WO2017194350A1 - Récepteur pour installations de production d'énergie solaire - Google Patents

Récepteur pour installations de production d'énergie solaire Download PDF

Info

Publication number
WO2017194350A1
WO2017194350A1 PCT/EP2017/060397 EP2017060397W WO2017194350A1 WO 2017194350 A1 WO2017194350 A1 WO 2017194350A1 EP 2017060397 W EP2017060397 W EP 2017060397W WO 2017194350 A1 WO2017194350 A1 WO 2017194350A1
Authority
WO
WIPO (PCT)
Prior art keywords
channels
channel
absorber
receiver according
projections
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/EP2017/060397
Other languages
German (de)
English (en)
Inventor
Raffaele Capuano
Thomas Fend
Hannes Stadler
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.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsches Zentrum fuer Luft und Raumfahrt eV
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 Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Deutsches Zentrum fuer Luft und Raumfahrt eV
Priority to MA43606A priority Critical patent/MA43606A1/fr
Priority to AU2017264441A priority patent/AU2017264441B2/en
Priority to BR112018073146-3A priority patent/BR112018073146A2/pt
Priority to DE112017002386.6T priority patent/DE112017002386A5/de
Publication of WO2017194350A1 publication Critical patent/WO2017194350A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/10—Details of absorbing elements characterised by the absorbing material
    • F24S70/16—Details of absorbing elements characterised by the absorbing material made of ceramic; made of concrete; made of natural stone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/80—Solar heat collectors using working fluids comprising porous material or permeable masses directly contacting the working fluids
    • 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
    • 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
    • Y02E10/44—Heat exchange systems

