WO2017059484A1

WO2017059484A1 - Solar reflector mount

Info

Publication number: WO2017059484A1
Application number: PCT/AU2016/050929
Authority: WO
Inventors: Trevor Powell
Original assignee: Trevor Powell
Priority date: 2015-10-07
Filing date: 2016-09-30
Publication date: 2017-04-13

Abstract

The present invention provides a solar reflector mount comprising: a reflector support portion, attaching or supporting means configured to hingedly or pivotally attach or support the reflector support portion to or on a surface, and adjusting means configured to adjust the angle between the reflector support portion and the surface. Such a mount arrangement is able to support a solar reflector in a required orientation, and without the need for the complex arrangements of the prior art.

Description

SOLAR REFLECTOR MOUNT

FIELD OF THE INVENTION The present invention is in the field of energy generation from the sun. More particularly, the invention is directed toward means for mounting solar reflector panels.

BACKGROUND TO THE INVENTION Solar energy collectors reliant on the reflection of solar radiation onto a target absorber are known in the field of renewable energy generation. Solar radiation is typically reflected, and also concentrated, by one or more mirrors appropriately orientated in the direction of the sun. The prior art describes a number of reflector mounting systems capable of maintaining a solar reflector in a desired orientation with respect to the sun.

Some prior art mounting systems allow for movement of a reflector about one or more axes so as to track the sun. Such means often comprise complex hinging or pivoting mechanisms to provide for the tracking, thereby adding to the expense and complexity of the overall installation.

Furthermore, given the need for hinging or pivoting of the reflectors it is necessary for the reflectors to be mounted above the ground surface so as to provide for the required clearances about the reflectors. Such arrangements require heavy duty support means, typically comprising a ground anchor portion, a main support member extending from the anchor, with a reflector support disposed on the main member. Given that the reflector surface is generally of significant area, bracing is often required to support the periphery of the reflector support.

Many prior art mounting systems have the further complexity of an integrated means for supporting an absorber above a reflector. Often, the absorber is held in position at a focal point by a network of beams connected to the reflector support.

Solar reflector mounting systems of the prior art are typically heavy, generally being constructed of steel so as to provide the necessary structural resilience. Often the main support member is firstly anchored into the ground, and a crane is then used to lift the reflector and reflector support onto the member. Construction is therefore necessarily complex and expensive, and in some installations not economically or technically feasible. It is an aspect of the present invention to overcome or ameliorate a problem of the prior art. It is a further aspect to provide a useful alternative to prior art solar reflector mounts. The discussion of documents, acts, materials, devices, articles and the like is included in this specification solely for the purpose of providing a context for the present invention. It is not suggested or represented that any or all of these matters formed part of the prior art base or were common general knowledge in the field relevant to the present invention as it existed before the priority date of each claim of this application.

SUMMARY OF THE INVENTION

In a first aspect, but not necessarily the broadest aspect, the present invention provides a solar reflector mount comprising:

a reflector support portion,

attaching or supporting means configured to hingedly or pivotally attach or support the reflector support portion to or on a surface, and

adjusting means configured to adjust the angle between the reflector support portion and the surface.

In one embodiment, the adjusting means is attached at a first end to the reflector support portion, and at a second end to the surface.

In one embodiment, the adjusting means is hingedly or pivotally connected at the first end to the reflector support portion, and hingedly or pivotally connected at the second end to the surface.

In one embodiment, the adjusting means is configured to alter the distance between a point of the reflector support portion and a point of the surface.

In one embodiment, the adjusting means has an effective length which is adjustable. In one embodiment, the surface is substantially horizontal or substantially vertical.

In one embodiment, the surface is a wall surface, a post surface, or a ground surface. In one embodiment, the reflector support portion has an upper edge and/or a lower edge, and the attaching means is configured to hingedly or pivotally attach the reflector support at or about the upper edge or the lower edge. In one embodiment, the adjustment means attaches to the reflector support portion in the region of the lower about 50% or about 25% of the reflector support portion, or in the region of the upper about 50 % or about 25% of the reflector support portion.

In one embodiment, wherein the reflector support portion has side edge(s), and the attaching means is configured to hingedly or pivotally attach the reflector support at or about the side edge(s).

In one embodiment, the reflector support portion is directly or indirectly connected to a hinging means or a pivoting means.

In one embodiment, the solar reflector mount is configured to incline the reflector support portion at angles greater than 90 degrees to the ground.

In one embodiment, the solar reflector mount comprises a first attaching or supporting means and a second attaching or supporting means configured to hinge or pivot opposing edges of the reflector support portion.

In one embodiment, the solar reflector mount comprises a surface anchoring portion. In one embodiment, the surface anchoring portion is dimensioned such that, in use, the surface anchoring portion extends beyond at least one edge of the reflector support portion.

In one embodiment, the surface anchoring portion is configured so as to engage with a substrate beneath the surface via one or more substrate engaging pins or piles.

In one embodiment, the reflector support portion is configured so as to support a substantially planar or low profile solar reflector.

In one embodiment, the solar reflector mount comprises an absorber supporting portion.

In one embodiment, the absorber supporting portion is connected to the substrate anchoring portion, or to the surface. In one embodiment, the absorber supporting portion is connected to the substrate anchoring portion, the absorber connecting portion is proximal to the lower edge of the reflector supporting portion, but not below the reflector support region.

In a second aspect the present invention provides a solar energy collection system comprising the reflector mount as described herein and a solar reflector.

In one embodiment, the system comprises two or more mounts configured to mount a single solar reflector.

In one embodiment of the system, the solar reflector is substantially planar and/or low profile. In one embodiment of the system, the solar reflector comprises a series of elongate reflectors angled and/or curved so as to focus light on a focal line.

In one embodiment of the system, some or all the reflectors have a reflective surface which is a discrete segment of a parabolic curve, the curve segments having a common focus.

In one embodiment of the system, the elongate reflectors are disposed at a fixed angle to the support portion.

In one embodiment the system comprises an absorber and one or more absorber support(s), wherein the absorber support(s) is/are configured so as to position the absorber generally along a focal line of the reflector.

In a third aspect the present invention provides a method for collecting solar energy, the method comprising the steps of:

providing the system as described herein,

adjusting the adjustment means such that the solar reflector is directed generally toward the sun, and

allowing the solar radiation to incide on the reflector. BRIEF DESCRIPTION OF THE DRAWINGS

FIG.1 is a diagrammatic sectional view of a system of the present invention comprising a preferred solar reflector mount. In this embodiment, the angle of inclination of the reflector support is alterable, and the absorber is supported by a discrete anchor means.

