WO2011113973A1 - Economizador en planta solar de torre y método de funcionamiento de dicha planta - Google Patents
Economizador en planta solar de torre y método de funcionamiento de dicha planta Download PDFInfo
- Publication number
- WO2011113973A1 WO2011113973A1 PCT/ES2011/000074 ES2011000074W WO2011113973A1 WO 2011113973 A1 WO2011113973 A1 WO 2011113973A1 ES 2011000074 W ES2011000074 W ES 2011000074W WO 2011113973 A1 WO2011113973 A1 WO 2011113973A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- economizer
- receiver
- solar
- fluid
- tower
- Prior art date
Links
- 238000011017 operating method Methods 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000127225 Enceliopsis nudicaulis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- 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
- 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
- F03G6/064—Devices for producing mechanical power from solar energy with solar energy concentrating means having a gas turbine cycle, i.e. compressor and gas turbine combination
-
- 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
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/003—Feed-water heater 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
-
- 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 is part of the technology related to central receiver thermoelectric solar plants for the production of electricity or process heat.
- SCS Solar Concentration Systems
- the central tower receiver systems where solar radiation is concentrated through the use of heliostats in a receiver located at the top of a tower and where it is transformed into thermal energy by heat absorption by of the working fluid.
- Thermal losses in a solar tower concentration receiver are estimated at around 10% -20%, depending on the design. These losses can be of two types, thermal radiation losses and thermal convection losses. The thermal losses by radiation in turn can be thermal losses by reflection of the material and thermal losses by emission of the material. rial.
- WO 2009/044622 A1 describes a way of preheating the water by circulating it through pipes exposed to solar radiation, before sending it to the receiver.
- WO 2008/154599 A1 also describes a way to preheat the water by passing it through electric preheaters that raise its temperature before entering the circuit of the solar plant itself.
- both solutions are examples that try to increase the efficiency of the system by preheating the water or heat transfer fluid before it circulates through the solar receiver, with the aim of achieving higher temperature at the exit of the receiver and, consequently, higher yields in the turbine and therefore greater system efficiency.
- both developments use new energy to preheat this water.
- the water is preheated with solar rays, which implies that a large area of the soil is required to have it occupied with these pipes, in addition to requiring that the receiver is not elevated.
- the water is preheated with an electrical resistance, that is, part of the energy that the plant produces is used to preheat the water, which implies a penalty in the efficiency of the plant due to these electrical self-consumption.
- the present invention aims to provide a water preheating system before entering the receiver, but which differs from the known state of the art because it uses the thermal losses of the receiver itself as preheating energy, considerably increasing the plant efficiency
- the following invention consists of a solar tower receiver system in which it is a question of recovering heat from losses by arranging an economizer on the top of a receiver.
- an economizer system To increase the efficiency of a tower receiver, either saturated steam or superheated steam, an economizer system has been designed. This economizer collects the heat from the thermal losses of the receiver, both losses by convection, by reflection, as well as by radiation losses due to the emissivity of the material from which the receiver is manufactured.
- the economizer consists of a heat exchanger through which a fluid circulates (preferably water) whose purpose is the preheating of said fluid.
- the economizer is placed in the upper part of the receiver so that it takes advantage of the heat given off by the receiver, due to the thermal losses generated. Thanks to this thermal energy, this fluid is preheated in the economizer until the necessary temperature is reached. In the case of water, this temperature is necessary to enter the boiler.
- the water in the boiler passes directly to the saturated steam receiver.
- the steam that comes out of the saturated steam receiver can be directed directly to the turbine or first to the superheated steam receiver, if it exists and then to the turbine.
- a high pressure economizer is one that works at pressures greater than 90 bar, thus replacing the economizer with the high pressure heaters existing in traditional plants.
- a secondary economizer can be installed.
- the secondary economizer consists of a high pressure heater also installed on top of the tower. In it, live steam is taken, that is, part of the steam is extracted before it enters the turbine and this steam is used to increase the temperature of the supply fluid of the receiver in a heat exchanger. The drainage of this secondary economizer will be taken directly to the boiler using a small pump or the deaerator with a pipe from the top of the tower to it.
- the efficiency of the system is drastically increased for two fundamental reasons: the fluid entering the receiver is preheated and the heat of the thermal losses
- FIG. 1 Steam circulation system in which the economizer is included
- Figure 2 Plane-shaped economizer located above the receiver
- the solar economizer in tower solar receivers will be described below, according to a preferred embodiment, in which the fluid circulating through the receiver is water.
- the circuit comprises feed pumps (1) which are responsible for providing the water to the receiver (3), after preheating.
- the subcooled water (about 110 ° C) is elevated to the top of the tower. Said water is circulated through the economizer (2).
- the economizer (2) (which in a preferred embodiment is placed on the ceiling of the receiver (3)) the water at 110 ° C is heated thanks to the loss energy of the receiver (3).
- the outlet of the boiler (5) is connected to the inlet of the saturated receiver (3), so that the water that now enters the receiver (3) is already at a high temperature.