Definitions

  • the invention relates to a receiver for solar energy generation plants according to the preamble of claim 1.
  • a solar receiver which has a plurality of absorber modules.
  • the absorber module contains an absorber body facing the incident solar radiation, which is porous. Through the absorber body air is sucked in, which heats up when passing through the absorber body.
  • the receiver is suitable for large power generation plants, where numerous heliostats are arranged in a field, which reflect the solar radiation on the receiver.
  • a high radiation concentration is produced at the receiver, which results in temperatures in the range of up to 1100 ° C. at the absorber module.
  • a support structure which carries numerous absorber modules.
  • Each absorber module consists of a ceramic absorber head and an absorber body held by the absorber head.
  • the absorber head is adjoined by a hot air duct structure, for example a hot air duct.
  • the hot air is used for the operation of work machines, such as turbines for power generators.
  • From DE 197 40 644 C2 an absorber body made of ceramic material is known, in which pass over several channels in the hot air duct. In the previously known absorber body, a relatively high porosity has already been realized.
  • the quality of the heat transfer is further determined by the "Extinction Factor", which indicates the attenuation of the radiation as it passes through the absorber body and is therefore a measure of the absorption of the radiation.
  • the Extinction Factor and the porosity are largely coupled and in opposite directions.
  • the invention is defined by the features of claim 1.
  • the receiver according to the invention for solar energy recovery systems has a plurality of absorber modules which can be irradiated with solar radiation, the absorber modules each containing a front absorber body and a hot air duct.
  • the absorber modules are each of process air flows through, which is supplied as a heat transfer medium to a consumer.
  • the absorber bodies each have a structure with a plurality of extending in a flow direction channels, which merge into the hot air duct, wherein the channels are each bounded by channel walls.
  • the invention is characterized in that the channels adjoin an inlet region which is arranged upstream of the channels with respect to the flow direction, wherein protrusions projecting from the channel walls are arranged in the inlet region.
  • the solar radiation impinging on the absorber modules and the process air initially reaches an inlet region which is formed by a multiplicity of projections which preferably extend upstream in the flow direction.
  • the channels are formed, which are limited by the channel walls. Due to the projections in the inlet region, the latter has a higher porosity and thus a lower extinction factor than the region of the absorber modules in which the channels extend.
  • the receiver according to the invention thus offers absorber modules which have a changing extinction factor downstream in the flow direction. In the inlet area, which faces the irradiation side, a smaller proportion of solar radiation is absorbed, so that in this area a lower temperature, compared with conventional absorbers, is achieved.
  • the solar radiation impinging on the absorber modules passes into the porous inlet area and then into the channels in which the solar radiation is almost completely absorbed. High temperatures of the absorber modules thus arise only within the channels.
  • the projections may protrude in a pin-like or pronged manner from the channel walls in the direction of the incident solar radiation. It is preferably provided that the channels extend in a straight line and in the direction of the hot air duct. The channels are preferably parallel. Such a geometry can be realized with relatively little effort in terms of production technology, wherein at the same time it is ensured by the straight course of the channels that the process air can flow in an advantageous manner and with low pressure loss through the absorber modules.
  • the projections taper upstream in their width direction.
  • width direction is meant a direction orthogonal to the flow direction.
  • the maximum width of the projections can be at most half the channel width of a channel.
  • the maximum width can sit in a projection, for example, in its base.
  • the channel wall of a channel may have a wall thickness that corresponds to the wall thickness of one of the projections. In other words, projections have the same wall thickness as the channel wall on which the projections are arranged. This simplifies manufacture.
  • At least one of the projections is arranged at an intersection of channel walls, wherein the projection has a base adapted to the crossing, which merges into a tip.
  • the tip may for example be square, preferably square.
  • the projections thus partially have a cross-shaped cross-section and go over each in a tip. Such a configuration offers a high stability of the projections.
  • the channels may have a square cross-section.
  • at least a portion of the channels are symmetrical, i. they have an identical structure.
  • the channels preferably each have a first and a second channel section, wherein the second channel section adjoins the first channel section in the flow direction downstream. It can be provided that the second channel section is arranged offset from the first channel section. In other words, the second channel sections are nested to the first channel sections. As a result, the turbulence of the process air flowing through the channels is increased, so that the proportion of convective heat transfer from the absorber modules to the process air is improved.
  • the channels can be subdivided into several subchannels.
  • the stability of the channels and subchannels is increased, so that the channel walls can be made smaller in thickness than in conventional channels.
  • the formed by the subchannels Flow cross-section greater than conventional channels.
  • the absorber modules thus have a higher porosity in the section in which the channels are subdivided into subchannels than conventional channel absorbers.
  • the extinction factor in this area is greater than in conventional channels.
  • a partition or partition walls are arranged between the subchannels of a channel. Partitions increase the stability in an advantageous manner.
  • the channels each have a first and a second channel section, wherein the second channel section adjoins the first channel section in the flow direction downstream and wherein there is a subdivision into sub-channels in the first channel section.
  • the absorber bodies initially have an inlet region in the flow direction, to which a first channel section adjoins.
  • the channels are formed by the projections have gone into complete channel walls, the channels are divided, for example, by the provision of partitions in sub-channels.
  • the first channel section is adjoined by a second channel section, in which the channels are no longer subdivided into subchannels but have thicker channel walls.
  • portions can be formed in the flow direction in which the porosity decreases.
  • FIG. 1 is a schematic view of a solar energy recovery system with a receiver according to the invention
  • FIG. 2 shows a schematic side view of an absorber module according to the invention
  • a perspective view of several channels of an absorber body of an absorber module according to the invention is shown.
  • FIG. 4 shows a view into a plurality of channels of an absorber body of an absorber module according to the invention from the irradiation side.
  • a solar energy recovery system 100 is shown schematically. Sunlight is reflected by heliostats 110 of a heliostat field 120 on the receiver 1 according to the invention.
  • the receiver 1 is designed as an open volumetric receiver, wherein air from the area in front of the front side la of the receiver is sucked in and forms the process air.
  • the process air is heated by the receiver 1 and fed via hot air lines 130 to a consumer.
  • the consumer may be, for example, a steam generator 140 with a conventional steam cycle 150 or a heat storage 160.
  • an air return system 170 the cooled process air is returned to the receiver.
  • an absorber module of a receiver is shown schematically in a side view.
  • the absorber module 11 has an absorber head 13 and a front absorber body 17 accommodated in the absorber head 13 on, which is irradiated with concentrated solar radiation.
  • the absorber body 17 may for example consist of a high temperature resistant ceramic.
  • the front surface 17a of the absorber body 17 forms the radiation-receiving surface. By the absorber body 17 ambient air is sucked in, which heats up when passing through the hot absorber body 17.
  • the absorber head 13 opens into a hot air duct 19.
  • the absorber body has a plurality of channels 21, which merge into the hot air duct 19.
  • a detail comprising a plurality of channels 21 is shown schematically in a perspective view in FIG. 3 and in a schematic top view in FIG. 4, on which side the front surface 17a forms.
  • the design of the channels 21 is described by means of FIGS. 3 and 4 explained using one of four channels 21.
  • the channels 21 of an absorber body 17 of an absorber module 11 may be formed all or partially like the channel 21 shown in FIGS. 3 and 4.
  • the channels 21 are parallel and square, in the embodiment shown in the figures square, formed.
  • the channels 21 each have a first channel portion 21a and a second channel portion 21b.
  • the channels 21 are bounded by channel walls 23.
  • the second channel portions 21b of the channels 21 are offset from the first channel portions 21a.
  • the second channel sections 21b are arranged nested to the first channel sections 21a.
  • the absorber modules 11 have an inlet region 25, to which the channels 21 connect downstream in the flow direction.
  • the flow direction is shown in Fig. 3 by an arrow.
  • the inlet region is formed by projections 27 that project upstream from the channel walls 23 in the flow direction.
  • the projections 27 are formed pin-like or tine-like.
  • FIG. 3 shows a section of four channels, with a section through the projections 27 and channel walls 23 in the first channel region 21a.
  • the projections are arranged at intersections 23a of the channel walls 23 and have a cross-shaped base 27a adapted to the intersection 23a.
  • the projections 27 taper upstream in the flow direction and converge towards a square tip 27b.
  • the channel wall 23 may have a wall thickness Dl which corresponds to the wall thickness D2 of one of the projections 27. In other words, there is no wall thickness jump between the projections 27 and the channel walls.
  • the inventive structure of the channels 21 of the absorber modules with upstream inlet region 25 with projections 27 allows a change in the porosity and thus the extinction factor within the absorber modules in the flow direction.
  • the incident solar radiation is strongly absorbed only in an inner region of the absorber modules and the temperature of the absorber modules in the region of the front surface 17a is kept low, whereby radiation losses are avoided.

