WO2015121139A1 - Procédé pour faire fonctionner une installation thermique solaire et installation thermique solaire - Google Patents

Procédé pour faire fonctionner une installation thermique solaire et installation thermique solaire Download PDF

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Publication number
WO2015121139A1
WO2015121139A1 PCT/EP2015/052357 EP2015052357W WO2015121139A1 WO 2015121139 A1 WO2015121139 A1 WO 2015121139A1 EP 2015052357 W EP2015052357 W EP 2015052357W WO 2015121139 A1 WO2015121139 A1 WO 2015121139A1
Authority
WO
WIPO (PCT)
Prior art keywords
molten salt
absorber
absorber tubes
heat transfer
transfer medium
Prior art date
Application number
PCT/EP2015/052357
Other languages
German (de)
English (en)
Inventor
Martin Eickhoff
Original Assignee
Deutsches Zentrum für Luft- und Raumfahrt e.V.
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 für Luft- und Raumfahrt e.V. filed Critical Deutsches Zentrum für Luft- und Raumfahrt e.V.
Priority to ES201690039A priority Critical patent/ES2620279B1/es
Priority to AU2015217805A priority patent/AU2015217805A1/en
Priority to US15/118,600 priority patent/US20170045265A1/en
Publication of WO2015121139A1 publication Critical patent/WO2015121139A1/fr