FIG.2 is a diagrammatic sectional view of a system of the present invention comprising a preferred solar reflector mount. In this embodiment, the angle of inclination of the reflector support is alterable, and the absorber and reflector support is supported by a common anchor means.

FIG.3 is a diagrammatic sectional view of a system of the present invention comprising a preferred solar reflector mount. In this embodiment, the angle of inclination of the reflector support is alterable, and the absorber is mounted by way of a member extending from the reflector support.

FIG.4 is a diagrammatic sectional view of a system of the present invention whereby the solar reflector is mounted on the wall of a building. FIG. 5 is a diagrammatic representation of a reflector array for which the present mounts are useful. The reflector array comprises a plurality of planar mirrors supported at predetermined angles so as to focus incoming solar radiation of an absorber.

FIG. 6 is a diagrammatic lateral representation of a reflector array for which the present mounts are useful. The reflector array comprises a plurality of curved elongate mirrors orientated at predetermined angles so as to focus incoming solar radiation to a point.

FIG. 7 is a diagrammatic lateral representation of a system of the present invention whereby the reflector array comprises a plurality of curved elongate mirrors orientated at predetermined angles so as to focus incoming solar radiation to a point. .

FIGS 8A and 8B are lateral diagrammatic views of a solar reflector support disposed at two different angles to the ground. The alteration in angle is achieved by lengthening or shortening a telescopic member. The reflectors in this embodiment are elongate, with the reflective surface of each being a segment of a parabolic curve such that all reflectors have a common focal line. FIG. 9 is a diagrammatic lateral representation of a system of the present invention configured to align the long axis of the reflectors along the north-south axis. This embodiment allows for hinging or pivoting of opposing edges of the reflector support, thereby allowing inclination of the reflector support to be continuously adjustable over 180 degrees.

FIG. 10 shows the system of FIG. 9 with the reflector support at various inclinations from sunrise to sunset.

DETAILED DESCRIPTION OF THE INVENTION

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, but may. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner, as would be apparent to one of ordinary skill in the art from this disclosure, in one or more embodiments. Similarly it should be appreciated that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

Furthermore, while some embodiments described herein include some but not other features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention, and from different embodiments, as would be understood by those in the art.

In the claims below and the description herein, any one of the terms "comprising", "comprised of" or "which comprises" is an open term that means including at least the elements/features that follow, but not excluding others. Thus, the term comprising, when used in the claims, should not be interpreted as being limitative to the means or elements or steps listed thereafter. For example, the scope of the expression a product comprising component A and component B should not be limited to products consisting only of components A and B. Any one of the terms "including" or "which includes" or "that includes" as used herein is also an open term that also means including at least the elements/features that follow the term, but not excluding others. Thus, "including" is synonymous with and means "comprising". The present invention is predicated at least in part on Applicant's finding that a substantially planar solar radiation reflector (as distinct from a trough-type reflector) may be oriented toward the sun using a surface such as the ground or the wall of a building as a substrate for attachment and/or support. To achieve the required reflector angle with reference to the incoming parallel rays of solar radiation, an adjustment means is provided with the reflector support. The adjustment means is typically adjustable in terms of effective length so as to adjust the angle of the reflector support (and accordingly the reflector) with reference to the incoming rays of solar radiation. Accordingly, in a first aspect the present invention provides a solar reflector mount comprising: a reflector support portion, attaching or supporting means configured to hingedly or pivotally attach or support the reflector support portion to or on a surface, and adjusting means configured to adjust the angle between the reflector support portion and the surface.

It has been surprisingly found that such a mount arrangement is able to support a solar reflector in a required orientation, and without the need for the complex arrangements of the prior art. In the prior art, many mounting arrangements maintain the solar reflector in an elevated position above the ground (typically on the end of one or more posts), and away from other structures such as buildings so as to provide the ability to rotate the reflector about an axis. The present invention departs from that dogma in the art by utilizing the ground, building walls and other existing surfaces along with an angle adjusting means to mount a solar reflector. It is proposed that mounts of the present invention provide for lower cost installation of solar reflectors given the lack of any need to provide a dedicated elevated mount (such as a post anchored into the earth). Furthermore, installation is simplified because there is typically no requirement to lift the reflector on top of an elevated mount with a crane or other lifting machinery.

The present mount is particularly applicable for a reflector that is substantially planar (as distinct from well-known trough-type reflectors), which may comprise a series of elongate mirrors configured to focus solar radiation along a focal line. Trough-type reflectors are very often used in solar energy applications, however the reflectors typically require complex mountings to allow for orientation toward the sun. The entire reflector must be elevated off the ground so as to be freely pivotable to allow a user to direct the trough toward the sun so as to maximize capture of solar energy. As a departure from this accepted dogma in the art, Applicant proposes a novel combination of a substantially planar reflector mount which is configured to support a substantially planar reflector, with the support being configured to hinge or pivot directly on a surface. These substantially planar reflectors have distinct upper and lower edges, the terms "upper" and "lower" being used with reference to the relative positions of the edges when the reflector is in normal use (i.e. in the process of capturing solar energy). In the present mount, an upper or lower edge may be supported by the attaching or supporting means. Where the lower edge of the reflector support is utilised, the attaching or supporting means may contact the ground to prevent slippage of the lower surface across the ground or sinking of the edge into the ground. Thus, the attaching or supporting means may comprise an anchor portion which may provide a broad face configured so as to engage with the ground in some manner. As will be understood, a broader face acts to better spread the downward load forces exerted by the reflector support thereby preventing sinking. A broader face will furthermore improve frictional engagement to reduced slippage. It will be understood that the term "ground" should not be strictly construed to mean only bare earth, but may also include substantially horizontal surfaces such as a paved area, a concrete slab, or a road surface and the like.

In embodiments utilizing the lower edge as a point of attachment or support, it is typical for the hinging or pivoting means to be disposed at or about the lower edge.

Where an upper edge of the reflector support is used as a point of support or attachment, the surface used in the support or attachment may be a building wall, or indeed any other substantially vertical surface such as a boundary wall, the side wall of a truck trailer, or the side of a large storage bin.

