CN104808324A - Solar disk type power generation secondary condensation tube - Google Patents
Solar disk type power generation secondary condensation tube Download PDFInfo
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- CN104808324A CN104808324A CN201510200096.0A CN201510200096A CN104808324A CN 104808324 A CN104808324 A CN 104808324A CN 201510200096 A CN201510200096 A CN 201510200096A CN 104808324 A CN104808324 A CN 104808324A
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- Prior art keywords
- absorber
- secondary condensation
- condensation tube
- condenser
- power generation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Photovoltaic Devices (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention relates to a solar disk type power generation secondary condensation tube. The solar disk type power generation secondary condensation tube comprises a condensation tube body and is characterized in that the inner wall of the tapered condensation tube body is provided with a reflective material, the large end of the condensation tube body is arranged at the focal spot of a condenser, and the small end of the condensation tube body is arranged in a solar energy incidence opening of an absorber. The solar disk type power generation secondary condensation tube has the advantages that the inner wall of the tapered secondary condensation tube is provided with the reflective material, the tapered tube is arranged at the focal spot of the condenser, the solar energy focused by the condenser is subjected to secondary condensation in the tapered tube, and the solar energy is sent to the incidence opening of the absorber after secondary condensation, so that the diameter of the incidence opening of the absorber is reduced, and the purposes of reducing external heat loss of the incidence opening of the absorber and improving the efficiency of the absorber.
Description
Technical field
The present invention relates to a kind of sun power dish-style generating secondary condensation pipe, belong to optically focused class solar energy thermal-power-generating (CSP), particularly sun power dish-style dynamic power system technical field.
Background technology
There is abundant solar energy resources in China, and the whole nation has the year sun power irradiation in more than 2/3rds areas to exceed
(He Zinian, solar thermal utilization, publishing house of China Science & Technology University, 2009:48).Calculate by these data, the whole nation exceedes
area year sun power irradiation is more than 3.2 × 10
16mJ, amounts to standard coal equivalent 1.1 trillion tons.National raw coal output 38.7 hundred million tons in 2014; Generated energy 56495.8 hundred million kilowatt-hour (2.03 × 10
13mJ); Year not national capacity of installed generator 136019 kilowatts, wherein thermoelectricity installed capacity 1,988 ten thousand kilowatts, increases by 5.9%; Grid-connected solar electrical energy generation installed capacity 2,652 ten thousand kilowatts, increases 67.0%(People's Republic of China (PRC) national economy and social development statistical communique in 2014, People's Daily .2015.2.27).Visible, the whole nation exceedes
the sun power that area year receives, is equivalent to more than 284 times of raw coal output in 2014; If solar energy generating efficiency is 10%, year sun power irradiation is only needed to exceed
6.3 ‰ areas just can send annual generated energy in 2014; If solar energy generating efficiency is 20%, year sun power irradiation is only needed to exceed
3.2 ‰ areas just can send annual generated energy in 2014.Therefore, sun power can substitute fossil energy completely, and solar electrical energy generation can become the main body of all generatings completely, and sun power is the main body of future source of energy, and the termination in fossil energy epoch is exactly the future of sun power, improves solar energy generating efficiency significant.
Solar electrical energy generation is mainly divided into solar energy power generating (PV) and Photospot solar dynamic power system (CSP).CSP installed capacity will be increased to 15GW to the year two thousand twenty, 83GW is risen to the year two thousand thirty, annual compound growth rate during ~ the year two thousand thirty in 2012 reaches 21.5%, higher than the 15.1%(International Renewable Energy Agency of PV, Remap 2030-A Renewable Energy Roadmap, January 2014).
CSP is mainly divided into slot type generating, tower-type electricity generation and dish-style generating.According to thermodynamic principles, high temperature heat source temperature more high generation efficiency is higher, dish-style generating can produce the highest high temperature heat source in CSP, dish-style generating can obtain the focusing ratio of 1000 ~ 5000, far exceed slot type generating and tower-type electricity generation, the high temperature of more than 1500 DEG C can be obtained, but for current hot generation technology, in fact the advantage of such high temperature can not be fully played, and is subject to the restriction of the series of problems such as double-axis tracking precision, absorber, engine.
The reflecting surface of dish-style condenser can be sphere, also can be the parabola rotated, through quadric surface catoptric imaging, incide the sunshine of condenser reflecting surface, focus in focus, produce very high energy resource density, the position angle of condenser double-axis tracking sun power and elevation angle, make sunshine converge to the focus of condenser optical axis all the time, there is no the cosine losses of optics, there is very high optical efficiency.Sun diameter is 1.392 × 10
9rice, astronomical unit is 1.496 × 10
11rice, the sunshine inciding condenser is not directional light, and has a loose angle, sun incident light falls apart angle radian, and this loose angle makes sunshine after paraboloid of revolution reflective surface focuses on, and forms a focal plane at focus place, also known as focal spot, the size of focal spot also reflects the manufacturing accuracy of condenser.Desirable parabola, sunshine at the focused spot diameter of condenser optical axis focus is
In formula :-focused spot diameter;-parabola focal length;-parabolic reflector opening diameter;-sunshine scattering angle.
