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WO2012110346A1 - Solar-thermal continuous evaporator having a local reduction in the cross-section on its inlet - Google Patents

Solar-thermal continuous evaporator having a local reduction in the cross-section on its inlet Download PDF

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Publication number
WO2012110346A1
WO2012110346A1 PCT/EP2012/051948 EP2012051948W WO2012110346A1 WO 2012110346 A1 WO2012110346 A1 WO 2012110346A1 EP 2012051948 W EP2012051948 W EP 2012051948W WO 2012110346 A1 WO2012110346 A1 WO 2012110346A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam generator
solar
evaporator
continuous evaporator
thermal power
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.)
Ceased
Application number
PCT/EP2012/051948
Other languages
German (de)
French (fr)
Inventor
Jürgen Birnbaum
Joachim Brodesser
Jan BRÜCKNER
Martin Effert
Joachim Franke
Gerhard Schlund
Tobias Schulze
Frank Thomas
Gerhard Zimmermann
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of WO2012110346A1 publication Critical patent/WO2012110346A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B29/00—Steam boilers of forced-flow type
    • F22B29/06—Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes
    • F22B29/061—Construction of tube walls
    • F22B29/062—Construction of tube walls involving vertically-disposed water tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/12—Forms of water tubes, e.g. of varying cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/62—Component parts or details of steam boilers specially adapted for steam boilers of forced-flow type
    • F22B37/70—Arrangements for distributing water into water tubes
    • F22B37/74—Throttling arrangements for tubes or sets of tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
    • 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 continuous evaporator for a steam generator for a solar thermal power plant with concentrating solar panels and direct evaporation.
  • Solar thermal power plants are an alternative to conventional electricity generation ago ⁇ .
  • One option is the direct evaporation ⁇ fung in parabolic trough collectors or Fresnel collectors.
  • Em solar thermal power plant with parabolic trough collectors or Fresnel collectors and direct evaporation consists of a solar field in which the feedwater is preheated, evaporated and superheated, and from a conventional power plant part in which the thermal energy of Wasserdamp ⁇ fes is converted into electrical energy.
  • solar thermal power plants with direct evaporation so far in the receivers ("Receiver") smooth tubes with the same tube geometry in all evaporator collectors are used. Due to the large pipe length and the total ho ⁇ hen heating the flow of fluid in the vaporization tends ferkollektoren to dynamic instabilities.
  • the solar thermal power plants are operated with parabolic trough collectors or Fresnel collectors in circulation operation.
  • the water supplied to the evaporator collectors is not completely evaporated, but separated in a separation from the steam.
  • the water is then returned to the evaporator via a recirculation pump and the steam flows to the superheater heating surfaces.
  • the invention is thus based on the object to provide a through-running ⁇ erdampfer for a steam generator for a solar thermal power plant with concentrating solar o ⁇ ren and direct evaporation are avoided by the dynamic instabilities. Furthermore, a corresponding steam generator and an improved power plant ⁇ plant to be specified with high thermodynamic efficiency.
  • the directed to a continuous evaporator task he is inventively achieved by specifying a fürvierverdamp fers for a steam generator for a solar thermal power ⁇ plant with direct evaporation, with several parallel collector strands, each with a steam generator tube, wherein at least one steam generator tube in its inlet region a local Has cross-sectional constriction.
  • the invention is based on the He notes that the pressure loss of the two-phase flow and the steam path acts as a restrictor at the outlet of Sys tems ⁇ and destabilizing. The relative contribution of this pressure loss to the system's total pressure drop should be minimized if instability occurs.
  • the proposed measure the pressure drop in the proportion entry ⁇ area of the steam generator, ie in single-phase the water flow increases. With proper positioning and dimensioning of the cross-sectional constriction so instabilities can be safely avoided.
  • a throttle is arranged as a local cross-sectional constrictions in at least ei ⁇ nem steam generator tube.
  • the collector strands comprise concentrating collectors, such as, for example, parabolic trough collectors or Fresnel collectors.
  • the flow steam generator is integrated according to particularly vorteilhaf ⁇ ter embodiment in a steam generator, which in turn is part of a solar thermal power plant with direct evaporation, in particular with concentrating solar collectors.
  • the dynamically stable heating surfaces of the evaporator can also be run in continuous operation, which results in great advantages, in particular for a solar thermal power plant.
  • continuous operation the evaporation end point in ⁇ within the evaporator is flexible.
  • the fluid can already be overheated in the evaporator and thus can be reacted flexibly to fluctuations in the heating of the evaporator and superheater.
  • the figure shows schematically a continuous evaporator 1 for a solar thermal power plant with parabolic trough collectors 2 and direct evaporation.
  • parabolic trough collectors 2 As an alternative to the parabolic trough collectors 2, other concentrating collectors, such as Fresnel collectors can be used.
  • the fürvierverdampfer 1 has a plurality of parallel connected collector strands 3 for the evaporation of feed water, which is supplied via a feedwater line 4.
  • the collector strands 3 are formed from parabolic trough collectors 2 connected in series, through whose absorber tubes 5 a working medium to be heated flows.
  • the series-connected absorber tubes 5, which are optionally connected with spacers 6, form a steam generator tube 7.
  • the steam generator tubes have local cross-sectional constrictions 8, such as throttles 9 at their entry.
  • the throttles 9 ensure virtually over the entire load range of a solar thermal continuous steam generator increased pressure drop in the inlet region of the continuous evaporator 1. In this case, a stable and uniform flow of preheated feedwater through the steam generator tubes 7 is achieved.

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

Abstract

The invention relates to a solar-thermal continuous evaporator (1) for a steam generator for a solar-thermal power plant having direct evaporation, comprising several rows of collectors (3), which are connected in parallel and have in each case a steam generator pipe (7). According to the invention, at least one steam generator pipe (7) has a local reduction in the cross-section (8) on its inlet. The invention further relates to a steam generator and a solar-thermal power plant.

Description

Beschreibung description

Solarthermischer Durchlauf erdampfer mit lokaler Querschnittsverengung am Eintritt Solar thermal run steamer with local cross-sectional narrowing at the entrance

Die Erfindung betrifft einen Durchlaufverdampfer für einen Dampferzeuger für eine solarthermische Kraftwerksanlage mit konzentrierenden solaren Kollektoren und direkter Verdampfung . The invention relates to a continuous evaporator for a steam generator for a solar thermal power plant with concentrating solar panels and direct evaporation.

Solarthermische Kraftwerke stellen eine Alternative zur her¬ kömmlichen Stromerzeugung dar. Zurzeit werden solarthermisch Kraftwerke mit Parabolrinnenkollektoren und indirekter Verdampfung ausgeführt. Eine Option stellt die direkte Verdamp¬ fung in Parabolrinnenkollektoren oder Fresnel-Kollektoren dar . Solar thermal power plants are an alternative to conventional electricity generation ago ¬. Currently, executed by solar thermal power plants with parabolic trough collectors and indirect evaporation. One option is the direct evaporation ¬ fung in parabolic trough collectors or Fresnel collectors.

Em solarthermisches Kraftwerk mit Parabolrinnenkollektoren oder Fresnel-Kollektoren und direkter Verdampfung besteht aus einem Solarfeld, in dem das Speisewasser vorgewärmt, verdampft und überhitzt wird, und aus einem konventionellen Kraftwerksteil, in dem die thermische Energie des Wasserdamp¬ fes in elektrische Energie umgewandelt wird. Bei solarthermischen Kraftwerken mit direkter Verdampfung kommen bislang in den Empfängern ("Receiver") Glattrohre mit der gleichen Rohrgeometrie in allen Verdampferkollektoren zum Einsatz. Aufgrund der großen Rohrlänge und der insgesamt ho¬ hen Beheizung neigt die Strömung des Fluids in den Verdamp- ferkollektoren zu dynamischen Instabilitäten. Em solar thermal power plant with parabolic trough collectors or Fresnel collectors and direct evaporation consists of a solar field in which the feedwater is preheated, evaporated and superheated, and from a conventional power plant part in which the thermal energy of Wasserdamp ¬ fes is converted into electrical energy. In solar thermal power plants with direct evaporation so far in the receivers ("Receiver") smooth tubes with the same tube geometry in all evaporator collectors are used. Due to the large pipe length and the total ho ¬ hen heating the flow of fluid in the vaporization tends ferkollektoren to dynamic instabilities.