In embodiments utilizing the upper edge as a point of attachment or support, it is typical for the hinging or pivoting means to be disposed at or about the upper edge. Furthermore, an anchor portion may be provided to contact the surface upon which the mount is disposed. The anchor portion may be secured to the surface by any means deemed suitable by the skilled person including screws nut/bolt, masonry anchor and the like.

Substantially planar reflectors typically have lateral edges which may act as a point of support or attachment to a surface. In these circumstances (which are less preferred) the mount will be more complex given the need to provide one or more arms to keep the reflector mount a distance from the surface. For example, two arms may extend parallel from a wall toward the lateral edges of the reflector support, the arms forming a pivotal connection with the reflector support.

In one embodiment the attaching or supporting means is attached to or supports the reflector support in the region of the lower about 50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10% or 5% of the reflector support portion (where a lower edge is used), or in the region of the upper about 50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10% or 5% of the reflector support portion (where an upper edge is used). These portions toward the upper and lower edges provide for greater degrees of pivoting or hinging ability, or provide for easier implementation of the pivoting or hinging ability.

In one embodiment, the attaching or supporting means (including embodiments having a dedicated anchor portion) is configured so as to allow for the use of one or more fasteners in conjunction with the attaching or supporting means. In some embodiments, 3, 4, 5, 6, 7, 8, 9, 10, 1 1 , or 12 3fasteners are used, and the attaching or supporting means is configured so as to accommodate the number of fasteners. As an example of such configuration the attaching or supporting means may comprise one or more apertures to allow the passage of fasteners therethrough. For example, where the attaching or supporting means contacts bare earth, metal pins or piles may be urged through the apertures and into the earth so as to better secure the attaching or supporting means to the earth. In particular, the apertures may be in the form of angled passages which ensure that the fasteners are inserted into the earth at an angle. Angling of fasteners has been found to improve the stability of the mount overall.

The reflector support may or may not be secured to the attaching or supporting means, but in preferred embodiments there is some means for securing by way of fastener, clamp, welding or any other means deemed suitable by the skilled person. In some embodiments the attaching or supporting means is integrally formed with the reflector support in the course of manufacture. The hinging or pivoting means for allowing alteration of the inclination of the reflector support portion may be any deemed suitable by the skilled person. It is preferred that the hinging or pivoting means is secured to both the reflector support and the attaching or supporting means, this being achievable typically by way of a fastener such as a screw or a bolt with nut.

In embodiments where the lower edge of the reflector support rests on the attaching or supporting means, there is no need for a dedicated hinge or pivot means given that the lower edge of the reflector support means (and especially a corner of the edge) may pivot on a surface of the attaching or supporting means.

The mounting is preferably configured so as to minimise any shading of the reflector surface during use. Shading may be an issue, where the present mounts are installed so as to align a long axis of the reflector along the east-west axis, and facing the north (when installed in the southern hemisphere) or facing the south (when in the northern hemisphere). Thus, measures may be taken so as to configure the mount to avoid shading, and especially when the sun is low in the east or west. In such circumstances shading may be reduced where substantially planar reflector types are used with the present mounts. The present mounts allow for the angle of inclination toward the sun to be alterable. As will be understood, the angle required will be dictated by the angle of the sun in the sky at one point in time during the day, or an average angle of several points in time during the day, or an average over all of the day, or the angle of the sun at peak solar output (typically noon). In a preferred embodiment, the adjusting means allows for the angle to be alterable so as to allow a reflector to track the sun's angle of declination throughout the day. As will be understood by the skilled person, efficiencies for concentrating solar power applications are reliant on orientating the reflectors directly at the sun, such that the maximum solar radiation is captured and concentrated on the absorber.

In a preferred embodiment, the mount is configured so as to allow tracking of the sun throughout the day. In these embodiments, the adjusting means may facilitate multiple adjustments during the day. For example, the adjusting means may be screw driven (optionally configured to push a push rod) such that multiple small rotations of the screw are made throughout the day so as to provide for tracking of the sun. In other embodiments the adjusting means is automated by means of a motor, for example, thereby providing for continuous and accurate tracking of the sun. Alternatively, the adjusting means may entail the use of a hydraulic ram, a hydraulic actuator, a cam, a belt and pulley, a spur gear, a linear actuator, a chain drive or any other means deemed suitable by a person skilled in the art. In one embodiment of the mount, the adjusting means rests on or is connected to the reflector support portion. The adjusting means may act to not only achieve a desired change in angle of inclination but to also maintain the reflector support at the desired angle much like a brace. In one embodiment, the adjusting means extends away from the rear or the reflector surface and toward the surface upon which the mount is disposed (such as the ground or a building wall). At this point, it is to be understood that the surface may form a part of the mount. For example, the surface may be a supporting means such as where the reflector support is supported only by the ground at a lower edge. In that case, the edge of the reflector support is able to pivot on the ground. As will be understood, such embodiments are only practically operable where the ground is sufficiently robust so as to prevent sinkage or slippage of the reflector support.

The adjusting means may have a dedicated anchor portion allowing an end of the adjusting means which extends toward the ground to rest thereon, or to connect thereto. In other embodiments, an attaching or supporting means directed to supporting the lower edge of the reflector support extends underneath the reflector support for some distance so as to provide anchoring means for the adjusting means as well. The adjusting means may be configured to allow for the support portion to adopt a wide range of angles, and in some embodiments allow for adjustment over at least 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, or 85 degrees. Where the reflector support is highly inclined to the ground then an adjusting means disposed between the ground and the reflector support may be angled toward the vertical, and the adjusting means will contact the ground at a point proximal to the lower edge of the reflector support. Conversely, where the reflector support is set at a lower incline to the ground then the adjusting means may be angled toward the horizontal and the adjusting means will contact the ground at a distal to the lower edge of the reflector support. Thus, the ground contacting end of the adjusting means may be alternately fixable at a number of distances away from the lower edge of the reflector support. For example, an anchor plate for supporting the adjusting means may have a series of notches or depressions made along a line therein so as to allow for the lower end of the adjusting means to be disposed therein according to the angle of the reflector support. In such embodiments, a hinged or pivotal connection may be provided between the upper end of the adjusting means and the reflector support.

In other embodiments of the invention, the lower end of the adjusting means is pivotally or hingedly connected to the anchor, and the reflector support provides a series of notches or depressions to allow for the position of the upper end of the adjusting means to be fixed in alternate positions.

