WO1994027096A2 - Disque concentrateur d'energie solaire relie a un generateur de puissance - Google Patents

Disque concentrateur d'energie solaire relie a un generateur de puissance Download PDF

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Publication number
WO1994027096A2
WO1994027096A2 PCT/IB1994/000099 IB9400099W WO9427096A2 WO 1994027096 A2 WO1994027096 A2 WO 1994027096A2 IB 9400099 W IB9400099 W IB 9400099W WO 9427096 A2 WO9427096 A2 WO 9427096A2
Authority
WO
WIPO (PCT)
Prior art keywords
energy conversion
conversion assembly
assembly according
dwell chamber
joint
Prior art date
Application number
PCT/IB1994/000099
Other languages
English (en)
Other versions
WO1994027096A3 (fr
Inventor
Daya Ranjit Senanayake
Original Assignee
Daya Ranjit Senanayake
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 Daya Ranjit Senanayake filed Critical Daya Ranjit Senanayake
Priority to AU65802/94A priority Critical patent/AU6580294A/en
Priority to DE4493139T priority patent/DE4493139T1/de
Publication of WO1994027096A2 publication Critical patent/WO1994027096A2/fr
Publication of WO1994027096A3 publication Critical patent/WO1994027096A3/fr

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
    • F03G6/062—Parabolic point or dish concentrators
    • 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
    • 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
    • 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
    • F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
    • 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