Landscapes

  • 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)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Photovoltaic Devices (AREA)
  • Central Air Conditioning (AREA)

Abstract

L'invention concerne un récepteur pour des installations de production d'énergie solaire (100), le récepteur comprenant plusieurs modules absorbeurs (11) qui peuvent être exposés au rayonnement solaire, les modules absorbeurs (11) contenant respectivement un corps absorbeur (17) frontal et un conduit d'air chaud (19), et les modules absorbeurs (11) étant traversés respectivement par de l'air de traitement qui peut être acheminé à un consommateur (150) en tant que milieu caloporteur, les corps absorbeurs (17) comprenant respectivement une structure dotée de plusieurs conduits (21) s'étendant dans une direction d'écoulement, lesquels se prolongent par le conduit d'air chaud (19), les conduits (21) étant respectivement délimités par des parois de conduit (23), les conduits (21) se raccordant à une zone d'entrée (25) qui est disposée en amont des conduits (21) par rapport à la direction d'écoulement, des saillies (27) faisant saillie à partir des parois de conduit (23) étant disposées dans la zone d'entrée (25).
PCT/EP2017/060397 2016-05-12 2017-05-02 Récepteur pour installations de production d'énergie solaire Ceased WO2017194350A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
MA43606A MA43606A1 (fr) 2016-05-12 2017-05-02 Récepteur pour installations de production d'énergie solaire
AU2017264441A AU2017264441B2 (en) 2016-05-12 2017-05-02 Receiver for solar power plants
BR112018073146-3A BR112018073146A2 (pt) 2016-05-12 2017-05-02 receptor para usinas de energia solar
DE112017002386.6T DE112017002386A5 (de) 2016-05-12 2017-05-02 Receiver für Solarenergiegewinnungsanlagen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016003017.6 2016-05-12
DE202016003017.6U DE202016003017U1 (de) 2016-05-12 2016-05-12 Receiver für Solarenergiegewinnungsanlagen

Publications (1)

Publication Number Publication Date
WO2017194350A1 true WO2017194350A1 (fr) 2017-11-16

Family

ID=58672581

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/060397 Ceased WO2017194350A1 (fr) 2016-05-12 2017-05-02 Récepteur pour installations de production d'énergie solaire

Country Status (5)

