EP2729740A1 - Installation de captation d'énergie solaire - Google Patents

Installation de captation d'énergie solaire

Info

Publication number
EP2729740A1
EP2729740A1 EP12740731.0A EP12740731A EP2729740A1 EP 2729740 A1 EP2729740 A1 EP 2729740A1 EP 12740731 A EP12740731 A EP 12740731A EP 2729740 A1 EP2729740 A1 EP 2729740A1
Authority
EP
European Patent Office
Prior art keywords
collector
converter
installation according
support
elevation
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.)
Withdrawn
Application number
EP12740731.0A
Other languages
German (de)
English (en)
Inventor
Johannes Krieg
Sidi Mohamed EZZAHIRI
Carlos Alberto INFANTE FERREIRA
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.)
Solfence Holding BV
Original Assignee
Solfence Holding BV
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 Solfence Holding BV filed Critical Solfence Holding BV
Publication of EP2729740A1 publication Critical patent/EP2729740A1/fr
Withdrawn legal-status Critical Current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
    • F03G6/068—Devices for producing mechanical power from solar energy with solar energy concentrating means having other power cycles, e.g. Stirling or transcritical, supercritical cycles; combined with other power sources, e.g. wind, gas or nuclear
    • 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
    • F24S23/71—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with parabolic reflective surfaces
    • 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
    • F24S23/79—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with spaced and opposed interacting reflective surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/45—Arrangements for moving or orienting solar heat collector modules for rotary movement with two rotation axes
    • F24S30/458—Arrangements for moving or orienting solar heat collector modules for rotary movement with two rotation axes with inclined primary axis
    • 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
    • F24S40/80—Accommodating differential expansion of solar collector elements
    • F24S40/85—Arrangements for protecting solar collectors against adverse weather conditions
    • 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
    • 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
    • Y02E10/47—Mountings or tracking