In one embodiment of the invention, both ends of the adjusting means are configured to remain fixed on the anchor or the reflector support. In that case, the effective length of the adjusting means is typically alterable to account for any change in angle of the reflector support. Alteration in the length of the adjusting means may be effected by any means deemed suitable by the skilled person. In one form of the mount, the adjusting means comprises two members capable of sliding past each other and alternately lock together and release so as to alter and fix the overall length. For example, the adjusting means may comprise two lengths of tubular steel with one capable of sliding within the other, and a locking pin insertable through the two lengths. In preferred embodiments, the adjusting means is configured to continuously track the sun throughout the day, the adjusting means is continuously adjustable and may comprise a hydraulic or pneumatic actuator, a screw jack or a worm drive. Where the angle of inclination of the reflector support is effected by altering the length of the adjusting means, the mount is configured so as to provide hinged or pivotal connection between (i) the anchor and the lower end of the adjusting means, and (ii) the upper end of the adjusting means and the reflector support. In a preferred embodiment of the invention the adjusting means is configured to not only support the reflector support portion over a range of inclination angles, but to also effect the alteration in angle. For example, the adjusting means may be, or may comprise, a lockable jacking mechanism with the jacking mechanism capable of increasing or decreasing the effective length of the adjusting means. The jacking mechanisms may be a scissor jack, a screw jack, a bottle jack, a pneumatic jack, a farm jack, or a hydraulic jack. Where the mount is disposed on the ground, the adjusting means may be positioned away from the lower end of the reflector support (which is proximal to the ground) and toward the upper end of the reflector support (which is distal to the ground). Typically, the upper end of the adjusting means connects to or supports the reflector support portion in the region of the lower about 80%, 75%, 70%, 60%, 55%, 50%, 45%, 40%, 35% or 30% of the reflector support portion. Where a short-throw jacking mechanisms is used (such as a scissor mechanism), the adjusting means will typically be more proximal to the lower edge of the reflector support given that the reflector support is only required to be moved relatively shorter distances to effect an angle change.

The present mounts may be configured so as to align a long axis of the reflector along the north-south axis, in which case the reflectors are required to be inclined at sunrise so as to be directed to the horizon in the east, directly upwardly at noon, and then directed to the horizon in the west at sunset. The adjusting means may therefore be configured to allow for the support portion to adopt angles of between 90 degrees and 180 degrees, and in some embodiments allow for adjustment over at least 95, 100, 105, 1 10, 1 15, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, or 175 degrees.

Configuring the mount so as to adopt angles of greater than 90 degrees may be achieved by any means deemed suitable by the skilled person having the benefit of the present specification. In one embodiment, two attaching or supporting means are provides with the first configured to attach or support the eastern edge of the reflector support portion, and the second configured to attach or support the western edge. Thus, at sunrise the reflectors are directed at the horizon in the east and the reflector support hinges or pivots about the eastern edge of the reflector support as the sun rises so as to track the sun upwardly during the morning. At noon, the function of the first attaching or supporting means becomes redundant as the reflector support portion is substantially horizontal to the ground. Once the sun commences its downward travel toward the western horizon in the afternoon the second attaching or supporting means acts to hinge or pivot with respect to the western edge of the reflector support portion.

Wind forces are a problem in the field of solar reflectors given the large reflector surface presented to the elements. A solar reflector system may be lifted from the ground under high wind conditions. Accordingly, in preferred embodiments the attaching or supporting means is configured so as to resist lifting away from the surface upon which the mount is disposed. The attaching or supporting means may be configured so as to be buried at least partially within the ground, or may have posts which may be secured into the ground in a similar manner to a fencing post. As an alternative, the attaching or supporting means may be secured into the ground using a series of long pins or piles insertable at an angle to the substrate surface. It is found that an attaching or supporting means secured in this way is very difficult to lift from the ground, and especially where multiple pins or piles are used and also where long pins or piles are used. Conveniently, a jack hammer or a sledge hammer may be used to drive long pins or piles into the ground.

The reflector support portion may be configured so as to support a substantially planar solar reflector. As used herein, the term "substantially planar or low profile" is intended only to exclude the well-known parabolic or curved reflectors such as trough reflectors and dish reflectors. Examples of substantially planar reflectors include thought based on Fresnel geometries. Non-limiting examples of substantially planar reflector-types are shown in FIGS. 5 to 8 herein. It will be noted that while a substantially planar reflector may comprise curved reflector surfaces, the overall form of the reflector can be contained within a relatively shallow rectangular prismatic volume.

The reflector support portion may be a simple elongate member, a series of simple elongate members, a grid, a frame, a solid sheet-like member, a series of solid sheet-like members. The invention is not limited to any particular type of support, with the skilled person being amply enabled to conceive of other useful support types given the benefit of the present specification.

The present mounts may further comprise an absorber supporting portion. Tube-type absorbers are known in the present art, and are typically configured to allow a heat transfer liquid (such as an oil, or water) to pass therethrough. The reflector concentrates solar radiation onto a focal line, with the absorber tube running along the focal line such that the heat transfer liquid is heated during passage. After heating, the heat in the transfer liquid is used to perform useful work (such as spinning a turbine). An anchor portion of the present mount or a dedicated anchor may provide a useful base upon which an absorber support may be connected. In such embodiments, the absorber support comprises a substantially upright member which may be bolted or otherwise fastened to the anchor. The upright member is curved or other configured so as to position a second end about the reflector focal line. The tube absorber is connected to this second end, to thereby position it correctly in the focal line. Reference is made to the embodiments shown in FIG. 2 herein. As an alternative, the absorber support may be connect to the reflector support. Reference is made to the embodiment shown in FIG. 3 herein. The present solar reflector mount may be configured for use in a solar energy collection system. Typically, a reflector is mounted on the reflector support means. In some embodiments an existing reflector support means (which was not originally provided for the purposes of the present invention) of the reflector assumes the role of reflector support portion of the present mount. Furthermore an absorber tube is typically connected to the absorber support portion of the present mount so as to run along the focal line of the reflector. In one embodiment of the system, the solar reflector comprises a fixed array of elongate reflectors extending in parallel rows. The system may further comprise an absorber located above the fixed array and extending parallel to the rows of reflectors and upon which incident solar radiation from all of the reflectors is reflected, the absorber optionally including a heat absorbing medium adapted to absorb heat from the reflected radiation.