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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
    • 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
    • F24S10/30—Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
    • 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
    • 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
    • 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
    • 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
    • F24S40/60—Arrangements for draining the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00—Arrangements for storing heat collected by solar heat collectors
    • F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/20—Working fluids specially adapted for solar heat collectors
    • 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
    • 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 present invention relates to a method for operating a solar thermal power plant with a plurality of radiation receivers, which are operated with a molten salt as heat transfer medium and such a power plant.
  • a heat transfer medium is heated by means of sunlight by the sunlight is reflected by reflectors on an absorber, which is traversed by the heat transfer medium.
  • a heat transfer for example, serve a thermal oil or water.
  • the thermal energy of the heat transfer medium is then either used immediately, for example, to generate electricity, or there is a short-term heat storage.
  • molten salt is particularly suitable because high operating temperatures can be achieved, which leads to very good process efficiencies.
  • liquid salts are a very inexpensive thermal storage medium.
  • the inventive method is defined by the features of claim 1.
  • the solar thermal power plant according to the invention is defined by the features of claim 14.
  • the inventive method for operating a solar thermal power plant with several solar radiation receivers which are operated with a molten salt as a heat transfer medium, each solar radiation receiver having a reflector device and an absorber tube, the following steps are provided: Preheating the absorber tubes in the depleted state of the molten salt to a temperature T by concentrating solar radiation on the absorber tubes by means of the reflector devices, wherein the temperature T is greater than or equal to the melting temperature of the salt; after reaching the temperature T:
  • the inventive method thus provides that at the end of the operation of a solar thermal power plant, the absorber tubes of the solar radiation receiver are emptied, so that no molten salt remains in the absorber tubes. This avoids that the molten salt threatens to solidify in the absorber tubes and leads to a time-consuming and energy-consuming melting of molten salt in the absorber tubes or costly nocturnal heating is unnecessary. The costly constant heating of large solar fields overnight or on days with bad weather, for example in winter, is therefore not necessary, so that a considerable cost savings.
  • the draining of the molten salt from the absorber tubes has the additional advantage that damaged absorber tubes can be easily replaced in the emptied from the molten salt state against new.
  • the maintenance of the solar thermal power plant is thus considerably simplified.
  • the reflector devices are defocused at the end of the operation. This prevents the absorber tubes are irradiated in the emptied state of the molten salt, even after completion of operation and before the preheating with solar radiation and threaten to overheat.
  • a power regulation of the reflector device which is dependent on the position of the sun and / or weather conditions, takes place.
  • the preheating process is uncritical due to the position of the sun and the resulting relatively low solar radiation, so that the reflector device can be focused directly onto the absorber tube. Even with cloudy skies, the diffuse irradiation is sufficient to achieve a large part of the preheating. If the preheating is carried out during the midday sun, the solar radiation is too strong, so that inadmissible temperature gradients can arise in the absorber pipes.
  • a power regulation must be done so that a lower solar radiation is reflected on the absorber tubes.
  • the focus of a reflector device must therefore not be directly on the absorber tube, but must be slightly shifted relative to the absorber tube, so that only a portion of the reflected solar radiation reaches the absorber tube.
  • Reflector device After preheating the absorber tubes and the introduction of molten salt can then Reflector device are completely focused on the absorber tube.
  • the reflector devices may be only partially focused on the absorber tubes, for example on the edge region, or periodically focused and defocused. This ensures that the absorber tubes can be preheated targeted to the desired temperature T, without causing temperature-related damage due to excessive temperature gradients in the absorber tube walls.
  • the discharge of the molten salt from the absorber tubes is at least partially due to gravity.
  • absorber tubes inclined in one direction can be provided, whereby a gradient arises towards one end of the absorber tube and the molten salt can flow out of the absorber tube through the gradient.
  • pumps are additionally provided which support the discharge of molten salt.
  • a secondary heat transfer medium is passed through the absorber tubes.
  • the secondary heat transfer medium may be, for example, an inert gas, preferably nitrogen.
  • the secondary heat transfer medium provides for cooling at hot spots of the absorber tubes, so that the risk of overheating of some areas of the absorber tubes is reduced during preheating.
  • the heat energy transferred by the cooling to the heat transfer medium can be transported to cold regions of the absorber pipes, so that they are heated.
  • an inert gas cushion such as nitrogen
  • nitrogen is often used to prevent corrosion by air entrapment and to reduce salt melt aging.
  • the inert gas for example nitrogen, is thus already present in the system of the power plant and can thus be used advantageously during the preheating process.
  • the secondary heat transfer medium is introduced during discharge of the molten salt from the absorber tubes with respect to the environment increased pressure in the absorber tubes, wherein the secondary heat transfer medium presses the molten salt from the absorber tubes.
  • the discharge of the molten salt from the absorber tubes can be accelerated and, for example, a gravity-induced outflow of molten salt from the absorber tubes can be assisted.
  • the discharge process of the molten salt is significantly shortened.
  • the molten salt is discharged from the absorber tubes, it can also be provided that the molten salt is at least partially pumped out of the absorber tubes. This can be done additionally or alternatively to the gravity-induced or the pressing out of the molten salt.
  • the molten salt is discharged when discharging from the absorber tubes in at least one heat-insulated storage tank. It can thereby be achieved that the thermal energy contained in the molten salt melt is at least partially stored during the break in operation of the solar thermal power plant.
  • a storage tank for example, existing in conventional power plant circuits cold salt tank can be used. It is also possible that the salt is first passed into separate storage tanks, and from these into larger main salt tanks, such as a cold salt tank.
