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WO2011091883A2 - Suppression d'instabilités statiques dans des générateurs de vapeur à circulation forcée par circuit combiné d'écoulements dans le même sens et en sens inverse - Google Patents

Suppression d'instabilités statiques dans des générateurs de vapeur à circulation forcée par circuit combiné d'écoulements dans le même sens et en sens inverse Download PDF

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Publication number
WO2011091883A2
WO2011091883A2 PCT/EP2010/067917 EP2010067917W WO2011091883A2 WO 2011091883 A2 WO2011091883 A2 WO 2011091883A2 EP 2010067917 W EP2010067917 W EP 2010067917W WO 2011091883 A2 WO2011091883 A2 WO 2011091883A2
Authority
WO
WIPO (PCT)
Prior art keywords
solar thermal
steam generator
heat transfer
heat exchanger
exchanger tubes
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/EP2010/067917
Other languages
German (de)
English (en)
Other versions
WO2011091883A3 (fr
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
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 WO2011091883A2 publication Critical patent/WO2011091883A2/fr
Publication of WO2011091883A3 publication Critical patent/WO2011091883A3/fr
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
    • 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

Definitions

  • the invention relates to a solar thermal continuous steam generator, in particular for solar thermal power plants with parabolic trough collectors and indirect evaporation.
  • 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.
  • the invention is therefore based on the object to avoid dynamic instabilities in solar ⁇ thermal steam generators of the type mentioned above.
  • a solar thermal steam generator is proposed, in particular for a solar thermal power plant, through which a heat transfer medium in a first direction is feasible, wherein heat exchanger tubes in a first section in Substantially in a counter-current direction to the first direction and in a second portion substantially in one
  • the heat exchanger tubes are arranged in a third section substantially in a counter-current direction to the first direction. It is expedient if the first section of the heat ⁇ exchanger tubes an economizer, the second section of the heat ⁇ exchanger tubes an evaporator and the third section of the heat exchanger tubes is a superheater.
  • the heat transfer medium is a thermal oil.
  • the heat transfer medium is a molten salt.
  • a solar thermal power plant advantageously comprises a steam generator according to the invention. Furthermore, it is advantageous if the solar thermal power plant comprises parabolic troughs. Shown schematically and not to scale:
  • FIG. 3 shows a detailed view of the continuous steam generator
  • the solar thermal power plant ⁇ plant 1 comprises a not shown in figure 1 the solar field, in the concentrate the solar radiation and is converted into heat energy ⁇ .
  • the solar field may include parabolic trough collectors or Fresnel collectors, for example.
  • Concentrated solar radiation is delivered to a heat transfer medium, such as thermal oil, which has a much higher boiling point than water, so that temperatures of 300-400 ° C can be achieved.
  • a heat transfer medium such as thermal oil, which has a much higher boiling point than water, so that temperatures of 300-400 ° C can be achieved.
  • the heat transfer medium is transported to the solar thermal steam generator 3, in which a working fluid, such as water, heated, evaporated and the steam generated is overheated, wherein the heat transfer medium cools again.
  • the cooled heat transfer medium is pumped via line 4 back into the solar field.
  • the superheated steam is introduced in the so-called conventional part of the solar thermal power plant 1 via a Frischdampflei ⁇ device 5 in a steam turbine 6 as the working medium.
  • the steam turbine 6 drives a generator 7.
  • the working medium is expanded and then liquefied in a condenser 8.
  • a feedwater pump 9 pumps the liquefied working medium back to the solar thermal steam generator 3, whereby the water-steam cycle 10 of the working medium is closed.
  • 2 shows a solar thermal steam generator 3 according to the prior art with an inlet 11 for the hot heat ⁇ carrier medium at the upper end of a pressure-tight vessel 12 and an outlet 13 for the cooled heat transfer medium at the lower end of the container 12th
  • Feedwater 14 is supplied to the solar thermal steam generator 3 at its lower end and distributed via an inlet header 15 to heat exchanger tubes 16, which are arranged in the container 12 ⁇ .
  • the heat exchanger tubes 16 are formed so that heat from the heat transfer medium can be transferred to the working medium. So that the hot heat transfer medium due to the lower flow resistance does not flow past the entirety of the heat exchanger tubes 16 and mainly along the inner wall of the container 12 but through the politicians (2004)bergerrohr fundamentalmony, the heat transfer medium is guided in a flow channel 17 through the container 12 of the solar thermal heat recovery steam generator 3.
  • the flow channel 17 Erwei ⁇ tert of him at its upper end from the inlet 11 and is open at the bottom.
  • the container 12 is filled in operation within and outside the flow channel 17 with the heat exchange medium.
  • FIG. 3 shows a detail view of the continuous-flow steam generator 3 according to the invention in section, which is divided into three sections 20, 21, 22 with respect to the flow guide.
  • the first section 20 includes the feed water inlet 14 to Be ⁇ beginning of the evaporation (economizer) and runs in countercurrent to the heat transfer medium 23.
  • the second portion 21 comprises the beginning of the evaporation up to the end of the evaporation (evaporator) and extends in parallel flow to the heat transfer medium 23
  • the third section 22 comprises the end of the evaporation until to the outlet of the live steam 18 (superheater) and runs in countercurrent to the heat transfer medium 23rd
  • the size of the sections 20 and 22 may vary. In extreme cases, these sections 20 and 22 may also be omitted.