Desirable dish-style generating absorber, be a black matrix for the sun power focused on, the sun power of focusing is all absorbed by absorber, is then delivered to working medium, and absorber efficiency is 100%.Absorber must be provided with the sun power entrance aperture of focusing, is called for short entrance aperture.Actual condenser double-axis tracking precision has certain error, and focal spot will depart from condenser optical axis, and add the focal spot increase that manufacturing accuracy causes, entrance aperture diameter must be greater than focused spot diameter, otherwise the sun power focused on does not enter absorber.Entrance aperture diameter is larger, and the thermal loss of absorber to the radiation of environment, convection current, conduction will increase, and the diameter reducing entrance aperture has to utilize and reduces absorber thermal loss, improves absorber efficiency.
Summary of the invention
The object of this invention is to provide a kind of can reduce absorber entrance aperture under the prerequisite not increasing the sun loss of energy entering absorber diameter, have the sun power dish-style generating secondary condensation pipe utilizing and reduce absorber thermal loss, improve absorber efficiency.
Technical scheme of the present invention is as follows:
The present invention includes condenser tube ferrule body, it is characterized in that: condenser tube ferrule body is taper, is provided with reflecting material at inboard wall of tube body; The sun power entrance aperture that the large end of condenser tube ferrule body is placed in the focal spot place of condenser, small end is placed in absorber.
Advantage of the present invention is: because secondary condensation pipe of the present invention is a reducer, inside pipe wall is reflecting material, and this reducer is placed in the focal spot place of condenser.Through the sun power that condenser focuses on, then pass through this reducer secondary condensation.Sun power through secondary condensation delivers to absorber entrance aperture again, can reduce absorber entrance aperture diameter, reaches and reduces absorber entrance aperture to external heat losses, the object improving absorber efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of sun power dish-style of the present invention generating secondary condensation pipe;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is sun light path schematic diagram.
In figure, 1 is secondary condensation pipe body; 2 is reflecting material; 3 is absorber; 4 is the paraboloid of revolution or sphere condenser; 5 to fall apart angle for sunshine.
Embodiment
As shown in Figure 1, 2, secondary condensation pipe of the present invention is a body 1 is the reducer of taper, and point large end, small end, secondary condensation pipe inboard wall of tube body is provided with reflecting material 2.
As shown in Figure 3, the large end of secondary condensation pipe body 1 is placed in the focal spot place of condenser 4, and the small end of secondary condensation pipe body 1 is placed in the sun power entrance aperture of absorber 3.The sun power at focal spot place sends into absorber after secondary condensation pipe secondary condensation, reduces absorber sun power entrance aperture size, thus reduces absorber to external heat losses, reach the object improving absorber efficiency.
Claims (1)
1. a sun power dish-style generating secondary condensation pipe, comprises condenser tube ferrule body, it is characterized in that: condenser tube ferrule body is taper, is provided with reflecting material at inboard wall of tube body; The sun power entrance aperture that the large end of condenser tube ferrule body is placed in the focal spot place of condenser, small end is placed in absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510200096.0A CN104808324A (en) | 2015-04-26 | 2015-04-26 | Solar disk type power generation secondary condensation tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510200096.0A CN104808324A (en) | 2015-04-26 | 2015-04-26 | Solar disk type power generation secondary condensation tube |
Publications (1)
| Publication Number | Publication Date |
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| CN104808324A true CN104808324A (en) | 2015-07-29 |
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ID=53693296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510200096.0A Pending CN104808324A (en) | 2015-04-26 | 2015-04-26 | Solar disk type power generation secondary condensation tube |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597026A (en) * | 2009-07-03 | 2009-12-09 | 西安交通大学 | The biomass supercritical water gasification hydrogen production System and method for that focusing solar energy drives |
| US20120180847A1 (en) * | 2010-04-07 | 2012-07-19 | Suntrix Co., Ltd. | Method for improving solar energy condensation efficiency in solar energy condensation electric power facility |
| CN202434553U (en) * | 2011-12-30 | 2012-09-12 | 中国科学院苏州纳米技术与纳米仿生研究所 | Flat-top total-reflection type secondary light concentrating and homogenizing integrated device |
| CN103148607A (en) * | 2013-03-28 | 2013-06-12 | 兰州理工大学 | Solar heat absorber |
| CN104113279A (en) * | 2013-04-17 | 2014-10-22 | 容云 | Condensing solar energy photovoltaic power generating device |
| CN104426471A (en) * | 2013-09-10 | 2015-03-18 | 上海空间电源研究所 | Secondary condenser for condensation solar photovoltaic system |
-
2015
- 2015-04-26 CN CN201510200096.0A patent/CN104808324A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597026A (en) * | 2009-07-03 | 2009-12-09 | 西安交通大学 | The biomass supercritical water gasification hydrogen production System and method for that focusing solar energy drives |
| US20120180847A1 (en) * | 2010-04-07 | 2012-07-19 | Suntrix Co., Ltd. | Method for improving solar energy condensation efficiency in solar energy condensation electric power facility |
| CN202434553U (en) * | 2011-12-30 | 2012-09-12 | 中国科学院苏州纳米技术与纳米仿生研究所 | Flat-top total-reflection type secondary light concentrating and homogenizing integrated device |
| CN103148607A (en) * | 2013-03-28 | 2013-06-12 | 兰州理工大学 | Solar heat absorber |
| CN104113279A (en) * | 2013-04-17 | 2014-10-22 | 容云 | Condensing solar energy photovoltaic power generating device |
| CN104426471A (en) * | 2013-09-10 | 2015-03-18 | 上海空间电源研究所 | Secondary condenser for condensation solar photovoltaic system |
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Application publication date: 20150729 |