CN104567028A - Improved heat transmission and accumulation solar heat collection device - Google Patents
Improved heat transmission and accumulation solar heat collection device Download PDFInfo
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- CN104567028A CN104567028A CN201510022540.4A CN201510022540A CN104567028A CN 104567028 A CN104567028 A CN 104567028A CN 201510022540 A CN201510022540 A CN 201510022540A CN 104567028 A CN104567028 A CN 104567028A
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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 an improved heat transmission and accumulation solar heat collection device. The device comprises a cool fluid inlet pipe, an annular splitter cavity, a reinforcement heat exchanger tube, a heat collection cavity, a heat accumulator, a hot fluid outlet pipe, a confluence cavity, an insulating layer and a lens; the heat collection device body is sequentially provided with the heat collection cavity, the heat accumulator and the reinforcement heat exchanger tube from inner to outer; the lower end of the reinforcement heat exchanger tube is connected with the annular splitter cavity which is connected with the cool fluid inlet pipe, the upper end of the reinforcement heat exchanger tube is connected with the confluence cavity which is connected with the hot fluid outlet pipe, and the heat collection cavity opening is provided with the lens; an insulation layer is respectively paved outside the cool fluid inlet pipe, the annular splitter cavity, the reinforcement heat exchanger tube, the heat accumulator and the confluence cavity. The device is characterized in that reinforcement fins are increased and the heat accumulator structure is optimized, when the solar thermal collector is integrated with heat absorption, heat accumulation and heat exchange, the pipeline is simplified in design, the heat transmission capacity is reinforced, the radial temperature difference of the heat accumulator is reduced and the reliability of the system is improved.
Description
Technical field
The present invention relates to a kind of heat-transferring improved heat-storage solar energy heat collector, belong to solar energy utilization technique field.
Background technology
At present, the regenerative resources such as traditional energy reserves reduce day by day, and problem of environmental pollution increases the weight of day by day, development and utilization solar energy not only can provide the huge energy for human society, can also save conventional fossil fuel, preserve the ecological environment.Therefore, the development and utilization of solar energy resources receives the attention of countries in the world for a long time, and become the important directions of China's current energy source development, but due to series of problems such as the discontinuity of the irradiation of solar energy, unstability and energy density are low, very large challenge is brought to the running of solar energy heat utilization system stability.Unnecessary solar heat temporarily can be stored by solar heat-preservation system, when by the time not having sunshine or sunshine not enough again by this part thermal release out, thus ensure that security and the stability of whole solar energy heat utilization system.
Solar heat-preservation system common at present comprises latent heat of phase change accumulation of heat and sensible heat accumulation of heat two kinds, wherein for first heat exchanger, in order to reduce the thermal (temperature difference) stress of this province of heat storage and improve heat exchange efficiency, design snowball is not met under many circumstances merely at heat storage outer surface cloth displacement hot channel, often require, in heat storage inside, heat exchange pipeline is installed, this just considerably increases procedure and the difficulty of heat storage, and pipeline is long, the heat transfer temperature difference of heat exchanger itself also increases, and the maintenance for pipeline also exists many problems.
Therefore, solar energy heat utilization system, at optimization pipeline structure, realizes solar energy heat collector long-term stability, safe operation, improves the space that there are further improvement, lifting in the aspects such as solar energy source utilization rate.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, propose a kind of heat-transferring improved heat-storage solar energy heat collector.
For achieving the above object, the present invention is by the following technical solutions:
Heat-transferring improved heat-storage solar energy heat collector comprises cold fluid inlet tube, annular branch chamber, thermoexcell, heat collector cavity, heat storage, hot fluid outlet ports pipe, chamber of confluxing, heat-insulation layer, lens;
Heat collector body is provided with heat collector cavity, heat storage, thermoexcell from inside to outside in turn, thermoexcell lower end is connected with annular branch chamber, annular branch chamber is connected with cold fluid inlet tube, thermoexcell upper end is connected with chamber of confluxing, chamber of confluxing is connected with hot fluid outlet ports pipe, heat collector cavity accent place is provided with lens, is all laid with heat-insulation layer outside cold fluid inlet tube, annular branch chamber, thermoexcell, heat storage, chamber of confluxing;
Heat storage comprises accumulation of heat body, semicircle pipeline tankage, the first interpolation fin groove, the second internal-rib conduit;
The outside wall surface of accumulation of heat body evenly offers semicircle pipeline tankage, is respectively equipped with the first interpolation fin groove and the second interpolation fin groove between the center of semicircle pipeline tankage and two semicircle pipeline tankages;
Thermoexcell comprises light pipe, connection fin plate, the first interpolation fin plate, the second interpolation fin plate;
Light pipe and interpolation fin plate are welded to connect, first interpolation fin plate and the first interpolation fin slot fit are installed, and fit tightly with semicircle pipeline tankage, connection fin plate and the second interpolation fin plate are welded to connect, second interpolation fin plate and the second interpolation fin slot fit are installed, and are welded to connect respectively between light pipe with connection fin plate two ends.