In one embodiment of the system, the array of reflectors is supported by a support structure such that each row of reflectors is oriented at a respective fixed angle relative to the support structure. In one embodiment of the system, the reflectors are planar reflectors and/or curvilinear reflectors. Such reflectors may provide some of the advantages of linear Fresnel collectors and parabolic trough collectors. The fixed array of reflectors may be supported by a shallow, substantially planar structure configured so as to avoid shading by adjacent reflectors at low sun angles. Each reflector is positioned at a fixed angle adapted to focus sunlight onto an absorber. The aperture of the mirror surface of the system of the present invention is optimally positioned such that the system is always pointed generally toward the sun.

In one embodiment of the system, adjacent parallel rows of reflectors are separated by an air gap, this allowing for ventilation and cooling of the overall structure and also providing for a reduced effect of wind forces on the installation.

In one embodiment of the system the reflector comprises a sheet-like reflector, and a bracket configured to (i) maintain the reflector in a predetermined curvature, and (ii) attach the reflector to a mount. The reflector (or multiple reflectors) may be elongate, and two or more brackets are disposed along each reflector. The bracket may comprise an upper face having a predetermined curvature, which may be a segment of a substantially parabolic curve. The bracket may comprises an aperture configured to accept a fastener, the fastener configured to fasten the reflector to the bracket. The bracket may be substantially elongate and one end of the bracket is thicker than the other. The bracket may be comprised of a lower base and an upper reflector support. The lower base may be fabricated from sheet metal. In one embodiment, the upper surface of the upper reflector support has a predetermined curvature. The reflector may comprise an aperture configured to accept a fastener configured to retain the reflector on the bracket. The reflector may be stiffened (and optionally edge stiffened) and may be fabricated from a metallic material.

The brackets described in the embodiments supra may perform the role of reflector support in the present invention. Alternatively, the brackets may be supported by a discrete reflector support portion.

In embodiments of the system having a sheet-like reflector, the reflector is typically flexible, and so is curved upon assembly with the bracket to provide the predetermined curvature. The curvature may be maintained by fastening or otherwise adhering all or part of the reflector to all or part of the bracket, such means being more fully discussed more fully infra.

In other embodiments of the system having a sheet-like reflector, the sheet like material may be a substantially rigid material and preformed generally in accordance with a desired curvature. In these embodiments the bracket acts to prevent or limit deformation of the reflector by wind, heat, cold or other factor.

Embodiments of the system having a sheet-like reflector are a significant departure from prior art reflector assemblies which rely on extensive framing to support a series of heavy mirrors to form a required curved reflector surface. The combination of a light weight sheetlike reflector which is supported (and optionally retained) by a bracket having a curved upper surface.

In embodiments of the system having a sheet-like reflector, the reflector may be unitary such as a highly polished sheet metal, with aluminium being an exemplary material. In another embodiment the reflector is a composite material optionally having a polymeric material as a component. Suitable polymeric materials include polypropylene, polyethylene terephthalate, nylon, polythethylene and the like. A reflective layer may be deposited on the polymeric material by a vapour deposition method, including chemical vapour deposition or physical vapour deposition. Such methods may provide a very thin yet dense reflective surface. As will be understood by a person skilled in the field of vapour deposition, vacuum aluminization is one means by which a mirror coating may be applied to a substrate. In other embodiments of the system having a sheet-like reflector, the reflector is stiffened at an edge and/or at an intermediate point along the reflector. The stiffening in this context is for the purpose of preventing or limiting deformation of the reflector. For example, where the sheet-like reflector is elongate and supported by two brackets separated by a distance, the curvature may alter (or even completely flatten) in a region between the brackets. Given the light-focussing role of the reflector this will of course diminish the amount of solar radiation incident on an absorber. Stiffening improves the ability of the reflector to retain a defined curvature (such as a parabolic segment) over a distance.

Even where a reflector is inherently capable of retaining a profile between brackets, the profile may be altered by wind or thermal expansion of the material or supporting structures. Edge-stiffening has been found to provide a simple and low cost solution to deformation of the reflector between brackets.

The skilled person is entirely familiar with a number of techniques for stiffening a sheet-like material. For example, the material may comprise thickened regions (such as ribs) to improve resilience to deformation. Where the sheet-like reflector is a polymer, the thickened regions may be formed in the casting process to provide a unitary stiffened material. Alternatively, reinforcing means such as a metallic mesh or metallic ribs may be cast within the polymeric material to improve resilience to deformation. As another alternative, an elongate U-shaped cap may be fitted along opposing edges of the reflector, the cap having a greater resilience to deformation than the sheet-like material It will be understood that any stiffening means may be disposed at or about the edges of the reflector, and/or in central regions of the material.

In embodiments where the sheet-like material comprises or consists of a sheet metal, stiffening may be achieved by a folding or roll-forming process. For example, the metal sheet may be folded over itself (to form a flattened S-shape) in a central region of the sheet to provide an integral rib consisting of three layers of metal. In another embodiment, a shallow V-shaped or U-shaped profile may be formed to provide stiffening, and optionally the wall of the V-shape or U-shape may be pressed together. Alternatively, opposing edges of the sheet metal may be folded inwardly and onto the sheet to provide two layers of metal. It is not necessary that the edges are folded over completely, with a fold forming an angle of between about 10 degrees and about 170 degrees capable of providing some stiffening.

In one embodiment, the fold is made at an angle to conform to an angle provided by the bracket. Preferably, the angle of the fold is greater than or equal to about 90 degrees. A similar stiffening effect may be provided by rolling an edge into a curved profile.

Stiffening means which do not alter the reflective surface of the sheet-like reflector are preferred given that an uninterrupted reflective surface is provided. Edge-stiffening, the use of ribs and integral reinforcement are particularly preferred in that regard.

In one embodiment, the sheet-like reflector is a sheet metal layer bonded to a reflective layer. Thus, the sheet metal layer provides mechanical strength to assist in maintaining a required curvature, while the reflective layer acts to reflect incident solar radiation. The sheet metal layer is typically corrosion resistant, either inherently, or by the application of a coating such as zinc. Preferably, the sheet metal layer is a steel, coated with zinc or a zinc/aluminium alloy. An exemplary commercial product is Zincalume™ (Bluescope, Australia). In other embodiments of the system having a sheet-like reflector, the reflective layer of the reflector is preferably a highly reflective film. Such films (already known in the art) have reflective properties the same or similar to traditional glass mirrors, but are significantly lighter and less expensive than glass. Preferably, the reflective film has a solar weighted average of hemispherical reflectance of at least about 70%, 80% or 90%. One particularly suitable film is ReflecTech Mirror Film (Reflec Tech Inc, USA). This film is self-adhesive, and amenable to bonding onto a substrate sheet metal layer.

