US20140373830A1 - Configuration of the receivers in concentrated solar plants with towers - Google Patents

Configuration of the receivers in concentrated solar plants with towers Download PDF

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Publication number
US20140373830A1
US20140373830A1 US14/359,234 US201214359234A US2014373830A1 US 20140373830 A1 US20140373830 A1 US 20140373830A1 US 201214359234 A US201214359234 A US 201214359234A US 2014373830 A1 US2014373830 A1 US 2014373830A1
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US
United States
Prior art keywords
receiver
receivers
temperature receiver
temperature
configuration
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Abandoned
Application number
US14/359,234
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English (en)
Inventor
José María Méndez Marcos
Maite DIAGO LÓPEZ
Lucía Serrano Gallar
Raúl Navío Gilaberte
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Abengoa Solar New Technologies SA
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Abengoa Solar New Technologies SA
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Application filed by Abengoa Solar New Technologies SA filed Critical Abengoa Solar New Technologies SA
Assigned to ABENGOA SOLAR NEW TECHNOLOGIES, S.A. reassignment ABENGOA SOLAR NEW TECHNOLOGIES, S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DIAGO LOPEZ, MAITE, MARCOS, JOSE MARIA MENDEZ, NAVÍO GILABERTE, RAUL, SERRANO GALLAR, LUCIA
Publication of US20140373830A1 publication Critical patent/US20140373830A1/en
Abandoned legal-status Critical Current

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Classifications

    • F24J2/07—
    • 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
    • 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
    • F01K5/00—Plants characterised by use of means for storing steam in an alkali to increase steam pressure, e.g. of Honigmann or Koenemann type
    • F01K5/02—Plants characterised by use of means for storing steam in an alkali to increase steam pressure, e.g. of Honigmann or Koenemann type used in regenerative installation
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/80—Accommodating differential expansion of solar collector elements
    • 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