Described heat storage adopts graphite or high temperature concrete sensible heat heat-storing material.
The thermal conductivity factor of described connection fin plate, the first interpolation fin plate, the second interpolation fin plate material is higher than the thermal conductivity factor of heat storage material.
The angle of gradient at described heat storage top is 30 ° of-60 ° of angles.
The present invention compared with prior art, has following beneficial effect:
(1) present invention achieves the integrated of solar thermal collection system and hold over system, simplify the arrangement of pipeline and the processing structure of heat storage, reduce the manufacturing cost of system.
(2) the present invention is by adopting interpolation fin and the mode at surface of heat accumulator fluting, then effectively improves the temperature difference distribution of heat storage while increasing heat-transfer surface.
Accompanying drawing explanation
Fig. 1 is heat-transferring improved heat-storage solar energy heat collector structural representation;
Fig. 2 is the A-A sectional view of heat-transferring improved heat-storage solar energy heat collector;
Fig. 3 is the thermoexcell structure diagram of heat-transferring improved heat-storage solar energy heat collector;
Fig. 4 is the heat storage body structure sketch of heat-transferring improved heat-storage solar energy heat collector;
In figure: cold fluid inlet tube 1, annular branch chamber 2, thermoexcell 3, heat collector cavity 4, heat storage 5, hot fluid outlet ports pipe 6, chamber 7 of confluxing, heat-insulation layer 8, lens 9, thermal-collecting tube 10, connection fin plate 11, first interpolation fin plate 12, second interpolation fin plate 13, accumulation of heat body 14, semicircle pipeline tankage 15, first interpolation fin groove 16, second internal-rib conduit 17.
Detailed description of the invention
As shown in Figure 1, 2, heat-transferring improved heat-storage solar energy heat collector comprises cold fluid inlet tube 1, annular branch chamber 2, thermoexcell 3, heat collector cavity 4, heat storage 5, hot fluid outlet ports pipe 6, chamber 7 of confluxing, heat-insulation layer 8, lens 9;
Heat collector body is provided with heat collector cavity 4, heat storage 5, thermoexcell 3 from inside to outside in turn, thermoexcell lower end is connected with annular branch chamber 2, annular branch chamber is connected with cold fluid inlet tube 1, thermoexcell upper end is connected with chamber 7 of confluxing, chamber of confluxing is connected with hot fluid outlet ports pipe 6, heat collector cavity 4 accent place is provided with lens 9, is all laid with heat-insulation layer 8 outside cold fluid inlet tube 1, annular branch chamber 2, thermoexcell 3, heat storage 5, chamber 7 of confluxing;
Heat storage 5 comprises accumulation of heat body 14, semicircle pipeline tankage 15, first interpolation fin groove 16, second internal-rib conduit 17;
The outside wall surface of accumulation of heat body 14 evenly offers semicircle pipeline tankage 15, is respectively equipped with the first interpolation fin groove 16 and the second interpolation fin groove 17 between the center of semicircle pipeline tankage and two semicircle pipeline tankages;
Thermoexcell 3 comprises light pipe 10, connection fin plate 11, first interpolation fin plate 12, second interpolation fin plate 13;
Light pipe 10 and interpolation fin plate 12 are welded to connect, first interpolation fin plate coordinates with the first interpolation fin groove 16 to be installed, and fit tightly with semicircle pipeline tankage 15, connection fin plate 11 and the second interpolation fin plate 13 are welded to connect, second interpolation fin plate 13 coordinates with the second interpolation fin groove 17 to be installed, and is welded to connect respectively between light pipe 10 with connection fin plate 11 two ends.
Described heat storage 5 adopts graphite or high temperature concrete sensible heat heat-storing material.
The thermal conductivity factor of described connection fin plate 11, first interpolation fin plate 12, second interpolation fin plate 13 material is higher than the thermal conductivity factor of heat storage 5 material.
The angle of gradient at described heat storage 5 top is 30 ° of-60 ° of angles.