  • This invention relates to the coupling of a solar dish concentrator to a power generator.
  • Solar disc concentrators need to be raised from the ground and to be mounted to track the sun.
  • the solar energy captured by a concentrator is continuously directed to a reception point, there to be used for instance for driving a Rankine cycle engine (for electrical power generation).
  • One of the current problems with solar dish concentrators is to find a suitable means of converting the concentrated solar rays into useful electrical power, including the further problem of transporting and storing the medium heated by the concentrated solar rays in a manner to minimising losses.
  • the invention has particular application to the generation of power by a Rankine binary cycle turbine. DESCRIPTION OF THE PRIOR ART
  • a solar powered Rankine Cycle Pumping Engine is disclosed in US Patent 4,103,493.
  • the solar heat is received by collector, which however does not track the sun. There is no storage of surplus heat, nor therefore attempted equalisation between periods of surplus and shortfall.
  • a solar powered Rankine Cycle Pumping Engine is disclosed in US Patent 4,765,144.
  • the solar energy is however received by a planar collector of limited dimensions; though the collector is mounted on a solar tracker, it has flexible fluid lines to and from the collector, which may not withstand the higher medium temperatures required for effective engine operation.
  • an energy conversion assembly which includes a solar dish concentrator having a focal point, means to move the concentrator whereby to track the sun, absorbtion means to absorb solar energy, said absorbtion means being at said focal point characterised by a power generator, by fluid conduit means connecting the absorbtion means and the generator, and by at least one flexible joint in said fluid conduit means.
  • conduit means can be rigid (except for the joint or joints) and so better able to withstand the higher fluid temperatures to be used in the invention.
  • conduit means can be co-axial, with an inner conduit for the hotter fluid passing towards the engine and an outer encircling conduit for the cooler returning fluid.
  • the fluid is retained in a closed cycle.
  • a storage reservoir comprising an inner hot chamber and a cooler outer chamber can also be provided.
  • Each rotating or flexible joint can be surrounded by a flexible cover, filled with cool operating fluid, under pressure.
  • the power generator is a Rankine binary cycle turbine.
  • Fig.l shows a solar dish concentrator coupled to a Rankine binary cycle turbine power generator according to the invention.
  • Fig.2 is a sectional view of a heat recovery pipe and rotating joint.
  • the solar dish 1 is known energy concentrator, which collects and concentrates solar rays to a receiver 2 fixedly mounted at the focal point of the concentrator 1.
  • a Rankine binary cycle power generator or engine 14 is positioned adjacent to the solar dish 1.
  • An insulated cross-flow heat recovery system is connected between the receiver 2 and the engine 14.
  • a heat recovery pipe 3 is fixed at its one end to the receiver 2, and at its other (exit) end is fixed to a part of a rotating joint 4.
  • the entire rotating joint 4 is enclosed in a flexible cover 5.
  • the rotating joint 4 is connected to one end of a second section of heat recovery pipe 6.
  • the other end of the heat recovery pipe 6 is connected to a second rotating joint 7.
  • Rotating joint 7 is enclosed in a flexible cover 8.
  • Rotating joint 7 is connected to one end of a third heat recovery pipe 9.
  • the other (exit) end of the pipe 9 is connected to a third rotating joint 10.
  • Rotating joint 10 is enclosed in a flexible cover 11.
  • the third rotating joint 10 is connected to a heat recovery storage tank 12.
  • a fourth heat recovery pipe 13 connects the heat recovery storage tank 12 to the inlet of the Rankine binary cycle turbine 14.
  • the receiver 2 contains a fluid which becomes heated by the solar rays concentrated to focal point on the receiver.
  • the heated fluid flows through the inner core or conduit 20 of the heat recovery pipes 3,6,9 and 13 (which are insulated) and so (by way of inner chamber 16 of intermediate or storage unit 12) to the heat exchange unit of the Rankine binary cycle turbine 14, where the heated fluid (or energy transporting medium) imparts its heat.
  • Storage tank 12 includes not only of the inner chamber or core 16 which is well insulated, and holds “on call” for the turbine 14 the hot fluid arriving from the receiver 2, but also has an outer chamber 17 which holds “on call” cooled fluid flowing back from the Rankine binary cycle turbine 14 through the outer conduit of heat recovery pipe 13. Chambers 16, 17 are insulated from each other and from the surrounding atmosphere.
  • the cooled fluid in the outer chamber(s) 17 of the heat recovery storage tank 12 is pumped back to the receiver 2 as required, through the outer cores or conduits of co ⁇ axial heat recovery pipes 9,6 and 3, to be reheated by the concentrator 1, completing a cycle.
  • the flow arrangement for the cooled fluid ensures that any heat loss from the hot fluid located therewithin is recovered largely by the returning cooled fluid; furthermore as the pipes are insulated to the outside the heat loss from the system to the atmosphere is minimised.
  • the flexible covers 5,8 and 11 also transmit cooled fluid to the outside and the hot fluid to the inside, also to utilise heat losses from the hotter fluid.
  • the rotating joints 4,7 and 10 permit flexible movement of the pipes as the receiver 2 and the concentrator 1 move in tracking the sun.
  • the heat recovery storage tank 12 permits the collection and storage of hot fluids from e.g. three solar dish concentrators, so that the power production of the system can perhaps operate effectively for 24 hours with a sunshine period of perhaps only 8 hours per day.
  • the coupling of the solar dish concentrator 1 to the Rankine binary cycle turbine permits the use of a range of temperatures for the working fluid in the range 80° to 400°» and enables the use of one or more heat sources to maintain power output.
  • ⁇ d ⁇ modular units each of approximately 1 megawatt can be set up, and expanded in modules to create 100 megawatt installations, or more.
  • flexible cover 5 provides an extra seal for the rotating joint; the flexible cover is insulated and pressurised with the same fluid and clamped/sealed in place.
  • the pressure of the fluid in the flexible cover 5 is maintained at a slightly higher pressure than the pressure of the fluid in the outer core of heat recovery pipe 3,6,9 and 13 (to prevent any leaks from the pipes).
  • other types of turbines rather than Rankine binary cycle turbines, may be used.
  • rotating and flexible joints including labyrinth joints and graphite discs and bearings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (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)
  • Sorption Type Refrigeration Machines (AREA)
  • Photovoltaic Devices (AREA)

Abstract

On décrit un dispositif de conversion d'énergie solaire comprenant un disque concentrateur d'énergie solaire (1) possédant un point focal, un moyen permettant de modifier la position du disque (1) afin de suivre la progression du soleil et un moyen (2) d'absorption de l'énergie solaire. Ce dernier est placé audit point focal et est caractérisé par un générateur de puissance (14), par des conduites de circulation de fluide (3) reliant le moyen d'absorption et le générateur (14) et par au moins un joint souple (4, 7, 10) placé sur lesdites conduites (3)
PCT/IB1994/000099 1993-05-11 1994-05-09 Disque concentrateur d'energie solaire relie a un generateur de puissance WO1994027096A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU65802/94A AU6580294A (en) 1993-05-11 1994-05-09 Solar dish concentrator coupled to power generator
DE4493139T DE4493139T1 (de) 1993-05-11 1994-05-09 Mit einem Stromgenerator gekoppelter Sonnenhohlspiegel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LK1051593 1993-05-11
LK10515 1993-05-11

Publications (2)

Publication Number Publication Date
WO1994027096A2 true WO1994027096A2 (fr) 1994-11-24
WO1994027096A3 WO1994027096A3 (fr) 1995-03-09