Definitions

  • This invention belongs to the field of solar concentration technologies for the production of superheated steam, more specifically to the technology based on central receivers with tower and heliostat field for its application in the generation of electricity.
  • the claimed invention belongs to the tower or central receiver systems (3D). These systems use mirrors with large surfaces (40-125 m 2 per unit) known as heliostats, which are provided with a control system to reflect direct solar radiation on a central receiver located on the upper part of a tower. With this technology, the concentrated solar radiation heats a fluid to temperatures of up to 1000° C. in the receiver, which thermal energy can then be used for the generation of electricity.
  • the medium-temperature receivers are also known as saturated steam receivers or evaporators, and high-temperature receivers are known as superheated steam receivers. A boiler is installed between them.
  • Solar concentration receivers with towers can be external or can be arranged in a cavity located in the upper part of the tower with the purpose of decreasing thermal losses.
  • the configuration must allow the incident power to exceed the radiation and convection losses in size.
  • the temperature reached at the surface is higher than the temperature reached at the saturated steam receivers, due to which the radiation losses are also greater; however, they have the advantage of increasing the efficiency of the thermodynamic cycle, with which these losses would be compensated.
  • Patent WO2009121030A2 proposes different panel and tube configurations with the purpose of absorbing the incident concentrated solar radiation.
  • the majority of the configurations include tubes or panels with transparent parts that are very different than the configuration proposed in this patent and the objectives and advantages to be described in the following sections.
  • Patent US20080078378 proposes a panel configuration which consists in locating the panels of the superheated steam receiver above the panels of the saturated steam receiver.
  • Patent WO2011030331A2 claims several boiler and saturated steam and superheated steam receiver configurations. Configurations with both receivers located in a concentric manner and configurations where the saturated steam receiver and the superheated steam receiver are physically separated.
  • the objective of the present invention is to design a receiver configuration grouping the advantages of using high-temperature steam by solving the existing risks, thereby achieving a greater control of the plant and thereby favoring the stability and durability of the plant and its components.
  • the present invention relates to a configuration of the receiver in concentrated solar plants with towers with a physical separation between the medium-temperature and high-temperature receivers.
  • the medium-temperature receiver is where the evaporation of the heat-carrying fluid takes place, thereby obtaining saturated heat the exit thereof.
  • the superheating of said steam takes place at the high-temperature receiver.
  • a boiler or phase separator is installed between both receivers, which ensures that only steam enters the high-temperature receiver.
  • This system unlike the known state of the art, does not locate the modules of the medium and high-temperature receivers far away from each other; rather, the configuration proposed in the invention comprises one or more independent medium-temperature receivers or one ore more high-temperature receivers located in such a way that the high-temperature receivers are physically located above and slightly in front of the medium-temperature receivers.
  • a series of boilers or separators are located between them, which ensures that the two-phase fluid leaving the medium-temperature receivers enter the high-temperature receivers only as steam.
  • the receiver and panel configuration proposed herein is valid whether they are found inside a cavity or not. If the design of the receiver inside the cavity is used, the thermal losses in the receiver following this configuration, that is to say, with the high-temperature receiver above the medium-temperature receiver, decrease with respect to other configurations with the receiver inside the cavity where the receivers are separated in different cavities.
  • the center of the opening thereof (through which the incident radiation enters) is located below the lower limit of the high-temperature receiver such that the majority of the surface thereof is opposite the inner wall of the cavity.
  • This wall is generally coated with a reflective insulation material.
  • the high-temperature receivers of the invention receive radiation in both faces at the most critical zone thereof (the zone where the peak flows are greater and with the highest metal temperatures), given that they absorb the radiation coming from the heliostat from the front, but that they also receive radiation from behind in the lower part because that the majority of the energy reflected in the upper part of the medium-temperature receivers located behind impinges in this zone.
  • the configuration described herein therefore allows the homogenization of the metal temperature of the lower area of the high-temperature receivers, with the technical advantages that this implies: much lower existing strain and much more uniform deformations in the most critical zone of the high-temperature receivers, thereby achieving an extension in the life of the materials.
  • the heliostats with a smaller spot or projection for example, the heliostats that are closer to the tower
  • the heliostats that are closer to the tower it is convenient for the heliostats with a smaller spot or projection (for example, the heliostats that are closer to the tower) to be focused towards the high-temperature panels in order to have lower overflow losses (given that it is necessary to have a minimum number of heliostats focused towards these panels to provide a certain power to the receiver) and a better control of peak flows in the high-temperature receiver.
  • the heliostats that are closer to the tower will then be focused towards a higher point (the center of the high-temperature receiver) than the rest of the heliostats, due to which the average annual energy they are capable of reflecting will be greater than in other configurations where the high-temperature receiver is not located above the medium-temperature receiver (due to the cosine effect, blockages, and shadows). Therefore, in this type of configurations, the gross energy reaching the solar receivers is also increased.
  • This configuration is such that it allows simplifying the control of the plant, decreasing the power flow requirements thereof (by increasing the efficiency of the receiver) and improving the performance thereof against transient events or during start-ups or shutdowns. And superheated steam is obtained in an efficient and controlled manner in order to guarantee the permanent durability and normal operation of said solar plant in its different applications; production of electricity, production of process heat, production of solar fuels and application to thermochemical processes.
  • FIG. 1 shows a scheme of a tower with three cavities, each containing a medium-temperature receiver and a high-temperature receiver.
  • FIG. 2 shows a two-dimensional view of the proposed configuration and a basic layout for medium and high-temperature receivers inside a cavity.
  • the heat-carrying fluid circulating through the installation is water, such that the medium-temperature receiver ( 3 ) is known as the saturated steam receiver or evaporator and the high-temperature receiver ( 4 ) is known as the superheated steam receiver.
  • the design of the configuration or location of the receivers ( 3 , 4 ) on top of the tower ( 1 ) would be the following: three saturated steam receivers ( 3 ) and three superheated steam receivers ( 4 ), located two by two in three different cavities ( 2 ).
  • the superheated steam receivers ( 4 ) are located above and slightly in front of the saturated steam receivers ( 3 ).
  • the saturated steam receiver ( 3 ) is formed by vertical tubes and the superheated steam receiver ( 4 ) by horizontal or vertical tubes, in both cases with collectors at the fluid inlet and outlet in the receiver.
  • a receiver of each type is placed in each cavity ( 2 ), with several planes for each saturated steam ( 3 ) and superheated steam receiver ( 3 ) (that it to say, the panels form different angles with respect to a certain direction).
  • cavities ( 2 ) are also considered in the same tower ( 1 ), oriented towards different places, with a boiler located above the superheated steam receiver ( 4 ) in each one of the built cavities.
  • the global efficiency of the solar receiver increases with this configuration because the thermal losses are decreased due to the position of the superheated steam receiver ( 4 ) (with the higher wall temperatures) facing in its majority the wall of the cavity ( 2 ) and in consequence the insulation ( 5 ) of said wall, as shown in FIG. 2 .
  • the radiation reaches the receivers from each one of the orientations, and as long as the same only impinges one of the faces of the saturated receivers ( 3 ), the superheated receivers ( 4 ) are illuminated on both faces since part of the radiation reflected by the saturated steam receiver ( 3 ) impinges on the lower zone of the rear face.
  • This zone, the lower zone, is a critical zone, given that the peak flows are greater; therefore, receiving heat from both faces helps to decrease material strain.
  • the annual gross energy received by the receiver increases because some of the heliostats have a higher focus point than the one estimated for other configurations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
  • Cultivation Of Plants (AREA)
US14/359,234 2011-11-29 2012-11-28 Configuration of the receivers in concentrated solar plants with towers Abandoned US20140373830A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ESP201101264 2011-11-29
ES201101264A ES2411282B1 (es) 2011-11-29 2011-11-29 Configuración de los receptores en plantas de concentración solar de torre.
PCT/ES2012/000297 WO2013079744A1 (es) 2011-11-29 2012-11-28 Configuración de los receptores en plantas de concentración solar de torre