Bislang werden die solarthermischen Kraftwerke mit Parabolrinnenkollektoren oder Fresnel-Kollektoren im Umwälzbetrieb gefahren. Das den Verdampferkollektoren zugeführte Wasser wird nicht vollständig verdampft, sondern in einem Abscheide vom Dampf abgetrennt. Das Wasser wird dem Verdampfer anschließend über eine Umwälzpumpe wieder zugeführt und der Dampf strömt zu den Überhitzerheizflächen. Ein Betrieb eines solchen Kraftwerks im reinen Durchlaufbe¬ trieb war bislang nicht erfolgreich, was sich sehr wahrscheinlich auf Instabilitäten zurückführen lässt. So far, the solar thermal power plants are operated with parabolic trough collectors or Fresnel collectors in circulation operation. The water supplied to the evaporator collectors is not completely evaporated, but separated in a separation from the steam. The water is then returned to the evaporator via a recirculation pump and the steam flows to the superheater heating surfaces. An operation of such a power plant in pure Durchlaufbe ¬ drive was so far not successful, which can be attributed to instabilities very likely.

Der Erfindung liegt somit die Aufgabe zugrunde, einen Durch¬ lauf erdampfer für einen Dampferzeuger für eine solarthermische Kraftwerksanlage mit konzentrierenden solaren Kollekto¬ ren und direkter Verdampfung anzugeben, bei dem dynamische Instabilitäten vermieden werden. Des Weiteren soll ein entsprechender Dampferzeuger sowie eine verbesserte Kraftwerks¬ anlage mit hohem thermodynamischem Wirkungsgrad angegeben werden . The invention is thus based on the object to provide a through-running ¬ erdampfer for a steam generator for a solar thermal power plant with concentrating solar Kollekto ¬ ren and direct evaporation are avoided by the dynamic instabilities. Furthermore, a corresponding steam generator and an improved power plant ¬ plant to be specified with high thermodynamic efficiency.

Die auf einen Durchlaufverdampfer gerichtete Aufgabe wird er findungsgemäß gelöst durch die Angabe eines Durchlaufverdamp fers für einen Dampferzeuger für eine solarthermische Kraft¬ werksanlage mit direkter Verdampfung, mit mehreren parallel geschalteten Kollektorsträngen mit je einem Dampferzeuger- rohr, wobei mindestens ein Dampferzeugerrohr in seinem Eintrittsbereich eine lokale Querschnittsverengung aufweist. The directed to a continuous evaporator task he is inventively achieved by specifying a Durchlaufverdamp fers for a steam generator for a solar thermal power ¬ plant with direct evaporation, with several parallel collector strands, each with a steam generator tube, wherein at least one steam generator tube in its inlet region a local Has cross-sectional constriction.

Hinsichtlich der lokalen Querschnittsverengung im Eintrittsbereich der Dampferzeugerrohre geht die Erfindung von der Er kenntnis aus, dass der Druckverlust der Zweiphasenströmung bzw. der Dampfstrecke wie eine Drossel am Austritt des Sys¬ tems wirkt und destabilisierend ist. Der relative Anteil die ses Druckverlustes am Gesamtdruckverlust des Systems ist bei Auftreten einer Instabilität zu minimieren. Durch die vorgeschlagene Maßnahme wird der Druckverlustanteil im Eintritts¬ bereich des Dampferzeugers, d.h. im einphasigen Bereich der Wasserströmung, erhöht. Bei richtiger Positionierung und Dimensionierung der Querschnittsverengung können so Instabilitäten sicher vermieden werden. With regard to the local cross-sectional constriction in the inlet region of the steam generator tubes, the invention is based on the He notes that the pressure loss of the two-phase flow and the steam path acts as a restrictor at the outlet of Sys tems ¬ and destabilizing. The relative contribution of this pressure loss to the system's total pressure drop should be minimized if instability occurs. The proposed measure the pressure drop in the proportion entry ¬ area of the steam generator, ie in single-phase the water flow increases. With proper positioning and dimensioning of the cross-sectional constriction so instabilities can be safely avoided.

In einer vorteilhaften Ausgestaltung der Erfindung ist eine Drossel als lokale Querschnittsverengungen in mindestens ei¬ nem Dampferzeugerrohr angeordnet. Zweckmäßiger Weise umfassen die Kollektorstränge konzentrie¬ rende Kollektoren, wie beispielsweise Parabolrinnenkollekto- ren oder Fresnel-Kollektoren . In an advantageous embodiment of the invention, a throttle is arranged as a local cross-sectional constrictions in at least ei ¬ nem steam generator tube. Expediently, the collector strands comprise concentrating collectors, such as, for example, parabolic trough collectors or Fresnel collectors.