Landscapes

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

Abstract

L'invention concerne un générateur de vapeur thermique solaire (3), destiné notamment à une centrale thermique solaire (1), à travers lequel un agent caloporteur (23) peut être acheminé dans une première direction, des tubes d'échange thermique (16) étant disposés, dans une première partie (20), sensiblement dans le sens inverse à la première direction et, dans une deuxième partie (21), sensiblement dans le même sens que la première direction.
PCT/EP2010/067917 2010-02-01 2010-11-22 Suppression d'instabilités statiques dans des générateurs de vapeur à circulation forcée par circuit combiné d'écoulements dans le même sens et en sens inverse Ceased WO2011091883A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010006461 2010-02-01
DE102010006461.0 2010-02-01

Publications (2)

Publication Number Publication Date
WO2011091883A2 true WO2011091883A2 (fr) 2011-08-04
WO2011091883A3 WO2011091883A3 (fr) 2012-05-31

Family

ID=44212070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/067917 Ceased WO2011091883A2 (fr) 2010-02-01 2010-11-22 Suppression d'instabilités statiques dans des générateurs de vapeur à circulation forcée par circuit combiné d'écoulements dans le même sens et en sens inverse

Country Status (1)

Country Link
WO (1) WO2011091883A2 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1122082B (de) * 1957-12-13 1962-01-18 Ver Kesselwerke Ag Zwangdurchlaufdampferzeuger
EP0425717B1 (fr) * 1989-10-30 1995-05-24 Siemens Aktiengesellschaft Générateur de vapeur à passage unique
DE19627425A1 (de) * 1996-07-08 1998-01-15 Asea Brown Boveri Verfahren zum Betrieb einer Hybrid-Solar-Kombianlage sowie eine Hybrid-Solar-Kombianlage
DE19651936C2 (de) * 1996-12-14 2000-08-31 Nem Bv Durchlaufdampferzeuger mit einem Gaszug zum Anschließen an eine Heißgas abgebende Vorrichtung
DE19700350A1 (de) * 1997-01-08 1998-07-16 Steinmueller Gmbh L & C Durchlaufdampferzeuger mit einem Gaszug zum Anschließen an eine Heißgas abgebende Vorrichtung
US7971437B2 (en) * 2008-07-14 2011-07-05 Bell Independent Power Corporation Thermal energy storage systems and methods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
WO2011091883A3 (fr) 2012-05-31

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