EP2567090A2 - Partie solaire d'une centrale héliothermique et centrale héliothermique présentant des surfaces de collecteurs solaires pour agent caloporteur et agent de travail - Google Patents

Partie solaire d'une centrale héliothermique et centrale héliothermique présentant des surfaces de collecteurs solaires pour agent caloporteur et agent de travail

Info

Publication number
EP2567090A2
EP2567090A2 EP11719218A EP11719218A EP2567090A2 EP 2567090 A2 EP2567090 A2 EP 2567090A2 EP 11719218 A EP11719218 A EP 11719218A EP 11719218 A EP11719218 A EP 11719218A EP 2567090 A2 EP2567090 A2 EP 2567090A2
Authority
EP
European Patent Office
Prior art keywords
power plant
solar
working medium
heat transfer
solar collector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11719218A
Other languages
German (de)
English (en)
Inventor
Jan BRÜCKNER
Joachim Franke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2567090A2 publication Critical patent/EP2567090A2/fr
Withdrawn legal-status Critical Current

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
    • F03G6/067—Binary cycle plants where the fluid from the solar collector heats the working fluid via a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • F01K7/22—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines having inter-stage steam heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/006—Methods of steam generation characterised by form of heating method using solar heat
    • 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

Definitions

  • the invention relates to a solar power plant part of such a ⁇ larthermischen power plant with solar collector for heat transfer medium and the working medium and a solar thermal power plant.
  • the invention further relates to a method for operating a solar thermal power plant.
  • Solar thermal power plants represent an alternative to conventional power generation. Solar thermal power plants with parabolic trough collectors and indirect evaporation are currently being implemented.
  • the heat transfer medium is heated in the parabolic trough collectors.
  • the hot heat transfer medium releases its energy in a downstream heat exchanger (steam generator) to the feed water coming from the condenser.
  • the generated steam is fed to a steam turbine.
  • thermal oil As a heat transfer medium, for example, thermal oil is used.
  • the maximum permissible temperature of this thermal oil is approx. 400 ° C. Higher temperatures would decompose the oil.
  • the maximum high pressure or hot reheater temperature of the generated steam is not above about 390 ° C.
  • the pressure of the generated steam is 100 to 120 bar.
  • the object of the invention is to significantly increase the comparatively low efficiencies of said device or said method. According to the invention, this object is achieved by the Vorrich ⁇ device according to claim 1, the apparatus according to claim 8 and the method according to claim 12. Advantageous developments of the invention are defined in the respective dependent claims.
  • a solar power plant part of a solar thermal power plant with a first solar collector surface, which is arranged in a section of a heat ⁇ carrier medium cycle, a second solar collector surface as a superheater for a working medium, the output of technical work in a turbine is relaxable, is arranged in the solar power plant part.
  • the invention is therefore based on the idea to apply a part of the total solar collector surface with a heat transfer medium and to use this for preheating, evaporation and slight overheating.
  • the remaining portion of the total solar collector area is directly flowed through by the working medium, which can be heated to higher temperatures (e.g., 600 ° C) than the heat transfer medium.
  • the solar power plant part comprises a third solar collector surface as a reheater for the working medium.
  • the steam can be reheated to higher temperatures than when exchanging heat with a heat transfer medium of lower temperature.
  • the heat transfer medium is a thermal oil.
  • thermal oil to water is the ⁇ we sentlich higher boiling point.
  • a temperature of over 300 ° C can be achieved without problems with steam conditions and increased pressures play a role. It is also useful if the working fluid contains water.
  • the solar collector surfaces are parabolic trough collector surfaces.
  • Parabolic trough technology is currently the most cost-effective variant for solar collector surfaces.
  • the solar collector surfaces Fresnel collector surfaces.
  • the advantages of the Fresnel technology compared to the parabolic trough technology lie in the simple structure of the Fresnel collector and in the possi ⁇ ability to use the space below the collector.
  • a further advantage lies in the piping, because through the pipe length of several hundred meters, a flow deflection can be drawn, so that pressure losses in Fresnel collectors are comparatively low.
  • the first solar collector surface comprises parabolic trough or Fresnel collectors and the second solar collector surface comprises a tower heating surface.
  • Parabolic trough and Fres ⁇ nelkollektoren are usually acted upon by heat transfer medium and can be reliably used up to pressures of 20 to 30 bar. They are therefore suitable as the first Clarkollektorflä ⁇ chen.