  • the secondary heat transfer medium when the molten salt is introduced into the absorber tubes, the secondary heat transfer medium is conducted into at least one storage tank.
  • the secondary heat transfer medium can be advantageously stored in order to reuse it during the preheating process or during the discharge of the molten salt from the absorber pipes.
  • the secondary storage tank is formed by the heat-insulated storage tank for the molten salt. This is particularly advantageous when using an inert gas, for example nitrogen, as a secondary heat transfer medium, since this inert gas is already used as a gas cushion in the heat-insulated storage tank for the molten salt to prevent corrosion or aging of the molten salt.
  • the use of the heat-insulated storage tank for molten salt than Secondary storage tank has the advantage that any residues of inert gas, which may initially remain in the absorber tubes are entrained during the recirculating conducting the molten salt through the absorber tubes from the molten salt and get into the heat-insulated storage tank or, for example, in a hot salt storage tank, in which the inert gas slowly ascend and pass into the appropriate Inertgaspolster the storage tank.
  • the secondary heat transfer medium remains in the absorber pipes in non-operation of the power plant.
  • the inert gas used for the Inertgaspolster the storage tank contained in the system serves as a secondary heat transfer medium, since in this case no other medium, such as air, enters the system, resulting in an additional draining this medium from the System would lead.
  • the secondary heat transfer medium is subjected to a high pressure and remains in the absorber tubes.
  • the high pressure can be up to 15 bar, for example.
  • the secondary heat transfer medium is recirculated under a high pressure, for example up to 15 bar.
  • a high pressure for example up to 15 bar.
  • the invention further relates to a solar thermal power plant for operation with a molten salt as a heat transfer medium with a plurality of solar radiation receivers, each having a reflector device and an absorber tube, through which the heat transfer medium is conductive, have.
  • the solar thermal power plant according to the invention is characterized in that the absorber tubes with a slope in the direction of at least one Storage tanks are arranged for the molten salt. This ensures that the molten salt used for normal operation of the solar thermal power plant can be drained from the absorber tubes in a simple manner, so that prevents the molten salt solidifies in an operating break of the solar thermal power plant in the absorber tubes.
  • the gradient advantageously allows salt melt to enter a storage tank due to gravity.
  • the feature "gradient in the direction of the at least one storage tank” in the context of the invention also includes variants in which a lower end of the absorber tubes is also directed in a direction other than the storage tank, but a pipe connection between the lower end of the absorber tube and the storage tank
  • the direction of the gradient is thus the flow direction along the flow path in the direction of the storage tanks, for example, the absorber tubes can be arranged at an angle a of up to 10 ° with respect to the horizontal.
  • the absorber tubes of a plurality of reflector devices are connected to one another to form an absorber tube chain and form a continuous gradient. It thus creates a long strand of absorber tubes through which the molten salt can be drained from the absorber tubes in an advantageous manner due to the continuous gradient.
  • the absorber tubes can be designed as partial tubes of a continuous tube forming the absorber tube chain.
  • Several reflector devices in this embodiment are associated with a tube forming the absorber tube chain.
  • a supply line for a secondary heat transfer medium opens into an upper end of an absorber tube or an absorber tube chain. In this way, it is possible to initiate the discharge of the molten salt or emptied absorber tubes, a secondary heat transfer medium, which is passed circulating, for example, during a warm-up of the absorber tubes through the absorber tubes.
  • the solar radiation receivers are arranged in loops, so-called loops, wherein in each case a loop of two parallel absorber tube chains is formed with the associated reflector devices, and wherein a cross-connection connects the upper ends of the absorber tube chains.
  • loops Such an arrangement has been found to be particularly advantageous because the arrangement of the solar radiation receiver with a slope having absorber tubes can be provided in a structurally simple manner.
  • the loops of the solar radiation receivers are thus arranged such that in normal operation of the power plant, the molten salt is first led up the slope by an absorber tube chain, and flows after flowing through the cross connection in the second absorber tube chain with the slope.
  • the pump power can be kept relatively low, since only for the conduction of the molten salt against the slope, a higher pumping power must be applied, but the return of the molten salt is supported by gravity.
  • the molten salt in the parallel absorber tube chains flows in the same direction, ie. at the first absorber tube chain against the flow direction of normal operation.
  • the arrangement in loops has the advantage that the discharge of molten salt from a loop can be done relatively quickly, since this can be done simultaneously in the two parallel arranged Absorberrohrketten. It can be provided that the supply line for a secondary heat transfer medium opens into the cross-connection. In this way, the heat transfer medium can be introduced simultaneously into the two parallel arranged Absorberrohrketten a loop.
  • the secondary heat transfer medium can in principle also be used to press the heat transfer medium out of the absorber pipes.
  • the solar thermal power plant according to the invention may have at least one secondary storage tank for the secondary heat transfer medium.
  • the at least one secondary storage tank can be formed, for example, by at least one storage tank for the molten salt. This is particularly advantageous when an inert gas is used as the secondary heat transfer medium, which is used in the storage tank for the molten salt as a gas cushion. As a result, the device-technical effort for a separate secondary storage tank can be avoided.
  • a pump, a fan or a compressor can be arranged, via which the secondary heat transfer medium with respect to the environment increased pressure in an absorber tube or an absorber tube chain can be introduced.
  • the secondary heat transfer medium can be transported to the upper end of the absorber tube or the absorber tube chain in an advantageous manner and beyond the secondary heat transfer medium during the discharge of the molten salt can press out of the absorber tubes or the Absorberrohrkette.
  • the gravity-induced release of molten salt is supported and accelerated.
  • the solar radiation receivers can be designed as parabolic trough receivers or Fresnel receivers.
  • the solar thermal power plant according to the invention can be operated in particular with the method according to the invention.
  • the single figure shows a schematic diagram of a solar thermal power plant 100 according to the invention.