Der Durchlauf erdampfer ist dabei nach besonders vorteilhaf¬ ter Ausgestaltung in einen Dampferzeuger integriert, der wiederum Teil einer solarthermischen Kraftwerksanlage mit direkter Verdampfung, insbesondere mit konzentrierenden solaren Kollektoren, ist. The flow steam generator is integrated according to particularly vorteilhaf ¬ ter embodiment in a steam generator, which in turn is part of a solar thermal power plant with direct evaporation, in particular with concentrating solar collectors.

Die dynamisch stabilen Heizflächen des Verdampfers können auch im Durchlaufbetrieb gefahren werden, wodurch sich insbesondere für ein solarthermisches Kraftwerk große Vorteile er- geben. Im Durchlaufbetrieb ist der Verdampfungsendpunkt in¬ nerhalb des Verdampfers flexibel. Das Fluid kann bereits im Verdampfer überhitzt werden und damit kann auf Schwankungen in der Beheizung von Verdampfer und Überhitzer flexibel reagiert werden. The dynamically stable heating surfaces of the evaporator can also be run in continuous operation, which results in great advantages, in particular for a solar thermal power plant. In continuous operation, the evaporation end point in ¬ within the evaporator is flexible. The fluid can already be overheated in the evaporator and thus can be reacted flexibly to fluctuations in the heating of the evaporator and superheater.

Vorteilhaft beim Betrieb des Verdampfers im Durchlaufbetrieb ist, dass der Eigenbedarf der Anlage reduziert wird, weil die Umwälzpumpe außer Betrieb geht. Die Figur zeigt schematisch einen Durchlaufverdampfer 1 für ein solarthermisches Kraftwerk mit Parabolrinnenkollektoren 2 und direkter Verdampfung. Alternativ zu den Parabolrinnenkollektoren 2 können auch andere konzentrierende Kollektoren, wie Fresnel-Kollektoren verwendet werden. Der Durchlaufver- dampfer 1 weist mehrere parallel geschaltete Kollektorstränge 3 zur Verdampfung von Speisewasser auf, das über eine Speisewasserleitung 4 zugeführt wird. Die Kollektorstränge 3 werden aus hintereinander geschalteten Parabolrinnenkollektoren 2 gebildet, durch deren Absorberrohre 5 ein aufzuheizendes Ar- beitsmedium strömt. Die hintereinander geschalteten Absorberrohre 5, die gegebenenfalls mit Zwischenstücken 6 verbunden sind, bilden ein Dampferzeugerrohr 7. Die Dampferzeugerrohre weisen an ihrem Eintritt lokale Querschnittsverengungen 8, beispielsweise Drosseln 9 auf. An advantage of the operation of the evaporator in continuous operation is that the intrinsic demand of the system is reduced because the circulation pump is out of operation. The figure shows schematically a continuous evaporator 1 for a solar thermal power plant with parabolic trough collectors 2 and direct evaporation. As an alternative to the parabolic trough collectors 2, other concentrating collectors, such as Fresnel collectors can be used. The Durchlaufverdampfer 1 has a plurality of parallel connected collector strands 3 for the evaporation of feed water, which is supplied via a feedwater line 4. The collector strands 3 are formed from parabolic trough collectors 2 connected in series, through whose absorber tubes 5 a working medium to be heated flows. The series-connected absorber tubes 5, which are optionally connected with spacers 6, form a steam generator tube 7. The steam generator tubes have local cross-sectional constrictions 8, such as throttles 9 at their entry.

Die Drosseln 9 gewährleisten praktisch über den gesamten Lastbereich eines solarthermischen Durchlaufdampferzeugers einen erhöhten Druckverlust im Eintrittsbereich des Durchlaufverdampfers 1. Dabei wird ein stabiler und gleichmäßiger Durchfluss des vorgewärmten Speisewassers durch die Dampfer- zeugerrohre 7 erzielt. The throttles 9 ensure virtually over the entire load range of a solar thermal continuous steam generator increased pressure drop in the inlet region of the continuous evaporator 1. In this case, a stable and uniform flow of preheated feedwater through the steam generator tubes 7 is achieved.

