is arranged on thermal-arrest support.
Further, between the interior adjacent described mirror support of every row, be mutually permanently connected.
Further, between the interior adjacent described thermal-collecting tube of every row, series connection is communicated with the described thermal-collecting tube of formation and divides loop mutually, and heat-conducting work medium is flowed into by a described thermal-collecting tube minute one end, loop, and joins along pipe string the other end that direction flows to described thermal-collecting tube minute loop.
Further, in the described slot type speculum of some row, one end that one heat-conducting work medium of classifying described heating circuit as of the described speculum of lowest calibre flows into is set, one end that a heat-conducting work medium of classifying described heating circuit as of the described speculum of maximum caliber flows out is set.
Further, the setting that matches of the columns setting of described slot type speculum and described heating circuit, the difference between its corresponding total radiating and cooling of heat temperature raising sum of every row is maximum.
The different bore slot type reflection mirror array that the present invention is mated with thermograde, according to the relation of the proportional relationship of the exothermic temperature of working fluid and heat radiation, speculum bore and caloric receptivity, carry out mating of exothermic temperature gradient and slot type reflection mirror array caliber size, consider that thermal-collecting tube heating circuit shortens the requirement that reduces heat radiation simultaneously, the arrangement mode scheme that the opening bore of design slot type speculum increases by column gradually along heat-conducting work medium traffic direction, thus improve whole photo-thermal conversion efficiency and lower thermal-collecting tube cost.
Accompanying drawing explanation
Fig. 1 is the every row mirror unit of apparatus of the present invention syndeton schematic diagram each other;
Fig. 2 is the structural representation of arranging between the reflection mirror array of three row.
The specific embodiment
Below, with reference to accompanying drawing, the present invention is more fully illustrated, shown in the drawings of exemplary embodiment of the present invention.Yet the present invention can be presented as multiple multi-form, and should not be construed as the exemplary embodiment that is confined to narrate here.But, these embodiment are provided, thereby make the present invention comprehensively with complete, and scope of the present invention is fully conveyed to those of ordinary skill in the art.
For ease of explanation, here can use such as " on ", the space relative terms such as D score " left side " " right side ", the relation for element shown in key diagram or feature with respect to another element or feature.It should be understood that except the orientation shown in figure, spatial terminology is intended to comprise the different azimuth of device in using or operating.For example, if the device in figure is squeezed, be stated as the element that is positioned at other elements or feature D score will be positioned at other elements or feature " on ".Therefore, exemplary term D score can comprise upper and lower orientation both.Device can otherwise be located (90-degree rotation or be positioned at other orientation), and the relative explanation in space used here can correspondingly be explained.
Operation principle of the present invention: the heat-conducting work medium of liquid directed constant speed in heating circuit flows and is heated and produces natural heat dissipation, finally flows out heating circuit with uniform temperature.Under the long-pending certain condition of mirror scene, the bore of every row is proportional to heating intensity, and is inversely proportional to heating circuit length, and heat-conducting work medium temperature is directly proportional to heat radiation.Total caloric receptivity Q and every row recept the caloric C, bore A, bore thermal-arrest rate constant K, columns N, mean temperature T, with temperature rate of heat dissipation constant B, there is following relation:
Q=CN-BT; C=AK, i.e. Q=AKN-BTN=N(AK-BT);
Wherein, K, B are approximate constant, and A, T and N are inversely proportional to.When N increases, A, T reduce, and get N(AK-BT in the domain of definition) maximum be heat absorption efficiency peak.
In the present invention, for the opening bore of speculum and the path temperature gradient relation in thermal-collecting tube, the relation of opening bore and heating function, and the relation of path thermograde and heat radiation, be provided with the version of slot type reflection mirror array bore graded.According to the relation of the proportional relationship of the exothermic temperature of working fluid and heat radiation, speculum bore and caloric receptivity, carry out mating of exothermic temperature gradient and slot type reflection mirror array caliber size, consider that thermal-collecting tube heating circuit shortens the requirement that reduces heat radiation simultaneously, the arrangement mode scheme that the opening bore of design slot type speculum increases by column gradually along heat-conducting work medium traffic direction, thus improve whole photo-thermal conversion efficiency and lower thermal-collecting tube cost.Wherein, small-bore one end is set to one end that in the total loop of thermal-collecting tube, heat-conducting work medium flows into, and setting is mated in the columns setting of slot type speculum with heating circuit, and the difference between its corresponding total radiating and cooling of heat temperature raising sum of every row is maximum.