- the saturated steam (6) leaving the saturated steam receiver (3) is taken directly to a turbine if it is not desired to overheat or to an overheated steam receiver and then to a turbine.
- This secondary economizer (4) comprises a high pressure exchanger or heater located at the top of the tower. Live steam circulates through said exchanger, that is, steam that is extracted from the turbine, and that is used to transmit heat to the feedwater, increasing its temperature before entering the boiler (5).
- Preheated water from either of the two economizers (2, 4) is taken to the boiler (5) and from there to the receiver (3).
- the geometry of the economizer (2) as seen in Figure 2 and according to a preferred embodiment, comprises a panel of tubes, with or without fins located on the receiver (3) forming a plane. It can also be configured in the form of a bundle of tubes, as shown in Figure 3. So that the heat that due to the losses rises through the cavity of the receiver, heats the cold water.
- This economizer (2) will have a special coating of absorptivity greater than 0.9 to receive all the heat it receives and can be constructed of steel.
- This economizer system as seen in Figures 2 and 3, is installed on the top of the receiver (3), so that the heat given off by thermal losses, whether from radiation, convection or reflection or by conduction of the material that forms the receiver, is captured by the economizer (2).
- An economizer can be installed in both saturated steam receivers and superheated steam receivers, that is, in the same tower there may be as many economizers as there are, whatever type they are. Although the system has been designed for application in solar tower receivers, its extension to other fields of the industry that require similar characteristics is not ruled out.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20110755723 EP2549196A4 (en) | 2010-03-16 | 2011-03-15 | ECONOMIZER USED IN A TOWER SOLAR POWER PLANT AND METHOD OF OPERATING THE SAME |
US13/635,289 US9151278B2 (en) | 2010-03-16 | 2011-03-15 | Economizer in solar tower plant and operating method of said plant |
CN2011800233947A CN102918333A (zh) | 2010-03-16 | 2011-03-15 | 塔式太阳能发电厂的节能装置及其操作方法 |
ZA2012/07610A ZA201207610B (en) | 2010-03-16 | 2012-10-10 | Solar tower power plant economizer and plant operating method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201000346A ES2365286B1 (es) | 2010-03-16 | 2010-03-16 | Economizador en planta solar de torre y método de funcionamiento de dicha planta. |
ESP201000346 | 2010-03-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011113973A1 true WO2011113973A1 (es) | 2011-09-22 |
WO2011113973A4 WO2011113973A4 (es) | 2011-11-24 |
Family
ID=44583784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2011/000074 WO2011113973A1 (es) | 2010-03-16 | 2011-03-15 | Economizador en planta solar de torre y método de funcionamiento de dicha planta |
Country Status (8)
Country | Link |
---|---|
US (1) | US9151278B2 (es) |
EP (1) | EP2549196A4 (es) |
CN (1) | CN102918333A (es) |
CL (1) | CL2012002534A1 (es) |
ES (1) | ES2365286B1 (es) |
SA (1) | SA111320274B1 (es) |
WO (1) | WO2011113973A1 (es) |
ZA (1) | ZA201207610B (es) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102345858A (zh) * | 2011-09-28 | 2012-02-08 | 东方电气集团东方锅炉股份有限公司 | 一种产生过热蒸汽的太阳能腔式吸热器 |
CN103047776A (zh) * | 2012-10-22 | 2013-04-17 | 张栋 | 太阳能塔式热发电新型高效接收器 |
Families Citing this family (3)
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 |
WO2017035043A1 (en) * | 2015-08-24 | 2017-03-02 | Abengoa Solar Llc. | Solar receiver using heat pipes and granular thermal storage medium |
MX2021012164A (es) | 2019-04-04 | 2021-11-03 | Vast Solar Pty Ltd | Conjunto y metodo para fijar un heliostato a una cimentacion. |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3924604A (en) | 1974-05-31 | 1975-12-09 | Schjeldahl Co G T | Solar energy conversion system |
US4164123A (en) * | 1976-08-25 | 1979-08-14 | Smith Otto J M | Solar thermal electric power plant |
US4400946A (en) | 1979-09-07 | 1983-08-30 | Bbc Brown, Boveri & Company Limited | Solar thermal power plant |
US4512336A (en) * | 1982-10-14 | 1985-04-23 | The Babcock & Wilcox Company | Panel of vapor generating and superheating tubes |