Publications (1)

Publication Number Publication Date
US20140373830A1 true US20140373830A1 (en) 2014-12-25

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ID=48534708

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US14/359,234 Abandoned US20140373830A1 (en) 2011-11-29 2012-11-28 Configuration of the receivers in concentrated solar plants with towers

Country Status (10)

Country Link
US (1) US20140373830A1 (es)
EP (1) EP2787302A4 (es)
CN (1) CN104067067A (es)
CL (1) CL2014001396A1 (es)
ES (1) ES2411282B1 (es)
IN (1) IN2014CN04718A (es)
MA (1) MA35721B1 (es)
MX (1) MX2014006455A (es)
WO (1) WO2013079744A1 (es)
ZA (1) ZA201403314B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017035042A1 (en) * 2015-08-24 2017-03-02 Abengoa Solar Llc. Granule curtain solar receiver

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2540918B1 (es) * 2013-12-12 2016-04-20 Abengoa Solar New Technologies S.A. Configuración de receptores solares de torre y torre con dicha configuración

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US4245618A (en) * 1978-10-10 1981-01-20 The Babcock & Wilcox Co. Vapor generator
FR2490331A1 (fr) * 1980-09-16 1982-03-19 Electricite De France Installation de production d'energie mettant en oeuvre un fluide auxiliaire, notamment utilisant le rayonnement solaire
JPS6019414B2 (ja) * 1982-01-29 1985-05-16 株式会社東芝 太陽熱集熱装置
US4700013A (en) * 1985-08-19 1987-10-13 Soule David E Hybrid solar energy generating system
DE10248068B4 (de) * 2002-10-11 2007-09-27 Deutsches Zentrum für Luft- und Raumfahrt e.V. Anlage zur solarthermischen Dampferzeugung und Verfahren zur solarthermischen Erzeugung von Dampf
US20080078378A1 (en) 2006-07-25 2008-04-03 Yanong Zhu Method and apparatus of solar central receiver with boiler and super-heater
ES2547359T3 (es) * 2007-06-07 2015-10-05 Abengoa Solar New Technologies, S.A. Planta de concentración solar para producción de vapor sobrecalentado
WO2009105689A2 (en) * 2008-02-22 2009-08-27 Esolar, Inc. Solar receivers with internal reflections and flux-limiting patterns of reflectivity
CN101539123B (zh) * 2008-03-19 2011-06-29 中国科学院工程热物理研究所 槽塔结合的双级蓄热太阳能热发电系统
US8613278B2 (en) 2008-03-28 2013-12-24 Esolar, Inc. Solar thermal receiver for medium- and high-temperature applications
CN101298943B (zh) * 2008-06-11 2010-06-09 王发明 中高温太阳能利用设备
KR100985591B1 (ko) * 2008-09-19 2010-10-05 한국에너지기술연구원 태양열발전용 자연순환형 태양열 흡수기
US8316843B2 (en) * 2009-02-12 2012-11-27 Babcock Power Services Inc. Arrangement of tubing in solar boiler panels
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017035042A1 (en) * 2015-08-24 2017-03-02 Abengoa Solar Llc. Granule curtain solar receiver

Also Published As

Publication number Publication date
ES2411282A1 (es) 2013-07-05
ES2411282B1 (es) 2014-05-08
CN104067067A (zh) 2014-09-24
MA35721B1 (fr) 2014-12-01
EP2787302A4 (en) 2015-06-24
ZA201403314B (en) 2015-09-30
MX2014006455A (es) 2015-04-14
WO2013079744A1 (es) 2013-06-06
CL2014001396A1 (es) 2014-10-10
EP2787302A1 (en) 2014-10-08
IN2014CN04718A (es) 2015-09-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ABENGOA SOLAR NEW TECHNOLOGIES, S.A., SPAIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MARCOS, JOSE MARIA MENDEZ;DIAGO LOPEZ, MAITE;SERRANO GALLAR, LUCIA;AND OTHERS;REEL/FRAME:033598/0297

Effective date: 20140715

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION