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CN103075816A - High-temperature heat absorber based on disc type solar power system - Google Patents

High-temperature heat absorber based on disc type solar power system Download PDF

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Publication number
CN103075816A
CN103075816A CN2013100097233A CN201310009723A CN103075816A CN 103075816 A CN103075816 A CN 103075816A CN 2013100097233 A CN2013100097233 A CN 2013100097233A CN 201310009723 A CN201310009723 A CN 201310009723A CN 103075816 A CN103075816 A CN 103075816A
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CN
China
Prior art keywords
heat dump
heat
high temperature
core body
heat absorber
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Granted
Application number
CN2013100097233A
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Chinese (zh)
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CN103075816B (en
Inventor
林峰
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Du Juan
Lu Wen
Tong Zhiting
Wang Kai
Zuo Laisheng
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Individual
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/80Solar heat collectors using working fluids comprising porous material or permeable masses directly contacting the working fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Photovoltaic Devices (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

The invention relates to the field of solar thermal power generation and in particular relates to a high-temperature heat absorber based on a disc type solar power system. A small pore is formed on a core body of the heat absorber, so that a pressure cavity directly enters the inner cavity of the heat absorber through the small hole on the core body of the heat absorber, thereby shortening the air flow path and enabling the pressure loss of the air to be very small; moreover, the heat absorber is small in size and light in weight, and capable of realizing air outlet temperature of 800 DEG C or higher while being used to a disc with a high light-condensing multiple.

Description

A kind of high temperature heat absorber based on the disc type solar energy electricity generation system
Technical field
The present invention relates to the solar energy thermal-power-generating field, the spy relates to a kind of high temperature heat absorber based on the disc type solar energy electricity generation system.
Background technology
That disc type solar energy heat generating has is pollution-free, scale flexibly, the advantage such as failure rate is low, construction period be short, received increasing concern.The temperature of Dish solar thermal power system is very high, can reach more than 1000 ℃, relatively be fit to adopt air as working medium, Brayton cycle is adopted in circulation, the air of normal temperature and pressure is by after the compressor pressurizes, be transported in the solar heat absorber, after the heat dump heating, promote the air turbine acting.
For the Brayton cycle take air as working medium, maximum temperature is higher, the cycle efficieny of whole system is also just higher, this just means that the disc type solar energy heat dump must move under hot environment, and have higher heat exchange efficiency and less volume, to realize that outlet temperature is more than 800 ℃.And traditional disc type solar energy heat dump can only be up to 600 ℃.
The Chinese invention patent external heat dump of heat engine " compression outer " (application number: CN201210185384.X) disclosedly be: the external heat dump of the outer heat engine of compression, communicate with outer heat engine cylinder body, comprise housing, heat absorption core body, described heat absorption core body is arranged in the housing, along described heat absorption core body gas passage is set, described gas passage be arranged in the heat absorption core body, on the housing or housing with absorb heat between the core body.The advantage of this invention is that thermal source enters heat dump middle part, makes heat-obtaining more direct, makes heat dump can reach the purpose of abundant heat absorption, and the structure of gas channel in the multiple heat absorption core body is provided simultaneously, reduces the gas flow resistance, accelerates to conduct heat.But should the also unexposed heat exchanger core body inner structure of invention construct, be not easy to implement, simultaneously this invention does not relate to how utilizing solar energy heat absorbing.
Summary of the invention
In order to solve the not high problem of traditional disc type solar energy heat dump outlet temperature, the present invention designs a kind of disc type solar energy heat dump of cavity type, by at the heat dump core body aperture being set, make pressure chamber directly enter the heat dump inner chamber through the aperture of heat dump core body, shortened the flow process of air, the pressure loss of air is very little, so that gases at high pressure can be brought up to rapidly more than 800 ℃ from 300 ℃ rapidly.
Technical scheme of the present invention is: a kind of high temperature heat absorber for Dish solar thermal power system, comprise heat dump, be used for collecting the condenser of the sunshine of dish face reflection, condenser places the front end of heat dump, transparent glass window is characterized in that: heat dump comprises pressure chamber, heat dump inner chamber, heat dump core body, heat dump shell, admission line and outlet pipe; Transparent glass window and heat dump shell decomposition pressure chamber; Sunshine can see through transparent glass window and focus on the heat dump core body, and the heat dump core body is provided with aperture; Air enters into pressure chamber through admission line, enters the heat dump inner chamber by the aperture in the heat dump core body, flows out heat dump through outlet pipe.Its beneficial effect is: with traditional tubular type heat dump ratio, the flow process of air is very short, and the pressure loss of air is very little.And the volume of heat dump is little, lightweight, is used on the plate of high light concentrating times, can realize the air exit temp more than 800 ℃.
The high temperature heat absorber of aforesaid Dish solar thermal power system is characterized in that: described high temperature heat absorber also comprises thermal insulation layer, the described thermal insulation layer outer surface that is coated in the heat dump shell tightly.
The high temperature heat absorber of aforesaid Dish solar thermal power system is characterized in that: described thermal insulation layer adopts the chamotte insulation material, and thickness is 20mm ~ 30mm.Its useful effect is: the heat that both can guarantee heat dump inside does not does not scatter and disappear, and can guarantee again the weight of heat dump.
The high temperature heat absorber of aforesaid Dish solar thermal power system is characterized in that: described heat dump core body adopts porous ceramic film material, and its pore diameter range is 0.1mm ~ 1mm.Its useful effect is: the heat dump core body can bear 1000 ℃ high temperature, and has very large heat exchange area, so that gases at high pressure can be brought up to rapidly more than 800 ℃ from 300 ℃ rapidly.
The high temperature heat absorber of aforesaid Dish solar thermal power system is characterized in that: described heat dump core body aperture is 0.4mm.Its useful effect is: can realize better heat exchange effect.
The high temperature heat absorber of aforesaid Dish solar thermal power system is characterized in that: described transparent glass window is following transparency silica glass or crystalline ceramics of 5mm.Its useful effect is: can ensure enough light transmissions, can bear again 6 atmospheric pressure and 800 ℃ of high temperature.
The high temperature heat absorber of aforesaid Dish solar thermal power system is characterized in that: high temperature resistant asbestos washer is adopted in the sealing between described transparent glass window and the pressure chamber.Its useful effect is: whole heat dump, can not leak air because of expanding with heat and contract with cold faster in the process in variations in temperature.
Description of drawings
Fig. 1 is the high temperature heat absorber structural representation based on the disc type solar energy electricity generation system of the present invention.
The specific embodiment:
Description of reference numerals: 1-condenser; 2-transparent glass window; 3-asbestos washer; 4-heat dump core body; 5-heat dump shell, 6-pressure chamber, 7-admission line, 8-outlet pipe, 9-heat dump inner chamber, 10-thermal insulation layer.
As shown in Figure 1, condenser 1 places the front end of heat dump, be used for collecting the sunshine of dish face reflection, heat dump mainly comprises transparent glass window 2, pressure chamber 6, heat dump inner chamber 9, heat dump core body 4, heat dump shell 5, admission line 7 and outlet pipe 8, transparent glass window 2 and heat dump shell 5 decomposition pressure chambeies 6, the centre seals by asbestos washer 3.Sunshine sees through transparent glass window and focuses on the heat dump core body 4, and heat dump core body 4 is heated to more than 1000 ℃.The pressure-air that temperature is lower enters into pressure chamber 6 according to direction shown in the arrow, then enter heat dump inner chamber 9 by the aperture in the heat dump core body 4, in the process that flows through heat dump core body 4, air is heated rapidly, then flows out heat dump according to the direction shown in the figure upward arrow.
Transparent glass window 2 of the present invention adopts 5mm following transparency silica glass or transparent ceramic material, can ensure enough light transmissions like this, can bear again 6 atmospheric pressure and 800 ℃ of high temperature.High temperature resistant asbestos washer 3 has been adopted in the simultaneously sealing between transparent glass window 2 and pressure chamber 6, realizes that whole heat dump, can not leak air because of expanding with heat and contract with cold faster in the process in variations in temperature.Heat dump core body 4 has adopted porous ceramic film material simultaneously, pore diameter range is 0.1mm ~ 1mm, the aperture effect of generally choosing about 0.4mm is best, heat dump core body 4 can bear 1000 ℃ high temperature like this, and have very large heat exchange area and less flow resistance, so that gases at high pressure can be brought up to rapidly more than 800 ℃ from 300 ℃ rapidly.Thermal insulation layer 10 adopts the chamotte insulation material, and the outer surface that is coated in heat dump shell 5 tightly, thickness are 20mm ~ 30mm, both can guarantee that the heat of heat dump inside does not does not scatter and disappear, and can guarantee again the weight of heat dump.

Claims (7)

1. high temperature heat absorber that is used for Dish solar thermal power system, comprise heat dump, be used for collecting the condenser of the sunshine of dish face reflection, condenser places the front end of heat dump, transparent glass window is characterized in that: heat dump comprises pressure chamber, heat dump inner chamber, heat dump core body, heat dump shell, admission line and outlet pipe; Transparent glass window and heat dump shell decomposition pressure chamber; Sunshine can see through transparent glass window and focus on the heat dump core body, and the heat dump core body is provided with aperture; Air enters into pressure chamber through admission line, enters the heat dump inner chamber by the aperture in the heat dump core body, flows out heat dump through outlet pipe.
2. the high temperature heat absorber of Dish solar thermal power system as claimed in claim 1, it is characterized in that: described high temperature heat absorber also comprises thermal insulation layer, the described thermal insulation layer outer surface that is coated in the heat dump shell tightly.
3. the high temperature heat absorber of Dish solar thermal power system as claimed in claim 2 is characterized in that: described thermal insulation layer adopts the chamotte insulation material, and thickness is 20 mm ~ 30mm.
4. such as the high temperature heat absorber of claim 1,2 or 3 described Dish solar thermal power systems, it is characterized in that: described heat dump core body adopts porous ceramic film material, and its pore diameter range is 0.1mm ~ 1mm.
5. such as the high temperature heat absorber of claim 1,2 or 3 described Dish solar thermal power systems, it is characterized in that: described heat dump core body aperture is 0.4 mm.
6. such as the high temperature heat absorber of claim 1,2 or 3 described Dish solar thermal power systems, it is characterized in that: described transparent glass window is following transparency silica glass or crystalline ceramics of 5mm.
7. such as the high temperature heat absorber of claim 1,2 or 3 described Dish solar thermal power systems, it is characterized in that: high temperature resistant asbestos washer is adopted in the sealing between described transparent glass window and the pressure chamber.
CN201310009723.3A 2013-01-11 2013-01-11 A kind of high temperature heat absorber based on disc type solar energy electricity generation system Expired - Fee Related CN103075816B (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940120A (en) * 2014-05-12 2014-07-23 哈尔滨工业大学 High-temperature solar air heating device
CN106196655A (en) * 2016-09-06 2016-12-07 湖南科技大学 A kind of solar energy thermal-power-generating displacement air heat extractor of many pocket surfaces
US11608196B2 (en) 2020-07-22 2023-03-21 Trans Astronautica Corporation Directing light for thermal and power applications in space
US11643930B2 (en) 2015-04-22 2023-05-09 Trans Astronautica Corporation Optics and structure for space applications
US11725513B2 (en) 2018-08-07 2023-08-15 Trans Astronautica Corporation Systems and methods for radiant gas dynamic mining of permafrost for propellant extraction
US11748897B1 (en) 2022-06-24 2023-09-05 Trans Astronautica Corporation Optimized matched filter tracking of space objects
CN117821092A (en) * 2024-01-31 2024-04-05 浙江大学 Treatment system for waste fan blades through solar photo-thermal pyrolysis
US12025006B2 (en) 2020-09-22 2024-07-02 Trans Astronautica Corporation Systems and methods for radiant gas dynamic mining of permafrost
US12025078B2 (en) 2020-04-27 2024-07-02 Trans Astronautica Corporation Omnivorous solar thermal thruster, cooling systems, and thermal energy transfer in rockets

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101173332A (en) * 2007-11-21 2008-05-07 大连华乌科技转化有限公司 Method for producing polyporous material based on solid/gas eutectic directional solidification
CN101307956A (en) * 2008-06-24 2008-11-19 中国科学院电工研究所 Solar energy electricity power station bearing type air thermal absorber
WO2012076344A2 (en) * 2010-12-06 2012-06-14 Alstom Technology Ltd Improved solar receiver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101173332A (en) * 2007-11-21 2008-05-07 大连华乌科技转化有限公司 Method for producing polyporous material based on solid/gas eutectic directional solidification
CN101307956A (en) * 2008-06-24 2008-11-19 中国科学院电工研究所 Solar energy electricity power station bearing type air thermal absorber
WO2012076344A2 (en) * 2010-12-06 2012-06-14 Alstom Technology Ltd Improved solar receiver

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940120A (en) * 2014-05-12 2014-07-23 哈尔滨工业大学 High-temperature solar air heating device
CN103940120B (en) * 2014-05-12 2016-03-02 哈尔滨工业大学 A kind of high temperature solar air heating apparatus
US11643930B2 (en) 2015-04-22 2023-05-09 Trans Astronautica Corporation Optics and structure for space applications
CN106196655A (en) * 2016-09-06 2016-12-07 湖南科技大学 A kind of solar energy thermal-power-generating displacement air heat extractor of many pocket surfaces
CN106196655B (en) * 2016-09-06 2017-12-08 湖南科技大学 A kind of displacement air heat dump of the more pocket surfaces of solar energy thermal-power-generating
US11725513B2 (en) 2018-08-07 2023-08-15 Trans Astronautica Corporation Systems and methods for radiant gas dynamic mining of permafrost for propellant extraction
US12025078B2 (en) 2020-04-27 2024-07-02 Trans Astronautica Corporation Omnivorous solar thermal thruster, cooling systems, and thermal energy transfer in rockets
US11608196B2 (en) 2020-07-22 2023-03-21 Trans Astronautica Corporation Directing light for thermal and power applications in space
US12025006B2 (en) 2020-09-22 2024-07-02 Trans Astronautica Corporation Systems and methods for radiant gas dynamic mining of permafrost
US11748897B1 (en) 2022-06-24 2023-09-05 Trans Astronautica Corporation Optimized matched filter tracking of space objects
CN117821092A (en) * 2024-01-31 2024-04-05 浙江大学 Treatment system for waste fan blades through solar photo-thermal pyrolysis

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