US6911110B2 (en) | 2001-06-12 | 2005-06-28 | The Boeing Company | Thermally controlled solar reflector facet with heat recovery |
WO2008118980A1 (en) | 2007-03-26 | 2008-10-02 | Brightsource Energy | Distributed power towers with differentiated functionalities |
EP2000669A2 (en) * | 2007-06-07 | 2008-12-10 | Abengoa Solar New Technologies, S.A. | Solar cencentration plant for the production of superheated steam |
WO2008153922A1 (en) * | 2007-06-06 | 2008-12-18 | Ausra, Inc. | Integrated solar energy receiver-storage unit |
WO2008154599A1 (en) | 2007-06-11 | 2008-12-18 | Brightsource Energy, Inc. | Solar receiver |
WO2009044622A1 (ja) | 2007-10-01 | 2009-04-09 | Mitaka Kohki Co., Ltd. | 太陽熱利用システム |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4289114A (en) * | 1978-09-12 | 1981-09-15 | The Babcock & Wilcox Company | Control system for a solar steam generator |
US4245618A (en) | 1978-10-10 | 1981-01-20 | The Babcock & Wilcox Co. | Vapor generator |
DE2937529C2 (de) * | 1979-09-17 | 1983-05-11 | Kraftwerk Union AG, 4330 Mülheim | Sonnenkraftwerk |
US4485803A (en) * | 1982-10-14 | 1984-12-04 | The Babcock & Wilcox Company | Solar receiver with interspersed panels |
US4567733A (en) * | 1983-10-05 | 1986-02-04 | Hiross, Inc. | Economizing air conditioning system of increased efficiency of heat transfer selectively from liquid coolant or refrigerant to air |
WO2009105689A2 (en) * | 2008-02-22 | 2009-08-27 | Esolar, Inc. | Solar receivers with internal reflections and flux-limiting patterns of reflectivity |
US8607567B2 (en) * | 2008-04-16 | 2013-12-17 | Alstom Technology Ltd | Solar steam generator |
WO2011044281A2 (en) * | 2009-10-07 | 2011-04-14 | Areva Solar, Inc. | Multi-tube solar thermal receiver |
-
2010
- 2010-03-16 ES ES201000346A patent/ES2365286B1/es not_active Expired - Fee Related
-
2011
- 2011-03-15 US US13/635,289 patent/US9151278B2/en not_active Expired - Fee Related
- 2011-03-15 SA SA111320274A patent/SA111320274B1/ar unknown
- 2011-03-15 CN CN2011800233947A patent/CN102918333A/zh active Pending
- 2011-03-15 EP EP20110755723 patent/EP2549196A4/en not_active Withdrawn
- 2011-03-15 WO PCT/ES2011/000074 patent/WO2011113973A1/es active Application Filing
-
2012
- 2012-09-13 CL CL2012002534A patent/CL2012002534A1/es unknown
- 2012-10-10 ZA ZA2012/07610A patent/ZA201207610B/en unknown
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3924604A (en) | 1974-05-31 | 1975-12-09 | Schjeldahl Co G T | Solar energy conversion system |
US4164123A (en) * | 1976-08-25 | 1979-08-14 | Smith Otto J M | Solar thermal electric power plant |
US4400946A (en) | 1979-09-07 | 1983-08-30 | Bbc Brown, Boveri & Company Limited | Solar thermal power plant |
US4512336A (en) * | 1982-10-14 | 1985-04-23 | The Babcock & Wilcox Company | Panel of vapor generating and superheating tubes |
US6911110B2 (en) | 2001-06-12 | 2005-06-28 | The Boeing Company | Thermally controlled solar reflector facet with heat recovery |
WO2008118980A1 (en) | 2007-03-26 | 2008-10-02 | Brightsource Energy | Distributed power towers with differentiated functionalities |
WO2008153922A1 (en) * | 2007-06-06 | 2008-12-18 | Ausra, Inc. | Integrated solar energy receiver-storage unit |
EP2000669A2 (en) * | 2007-06-07 | 2008-12-10 | Abengoa Solar New Technologies, S.A. | Solar cencentration plant for the production of superheated steam |
WO2008154599A1 (en) | 2007-06-11 | 2008-12-18 | Brightsource Energy, Inc. | Solar receiver |
WO2009044622A1 (ja) | 2007-10-01 | 2009-04-09 | Mitaka Kohki Co., Ltd. | 太陽熱利用システム |
Non-Patent Citations (1)
Title |
---|
See also references of EP2549196A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102345858A (zh) * | 2011-09-28 | 2012-02-08 | 东方电气集团东方锅炉股份有限公司 | 一种产生过热蒸汽的太阳能腔式吸热器 |
CN103047776A (zh) * | 2012-10-22 | 2013-04-17 | 张栋 | 太阳能塔式热发电新型高效接收器 |
Also Published As
Publication number | Publication date |
---|---|
EP2549196A1 (en) | 2013-01-23 |
ZA201207610B (en) | 2013-06-26 |
ES2365286A1 (es) | 2011-09-28 |
WO2011113973A4 (es) | 2011-11-24 |
EP2549196A4 (en) | 2014-11-12 |
CN102918333A (zh) | 2013-02-06 |
US9151278B2 (en) | 2015-10-06 |
CL2012002534A1 (es) | 2013-05-17 |
SA111320274B1 (ar) | 2015-03-30 |
US20130199183A1 (en) | 2013-08-08 |
ES2365286B1 (es) | 2012-06-07 |
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