Definitions

  • the present invention relates to a solar power installation for collecting and converting solar radiation into useful forms of energy and more particularly to a system that is arranged to track the movement of the sun in order to maximize the amount of radiation collected.
  • the invention also relates to a method of control for such a device for following the sun in two different planes.
  • the amount of energy available to collect is determined by the overall area of the collector and its orientation with respect to the incident radiation. Other factors such as the waveband of the captured radiation will also be decisive in determining the amount of energy actually collected. Since the position of the sun changes throughout the day, for a given collector, orienting it towards the sun can significantly increase the amount of energy collected. Nevertheless, the mechanism required to move the collector adds significant complexity to the design and the energy required for movement reduces the net output. The choice of a mobile or static mounting is therefore a design trade-off.
  • the rotation of the earth causes the sun to follow a single path which can be effectively followed by movement in a single plane.
  • the azimuth plane For the sake of the following this will be referred to as the azimuth plane.
  • the relative positions of the sun and earth change causing the sun to appear higher or lower in the sky.
  • a collector In order to fully track the sun, a collector must also be able to move in a direction perpendicular to the azimuth plane, which we shall refer to as the elevation plane.
  • a collector may need to track 360o to follow the sun in the azimuth plane.
  • variations of 23.5o on either side of the equinox position are sufficient. For this reason, some collectors compromise by only tracking in a single plane.
  • the above-mentioned solar water heaters operate by absorption of the sun's heat by a suitable surface and the transfer of the heat by conduction to a circulating fluid.
  • Such devices are of relatively low cost and are rather effective at providing warm water for domestic purposes.
  • Photo-voltaic panels convert the sun's rays into an electric current usually through the use of photo-sensitive semiconductor materials. Their efficiency is relatively low and at present they are relatively costly. Tracking of such devices is therefore a useful way of increasing the efficiency thereby reducing pay-back time.
  • An advantage in cost may also be achieved by using a concentrator to focus the suns energy from a larger collector onto a relatively smaller photo-voltaic cell.
  • thermal cycle engine Another form of solar converter that may operate with a concentrator is the thermal cycle engine.
  • Such devices absorb the sun's energy as heat which is then converted into mechanical energy in a motor.
  • the most favoured motor for this purpose is the Stirling engine.
  • the concentrated rays of the sun are focussed on a thermal input area of the motor, causing the working fluid to be heated to a temperature sufficiently high for it to generate useful work.
  • Typical temperatures required in such devices range from 250-700 °C, depending upon the power output required.
  • a concentrating solar collector uses a parabolic reflector to focus the sun's rays onto a reception surface of a conversion module.
  • the reception surface may either be located on the concave side of the reflector close to the focal point or a secondary reflector may be provided and the reception surface may be located behind the parabolic receptor.
  • the reception surface may comprise an array of at least one photovoltaic solar cell or may be coupled to a thermal cycle engine with the mechanical output of the thermal cycle engine driving an electric generator.
  • the conversion module is arranged to move together with the parabolic reflector to track the sun.
  • the combined mass of the engine and reflector is relatively high leading to increased force and energy consumption in order to move the engine and collector together.
  • the fixed relationship of the reflector and engine is inconvenient when retraction of the reflector is required e.g. for storm protection or during assembly.
  • Other arrangements are known from WO2010/045269, DE 29606687, US5735123, US 4821516 and WO2009/158177, all of which suggest that the engine and collector should be connected for movement together.
  • a solar power installation comprising a collector, a converter and a support, wherein the collector and the converter are arranged to rotate together about a substantially fixed panning axis with respect to the support and the collector is arranged to be adjustable independently of the converter about an elevation axis with respect to the support.
  • the collector and converter together may be balanced for rotation about the panning axis with minimal power requirement. As the skilled person will understand, this motion will generally take place continuously as the sun's position changes from sunrise to sunset. Movement of the collector about the elevation axis need only be a slight adjustment on a daily basis to compensate for the changing elevation of the sun from winter to summer.
  • the invention is primarily directed to installations wherein the collector comprises a generally parabolic shaped reflector.
  • a most preferable form of collector is the
  • the term collector is intended to be used in its broadest possible context to mean any reflector or lens arrangement capable of collecting and focussing the energy of the sun.
  • the converter will be located at or adjacent to a focal point of the collector. According to a preferred embodiment of the invention, the converter comprises a
  • the Stirling cycle engine may have its heat receptor located at a focal point of the collector. Such devices are well known to be suitable for converting heat into mechanical energy which can be subsequently converted by dynamo or electrical generator into electrical energy. Waste heat from the heat sink may also be used for low grade heating purposes such as domestic hot water.
  • the skilled person will be well aware of other forms of converter that may also be used including photovoltaic devices that can convert the sun's energy directly into electrical energy and chemical cells such as solar driven high temperature chemical conversion processes which may use energy to produce hydrogen or methane. Nevertheless, the invention is particularly applicable to Stirling engines and other relatively massive devices, since their relative weight compared to that of the collector imposes additional considerations when designing a tracking system that is energy efficient.