Family

ID=19720965

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1994/000099 WO1994027096A2 (fr) 1993-05-11 1994-05-09 Disque concentrateur d'energie solaire relie a un generateur de puissance

Country Status (6)

Country Link
CN (1) CN1127035A (fr)
AU (1) AU6580294A (fr)
DE (1) DE4493139T1 (fr)
IS (1) IS4160A (fr)
WO (1) WO1994027096A2 (fr)
ZA (1) ZA943198B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016170A1 (fr) * 1993-12-07 1995-06-15 Mauno Sakari Reiala Lentille solaire, son support et leur procede de fabrication; systemes de production et de stockage d'eau, d'electricite et de chaleur; et pompe hydraulique
CN102536707A (zh) * 2012-01-20 2012-07-04 孟忠阳 槽式太阳能综合利用系统
EP2525125A1 (fr) * 2011-05-19 2012-11-21 Huhnseal AB Joint axial de haute température et procédé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104847606B (zh) * 2015-03-19 2018-01-16 湖北工业大学 碟式光热燃气混合发电装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182222A (en) * 1936-11-23 1939-12-05 Stuart A Courtis Solar heater
US2460482A (en) * 1945-02-20 1949-02-01 Abbot Charles Greeley Solar heat collector
US4175540A (en) * 1977-05-18 1979-11-27 Mel Modern Systems, Incorporated Solar energy collector
EP0015487A1 (fr) * 1979-02-27 1980-09-17 Nihon Chemical Plant Consultant Co., Ltd. Dispositif pour l'utilisation d'énergie solaire
US4275710A (en) * 1979-11-16 1981-06-30 Sanford Stevenson Solar collector
US4333446A (en) * 1980-05-16 1982-06-08 Smyth Aerodynamics, Inc. Solar concentrator
US4335578A (en) * 1980-05-30 1982-06-22 Ford Aerospace & Communications Corporation Solar power converter with pool boiling receiver and integral heat exchanger
WO1987003038A1 (fr) * 1985-11-14 1987-05-21 Fred Parker Birch Raccord souple destine a relier deux tubes
EP0377140A1 (fr) * 1989-01-05 1990-07-11 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Système de raccordement pour le liquide caloporteur de collecteurs solaires
WO1993001457A1 (fr) * 1991-07-05 1993-01-21 Goede Gabor Materiel pour l'exploitation de l'energie solaire

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182222A (en) * 1936-11-23 1939-12-05 Stuart A Courtis Solar heater
US2460482A (en) * 1945-02-20 1949-02-01 Abbot Charles Greeley Solar heat collector
US4175540A (en) * 1977-05-18 1979-11-27 Mel Modern Systems, Incorporated Solar energy collector
EP0015487A1 (fr) * 1979-02-27 1980-09-17 Nihon Chemical Plant Consultant Co., Ltd. Dispositif pour l'utilisation d'énergie solaire
US4275710A (en) * 1979-11-16 1981-06-30 Sanford Stevenson Solar collector
US4333446A (en) * 1980-05-16 1982-06-08 Smyth Aerodynamics, Inc. Solar concentrator
US4335578A (en) * 1980-05-30 1982-06-22 Ford Aerospace & Communications Corporation Solar power converter with pool boiling receiver and integral heat exchanger
WO1987003038A1 (fr) * 1985-11-14 1987-05-21 Fred Parker Birch Raccord souple destine a relier deux tubes
EP0377140A1 (fr) * 1989-01-05 1990-07-11 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Système de raccordement pour le liquide caloporteur de collecteurs solaires
WO1993001457A1 (fr) * 1991-07-05 1993-01-21 Goede Gabor Materiel pour l'exploitation de l'energie solaire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016170A1 (fr) * 1993-12-07 1995-06-15 Mauno Sakari Reiala Lentille solaire, son support et leur procede de fabrication; systemes de production et de stockage d'eau, d'electricite et de chaleur; et pompe hydraulique
EP2525125A1 (fr) * 2011-05-19 2012-11-21 Huhnseal AB Joint axial de haute température et procédé
CN102536707A (zh) * 2012-01-20 2012-07-04 孟忠阳 槽式太阳能综合利用系统

Also Published As

Publication number Publication date
ZA943198B (en) 1995-01-11
DE4493139T1 (de) 1996-05-09
IS4160A (is) 1994-11-12
WO1994027096A3 (fr) 1995-03-09
AU6580294A (en) 1994-12-12
CN1127035A (zh) 1996-07-17

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