  • the design of parabolic trough and Fresnel collectors for the high pressures of the working medium can lead to mechanical problems.
  • the second solar collector surface comprises a solar tower, which is fixed and whose tower heating surface is illuminated by tracking flat mirrors.
  • the third solar collector surface also comprises a tower heating surface.
  • Power plant comprising a solar power plant part, ei ⁇ nen working medium circuit in which a steam turbine is arranged ⁇ , a first heat exchanger for the transmission of Heat from the heat transfer medium circuit to the working medium circuit, wherein the first heat exchanger is connected on the primary side in the heat transfer medium circuit and the secondary side in the Ar ⁇ beitsmedium cycle, wherein the superheater switched in the flow direction of the working medium behind the first heat exchanger in the working medium circuit is.
  • the temperature levels are adapted to the respective requirements ⁇ .
  • the temperature upwards limited heat transfer medium circuit ensures heat exchange for heating and evaporation of the working fluid, which is then overheated in the superheater itself to even higher temperatures.
  • the steam turbine comprises a high pressure stage and the high pressure stage a reheater is nachge ⁇ switched.
  • a better energy utilization of the generated steam can be done.
  • Another heat exchanger which is connected downstream of the first heat exchanger in the flow direction of a heat transfer medium and upstream of the first heat exchanger in the flow direction of a working medium, is also advantageous since the residual heat of the heat transfer medium can be used to preheat the working medium.
  • a solar thermal power plant comprising a solar power ⁇ working part with a first and a second solar collector surface and a conventional power plant part with a turbine, flows through a heat transfer medium, the first solar collector surface and heated and evaporated heat exchange a working medium, said the generated steam flows through a second solar collector surface and is subsequently fed to a turbine. It is advantageous if, in a high-pressure part of the turbine, relaxed steam flows through a third solar collector surface for reheating purposes.
  • Figure 1 is a solar thermal power plant according to the prior art
  • the solar thermal power plant 1 comprises a solar field 2, in which the solar radiation is concentrated and converted into heat energy.
  • the solar panel 2 may have at ⁇ game as parabolic trough collectors or Fresnel collectors. Concentrated solar radiation is emitted to a heat transfer medium, for example thermal oil, which has a much higher boiling point than water, so that temperatures of 300-400 ° C can be achieved.
  • the superheated steam is in the so-called conventional part of the solar thermal power plant 1 via a Frischdampflei ⁇ device 11 in a steam turbine 12 as a working medium Weglei ⁇ tet.
  • the steam turbine 12 comprises a high-pressure stage, which is designed as a separate high-pressure turbine part 13 and a com ⁇ combined medium / low pressure turbine part 14 for the middle-pressure stage and the low-pressure stage.
  • the sub-turbines 13, 14 drive a generator 15.
  • the working medium is expanded and liquefied on closing ⁇ in a condenser 16.
  • a feed water pump 17 pumps the liquefied working medium back to the heat exchangers 7, 8, 9, whereby the circuit 18 of the working medium is closed.
  • a part of the solar field 2 extracted heat transfer medium is supplied via the pipe 19 of the primary side of a heat exchanger 20 and the partially compressed after the high-pressure stage 13 steam over a
  • FIG. 2 shows a solar thermal power plant 22 according to the invention.
  • the inventive solar power plant part 23 um ⁇ now no longer holds a solar field with a single, large solar collector surface, but different solar collector surfaces 24, 25, 26, wherein, for example, the first solar collector surface 24 comprises parabolic trough or Fresnel collectors and the second and third solar collector surfaces 25, 26 comprise tower heating surfaces which are illuminated by flat mirrors (not shown).
  • the heat transfer medium is transported by means of a thermal oil pump 6 from the first solar collector surface 24 to heat exchangers 7 and 8, in which the working medium heated 7, evaporates 8 and the steam generated may be slightly overheated, with the heat transfer medium cools again.
  • the cooled heat transfer medium is pumped back to the first solar collector surface 24 in the solar power plant part 23, so that here again results in a closed heat transfer medium circuit 29.
  • the steam thus generated then flows through the second solar collector surface 25 and is thereby overheated.
  • the overheated vapor is about ⁇ in the high-pressure part turbine via the steam line 11 13 of the steam turbine 12 taken as a working medium.
  • the steam is supplied via the steam line 30 to the third solar collector surface 26.
  • the superheated steam is then fed into the medium / low pressure turbine part 14, there relaxed and then liquefied in Kon ⁇ capacitor 16.
  • the feedwater pump 17 pumps the liquefied working medium, ie the water, back to the heat exchangers 7 and 8, whereby the circuit 31 of the working medium is closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

