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EP0856125A2 - Procede et dispositif de production de vapeur solaire - Google Patents

Procede et dispositif de production de vapeur solaire

Info

Publication number
EP0856125A2
EP0856125A2 EP96945345A EP96945345A EP0856125A2 EP 0856125 A2 EP0856125 A2 EP 0856125A2 EP 96945345 A EP96945345 A EP 96945345A EP 96945345 A EP96945345 A EP 96945345A EP 0856125 A2 EP0856125 A2 EP 0856125A2
Authority
EP
European Patent Office
Prior art keywords
absorber
water
steam
strand
solar
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
EP96945345A
Other languages
German (de)
English (en)
Inventor
Hans-Christian TRÄNKENSCHUH
Reinhard Rippel
Hans-Jürgen CIRKEL
Wolfgang Köhler
Wolfgang Kastner
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 EP0856125A2 publication Critical patent/EP0856125A2/fr
Ceased 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
    • 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
    • F03G6/061—Parabolic linear or trough concentrators
    • 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
    • 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
    • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Definitions

  • the invention relates to a method and a device for generating solar steam.
  • the collector array comprises a larger number of collectors and absorber branches.
  • the solar radiation concentrated by the collectors on the absorber strands is absorbed in the absorber strands.
  • the medium to be evaporated is evaporated directly in the absorber strands.
  • the invention is based on the object of specifying a method for generating solar steam in which the risk of overheating in the absorber strands is avoided and at the same time there is a significant cost reduction in the collector field.
  • the invention is also based on the object of specifying a device for carrying out the method.
  • the first-mentioned object is achieved according to the invention by a method for generating solar steam with at least at least one collector and at least one absorber line carrying water and / or steam, water being additionally supplied to the absorber line in such a way that wet steam is present at an outlet of the absorber line.
  • the second-mentioned object is achieved according to the invention by a device for generating solar steam, which comprises at least one collector and at least one water and / or steam-carrying absorber strand, means for additional supply of water being provided such that at an outlet of the absorber strand Wet steam is present.
  • the generation and use of wet steam as solar steam prevents the absorber strand from overheating.
  • the wet steam is composed of the two components water and water vapor. This significantly reduces the temperature in the absorber line. As a result, the requirements regarding the temperature resistance of the components that make up the absorber strand decrease.
  • the absorber coating consequently works in a temperature range which guarantees an optimal efficiency for the absorption of the solar radiation. Radiation losses due to temperature retroreflection are thus avoided.
  • the lower operating temperature ensures a longer service life of the individual components. This leads to a considerable saving in costs for the entire collector array.
  • At least the same amount of water is preferably fed in at an inlet of the absorber strand and / or at a feed point for feeding water as at a feed point arranged closer to an outlet of the absorber strand in the flow direction.
  • the number of feed points is kept low.
  • the supply of water does not have to be regulated separately.
  • a rough adjustment of the dosage to the radiation of the sun is sufficient. The Costs for exact regulation can thus be saved.
  • wet steam is present in the entire absorber line.
  • wet steam instead of solar superheated steam enables a greater mass flow density with the same heat supply.
  • the water for feeding into the absorber line is taken from the water-steam cycle of a fossil-fired power plant.
  • the water for the absorber line does not have to be made available, which saves on operating resources.
  • At least one water-carrying line opens into the absorber line in the flow direction in front of the collector.
  • a device 2 for generating solar steam comprises a plurality of collectors 4.
  • the individual collectors 4 have the shape of a parabolic.
  • Several collectors 4 are arranged one behind the other in such a way that a parabolic trough arrangement 28 is formed.
  • An absorber line 6 is assigned to the collectors 4 and is located in the focal line of the collectors 4.
  • the incident solar radiation is bundled by the collectors 4 of the parabolic trough arrangement 28 and concentrated on the absorber strand 6 with an absorber coating 30.
  • the energy of the solar radiation is absorbed in the absorber coating 30 and onto the water flowing in the absorber strand 6 transferred, which partially evaporates with the generation of wet steam.
  • wet steam is present in the entire absorber line 6 at all times during operation.
  • Wet steam contains water and steam at the same time, i.e. that the steam content x of the wet steam is less than 1.
  • water is additionally supplied to the absorber line 6. The additional water is fed into the absorber line 6 via the lines 18, 20, 22 at the feed points 10, 12, 14.
  • At least the same amount of water is fed in at the feed point 10, 12, 14 for feeding water as at a feed point 12, 14 which is arranged closer to the outlet 8 of the absorber strand 6 in the flow direction 16.
  • Embodiment does not require any special control mechanisms, since a rough dosage of water at the respective injection points 10, 12, 14 is sufficient.
  • the water for the device 2 which is fed into the absorber line 6 via the inlet 24 and via the lines 18, 20, 22, can, for example, the water-steam cycle taken from a fossil-fired power plant.
  • the wet steam from the device 2 can, for example, be returned to the steam cycle of the fossil-fired power plant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

L'invention concerne un procédé de production de vapeur solaire faisant intervenir au moins un collecteur (4) et au moins un tube (6) absorbeur conduisant l'eau et/ou la vapeur. Selon ce procédé, un excès d'eau est acheminé vers le tube (6) absorbeur de façon que de la vapeur humide se forme à une sortie (8) du tube (6) absorbeur, ce qui permet d'éviter un échauffement du tube (6) absorbeur.
EP96945345A 1995-10-17 1996-10-01 Procede et dispositif de production de vapeur solaire Ceased EP0856125A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19538672A DE19538672A1 (de) 1995-10-17 1995-10-17 Verfahren und Vorrichtung zum Betreiben eines Solarkraftwerkes zur Erzeugung von solarem Dampf
DE19538672 1995-10-17
PCT/DE1996/001886 WO1997014284A2 (fr) 1995-10-17 1996-10-01 Procede et dispositif de production de vapeur solaire

Publications (1)

Publication Number Publication Date
EP0856125A2 true EP0856125A2 (fr) 1998-08-05

Family

ID=7775095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96945345A Ceased EP0856125A2 (fr) 1995-10-17 1996-10-01 Procede et dispositif de production de vapeur solaire

Country Status (6)

Country Link
EP (1) EP0856125A2 (fr)
CN (1) CN1198808A (fr)
DE (1) DE19538672A1 (fr)
IL (1) IL123713A0 (fr)
MA (1) MA23988A1 (fr)
WO (1) WO1997014284A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1013693A3 (nl) * 2000-09-19 2002-06-04 Suria Holdings Sarl Werkwijze en inrichting voor het vervaardigen van stoom met zonne-energie.
DE102011004265A1 (de) * 2011-02-17 2012-08-23 Siemens Aktiengesellschaft Sonnenkollektorstrang für einen solarthermischen Durchlaufdampferzeuger
CN103090346A (zh) * 2011-11-02 2013-05-08 洛阳维琦太阳能技术有限公司 一种太阳光热转换蒸汽装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4126038A1 (de) * 1991-08-06 1993-02-11 Siemens Ag Gas- und dampfturbinenkraftwerk mit einem solarbeheizten dampferzeuger
WO1993010406A1 (fr) * 1991-11-14 1993-05-27 Common Plum Company N.V. Dispositif d'exploitation de l'energie solaire
DE4331784C2 (de) * 1993-09-18 1997-10-23 Deutsche Forsch Luft Raumfahrt Rinnenkollektor
DE4409197A1 (de) * 1994-03-17 1995-09-21 Siemens Ag Verfahren und Einrichtung zur solaren Dampferzeugung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9714284A2 *

Also Published As

Publication number Publication date
IL123713A0 (en) 1998-10-30
WO1997014284A3 (fr) 1997-07-03
MA23988A1 (fr) 1997-07-01
WO1997014284A2 (fr) 1997-04-24
DE19538672A1 (de) 1997-04-24
CN1198808A (zh) 1998-11-11

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