CN101178265A - High-temperature solar heat pipe receivers - Google Patents
High-temperature solar heat pipe receivers Download PDFInfo
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- CN101178265A CN101178265A CNA2007101911454A CN200710191145A CN101178265A CN 101178265 A CN101178265 A CN 101178265A CN A2007101911454 A CNA2007101911454 A CN A2007101911454A CN 200710191145 A CN200710191145 A CN 200710191145A CN 101178265 A CN101178265 A CN 101178265A
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- heat pipe
- temperature
- heat
- pipe
- temperature heat
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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
Abstract
The invention relates to a high-temperature solar energy receiver. The invention has a structure that heat absorbing sections of each neighboring different-shape high-temperature heat tube are connected two by two and equally arranged to form a heat absorbing cavity; the heat absorbing section of the different-shape high-temperature heat tube takes a shape of shuttle; a bushing is sleeved with a heating section of the different-shape high-temperature heat tube, and a work liquid inlet and a work liquid outlet are arranged on the bushing. The invention solves the defects that the heat absorbing efficiency is low and the use is limited, etc. The invention is provided with the different-shape high-temperature heat tube which is reconstructed on the basis of a column-shaped high-temperature heat tube as the heat absorbing and transmission component, with an easy manufacturing process and low manufacturing cost. Although the heat absorbing sections of each heat tube are mutually connected, the work is comparatively independent and a local failure has no impact on the whole receiver, with high reliability. The heat absorbing cavity is provided with the shuttle, triangle and ellipse, etc. parts which is suitable for receiving incidence light, and then the heat absorbing efficiency is enhanced. No clearance exists in the middle of the high-temperature heat tubes mutually connected in the heat absorbing section so as to prevent incidence light loss and enhance the efficiency of the whole receiver.
Description
Technical field
The present invention relates to a kind of hot pipe receiver, particularly a kind of high temperature solar receiver.
Background technology
The hot generation technology of disc type solar energy is by a parabolic dish-shaped concentrator solar radiation to be gathered in the middle of the receiver, and receiver is delivered to thermoelectric conversion system after with energy absorption, thereby has realized the conversion of solar energy to electrical.Dish formula system is because the efficient height, and is suitable for setting up distributed energy resource system, obtained certain development.Receiver is the core component of disc type solar energy heat generating system, is directly determining overall system efficiency and reliability, therefore is subject to the people's attention.
The receiver of disc type solar energy heat generating system has two types: direct irradiation formula and be subjected to hot type indirectly.The former directly impinges upon on the heat exchanger tube of hot machine after sunshine is assembled, and the latter then is delivered to hot machine by certain intermediary with solar energy.Direct irradiation is the mode of the reception solar energy that uses the earliest of dish formula system, can realize the heat transmission function that absorbs heat because its only needs heat exchanger tube transformation with hot machine (being mainly Stirling engine) be beneficial to receive direct solar radiation.Because there is very significantly unstability in intensity of solar radiation, also may there be certain machining accuracy problem in condenser itself, can make the heat flow density on the heat exchanger tube present very significantly inhomogeneous and wild effect.Like this, the temperature of each cylinder has just become an insoluble problem with the balance that heat is supplied with in the multi-cylinder Stirling engine.
At the problem that direct irradiation formula receiver exists, researchers have proposed the liquid metal phase change heat exchange is applied to utilize the evaporation of liquid metal and the heat exchanger tube that condensation is passed to heat in the hot machine of Stirling in the middle of the design of receiver.This receiver has isothermal preferably, thereby has prolonged the life-span of hot machine heating head, has improved the efficient of hot machine simultaneously.When receiver is designed, can carry out independent optimization to each heat-transfer surface.The design work temperature of this class receiver is generally 650 ℃～850 ℃, and working media is mainly liquid alkali metal sodium, potassium or Na-K alloy, and this mainly is because they have the very low saturated vapour pressure and the higher latent heat of vaporization under hot conditions.
Such receiver comprises the pool boiling receiver again, heat pipe-type receiver etc.
U.S. Pat 4335578, US6487859B2 etc. have related to above-mentioned pool boiling receiver and heat pipe-type receiver respectively.They have shortcoming separately again respectively when realizing efficient heat transfer.Pool boiling formula receiver requires filling amount bigger, and a large amount of liquid metals has increased the weight and the cost of receiver, and the security when also making operation simultaneously can not get better guarantee.The heat pipe-type receiver has reduced the filling amount of heat pipe, but owing to relate to large-area imbibition core distribution, and difficulty of processing is bigger, still has problems in actual applications.The receiver that relates in above-mentioned several the patents will lose efficacy in case whole receiver occurs leaking because heat-absorbent surface is exactly the fire end of single heat pipe.
Based on above reason, above-mentioned receiver all exists problems such as the security that can not be ignored and reliability in actual applications, can't realize long-time running.
But U.S. Pat 5113659 has related to a kind of high-temperature heat pipe receiver of accumulation of heat.This receiver is to be combined by many cylindric high-temperature heat pipes, has improved the reliability of receiver.But there is following shortcoming:
1. owing to adopt common cylinder shape high-temperature heat pipe, endotherm section is cylindric, and its surface normal direction and incident light that receives sunshine has very big angle, has influenced the efficient of heat absorption;
2. because big space is arranged between every heat pipe of endotherm section, cause sunlight not shine directly into the heat pipe wall greatly again, further reduced the thermal efficiency of receiver;
3. the receiver that relates to of this patent is mainly considered heat accumulation function, and this has just limited the adaptability of receiver to the different capacity electricity generation system, because if the heat pipe negligible amounts, institute's amount of stored heat will be not enough to keep the work of receiver.So the design power of receiver can not regulated at will, but must adjust the heat pipe radical under the condition of accumulation of heat satisfying, this just brings significant limitation to the use of receiver.
Summary of the invention
Purpose of the present invention just is to overcome above-mentioned defective, designs, develops a kind of high-temperature solar heat pipe receivers.
Technical scheme of the present invention is:
High-temperature solar heat pipe receivers, comprise by the uniform heat-absorbing chamber that combines of several special-shaped high-temperature heat pipe centerings, the working fluid passage that constitutes by sleeve pipe and high-temperature heat pipe heat release section, be used for irreflexive ceramic cone, the working fluid inlet tube, the working fluid outlet, and ceramic lightlng hole, its major technique is characterised in that heat-absorbing chamber is connected in twos by the endotherm section of every adjacent special-shaped high-temperature heat pipe and centering is uniform and forms, the endotherm section of special-shaped high-temperature heat pipe is a fusiformis, casing pipe sleeve is on the heat release section of special-shaped high-temperature heat pipe, and sleeve pipe is provided with the working fluid import, the working fluid outlet.
The present invention has following tangible advantage compared to other receiver schemes:
The present invention adopted theoretical research and processing and manufacturing all the special-shaped high-temperature heat pipe that is transformed into of the cylindric high-temperature heat pipe of comparative maturity as the heat absorption heat transfer element, bring great convenience for the processing of receiver, make that also the cost of receiver is lower than above-mentioned other heat pipe-type receivers simultaneously.
The present invention is a kind of combined type receiver, adopts several special-shaped high-temperature heat pipes as the heat absorption heat transfer element, and every heat pipe links to each other in twos at endotherm section.The work of every high-temperature heat pipe but is relatively independent, even the somewhere is owing to the too high heat spot that occurs of the heat flow density that receives like this, even the heat pipe leakage failure appears, bring influence can't for the work of other heat pipe, this has just well guaranteed the reliability of receiver, but long-time running is in the environment of high heat flux or heat flow density inequality.
The part of high-temperature heat pipe in heat-absorbing chamber is designed to the suitable shape that receives incident light, and as fusiformis, triangle, ellipse etc., the angle of heat absorption surface normal direction and incident light is very little, has improved heat absorption efficiency.
Every high-temperature heat pipe links to each other in twos at endotherm section, and middle and tight, all incident lights all shine directly into the heat absorption surface, have so just prevented the loss of incident light, have improved the efficient of whole receiver.
Because several special-shaped high-temperature heat pipes of the present invention are combined into heat-absorbing chamber, make receiver can regulate the thermal power of whole receiver according to the quantity of selecting high-temperature heat pipe for use, but the performance of single high-temperature heat pipe is not improved requirement.
Description of drawings:
Fig. 1---structural principle schematic diagram of the present invention.
Fig. 2---the right view among Fig. 1.
Fig. 3---the sleeve structure schematic diagram among the present invention.