In other embodiments of the system having a sheet-like reflector, the reflector thickness may vary according to the material used, and also the distances between support brackets, the presence or absence of any stiffening means etc. Where the reflector is fabricated from a sheet metal material (such as Zincalume™, which is relatively resistant to deformation over long spans) a thickness of up to about 0.6 mm may be used.

Where pure aluminium materials are used, the reflector thickness may be in the range of 0.3 mm to 0.5 mm. Highly reflective purpose designed materials of this type are manufactured by companies such as Alanod GmbH & Co. KG (Germany) and Almeco S.p.A. (Italy). These materials have relatively low resistance to deformation and so would require brackets to be relatively closely spaced, and/or significant stiffening.

Where a plastic material is used, thicknesses of more than about 0.6 mm, or 1 .0 mm, or 1 .5 mm, or 2.0 mm, or 2.5 mm, or 3 mm may be required to resist deformation.

It is contemplated that thin films and flexible sheeting (including metal foils) may be utilized if placed under tension to resist deformation. For example, a polymeric film having a reflective material laminated thereon could be stretched across two brackets such that the film between the brackets is placed under tension.

For reasons of cost and practicality at least, high-tensile sheet steel with edge-stiffening is preferred. To avoid shadowing effects, the bracket is typically disposed beneath the reflector such that it abuts the underside of reflector

In all embodiments of the system, the reflector may take a generally elongate form, and may be substantially rectangular. In this way, a plurality of elongate reflector assemblies may be abutted along their long edges to form a substantially continuous reflective surface.

In other embodiments of the system having a sheet-like reflector, the bracket typically has a geometry and size such that it supports substantially the entire length or width of the reflector. Where the reflector is substantially elongate the bracket may extend the entire width (i.e. directly from long edge to long edge) thereby providing support along a line, or a band.

In other embodiments of the system having a sheet-like reflector, the reflector contacts an entire upper surface of the bracket. This embodiment provides a high degree of support for the reflector, and where the material is fixed to the bracket a decreased opportunity for the material to lift from the bracket in response to wind forces, for example. Accordingly, the upper surface of the bracket in such embodiments has a curvature which is the curvature desired for the reflective reflector material. In an exemplary embodiment, the curvature of the upper face of the bracket is a segment of a parabolic curve.

In other embodiments of the system having a sheet-like reflector, the reflector is fixed in some way to the upper surface of the bracket so as to inhibit lifting, which may disrupt the curvature of the material. In one embodiment, a fastener is used as a fixing means. The fastener may be of any type capable of mechanically linking the reflector to the bracket, although preferably providing significant resistance to lifting of the material from the bracket. Fasteners such as screws, pop rivets, press studs, split pins, and the like are all contemplated to be operable to various extents.

In other embodiments of the system having a sheet-like reflector, the reflector comprises one or more perforations through which a fastener may insert. As an alternative to fasteners, any suitable means may be used to bond the reflector to the bracket. For example, adhesives or plastic welding may be used. One particularly convenient adhesive means are the ultra-high bond (UHB) and very high bond (VHB) double-sided tapes supplied by 3M (USA). Such tapes are typically used in automotive and aerospace applications.

In other embodiments of the system having a sheet-like reflector, the fastener comprises a head region which is of sufficient dimension so as to inhibit or completely prevent the fastener pulling through the perforation and therefore dislodgement of the reflector from the bracket. Alternatively, the outside edge of the fastener may frictionally engage with the internal surface of the perforation in the reflector. A similar arrangement may be provided for the bracket receiving means, which may comprise a recess or aperture into which a fastener may be inserted. The recess may have a flanged fastener entry point, with the fastener having a terminus capable of catching on the flange in response to a pull-out force.

In other embodiments of the system having a sheet-like reflector, the bracket has a greater height at one end as compared with the other. In this context, the term "height" is intended to mean the distance from the most proximal lower face of the bracket to the upper surface of the bracket. This arrangement is amenable to embodiments whereby the upper surface of the bracket is a segment of a curve, and particularly a parabolic curve. The higher terminus of the curve segment may be disposed at or toward the bracket end of greater height, and the lower terminus of the curve disposed at or toward the bracket end of lesser height.

In other embodiments of the system having a sheet-like reflector, a reflector assembly may comprise 2, 3, 4, 5, 6, 7, 8, 9, 10 or more brackets. The brackets are generally evenly spaced with respect to the reflective reflector material so as to provide the most consistent support or retention of the reflector. Where the reflector is relatively small, or where it is resistant to deformation only two brackets may be required (for example, along two opposing edges). It will be generally more common for the reflector to be flexible and elongate, and requiring a series of brackets disposed along the length of the reflector. In other embodiments of the system having a sheet-like reflector, the bracket may be fabricated from any suitably rigid material(s), such as woods (including acetylated woods, with Accoya™ being an exemplary form), metals (such as cast or machined aluminum), plastics, or synthetic resins, as are known in the art, by standard techniques. For example, the bracket may be fabricated by injection molding or other suitable technique from commercially-available material such as thermo plastic polyurethane (TPU); ionomer resin; ethylene vinyl acetate (EVA); polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride (PVC); acrylonitrile-butadiene-styrene terpolymer (ABS); a polycarbonate and acrylonitrile-butadiene-styrene copolymer blend (PC/ABS). Other suitable materials and forming methods will be apparent to those skilled in the art.

The brackets may themselves be supported on simple parallel elongate members extending outwardly from a central line and in opposing directions.

Irrespective of the reflector type (i.e. whether in the form of a solid reflector or a sheet-like reflector, or any other type of reflector), particular advantage is gained whereby some or all the reflectors have a reflective surface which is a discrete segment of a parabolic curve, the curve segments having a common focus. In this embodiment, the curvilinear reflectors may be formed in a fixed array and define a substantially planar mirror surface, with the so- defined substantially planar mirror surface thereby capable of being oriented at a desired angle. Such embodiments provide for concentration of incoming solar radiation along a focal line, and also the ability (by simply altering the angle of the mount) to orientate the reflectors toward the sun. This embodiment is a greatly simplified form of adjustable solar reflector, yet surprisingly effective, inexpensive to produce, and easy to transport and assemble on site.