Claims

Patentansprüche claims 1. Durchlauf erdampfer (1) für einen Dampferzeuger für eine solarthermische Kraftwerksanlage mit direkter Verdamp¬ fung, mit mehreren parallel geschalteten Kollektorsträngen (3) mit je einem Dampferzeugerrohr (7), dadurch gekennzeichnet, dass mindestens ein Dampferzeugerrohr (7) in seinem Eintrittsbereich eine lokale Querschnittsverengung (8) aufweist. 1. continuous steam generator (1) for a steam generator for a solar thermal power plant with direct Verdamp ¬ tion, with several parallel collector strands (3), each with a steam generator tube (7), characterized in that at least one steam generator tube (7) in its inlet region a having local cross-sectional constriction (8). 2. Durchlaufverdampfer (1) nach Anspruch 1, wobei eine Drossel (9) als lokale Querschnittsverengung (8) im Dampferzeugerrohr (7) angeordnet ist. Second continuous evaporator (1) according to claim 1, wherein a throttle (9) is arranged as a local cross-sectional constriction (8) in the steam generator tube (7). 3. Durchlaufverdampfer (1) nach einem der Ansprüche 1 oder 2, wobei die Kollektorstränge (3) konzentrierende Kollek¬ toren umfassen. 3. continuous evaporator (1) according to any one of claims 1 or 2, wherein the collector strands (3) comprise concentrating Kollek ¬ factors. 4. Durchlaufverdampfer (1) nach einem der Ansprüche 1 bis 3, wobei die Kollektorstränge (3) Parabolrinnenkollektoren umfassen . 4. continuous evaporator (1) according to one of claims 1 to 3, wherein the collector strands (3) include parabolic trough collectors. 5. Durchlaufverdampfer (1) nach einem der Ansprüche 1 bis 3, wobei die Kollektorstränge (3) Fresnel-Kollektoren umfas¬ sen . 5. continuous evaporator (1) according to one of claims 1 to 3, wherein the collector strands (3) Fresnel collectors include ¬ sen. 6. Dampferzeuger mit einem Durchlaufverdampfer (1) nach einem der Ansprüche 1 bis 5. 6. steam generator with a continuous evaporator (1) according to one of claims 1 to 5. 7. Solarthermische Kraftwerksanlage mit direkter Verdampfung mit einem Dampferzeuger nach Anspruch 6. 7. Solar thermal power plant with direct evaporation with a steam generator according to claim 6.
PCT/EP2012/051948 2011-02-17 2012-02-06 Solar-thermal continuous evaporator having a local reduction in the cross-section on its inlet Ceased WO2012110346A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011004268A DE102011004268A1 (en) 2011-02-17 2011-02-17 Solar thermal continuous evaporator with local cross-sectional constriction at the inlet
DE102011004268.7 2011-02-17

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WO2012110346A1 true WO2012110346A1 (en) 2012-08-23

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103712342A (en) * 2013-12-30 2014-04-09 中海阳能源集团股份有限公司 Different-caliber groove type reflector array matched with temperature gradient

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577593A (en) * 1984-11-08 1986-03-25 Combustion Engineering, Inc. Waterwall tube orifice mounting assembly
WO1999001697A1 (en) * 1997-06-30 1999-01-14 Siemens Aktiengesellschaft Waste heat steam generator
DE19914760C1 (en) * 1999-03-31 2000-04-13 Siemens Ag Fossil-fuel through-flow steam generator for power plant
US20090260622A1 (en) * 2008-04-16 2009-10-22 Alstom Technology Ltd Solar steam generator having a standby heat supply system
WO2012028494A2 (en) * 2010-09-03 2012-03-08 Siemens Aktiengesellschaft Solar thermal continuous evaporator heating surface with local cross-sectional narrowing on the inlet thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577593A (en) * 1984-11-08 1986-03-25 Combustion Engineering, Inc. Waterwall tube orifice mounting assembly
WO1999001697A1 (en) * 1997-06-30 1999-01-14 Siemens Aktiengesellschaft Waste heat steam generator
DE19914760C1 (en) * 1999-03-31 2000-04-13 Siemens Ag Fossil-fuel through-flow steam generator for power plant
US20090260622A1 (en) * 2008-04-16 2009-10-22 Alstom Technology Ltd Solar steam generator having a standby heat supply system
WO2012028494A2 (en) * 2010-09-03 2012-03-08 Siemens Aktiengesellschaft Solar thermal continuous evaporator heating surface with local cross-sectional narrowing on the inlet thereof

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