The specific embodiment:
As Fig. 1, Fig. 2, shown in Figure 3, the high-temperature solar heat pipe receivers structure that is used for the generating of disc type solar energy heat comprises several special-shaped high-temperature heat pipes 1, by the uniform heat-absorbing chamber that forms 2 of high-temperature heat pipe 1 centering, high-temperature heat pipe 1 is separated into the ceramic cone 3 of endotherm section and heat release section, the sleeve pipe 4 that is used for the working fluid heat exchange, working fluid inlet tube 5 and working fluid outlet 6.The part of high-temperature heat pipe 1 in sleeve pipe 4 is cylindric, and the part in heat-absorbing chamber then is processed to fusiformis, and links to each other in twos.The heat release section outer wall of the high-temperature heat pipe 1 in the sleeve pipe 4 installs helical fin 7 additional, is used for the heat exchange of strengthening fluid.The heat-absorbing chamber opening part is provided with the lightlng hole 8 that ceramic material is made.The tubing of the high-temperature heat pipe 1 of present embodiment is heat-resisting alloy steel, and inner capillary structure is silk screen imbibition core (also can be sintered wicks), and the working medium of employing is liquid metal sodium, and the working fluid in the sleeve pipe is a helium.
The high-temperature solar heat pipe receivers that is used for the generating of disc type solar energy heat of present embodiment is when work, and the sunshine after dish-shaped concentrator is assembled incides in the heat-absorbing chamber from lightlng hole 8, and the endotherm section absorption by high-temperature heat pipe 1 becomes heat energy in this transform light energy.All heat energy passes to the interior liquid metal sodium of pipe by the tube wall of high-temperature heat pipe 1.The phase-change heat-exchange of sodium metal by evaporative condenser is passed to the tube wall of the heat release section of high-temperature heat pipe 1 with heat, and a part of heat passes to the outer helical fin 7 of pipe by heat conduction.Simultaneously, the working fluid helium of the high pressure that flows to from working fluid inlet tube 5 when flowing through sleeve pipe is taken away the heat of heat pipe wall and helical fin, flows out from working fluid outlet 6 afterwards, and this moment, the temperature of helium reached 700 ℃.Can enter hot machine after the helium of HTHP flows out promotes hot machine running and generates electricity.
Present embodiment has been considered the heat insulating ability of whole receiver, coated with resistant to elevated temperatures heat-insulation layer 9, then is covered with the shells 10 of aluminium alloy in the receiver outside outside the heat-insulation layer 9.So just reduce the heat loss of receiver to greatest extent, guaranteed the thermal efficiency of receiver.
Except that above embodiment, the present invention can have numerous embodiments, allly replaces or similar combined transformation all drops within the protection domain that the present invention requires in the equivalence implemented on the basis of the present invention.
Claims (10)
1. high-temperature solar heat pipe receivers, comprise by the uniform heat-absorbing chamber that combines of several special-shaped high-temperature heat pipe centerings, the working fluid passage that constitutes by sleeve pipe and high-temperature heat pipe heat release section, be used for irreflexive ceramic cone, the working fluid inlet tube, the working fluid outlet, and ceramic lightlng hole, it is characterized in that heat-absorbing chamber is connected in twos by the endotherm section of every adjacent special-shaped high-temperature heat pipe and centering is uniform forms, the endotherm section of special-shaped high-temperature heat pipe is a fusiformis, casing pipe sleeve is on the heat release section of special-shaped high-temperature heat pipe, and sleeve pipe is provided with the working fluid import, the working fluid outlet.
2. high-temperature solar heat pipe receivers according to claim 1 is characterized in that: the shape of cross section of special-shaped high-temperature heat pipe endotherm section also can be ellipse or triangle or circle.
3. high-temperature solar heat pipe receivers according to claim 1 is characterized in that: the shape of cross section of special-shaped high-temperature heat pipe heat release section is round.
4. high-temperature solar heat pipe receivers according to claim 1 is characterized in that: described heat-absorbing chamber is cylindric cavity.
5. according to high-temperature solar heat pipe receivers as claimed in claim 1, it is characterized in that: described high-temperature heat pipe heat release section, endotherm section are separated by ceramic cone.
6. high-temperature solar heat pipe receivers according to claim 1 is characterized in that: the heat release section of the interior high-temperature heat pipe of sleeve pipe can install fin additional or the opposite heat tube outer wall carries out extended surface processing.
7. high-temperature solar heat pipe receivers according to claim 7 is characterized in that: the fin in the sleeve pipe can be axial straight fins or helical fin.
8. high-temperature solar heat pipe receivers according to claim 1 is characterized in that: be provided with the imbibition core in the described high-temperature heat pipe, the pattern of described imbibition core can be silk screen imbibition core or metal powder sintered imbibition core or silk screen groove composite liquid sucking core.