As shown in Figure 1, a kind of different bore slot type reflection mirror array mating with thermograde of the present invention, be set up on ground 5, comprise the slot type speculum that some row are arranged mutually parallel, speculum opening bore in some row slot type speculums increases by column gradually along heat-conducting work medium traffic direction, and each row slot type speculum comprises the mirror unit 9 of some mutual series connection.
As shown in Figure 2, the reflection mirror array of three row of take is example, and the position relationship of all parts as shown in the figure, comprises first row slot type speculum 10, secondary series slot type speculum 20 and the 3rd row slot type speculum 30.Wherein, first row slot type speculum 10 comprises the first thermal-collecting tube minute loop 11, the first speculum 12, first mirror support 13, the first thermal-arrest support 14.Secondary series slot type speculum 20 comprises the second thermal-collecting tube minute loop 21, the second speculum 22, the second mirror support 23, the second thermal-arrest support 24.The 3rd row slot type speculum 30 comprises the 3rd thermal-collecting tube minute loop 31, the 3rd speculum 32, the 3rd mirror support 33, the 3rd thermal-arrest support 34.Between each row, connect from beginning to end through its jockey in thermal-collecting tube minute loop separately again, and to be communicated be a total loop,, be about to the first thermal-collecting tube minute loop 11, the second thermal-collecting tube minute loop 21 and the 3rd thermal-collecting tube and divide loop 31 series connection to be communicated with for heating circuit 15.
As shown in Figure 2, the opening bore of the first speculum 12 in first row slot type speculum 10 is less than the opening bore of the second speculum 22 in secondary series slot type speculum 20, the opening bore of the second speculum 22 in secondary series slot type speculum 20 is less than the opening bore of the 3rd speculum 32 in the 3rd row slot type speculum 30, and its opening bore increases by column gradually along the traffic direction of heat-conducting work medium in heating circuit 15.Wherein one end of small-bore the first speculum 12 is set to one end that in the heating circuit 15 of thermal-collecting tube, heat-conducting work medium flows into.
During work, first sunshine is reflected mirror and converges at thermal-collecting tube and the heat-conducting work medium of its internal flow is heated, this heating is successive in whole heating circuit, from the beginning working medium flow to tail and also produce cooling effect simultaneously simultaneously, while finally flowing out heating circuit, temperature is promoted to design load, transfers to subsequently thermal electric generator utilization.In the present invention, solve aperture of a mirror Changing Pattern problem, adopted bore to change adaptive temperature graded, thereby solved the contradiction of heating with heat radiation.
Claims (7)
1. the different bore slot type reflection mirror array mating with thermograde, it is characterized in that, comprise the slot type speculum that some row are arranged mutually parallel, each row slot type speculum comprises the mirror unit that several are connected mutually, mirror unit comprises thermal-collecting tube and speculum, several thermal-collecting tubes are mutually connected to be communicated with and are formed thermal-collecting tube minute loop, connect from beginning to end and be communicated with for heating circuit in some row thermal-collecting tubes minute loop, according to heat-conducting work medium traffic direction in heating circuit, the opening bore of described speculum increases by column gradually.
2. the different bore slot type reflection mirror array mating with thermograde as claimed in claim 1, is characterized in that, the opening bore of the described speculum in same row is identical.
3. the different bore slot type reflection mirror array mating with thermograde as claimed in claim 1, is characterized in that, described mirror unit also comprises thermal-arrest support and mirror support, and thermal-arrest support and speculum are arranged on mirror support, and thermal-collecting tube is arranged on thermal-arrest support.
4. the different bore slot type reflection mirror array mating with thermograde as claimed in claim 3, is characterized in that, between the interior adjacent described mirror support of every row, is mutually permanently connected.
5. the different bore slot type reflection mirror array mating with thermograde as claimed in claim 1, it is characterized in that, between the interior adjacent described thermal-collecting tube of every row, series connection is communicated with the described thermal-collecting tube of formation and divides loop mutually, heat-conducting work medium is flowed into by a described thermal-collecting tube minute one end, loop, and along pipe string connection direction, flows to the other end in described thermal-collecting tube minute loop.