  • the converter is located at a side of the collector distanced from the sun. This is preferably achieved through use of the above mentioned Cassegrain configuration.
  • a Stirling engine is used as the converter, only the hot side of the engine need be exposed to the sun with the remaining parts of the engine located in relative shadow. This facilitates operation of the Stirling engine since cooling of the cold side of the engine is better achieved in the shadow.
  • the converter is connected to the support for rotation about the panning axis. It will be understood that the connection need not be a direct connection and that the converter may be part of a converter assembly or construction that moves together with the assembly around the panning axis.
  • the collector may be connected to the converter for rotation about the elevation axis.
  • the collector may be connected to the converter assembly.
  • the important feature is that the collector is connected to the support through the medium of the converter or converter assembly and cannot rotate around the panning axis independently of the converter.
  • the elevation axis is arranged to be coincident with the focal point of the collector at which point the active region of the converter is located. In this manner, the collector may rotate up and down about the elevation axis while maintaining focus at the converter.
  • the installation further comprises a drive arrangement for movement of the collector with respect to the support.
  • the drive arrangement may comprise a panning drive and an elevation drive each controlling motion about the respective axis.
  • Such drives are generally known and may comprise a brushless motor and gear construction or a direct drive form such as a stepper motor. Both drives may be the same but preferably, due to the different characteristics of the respective motions, each drive can be optimised to its purpose.
  • the panning drive may be optimised for continuous motion while the elevation drive may be optimised for periodic operation.
  • the collector may also be provided with a counter-weight to provide a mass balanced system whereby the requirements of the elevation drive may be further reduced.
  • the installation further comprises a controller for controlling the drives and hence the position of the collector in order for it to track the motion of the sun.
  • controllers and their algorithms are generally known and may be based on feedback of the sun position or may be pre-programmed based on geographical data.
  • a Global Positioning System may be provided to generate the location, height and time information which is required for initial calibration of the installation. This may be part of the controller or coupled thereto for set-up purposes.
  • the collector has a retracted position in which it is rotated about the elevation axis to a generally downward facing position.
  • This allows the collector to assume a position of least wind resistance e.g. when high winds are expected.
  • a typical collector may have a diameter of up to 2 meters and high winds may cause significant damage to the collector, support and drive arrangement.
  • the concave side will preferably be oriented downwards in the retracted position. Nevertheless, for certain configurations the collector may have a retracted or protective position with the collector facing upwards. Appropriate arrangements may then be made for preventing collection of snow or rainwater.
  • the support comprises a hollow tubular structure which may be of steel, aluminium or composite materials.
  • conduits may be passed through the tubular structure for the transport of power and/or cooling fluids.
  • the installation may be arranged to be used at a predetermined latitude with respect to the earth's equator.
  • the support may comprise a base anchored to the ground or other appropriate structure and a generally inclined arm arranged at an angle with respect to the vertical, wherein the angle corresponds approximately to said latitude.
  • the arm may be angled in a direction corresponding approximately to the equinoxial zenith of the sun i.e. the position of the sun at its highest point on 21 March/September.
  • the panning axis will preferably be inclined perpendicularly upwards with respect to the arm. Although this represents one preferred configuration, it will be understood that other alternative orientations of the arm may also be used.
  • the invention also relates to a method of operation of a solar power installation as described above involving controlling the collector and the converter to rotate together about a substantially fixed panning axis with respect to the support in order to follow the path of the sun during the day and arranging the collector to be adjustable independently of the converter about an elevation axis with respect to the support in order to adjust the elevation of the collector to compensate for changes in the elevation of the sun.
  • the movement of the collector about the panning axis may correspond directly to the path of the sun and no compensation for elevation during the day may be required.
  • elevation motion may take place during the day. This may be incremental or continuous.
  • the above described invention is best adapted to relatively small installations having a collector area of 1 m 2 to 10 m 2 . Nevertheless, it will be understood the principles may also be adapted to larger installations.
  • Figure 1 shows a representation of a solar installation according to the prior art
  • Figure 2 shows a side view of first embodiment of the present invention
  • Figure 3 shows a perspective view of the embodiment of Figure 2
  • Figure 4 shows a rear view of the embodiment of Figure 2;
  • Figure 5 shows a side view of the installation of Figure 2 in a retracted position
  • Figure 6 shows a perspective view of an alternative embodiment of the invention
  • Figure 7 shows the installation of Figure 7 in a morning orientation
  • Figure 8 shows an installation according to another embodiment of the invention.
  • FIG. 1 shows a representation of a conventional solar installation 1 comprising a collector dish 2, a Stirling cycle engine 3, a dynamo 4 and a support 5.
  • a cable 6 connects the dynamo 4 to a frequency/voltage regulator 7 which supplies power to the electrical grid.