  • the solar thermal power plant 100 is operated with a salt melt as the heat transfer medium.
  • the solar thermal power plant 100 has a plurality of solar radiation receivers 1, each having a reflector device 3.
  • the solar radiation receivers 1 are formed in the illustrated embodiment as parabolic trough collectors, so that the reflector devices have a parabolic shape.
  • the solar radiation receivers 1 each have an absorber tube 5.
  • Several solar radiation receivers 1 (four in the illustrated embodiment) are arranged in a row one behind the other, the absorber tubes 5 forming an absorber tube chain.
  • the absorber tube chain is formed as a continuous tube, so that the absorber tubes 5 are each part tubes of the continuous tube.
  • the solar thermal power plant 100 may have a plurality of these loops 9 of solar radiation receivers 1, but for the sake of clarity only one loop 9 is shown.
  • the illustrated loop 9 of solar radiation receivers 1 is arranged inclined, so that the transverse connection 7 connects two upper ends of the absorber tube chains.
  • the absorber tubes 5 of the absorber tube chains have a gradient.
  • the lower ends of the absorber tubes 5 and the absorber tube chains are connected to a storage tank 11 for the molten salt.
  • the absorber tubes 5 thus have a gradient in the direction of the storage tank 11.
  • the solar thermal power plant 100 also has a hot salt tank 13.
  • the molten salt is passed, for example via pumps, not shown, from the storage tank 11 through the loop 9 of solar radiation receivers 1 and heated by the solar radiation, which is reflected by the reflector devices 3 on the absorber tubes 5. Subsequently, the molten salt is passed into the hot salt tank 13. From the hot salt tank 13, the molten salt is passed to a heat exchanger, not shown, via which the thermal energy for further utilization, for example, to a steam turbine process with power generation can be transmitted. Subsequently, the molten salt is passed back into the storage tank 11. During normal operation, therefore, the molten salt recirculates through the solar radiation receiver, wherein the molten salt, for example, from a temperature of 290 ° C to about 550 ° C can be heated.
  • the storage tank 11 and the hot salt tank 13 each have a nitrogen pad 15, whereby corrosion due to air entrapment and molten salt aging is avoided.
  • the molten salt Upon completion of the operation of the solar thermal power plant 1, the molten salt is discharged from the absorber tubes 5 and fed into the storage tank 11.
  • the molten salt flows when discharging through the in the normal flow direction (ie, the flow direction in normal operation) the molten salt front solar radiation receiver 1 against the normal flow direction, whereas the rear in the normal flow direction solar radiation receiver 1 are omitted in the normal flow direction.
  • the normal flow direction of the molten salt is indicated by arrows shown.
  • the solar radiation resonators 1 in a loop 9 are thus emptied of molten salt very quickly by the molten salt flows simultaneously from the parallel arranged Absorberrohrketten.
  • the absorber tubes 5 and Absorberrohrketten are preferably inclined at an angle a of 10 ° relative to the horizontal.
  • the solar thermal power plant 100 also has a supply line 17, which opens into the transverse connection 7 at the upper end of the absorber tube chains.
  • a secondary heat transfer medium can be conducted into the absorber tubes 5.
  • the secondary heat transfer medium can be, for example, nitrogen.
  • nitrogen can be used from the nitrogen cushion 15 of the storage tank 11.
  • the secondary heat transfer medium is introduced into the absorber tubes 5 during the discharge of the molten salt. Since the discharge of molten salt from the absorber tubes in the storage tank 11 nitrogen of the nitrogen cushion 15 is displaced, this can be conducted in an advantageous manner via the supply line 17 into the absorber tubes 5.
  • a compressor or a pump may be arranged, via which the secondary heat transfer medium is introduced at high pressure into the absorber tubes 5.
  • the secondary heat transfer medium can act as a support during the discharge of the molten salt, since the secondary heat transfer medium presses the molten salt out of the absorber tubes 5.
  • a pump not shown, may be used.
  • the secondary heat transfer medium remains in the absorber tubes. 5
  • the secondary heat transfer medium is first recirculated through the solar radiation receiver 1.
  • the reflector devices are focused on the absorber tubes 5 from the defocused position assumed during the operating pause in order to preheat them for regular operation. Due to the recirculation of the secondary heat transfer medium, the heat in the absorber tubes 5 is distributed relatively uniformly, so that excessive temperature gradients that could lead to damage to the absorber tubes 5 are avoided.
  • the reflector devices may be completely focused on the absorber tubes 5 during the preheating phase, but for a so-called “under-focusing", for example where the focus strikes only one edge region of the absorber tube Alternatively, it can also be provided that the reflector devices are alternately focused and defocused.
  • the introduction of the molten salt into the absorber tubes 5 can be started.
  • the molten salt displaces the secondary heat transfer medium and presses it into a secondary storage tank.
  • the secondary storage tank is formed by the storage tank 11, wherein the nitrogen used as a secondary heat transfer medium is stored in the form of the gas cushion contained in the storage tank 11.
  • the secondary heat transfer medium can be recirculated through the absorber tubes in the normal flow direction or via the supply line 17, so that the parallel absorber tube chains of the loop 9 are flowed through in parallel.
  • the solar thermal power plant 100 according to the invention or the method according to the invention for operating a solar thermal power plant 100 has the advantage that the salt melt does not remain in the absorber pipes during operating pauses and thus avoids the risk that the molten salt in the absorber pipes solidifies or a costly heating the molten salt is not necessary during the breaks.
  • a storage tank 11 which is thermally insulated, the thermal energy contained in the molten salt can be cached to a large extent during the downtime, so that it can be used in a restart of the solar thermal power plant 100. Only during longer periods of operation, such as during long periods of bad weather in winter, heating before commissioning of the power plant is necessary when the molten salt solidifies in the storage tank 11.
  • the discharge of the molten salt from the absorber pipes takes place before each break in operation.
  • the molten salt is only released from the absorber pipes when the break in operation is planned for a longer, predetermined period of time. For example, the daily emptying process of a whole solar field before a night break can be too time-consuming, if the night time in the summer only very are short. Therefore, the inventive method can also be used only for longer periods of operation, such as bad weather periods and for maintenance purposes.
  • the method according to the invention can also be used, for example, only for partial areas of a power plant, if necessary in these repair measures.