6. the different bore slot type reflection mirror array mating with thermograde as claimed in claim 1, it is characterized in that, in the described slot type speculum of some row, one end that one heat-conducting work medium of classifying described heating circuit as of the described speculum of lowest calibre flows into is set, one end that a heat-conducting work medium of classifying described heating circuit as of the described speculum of maximum caliber flows out is set.
7. the different bore slot type reflection mirror array mating with thermograde as claimed in claim 1, it is characterized in that, the setting that matches of the columns setting of described slot type speculum and described heating circuit, the difference between its corresponding total radiating and cooling of heat temperature raising sum of every row is maximum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310742248.0A CN103712342A (en) | 2013-12-30 | 2013-12-30 | Different-caliber groove type reflector array matched with temperature gradient |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310742248.0A CN103712342A (en) | 2013-12-30 | 2013-12-30 | Different-caliber groove type reflector array matched with temperature gradient |
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| CN103712342A true CN103712342A (en) | 2014-04-09 |
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| CN201310742248.0A Pending CN103712342A (en) | 2013-12-30 | 2013-12-30 | Different-caliber groove type reflector array matched with temperature gradient |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988907A (en) * | 2022-05-31 | 2022-09-02 | 华中科技大学 | High-specific-component gradient aluminum-based silicon carbide composite material reflector and preparation method thereof |
Citations (7)
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|---|---|---|---|---|
| GB2079445A (en) * | 1980-07-10 | 1982-01-20 | Green Ronald John | Solar collector |
| CN101354191A (en) * | 2008-09-26 | 2009-01-28 | 南京工业大学 | System for utilizing solar step developing heat |
| JP2012077976A (en) * | 2010-09-30 | 2012-04-19 | Daikin Industries Ltd | Solar heat collector and hot water supply system |
| CN102628618A (en) * | 2012-04-26 | 2012-08-08 | 中海阳新能源电力股份有限公司 | Balanced specific gravity temperature distribution type diversion efficient heat collection tube device |
| DE102011004268A1 (en) * | 2011-02-17 | 2012-08-23 | Siemens Aktiengesellschaft | Solar thermal continuous evaporator with local cross-sectional constriction at the inlet |
| CN203116312U (en) * | 2013-01-22 | 2013-08-07 | 深圳市动静追日太阳能科技有限公司 | Groove-type paraboloid solar utilization device |
| CN203719157U (en) * | 2013-12-30 | 2014-07-16 | 中海阳能源集团股份有限公司 | Different-caliber groove-type reflecting mirror array matching temperature gradient |
-
2013
- 2013-12-30 CN CN201310742248.0A patent/CN103712342A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2079445A (en) * | 1980-07-10 | 1982-01-20 | Green Ronald John | Solar collector |
| CN101354191A (en) * | 2008-09-26 | 2009-01-28 | 南京工业大学 | System for utilizing solar step developing heat |
| JP2012077976A (en) * | 2010-09-30 | 2012-04-19 | Daikin Industries Ltd | Solar heat collector and hot water supply system |
| DE102011004268A1 (en) * | 2011-02-17 | 2012-08-23 | Siemens Aktiengesellschaft | Solar thermal continuous evaporator with local cross-sectional constriction at the inlet |
| CN102628618A (en) * | 2012-04-26 | 2012-08-08 | 中海阳新能源电力股份有限公司 | Balanced specific gravity temperature distribution type diversion efficient heat collection tube device |
| CN203116312U (en) * | 2013-01-22 | 2013-08-07 | 深圳市动静追日太阳能科技有限公司 | Groove-type paraboloid solar utilization device |
| CN203719157U (en) * | 2013-12-30 | 2014-07-16 | 中海阳能源集团股份有限公司 | Different-caliber groove-type reflecting mirror array matching temperature gradient |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988907A (en) * | 2022-05-31 | 2022-09-02 | 华中科技大学 | High-specific-component gradient aluminum-based silicon carbide composite material reflector and preparation method thereof |
| CN114988907B (en) * | 2022-05-31 | 2023-01-06 | 华中科技大学 | High-specific-component gradient aluminum-based silicon carbide composite material reflector and preparation method thereof |
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Application publication date: 20140409 |