  • the dish 2 and the engine 3 are connected to one another by a rigid arm 8 which is pivoted to the support 5 for rotation about pivot 9.
  • the engine 3 is located in front of the dish 2 and at its focal point whereby the sun's rays are focussed onto its heat receptor. Further details of the operation of the Stirling cycle engine 3 and dynamo 4 will not be discussed as they may be otherwise conventional and are not themselves the subject of the present invention.
  • the dish 2 and engine 3 move as a single unit about the pivot 9 to keep the dish 2 pointing towards the sun. This movement takes place both from east to west and also in an upwards and downwards direction.
  • FIG. 2 shows a side view of a solar installation 10 according to a first embodiment of the present invention.
  • the solar installation 10 comprises a collector 12 formed of a parabolic dish 13 and a hyperbolic reflector 14 located close to the focal point of the dish 13 in a Cassegrain configuration.
  • a Stirling cycle engine 16 having its heat receptor 18 positioned at the focal point of the collector 12.
  • Such a Stirling engine may be as described in US 4821516, the contents of which are incorporated herein by reference in their entirety.
  • To the rear of the engine 16 is located a dynamo 20.
  • the engine 16 is mounted at a first bearing 22 to a support 24.
  • the bearing 22 allows the engine 16 to rotate about a panning axis P.
  • the dish 13 is attached to the engine 16 by a bracket 26 mounted to rotate about an elevation axis E coinciding with the heat receptor 18.
  • the reflector 14 is in turn rigidly connected to the dish 13 by struts 28.
  • the dynamo is connected via a cable 30 and frequency/voltage regulator 32 to the grid at 34.
  • Figure 3 shows a perspective view of the device of Figure 2 from the opposite side, indicating the angles and motion of the various elements.
  • the installation is located at a position corresponding to the zenith or highest point of the sun at noon at the equinox (spring or autumn).
  • the sun is perceived at an elevation of 30° with respect to the horizontal corresponding to a location having a latitude of around 60°.
  • the support 24 comprises a base 36 and an angled arm 38.
  • the support 24 is specifically adapted for installation at this latitude in that the arm 38 is also angled at 30° to the horizontal.
  • the collector 12 is pointed directly towards the sun.
  • FIG. 1 shows a controller 50 operatively attached to the elevation drive 42 and the pan drive 40.
  • Controller 50 provides the necessary signals to control the movement of the collector 12 as described above.
  • Figure 4 shows a rear view of the installation of Figure 3 taken in the direction R.
  • the aperture 46 through the collector 12 can be noted, as can the manner in which the bracket 26 connects the collector 12 to the engine 16 at the elevation drive.
  • the bracket 26 is a single arm asymmetrically mounted on one side of the aperture 46. The skilled person will understand that a symmetrical arrangement with two arms may also be provided for greater stability.
  • FIG 5 shows a similar view to that of Figure 2 with the collector 12 in a retracted position.
  • the collector 12 In this position, the collector 12 is rotated downwards to the maximum possible extent about the elevation axis E. In this position, wind forces on the collector 12 may be minimised and snow cannot build up within the dish 13.
  • the collector 12 can rotate downwards to a position in which the dish 13 approaches the support 24. This arrangement allows such downwards rotation without requiring cut-outs or the like in the dish 13 to accommodate the support 24. Such cut-outs not only reduce the available area for energy reception but also weaken the structure of the dish 13.
  • the installation 10 may also have a retracted or protective position in which the collector 12 is rotated about the elevation axis E to a position in which the dish 13 is facing upwards. Precipitation collecting in the dish may escape through opening 46 and dynamo 20 may be better protected in this manner.
  • the support 24 is a generally hollow structure formed as a variable profile box section.
  • the interior of the support 24 may carry pipes, conduits, cables and the like to and from the dynamo 20, engine 16 and drives 40, 42.
  • Figure 6 shows a perspective view of a slightly different embodiment in which the support 24 comprises an alternative tubular structure formed of a round hollow tube of constant section. This support may also be used in a similar manner to carry the necessary conduits and cables.
  • the collector 12 is directed towards the sun in the noon position and the elevation drive is slightly raised representing a summer orientation where the sun is above its equinoxial position.
  • FIG 7 there is shown the installation 10 of Figure 6 in which the collector is rotated eastwards about the panning axis P to a morning position.
  • FIG 8 shows an installation 100 according to another embodiment of the invention.
  • the installation 100 of Figure 8 comprises a collector 112 in the form of a parabola.
  • a Stirling engine 116 is placed in front of the collector 112 with its heat receptor 118 located at the focal point.
  • a dynamo 120 is provided on the rear side of the engine 116.
  • the dynamo 120 is mounted to a support 124 by a first bearing 122 and provided with a pan drive 140.
  • the collector 112 is connected by struts 128 to an elevation drive 142 carried by the engine 116 for rotation about elevation axis E.
  • the shape of the support 124 allows the collector 112 to be rotated downwards about axis E from an equinoxial position to a retracted position in which it is adjacent to the support 124. This position may be assumed automatically for wind speeds above a given value. It will be understood that the installation 100 may also have a retracted position with the collector facing vertically upwards. In that case a suitable provision for removing precipitation may be required.
  • An advantage of the design of Figure 8 is that reflection losses due to the second reflector required in a Cassegrain configuration are eliminated. Nevertheless, a portion of the collector 112 lies in the shadow of the engine 116 and support 124. For a Stirling cycle engine, efficiency may also be reduced since its heat sink will be located in the sun. For other forms of converter, this configuration may be more advantageous.