L'invention concerne une partie solaire (23) d'une centrale héliothermique (22), comportant une première surface de collecteur solaire (24) disposée dans une section d'un circuit d'agent caloporteur (29). Selon l'invention, une deuxième surface de collecteur solaire (25) est disposée dans la partie solaire (23) et fonctionne comme surchauffeur pour un agent de travail qui peut se détendre et fournir un travail technique dans une turbine (12). L'invention porte également sur une centrale héliothermique (22) comprenant une partie solaire (23), un circuit d'agent de travail (31) dans lequel est disposée une turbine à vapeur (12), un premier échangeur thermique (8) destiné au transfert de chaleur du circuit d'agent caloporteur (29) au circuit d'agent de travail (31), le premier échangeur thermique (8) étant couplé côté primaire au circuit d'agent caloporteur (29) et côté secondaire au circuit d'agent de travail (31), la deuxième surface de collecteur solaire (25) étant couplée, en tant que surchauffeur, au circuit d'agent de travail (31) derrière le premier échangeur thermique (8) dans le sens d'écoulement de l'agent de travail. L'invention porte également sur un procédé destiné à faire fonctionner une centrale héliothermique (22).
EP11719218A 2010-05-06 2011-04-28 Partie solaire d'une centrale héliothermique et centrale héliothermique présentant des surfaces de collecteurs solaires pour agent caloporteur et agent de travail Withdrawn EP2567090A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010028692 2010-05-06
DE102010027226A DE102010027226A1 (de) 2010-05-06 2010-07-15 Solarer Kraftwerksteil einer solarthermischen Kraftwerksanlage und solarthermische Kraftwerksanlage mit Sonnenkollektorflächen für Wärmeträgermedium und Arbeismedium
PCT/EP2011/056711 WO2011138215A2 (fr) 2010-05-06 2011-04-28 Partie solaire d'une centrale héliothermique et centrale héliothermique présentant des surfaces de collecteurs solaires pour agent caloporteur et agent de travail

Publications (1)

Publication Number Publication Date
EP2567090A2 true EP2567090A2 (fr) 2013-03-13

Family

ID=44626320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11719218A Withdrawn EP2567090A2 (fr) 2010-05-06 2011-04-28 Partie solaire d'une centrale héliothermique et centrale héliothermique présentant des surfaces de collecteurs solaires pour agent caloporteur et agent de travail

Country Status (5)

Country Link
US (1) US20130047611A1 (fr)
EP (1) EP2567090A2 (fr)
CN (1) CN102884317A (fr)
DE (1) DE102010027226A1 (fr)
WO (1) WO2011138215A2 (fr)

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WO2012050788A2 (fr) * 2010-09-30 2012-04-19 Dow Global Technologies Llc Processus de production de vapeur surchauffée à partir d'une centrale à énergie solaire à concentration
DE102012206466A1 (de) * 2012-04-19 2013-10-24 Siemens Aktiengesellschaft Verfahren und Vorrichtung zum Betrieb eines solarthermischen Kraftwerks
EP2861908B1 (fr) * 2012-05-10 2020-12-23 Stamicarbon B.V. acting under the name of MT Innovation Center Procédé de modification d'une centrale thermique solaire fonctionnant sur une technologie à base d'huile classique dans une centrale thermique solaire hybride et une telle installation d'énergie thermique solaire hybride
JP2013242070A (ja) * 2012-05-18 2013-12-05 Toshiba Corp 蒸気発生システム
EP2667028A1 (fr) * 2012-05-25 2013-11-27 Alstom Technology Ltd Installation solaire à cycle de Rankine à vapeur et procédé de fonctionnement de telles installations
CN103573569A (zh) * 2012-07-25 2014-02-12 中国电力工程顾问集团华北电力设计院工程有限公司 槽式与菲涅尔太阳能热混合发电系统
US9829217B2 (en) * 2013-04-22 2017-11-28 The Babcock & Wilcox Company Concentrated solar power solids-based system
WO2015003898A1 (fr) 2013-07-12 2015-01-15 Siemens Aktiengesellschaft Système de préchauffage et procédé utilisant un tel système de préchauffage
ES2434665B2 (es) * 2013-07-22 2014-04-22 Universidad Politécnica de Madrid Central termosolar de concentración con dos fluidos en el receptor y en el almacenamiento
WO2017078653A1 (fr) 2015-11-02 2017-05-11 Lukashenko Gennadii Centrale électrique
ITUA20162945A1 (it) * 2016-04-27 2017-10-27 Agenzia Naz Per Le Nuove Tecnologie Lenergia E Lo Sviluppo Economico Sostenibile Enea Gruppo integrato per la produzione di calore di processo ad alta temperatura
CN111173697B (zh) * 2020-03-05 2024-03-08 广东海洋大学 一种太阳能塔槽联合发电系统
CN115288954A (zh) * 2022-08-17 2022-11-04 西安热工研究院有限公司 能量梯级利用的光煤互补汽轮机系统及发电系统

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Also Published As

Publication number Publication date
CN102884317A (zh) 2013-01-16
US20130047611A1 (en) 2013-02-28
DE102010027226A1 (de) 2011-11-10
WO2011138215A2 (fr) 2011-11-10
WO2011138215A3 (fr) 2012-03-15

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