Country Link
AU (1) AU2017264441B2 (fr)
BR (1) BR112018073146A2 (fr)
DE (2) DE202016003017U1 (fr)
MA (1) MA43606A1 (fr)
WO (1) WO2017194350A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19744541C2 (de) 1997-10-09 2001-05-03 Deutsch Zentr Luft & Raumfahrt Solarempfänger
DE19740644C2 (de) 1997-09-16 2001-05-17 Deutsch Zentr Luft & Raumfahrt Solarempfänger mit mindestens einem porösen Absorberkörper aus Keramikmaterial
US20120017889A1 (en) * 2009-01-30 2012-01-26 Udo Hack Method for the production of a ceramic absorber member for solar radiation, and absorber member
DE202014009357U1 (de) * 2014-11-25 2016-02-26 Deutsches Zentrum für Luft- und Raumfahrt e.V. Receiver für Solarenergiegewinnungsanlagen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740644C2 (de) 1997-09-16 2001-05-17 Deutsch Zentr Luft & Raumfahrt Solarempfänger mit mindestens einem porösen Absorberkörper aus Keramikmaterial
DE19744541C2 (de) 1997-10-09 2001-05-03 Deutsch Zentr Luft & Raumfahrt Solarempfänger
US20120017889A1 (en) * 2009-01-30 2012-01-26 Udo Hack Method for the production of a ceramic absorber member for solar radiation, and absorber member
DE202014009357U1 (de) * 2014-11-25 2016-02-26 Deutsches Zentrum für Luft- und Raumfahrt e.V. Receiver für Solarenergiegewinnungsanlagen

Also Published As

Publication number Publication date
BR112018073146A2 (pt) 2019-03-12
MA43606A1 (fr) 2020-05-29
DE202016003017U1 (de) 2017-08-16
DE112017002386A5 (de) 2019-01-24
AU2017264441B2 (en) 2023-02-02
AU2017264441A1 (en) 2018-11-15

Similar Documents

Publication Publication Date Title
DE2631196C3 (de) Sonnenbeheizter Kessel
DE2715504A1 (de) Solarenergiesammler
WO2012055056A2 (fr) Tube absorbeur pour un collecteur cylindro-parabolique
DE2925272A1 (de) Waermetauscher
EP2622282B1 (fr) Récepteur pour des installations d'énergie solaire
WO2018205043A1 (fr) Procédé pour faire fonctionner un récepteur et récepteur pour mettre en œuvre le procédé
DE102010061186B4 (de) Zwangdurchlaufdampferzeuger mit Wandheizfläche und Verfahren zu dessen Betrieb
EP3622227A1 (fr) Procédé pour faire fonctionner un récepteur et récepteur pour mettre en uvre le procédé
WO2017194350A1 (fr) Récepteur pour installations de production d'énergie solaire
DE102016208215B4 (de) Receiver für Solarenergiegewinnungsanlagen
DE102013221887B3 (de) Receiver für Solarenergiegewinnungsanlagen
DE102016203102B4 (de) Receiver für Solarenergiegewinnungsanlagen
DE102016121654B3 (de) Receiver mit Absorbermodulen
DE102013221889B4 (de) Receiver für Solarenergiegewinnungsanlagen
DE102009026546B4 (de) Sonnenkollektor
EP1570208B1 (fr) Procede de fabrication d'un generateur de vapeur en continu et generateur de vapeur en continu
DE102015215457A1 (de) Receiver für Solarenergiegewinnungsanlagen
EP3790842B1 (fr) Réacteur-récepteur solaire
EP2045544A2 (fr) Echangeur thermique, notamment absorbeur pour collecteurs solaires thermiques
DE7720646U1 (de) Sonnenkollektor
DE202010007512U1 (de) Vorrichtung zur solarthermischen Erzeugung von Prozesswärme
DE102010022517B4 (de) Verfahren und Vorrichtung zur solarthermischen Erzeugung von Prozesswärme
EP3830495B1 (fr) Procédé d'isolation d'une unité de traitement et unité de traitement dotée d'une zone d'isolation
CH715527A2 (de) Verfahren zum Betrieb eines Receivers und Receiver zur Ausführung des Verfahrens.
DE102011017276A1 (de) Absorberrohr für Kollektoren und/oder Reflektoren eines solarthermischen Kraftwerks

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2017264441

Country of ref document: AU

Date of ref document: 20170502

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: DZP2018000561

Country of ref document: DZ

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112018073146

Country of ref document: BR

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17721998

Country of ref document: EP

Kind code of ref document: A1

REG Reference to national code

Ref country code: DE

Ref legal event code: R225

Ref document number: 112017002386

Country of ref document: DE

ENP Entry into the national phase

Ref document number: 112018073146

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20181109

122 Ep: pct application non-entry in european phase

Ref document number: 17721998

Country of ref document: EP

Kind code of ref document: A1