BE895148A - Mirrored solar heat collector - has superheated vapour in closed circuit conducting heat from collector - Google Patents
Mirrored solar heat collector - has superheated vapour in closed circuit conducting heat from collector Download PDFInfo
- Publication number
- BE895148A BE895148A BE1/10654A BE1010654A BE895148A BE 895148 A BE895148 A BE 895148A BE 1/10654 A BE1/10654 A BE 1/10654A BE 1010654 A BE1010654 A BE 1010654A BE 895148 A BE895148 A BE 895148A
- Authority
- BE
- Belgium
- Prior art keywords
- steam
- collector
- solar
- heat
- closed circuit
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
- F03G6/065—Devices for producing mechanical power from solar energy with solar energy concentrating means having a Rankine cycle
-
- 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
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Abstract
A steam cycle for use with solar-powered boilers employs a conventional condensing turbine-generator to produce mechanical power from superheated steam. The condensate is reheated and passed to a steam drum where it mixes with superheated steam from the solar furnace. Satd. steam is produced and is circulated to cool the solar boiler, producing superheated steam which passes to the turbine and to the steam drum as already described. The entire circuit is closed and may be located within the boiler tower at the focus of the solar mirror array. The steam drum may be used as a form of energy storage to even the energy fluctuations arising from changing cloud cover.
Description
Cycle thermodynamique à vapeur pour la réfrigération des centrales solaires
à récepteur central
La présente invention se rapporte à une centrale solaire à récepteur central et plus particulièrement à un cycle thermodynamique à vapeur pour la réfrigération et la transformation d'énergie calorifique en énergie mécanique et électrique dans une telle centrale.
Une centrale solaire à récepteur central se compose d'un champ de miroirs mobiles ou héliostats qui concentrent les rayons du soleil sur un récepteur central situé au sommet d'une tour. La chaleur concentrée sur ce récepteur peut être extraite par une série de fluides possibles : eau, métaux liquides, sels fondus, gaz.
Dans une centrale solaire de ce type, le récepteur central est le composant
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fluctuations rapides de température dues aux variations de l'ensoleillement [passages nuageux].
Si l'on y ajoutait d'autres fluctuations du coté intérieur, dues, par exemple, à l'ébullition et aux variations de niveau de fluide réfrigérant diphasique tel que l'eau, on atteindrait un niveau de chocs thermiques encore plus contraignant.
On peut suivant l'invention, éviter ces chocs thermiques en enlevant la chaleur solaire avec de la vapeur surchauffée.
Dans un cycle pareil, la source de chaleur est utilisée comme surchauffeur; une partie importante de vapeur surchauffée est recyclée et sert à recréer de la vapeur saturée par barbotage dans un ballon de vapeur.
Un avantage supplémentaire de l'invention réside dans le fait que le ballon de vapeur peut servir de stockage d'énergie sous forme d'eau sous pression à la température de saturation.
Une application de l'invention est donnée ci-après à titre nullement limitatif.
En se référant à la figure, celle-ci représente un schema du circuit du caloporteur d'une centrale solaire à récepteur central. La figure montre le récepteur 1 de la centrale refroidi par de la vapeur surchauffée. La vapeur chauffée par le récepteur est circulée à l'aide d'une pompe 2 vers une turbine 3 où elle est détendue, produisant ainsi de l'énergie mécanique. En quittant la turbine, la vapeur est condensée dans le condenseur 4, et l'eau ainsi produite est chauffée dans un réchauffeur 5 avant d'arriver dans un ballon de chauffage 6.
Une partie de la vapeur surchauffée quittant le récepteur 1 est envoyée via le conduit 8 dans le ballon de chauffage 6 où elle recrée de la vapeur saturée par barbottage dans la phase liquide. La vapeur ainsi produite est recireulée par le circulateur 7 dans le récepteur 1 où elle est à nouveau surchauffée.
La description montre que le ballon de chauffage peut être utilisé comme unité de stockage d'énergie.
L'ensemble du circuit thermodynamique étant peu volumineux peut facilement être incorporé dans la tour elle-même.
Revendications
1. Centrale solaire à récepteur central caractérisé en ce que la chaleur
produite est évacuée à l'aide de la vapeur surchauffée.
Thermodynamic steam cycle for the cooling of solar power plants
with central receiver
The present invention relates to a solar power plant with central receiver and more particularly to a thermodynamic steam cycle for refrigeration and the transformation of heat energy into mechanical and electrical energy in such a power plant.
A solar power plant with a central receiver consists of a field of mobile mirrors or heliostats which concentrate the sun's rays on a central receiver located at the top of a tower. The heat concentrated on this receiver can be extracted by a series of possible fluids: water, liquid metals, molten salts, gases.
In a solar power plant of this type, the central receiver is the component
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rapid fluctuations in temperature due to variations in sunshine [cloudy periods].
If we added to it other internal fluctuations, due, for example, to boiling and variations in the level of two-phase refrigerant such as water, we would reach an even more restrictive level of thermal shock.
According to the invention, it is possible to avoid these thermal shocks by removing the solar heat with superheated steam.
In such a cycle, the heat source is used as a superheater; a large part of superheated steam is recycled and used to recreate saturated steam by bubbling through a steam balloon.
An additional advantage of the invention lies in the fact that the vapor balloon can serve as energy storage in the form of pressurized water at the saturation temperature.
An application of the invention is given below by way of non-limiting example.
Referring to the figure, this represents a diagram of the heat transfer circuit of a solar power plant with central receiver. The figure shows the receiver 1 of the control unit cooled by superheated steam. The steam heated by the receiver is circulated using a pump 2 to a turbine 3 where it is expanded, thereby producing mechanical energy. Leaving the turbine, the steam is condensed in the condenser 4, and the water thus produced is heated in a heater 5 before arriving in a heating balloon 6.
Part of the superheated steam leaving the receiver 1 is sent via the conduit 8 to the heating flask 6 where it recreates saturated steam by bubbling through the liquid phase. The steam thus produced is re-circulated by the circulator 7 in the receiver 1 where it is again overheated.
The description shows that the heating cylinder can be used as an energy storage unit.
The whole thermodynamic circuit being not very bulky can easily be incorporated into the tower itself.
Claims
1. Solar power plant with central receiver characterized in that the heat
produced is evacuated using superheated steam.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE1/10654A BE895148A (en) | 1982-11-26 | 1982-11-26 | Mirrored solar heat collector - has superheated vapour in closed circuit conducting heat from collector |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE1/10654A BE895148A (en) | 1982-11-26 | 1982-11-26 | Mirrored solar heat collector - has superheated vapour in closed circuit conducting heat from collector |
| BE895148 | 1982-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE895148A true BE895148A (en) | 1983-03-16 |
Family
ID=25660152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE1/10654A BE895148A (en) | 1982-11-26 | 1982-11-26 | Mirrored solar heat collector - has superheated vapour in closed circuit conducting heat from collector |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE895148A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102762858A (en) * | 2009-12-22 | 2012-10-31 | 西门子公司 | Solar thermal power plant and method for operating a solar thermal power plant |
| CN113819659A (en) * | 2021-10-29 | 2021-12-21 | 西安热工研究院有限公司 | Thermal power generating unit peak regulation system and method for solar-assisted heating of condensed water |
-
1982
- 1982-11-26 BE BE1/10654A patent/BE895148A/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102762858A (en) * | 2009-12-22 | 2012-10-31 | 西门子公司 | Solar thermal power plant and method for operating a solar thermal power plant |
| CN113819659A (en) * | 2021-10-29 | 2021-12-21 | 西安热工研究院有限公司 | Thermal power generating unit peak regulation system and method for solar-assisted heating of condensed water |
| CN113819659B (en) * | 2021-10-29 | 2022-11-25 | 西安热工研究院有限公司 | Thermal power generating unit peak regulation system and method for solar-assisted heating of condensed water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: BELGONUCLEAIRE Effective date: 19861130 |