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

Abstract

L'invention concerne un procédé pour faire fonctionner une installation thermique solaire (100) comportant une pluralité de récepteurs de rayonnement solaire (1) qui fonctionnent avec un sel en fusion utilisé comme milieu de transfert de chaleur, chaque récepteur de rayonnement solaire (1) comportant un dispositif réflecteur (3) et un tube absorbeur (5), ledit procédé comprenant les étapes consistant à : préchauffer les tubes absorbeurs (5), dépourvus de sel fondu, à une température T par concentration du rayonnement solaire sur les tubes absorbeurs (5) au moyen des dispositifs réflecteurs (3), la température T étant supérieure ou égale à la température de fusion du sel; après avoir atteint la température T : introduire le sel en fusion dans les tubes absorbeurs (5) et faire circuler le sel en fusion à travers les tubes absorbeurs (5) tout en réglant les dispositifs réflecteurs (3) en fonction de la position du soleil; à la fin de l'opération : évacuer le sel en fusion des tubes absorbeurs (5).
PCT/EP2015/052357 2014-02-13 2015-02-05 Procédé pour faire fonctionner une installation thermique solaire et installation thermique solaire WO2015121139A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES201690039A ES2620279B1 (es) 2014-02-13 2015-02-05 Procedimiento para el funcionamiento de una central térmica solar y central térmica solar que funciona de acuerdo a dicho procedimiento
AU2015217805A AU2015217805A1 (en) 2014-02-13 2015-02-05 Method for operating a solar thermal power plant, and solar thermal power plant
US15/118,600 US20170045265A1 (en) 2014-02-13 2015-02-05 Method for operating a solar thermal power plant, and solar thermal power plant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014202633.4 2014-02-13
DE102014202633.4A DE102014202633B4 (de) 2014-02-13 2014-02-13 Verfahren zum Betrieb eines solarthermischen Kraftwerks sowie solarthermisches Kraftwerk

Publications (1)

Publication Number Publication Date
WO2015121139A1 true WO2015121139A1 (fr) 2015-08-20

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US (1) US20170045265A1 (fr)
AU (1) AU2015217805A1 (fr)
DE (1) DE102014202633B4 (fr)
ES (1) ES2620279B1 (fr)
WO (1) WO2015121139A1 (fr)

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CN115493302A (zh) * 2022-11-21 2022-12-20 兰州大成科技股份有限公司 线聚焦集热系统排空传热工质的方法及其线聚焦集热系统

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CN108413634B (zh) * 2018-03-08 2020-04-28 中国科学院电工研究所 一种无循环阀门的塔式太阳能热发电熔融盐吸热器、熔融盐系统和方法
CN111981883B (zh) * 2020-07-31 2021-12-17 湖北省电力勘测设计院有限公司 熔盐储罐快速预热控制方法

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