For ease of transport, the combination of reflectors and mount may be provided in portions, which are assembled on site. For example, the mount and the associated reflectors may be provided in a two-part arrangement where the parts are stacked on top of each other for shipping. During installation, the two parts are bolted together to form a single substantially planar reflector with mount.

In one embodiment, the system further comprises a secondary reflector located above the absorber and configured to reflect to the absorber any reflected radiation from the reflector array which does not strike the absorber. Once assembled, the system may be utilised so as to incide concentrated solar radiation onto the absorber. As a first step, the angle of inclination of reflector support should be adjusted by way of the adjusting means so as to maximise the amount of radiation caught by the reflector. The skilled person is entirely familiar with methods for deciding an optimal angle. The angle may be arrived at by purely empirical methods, and indeed this method would be preferred where the system is used in a developing nation or other context that theoretical methods may be outside the skill set of the installers. For example, a simple shadow stick extending perpendicular from the reflector support will be useful. The inclination of the reflector support may be adjusted such that the shadow made by the stick is of minimal length. The angle of inclination may be set at noon, when the opportunity to collect solar energy is the greatest.

In preferred embodiments of the system, automatic tracking means is provided. The tracking means may be an active means and comprise photosensors configured differentially so that they output a null when receiving the same light flux. Mechanically, they may be omnidirectional (i.e. flat) and aimed 90 degrees apart. The photosensors typically output into a microprocessor which in turn controls an electric drive means.

Alternatively, chronological tracking means may be implemented whereby a drive rotates at a set rate so as to track the movement of the sun across the sky (which, of course, occurs at a constant angular rate).

The system may be configured such that the system may be laid flat in a high wind so as to avoid damage. Wind sensors may be included to automate the process. The ability to avoid wind damage allows for the present system to be fabricated from light duty components, which may also be light in weight.

The light duty construction may obviate the need for expensive and/or heavy components such as large central torsion tubes, rotary joints, and large diameter bearings which commonly feature in prior art support systems.

The present invention will now be more fully described by reference to the following non- limiting examples. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

Turning to FIG. 1 there is shown a system of the present invention, comprising a preferred embodiment of the mount. The mount comprises a reflector support 10. The reflector support 10 is an elongate member, the long axis being coplanar with the page. Upon the reflector support 10 are a series of elongate rectangular mirrors (one mirror marked as 12). The longitudinal axis of each mirror is perpendicular to the plane of the page. In reality, more than six elongate mirrors are used. Each elongate mirror is supported by at least two reflector supports. For example, a support is typically disposed at regular intervals along the mirror so as to prevent any deformation of the mirror which would lead to imprecision in forming a focal line.

The reflector support 10 is connected at the lower edge to a hinge 14, the hinge 14 in turn connected to a concrete anchor 16 which is disposed on the surface of the ground 18. A series of piles (three of which are marked as 20) are driven at an angle through the anchor and into the underlying ground thereby securing the anchor. In reality, the piles 20 will be significantly longer than as shown in the drawings. It will be appreciated that the reflector support 10 (by virtue of the hinge 14) may be inclined at any desired angle. Generally the angle of inclination will be such that the maximum possible level of solar radiation incident on the system is concentrated on the absorber tube 22. As will be readily understood by the skilled person, the angle of inclination is generally dependent on the geographical latitude of the system installation.

The dashed lines indicated the reflection of incoming solar radiation (shown as the parallel dashed lines), and reflection thereof to the absorber tube 22 (shown as the converging dashed lines).

The reflector support is connected to a hydraulic jack 24 by way of the hinge 26. In this embodiment, the function of the jack 24 is two-fold: firstly to act as a brace and assume partial load of the reflector support 10 and associated mirrors 12, and also as an adjustment means allowing for the angle of inclination of the reflector support 12 to be adjusted so as to maximise capture of solar energy.

The lower end of the jack 24 is connected to a hinge 28, the hinge 28 in turn connected to an anchor 30. The hinges 26 and 28 allow for the jack 24 to freely lengthen or shorten as required to alter the angle of inclination of the reflector support 10. The anchor 30 is secured to the ground by way of piles 20. The absorber 22 is an elongate tube (the longitudinal axis being perpendicular to the plane of the page) through which a heat transfer fluid flows. The absorber tube 22 is mounted on the focal line of the mirrors 12 by way of support post 32. . Typically, a series of post supports 32 are disposed at regular intervals along the absorber tube.

An alternative form of the system is shown at FIG. 2 where a single anchor portion 36 is used to support both the reflector support 10 and absorber 22. The anchor 36 is an elongate concrete sleeper member secured into the ground with a series of piles 20. In this embodiment, hinge supports 38 are attached to the anchor 36. The use of simple sleeperlike anchors is allowed for given the overall low profile of the system. The low overturning moment and the lack of support posts provides for less reliance on conventional footings which typically consist of a deeply buried post which is stabilised with concrete. Another form of the system is shown in FIG. 3 where an absorber support 40 extends from the reflector support 10. The weight of the absorber tube causes the absorber support 40 to bow downwardly, thereby suspending the absorber tube 22 along the focal line formed by the mirrors 12. In this embodiment, the absorber support 40 is a single length of metal rod having a thickness sufficient to suspend the absorber at the required level.

A further form of the system is shown at FIG. 4 whereby the solar reflector is mounted on the external wall 41 of a building. In this case, an anchor 38 and hinge 14 are connected to the upper end of the reflector support 10. FIG. 5 shows one example of a solar reflector that is useful in the present systems. The reflector comprises a plurality of planar mirrors 60, mounted on a support 62. The mirrors 60 are supported at increasing angles (from the centre of the array to the periphery of the array). As will be noted from the figure, incoming solar radiation is reflected to as to incide on an absorber tube 64.