9. high-temperature solar heat pipe receivers according to claim 1 is characterized in that: described heat-absorbing chamber opening part is provided with the ceramic lightlng hole of annular.
10. high temperature solar heat pipe recipient according to claim 1 is characterized in that: the working media in the described high-temperature heat pipe is liquid metal sodium, potassium or Na-K alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710191145A CN100585295C (en) | 2007-12-10 | 2007-12-10 | High-temperature solar heat pipe receivers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710191145A CN100585295C (en) | 2007-12-10 | 2007-12-10 | High-temperature solar heat pipe receivers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101178265A true CN101178265A (en) | 2008-05-14 |
| CN100585295C CN100585295C (en) | 2010-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710191145A Expired - Fee Related CN100585295C (en) | 2007-12-10 | 2007-12-10 | High-temperature solar heat pipe receivers |
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| CN (1) | CN100585295C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102915A (en) * | 2011-03-02 | 2011-06-22 | 浙江大学 | U-shaped channel combined heat pipe receiver |
| CN103090551A (en) * | 2011-10-31 | 2013-05-08 | 杭州三花研究院有限公司 | Solar receiver |
| CN108005810A (en) * | 2017-12-29 | 2018-05-08 | 天津绿能通汇科技发展有限公司 | The integral heater component of solar energy Stirling engine |
| CN108375212A (en) * | 2016-10-25 | 2018-08-07 | 李渊 | A kind of thermal-collecting tube for disc type solar energy speculum heat build-up |
| CN113294920A (en) * | 2021-06-09 | 2021-08-24 | 湖南科技大学 | Jet-suction jet flow enhanced heat exchange volumetric solar heat absorber |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148607B (en) * | 2013-03-28 | 2015-03-11 | 兰州理工大学 | Solar heat absorber |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4335578A (en) * | 1980-05-30 | 1982-06-22 | Ford Aerospace & Communications Corporation | Solar power converter with pool boiling receiver and integral heat exchanger |
| US4642988A (en) * | 1981-08-14 | 1987-02-17 | New Process Industries, Inc. | Solar powered free-piston Stirling engine |
| US4586334A (en) * | 1985-01-23 | 1986-05-06 | Nilsson Sr Jack E | Solar energy power generation system |
| US5404723A (en) * | 1991-03-12 | 1995-04-11 | Solar Reactor Technologies, Inc. | Fluid absorption receiver for solar radiation to power a Stirling cycle engine |
| US5113659A (en) * | 1991-03-27 | 1992-05-19 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Solar thermal energy receiver |
| CN2414356Y (en) * | 2000-03-30 | 2001-01-10 | 姚德龙 | Box type heat-pipe solar energy heat collector |
| US6487859B2 (en) * | 2000-08-03 | 2002-12-03 | Midwest Research Institute | Dish/stirling hybrid-receiver |
-
2007
- 2007-12-10 CN CN200710191145A patent/CN100585295C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102915A (en) * | 2011-03-02 | 2011-06-22 | 浙江大学 | U-shaped channel combined heat pipe receiver |
| CN103090551A (en) * | 2011-10-31 | 2013-05-08 | 杭州三花研究院有限公司 | Solar receiver |
| CN103090551B (en) * | 2011-10-31 | 2016-08-24 | 杭州三花研究院有限公司 | A kind of solar receiver |
| CN108375212A (en) * | 2016-10-25 | 2018-08-07 | 李渊 | A kind of thermal-collecting tube for disc type solar energy speculum heat build-up |
| CN108375212B (en) * | 2016-10-25 | 2021-03-02 | 玉环未涞流体科技有限公司 | Heat collecting tube for heat collection of disc type solar reflector |
| CN108005810A (en) * | 2017-12-29 | 2018-05-08 | 天津绿能通汇科技发展有限公司 | The integral heater component of solar energy Stirling engine |
| CN113294920A (en) * | 2021-06-09 | 2021-08-24 | 湖南科技大学 | Jet-suction jet flow enhanced heat exchange volumetric solar heat absorber |
| CN113294920B (en) * | 2021-06-09 | 2022-03-08 | 湖南科技大学 | Jet-suction jet flow enhanced heat exchange volumetric solar heat absorber |
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| Publication number | Publication date |
|---|---|
| CN100585295C (en) | 2010-01-27 |
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Granted publication date: 20100127 Termination date: 20111210 |