Specific works process of the present invention is as follows:
Sunlight, in focusing mirror in heat collector cavity accent place, is irradiated to the inwall heat-absorbent surface of heat storage after lens distribute, and after heat storage heat absorption, temperature raises.Connection fin plate, the first interpolation fin plate, the second interpolation fin plate, as enhanced heat exchange fin, add the heat exchange area between light pipe and heat storage, enhance the heat exchange between heat storage and light pipe.And, because the first interpolation fin plate, the second interpolation fin plate all have higher thermal conductivity factor, ensure that heat storage is radial by the first interpolation fin groove and the second internal-rib conduit and obtain heat conduction rate, reduce the temperature difference of heat storage, ensure that the uniform temperature of heat storage.When regenerator temperature is elevated to heat exchange threshold temperature, the fluid in thermoexcell starts to be heated, and final inflow in chamber of confluxing is flowed out through hot fluid outlet ports pipe, completes the heating process of fluid working substance.
In heating process, when solar irradiation changes, this device, by the variations in temperature of heat storage, relies on the heat storage capacity of heat storage, thus the flow of assurance device and outlet parameter is relatively stable.When regenerator temperature exceed reach design limit time, then by change flow to ensure the safety and reliability of heat exchanger.
The present invention is by integrated, the integrated design to the heat absorption of solar energy heating chamber, accumulation of heat, heat exchange, make apparatus structure compact, pipeline is simple, solve solar heat well and export unstable problem, meanwhile, invention introduces fin heat transfer enhancement technology, effectively improve the heat transfer effect of system, shorten the length of heat exchanging pipe, reduce the cost of device, economic benefits.
Claims (4)
1. a heat-transferring improved heat-storage solar energy heat collector, is characterized in that comprising cold fluid inlet tube (1), annular branch chamber (2), thermoexcell (3), heat collector cavity (4), heat storage (5), hot fluid outlet ports pipe (6), chamber of confluxing (7), heat-insulation layer (8), lens (9);
Heat collector body is provided with heat collector cavity (4), heat storage (5), thermoexcell (3) from inside to outside in turn, thermoexcell lower end is connected with annular branch chamber (2), annular branch chamber is connected with cold fluid inlet tube (1), thermoexcell upper end is connected with chamber of confluxing (7), chamber of confluxing is connected with hot fluid outlet ports pipe (6), heat collector cavity (4) accent place is provided with lens (9), and cold fluid inlet tube (1), annular branch chamber (2), thermoexcell (3), heat storage (5), chamber of confluxing (7) are all laid with heat-insulation layer (8) outward;
Heat storage (5) comprises accumulation of heat body (14), semicircle pipeline tankage (15), the first interpolation fin groove (16), the second internal-rib conduit (17);
The outside wall surface of accumulation of heat body (14) evenly offers semicircle pipeline tankage (15), is respectively equipped with the first interpolation fin groove (16) and the second interpolation fin groove (17) between the center of semicircle pipeline tankage and two semicircle pipeline tankages;
Thermoexcell (3) comprises light pipe (10), connection fin plate (11), the first interpolation fin plate (12), the second interpolation fin plate (13);
Light pipe (10) and interpolation fin plate (12) are welded to connect, first interpolation fin plate coordinates with the first interpolation fin groove (16) to be installed, and fit tightly with semicircle pipeline tankage (15), connection fin plate (11) and the second interpolation fin plate (13) are welded to connect, second interpolation fin plate (13) coordinates with the second interpolation fin groove (17) to be installed, and is welded to connect respectively between light pipe (10) with connection fin plate (11) two ends.
2. a kind of heat-transferring improved heat-storage solar energy heat collector according to claim 1, is characterized in that described heat storage (5) adopts graphite or high temperature concrete sensible heat heat-storing material.
3. a kind of heat-transferring improved heat-storage solar energy heat collector according to claim 1, is characterized in that the thermal conductivity factor of thermal conductivity factor higher than heat storage (5) material of described connection fin plate (11), the first interpolation fin plate (12), the second interpolation fin plate (13) material.
4. a kind of heat-transferring improved heat-storage solar energy heat collector according to claim 1, is characterized in that the angle of gradient at described heat storage (5) top is 30 ° of-60 ° of angles.
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| CN201510022540.4A CN104567028B (en) | 2015-01-17 | 2015-01-17 | Heat-transferring improved heat-storage solar energy heat collector |
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| CN201510022540.4A CN104567028B (en) | 2015-01-17 | 2015-01-17 | Heat-transferring improved heat-storage solar energy heat collector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953202A (en) * | 2016-05-16 | 2016-09-21 | 浙江大学 | Sensible heat storage type direct steam generation system and method based on series-connection adjustment |
| CN106714519A (en) * | 2017-01-12 | 2017-05-24 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Onboard LRU liquid cooling source |
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| CN104567028B (en) | 2016-05-25 |
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