FIG. 6 shows another useful substantially planar reflector type having mirror surface 70 comprising a fixed array of curvilinear reflectors 72, and the path 73 of solar radiation reflected from the mirror surface 70 to a focus 74 at which is located an absorber of the system. Each curvilinear reflector 72 is a discrete segment of a parabolic curve, all such curve segments having a common focus. The curvilinear reflectors 72 are formed in a fixed array and define a substantially planar mirror surface, the array and its focal receiver being supported by a similarly planar structure 76. FIGS, 7, 8A and 8B shows a system of the present invention. Shown most clearly in FIG. 7, the reflector comprises multiple elongate sheets of highly polished aluminium (three of which are marked as 12). Each elongate reflector has a long axis running into and out from the plane of the page. Each reflector sheet 12 is supported and retained by a series of brackets 102 along its length. The sheets 12 are supported at increasing angles according to the distance from the rotational axis 26 of the support 10. An increased reflector angle (from the centre to the edge of the support 10) is provided by a greater overall gradient from the high end to the low end of the bracket 102. Thus, closer to the vertical centre of the support 10, the ratio of the high end to low end is relatively low, while for brackets used away from the vertical centre the ratio is relatively high.

The cross-sectional profile of each sheet 12 is a segment of a parabolic curve, with the functional result of all sheets 12 being a substantially parabolic reflector. By this arrangement, solar radiation is focussed along a focal line (which extends into and out of the plane of the page at the centre of the absorber 22such that the focussed solar radiation is incident upon its surface. The absorber 22 is supported by member 40, and also guy wires (not shown) anchored to the support 10. In reality, the system comprises multiple supports 10, multiple members 24, and multiple absorber supports 40 disposed parallel to each other and at even distances along the elongate reflectors 12. At each support 10, a bracket 102 is disposed so as to support the reflector 12 at the required angle. FIGS 8A and 8B shows the ability to vary the angle of inclination of the sheet reflectors 12 by varying the length of a telescoping member 24. The member 24 is fixed hingedly to the substrate 18 at a first end, and at a second end to the reflector support 10. FIG 8A shows the member 24 in a relatively long state such that the reflector support 10 is disposed normal to the substrate 18. FIG. 8B shows the member 24 in a shortened state so as to incline the reflector support 10 at an angle to the substrate 18.

Upon shortening the member 24, the support rotates about the hinge 14. The support 10 is also hinged at point 26 to allow for inclination of the support 10. It will be noted that the distance between the telescopic member mount 28, 30 and the support mount 14, 16 remains fixed. The dotted lines on this drawing represents the reflection of incoming radiation (represented by the parallel lines), to converge on the absorber 22. The remaining elements of FIGS. 7, 8A and 8B have reference numerals consistent with those of FIGS. 1 to 6. FIG. 9 shows an embodiment which is configured such that the elongate reflectors align with the north-south axis. This mount includes a second hinge 15 in addition to the first hinge 14 present in all previously described embodiments. Reference is now made to FIG. 10 which broadly outlines the operation of the system of FIG. 9 during the day. It will be noted that up until midday the reflector support hinges on the first hinge 14, until midday when the reflector support is parallel to the ground. After midday, the second hinge 15 acts to allow inclination of the reflectors toward the west. The hinges may be alternately engaged or disengaged by any means mean deemed suitable by the skilled person. For example, a hinge pin may be inserted or retracted by solenoid means. Alternatively the opposing reflector support edges may only pivot on a first and second support in which case engagement/disengagement means are not required. In that circumstance, the attachment point of the member 24 on the reflector support may be alterable between two positions, each slightly disposed from the central axis of the reflector support. In this way, the reflector support is alternately pivotable about opposing edges. The same effect may be achieved by providing two members attaching at opposing points on the reflector support. Extension of the first member acts to pivot the reflector support toward the east, and extension of the second support pivots the reflector toward the west.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the following claims, any of the claimed embodiments can be used in any combination.

Claims

CLAIMS:

1 . A solar reflector mount comprising:

a reflector support portion,

2. The solar reflector mount of claim 1 wherein the adjusting means is attached at a first end to the reflector support portion, and at a second end to the surface.

3. The solar reflector mount of claim 2 wherein the adjusting means is hingedly or pivotally connected at the first end to the reflector support portion, and hingedly or pivotally connected at the second end to the surface.

4. The solar reflector of any one of claims 1 to 3 wherein the adjusting means is configured to alter the distance between a point of the reflector support portion and a point of the surface.

5. The solar reflector of any one of claims 1 to 4 wherein the adjusting means has an effective length which is adjustable.

6. The solar reflector mount of any one of claim 1 to 5 wherein the reflector support portion has an upper edge and/or a lower edge, and the attaching means is configured to hingedly or pivotally attach the reflector support at or about the upper edge or the lower edge.

7. The solar reflector mount of any one of claims 1 to 6 wherein the reflector support portion is directly or indirectly connected to a hinging means or a pivoting means.

8. The solar reflector mount of any one of claims 1 to 7 configured to incline the reflector support portion at angles greater than 90 degrees to the ground.

9. The solar reflector mount of claim 8 comprising a first attaching or supporting means and a second attaching or supporting means configured to hinge or pivot opposing edges of the reflector support portion.

10. The solar reflector mount of any one of claims 1 to 9 comprising a surface anchoring portion.

1 1 . The solar reflector mount of any one of claims 1 to 10 wherein the reflector support portion is configured so as to support a substantially planar or low profile solar reflector.

12. The solar reflector mount of any one of claims 1 to 1 1 comprising an absorber supporting portion.

13. A solar energy collection system comprising the reflector mount of any one of claims 1 to 12 and a solar reflector.

14. The solar energy collection system of claim 13 comprising two or more mounts configured to mount a single solar reflector.

15. The solar energy collection system of claim 13 or claim 14 wherein the solar reflector is substantially planar and/or low profile.

16. The solar energy collection system of any one of claims 13 to 15 wherein the solar reflector comprises a series of elongate reflectors angled and/or curved so as to focus light on a focal line.

17. The solar energy collection system of claim 16 wherein some or all the reflectors have a reflective surface which is a discrete segment of a parabolic curve, the curve segments having a common focus.

18. The solar energy collection system of claim 16 or claim 17 wherein the elongate reflectors are disposed at a fixed angle to the support portion.

19. The solar energy collection system of any one of claims 13 to 18 comprising an absorber and one more absorber support(s), wherein the absorber support(s) is/are configured so as to position the absorber generally along a focal line of the reflector. A method for collecting solar energy, the method comprising the steps of:

providing the solar energy collection system of any one of claims 13 to 19, adjusting the adjustment means such that the solar reflector is directed generally toward the sun, and

allowing the solar radiation to incide on the reflector.