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)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention se rapporte à une installation de captation d'énergie solaire (10) comprenant : un collecteur (12); un convertisseur (16), et un support (24). Le collecteur (12) et le convertisseur (16) sont configurés de façon à tourner ensemble autour d'un axe panoramique (P) sensiblement fixe par rapport au support (24), et le collecteur (12) est configuré de façon à pouvoir être réglé indépendamment du convertisseur (16) autour d'un axe d'élévation (E) par rapport au support (24). Le mouvement indépendant du collecteur (12) permet de simplifier considérablement la conception du système de poursuite et de réduire par ailleurs l'énergie nécessaire pour le faire fonctionner. Ensemble, le collecteur (12) et le convertisseur (16) peuvent être équilibrés afin de tourner autour de l'axe panoramique (P) avec des exigences de puissance minimales.
EP12740731.0A 2011-07-05 2012-07-04 Installation de captation d'énergie solaire Withdrawn EP2729740A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2007048A NL2007048C2 (en) 2011-07-05 2011-07-05 Solar power installation.
PCT/NL2012/050473 WO2013006054A1 (fr) 2011-07-05 2012-07-04 Installation de captation d'énergie solaire

Publications (1)

Publication Number Publication Date
EP2729740A1 true EP2729740A1 (fr) 2014-05-14

Family

ID=46584296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12740731.0A Withdrawn EP2729740A1 (fr) 2011-07-05 2012-07-04 Installation de captation d'énergie solaire

Country Status (3)

Country Link
EP (1) EP2729740A1 (fr)
NL (1) NL2007048C2 (fr)
WO (1) WO2013006054A1 (fr)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US787145A (en) * 1903-12-12 1905-04-11 Edgar P Brown Solar motor.
US2460482A (en) * 1945-02-20 1949-02-01 Abbot Charles Greeley Solar heat collector
US3996917A (en) * 1974-03-27 1976-12-14 Malz Nominees Pty. Ltd. Solar heating apparatus
US4707990A (en) * 1987-02-27 1987-11-24 Stirling Thermal Motors, Inc. Solar powered Stirling engine
JP2681076B2 (ja) 1987-07-31 1997-11-19 尚次 一色 熱放射加熱スターリングエンジン
JPS6481105A (en) * 1987-09-22 1989-03-27 Mitsubishi Heavy Ind Ltd Solar collector
DE4336975A1 (de) 1993-10-29 1995-05-04 Erno Raumfahrttechnik Gmbh Energieerzeugungseinrichtung
DE29606687U1 (de) 1996-04-12 1996-06-27 Weber, Eckhart, 90403 Nürnberg Dish-Stirlingmotorsystem
JP2002098416A (ja) * 2000-09-22 2002-04-05 Mitaka Koki Co Ltd 太陽熱利用装置
US6818818B2 (en) 2002-08-13 2004-11-16 Esmond T. Goei Concentrating solar energy receiver
SE531566C2 (sv) * 2007-10-01 2009-05-19 Global Sun Engineering Sweden Solkoncentrator
US8776784B2 (en) 2008-06-27 2014-07-15 The Boeing Company Solar power device
WO2010034038A2 (fr) * 2008-09-22 2010-03-25 E-Cube Energy, Inc. Systèmes et procédés de captage d'énergie solaire comprenant des caractéristiques de configuration et/ou de suivi
EP2425098A2 (fr) 2008-10-13 2012-03-07 Infinia Corporation Systèmes, appareil et procédés pour moteur stirling

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Title
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Also Published As

Publication number Publication date
NL2007048C2 (en) 2013-01-08
WO2013006054A1 (fr) 2013-01-10

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