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Title:
AIR FLOW GUIDE AND DENSIFIER ASSEMBLY FOR VERTICAL OR HORIZONTAL AXIS WIND TURBINE
Document Type and Number:
WIPO Patent Application WO/2019/197871
Kind Code:
A1
Abstract:
The present invention relates to a movable air flow guide and densifier assembly configured and dimensioned to guide and density a flow of air onto and through a wind turbine array structure comprising at least one vertical axis wind turbine or at least one horizontal axis wind turbine, said air flow guide and densifier assembly comprising: a substantially upright support structure, defining a first, substantially open, windward face, and a second, substantially open, leeward face, and an inner volume, said inner volume being adapted in size and configuration to house said wind turbine array structure; air flow guide and densifier means, disposed on the windward face of said substantially upright support structure; wherein said air flow guide and densifier means comprise at least one, and preferably a plurality, of interconnected air flow guide walls located about a periphery of the support structure on the windward face and which project outwardly from said periphery; and wherein said substantially upright support structure is mounted on a movable chassis.

Inventors:
DRAUX, Michel (20 Avenue de la Libération, Le Bousquet d'Orb, 34260, FR)
Application Number:
IB2018/052462
Publication Date:
October 17, 2019
Filing Date:
April 09, 2018
Export Citation:
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Assignee:
TURBOSAAM SARL (Rue de Genève 18, 1225 Chene-Bourg, 1225, CH)
DRAUX, Michel (20 Avenue de la Libération, Le Bousquet d'Orb, 34260, FR)
International Classes:
F03D1/02; F03D1/04; F03D3/00; F03D3/02; F03D3/04; F03D13/20; F03D13/40
Domestic Patent References:
WO2013110696A12013-08-01
WO2011128463A12011-10-20
Foreign References:
US20130287570A12013-10-31
Other References:
None
Attorney, Agent or Firm:
THURGOOD, Alexander (IP Galore, Centre d'Affaires Amarante3bis Rue Jean Bigot, Issoire, 63500, FR)
Download PDF:
Claims:
CLAIMS

1) Movable air flow guide and densifier assembly (1) configured and dimensioned to guide and density a flow of air onto and through a wind turbine array structure (2) comprising at least one vertical axis wind turbine (VAWT) (3, 3A, 3B) or at least one horizontal axis wind turbine (HAWT), said air flow guide and densifier assembly comprising: a substantially upright support structure (4), defining a first, substantially open, windward face (5), and a second, substantially open, leeward face (6), and an inner volume (7), said inner volume (7) being adapted in size and configuration to house said wind turbine array structure (2); air flow guide and densifier means, disposed on the windward face of said substantially upright support structure (4); wherein said air flow guide and densifier means (8) comprise at least one, and preferably a plurality, of interconnected air flow guide walls (9, 10, 11, 12) located about a periphery (9A, 10A, 11 A, 12 A) of the support structure (4) on the windward face and which project outwardly from said periphery; and wherein said substantially upright support structure (4) is mounted on a movable chassis

(13).

2) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said movable chassis is a vehicle trailer. 3) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said movable chassis (13) is a vehicle trailer having a first towbar (14) and optionally a second towbar, wherein said first towbar and second optional towbar are located respectively at a first trailer extremity (15) and corresponding diametrally opposed second trailer extremity.

4) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said movable chassis (13) comprises a generator (16) connected to said wind turbine array

structure (2).

5) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said movable chassis (13) further comprises at least one, or a plurality of, electrical charge storage means, connected to a generator (16). 6) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said movable chassis (13) further comprises position stabilizing means (17, 18) for stabilizing the position of the movable air flow guide and densifier assembly (1) when stationary.

7) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said movable chassis (13) further comprises tilting means (19, 20) for imparting one or more angles of tilt relative to a level to said chassis (13).

8) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said at least a plurality of interconnected air flow guide walls (9, 10, 11, 12) extend radially outwardly from a substantially convergent air outlet extremity (21) attached to said periphery (9 A, 10A, 11A, 12A) towards a substantially divergent air inlet extremity (22).

9) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said at least a plurality of interconnected air flow guide walls (9, 10, 11, 12) form a substantially funnel- shaped projection, said funnel-shaped projection having a first extremity of narrowed cross- section and a second extremity of a cross-section wider than the narrowed cross-section.

10) Movable air flow guide and densifier assembly according to claim 1, wherein said wind turbine array structure (2) comprises a plurality of vertical axis wind turbines (3, 3A, 3B), mounted substantially coplanar with said leeward (6) and said windward (5) faces, and mounted substantially orthogonal to a direction of wind flowing towards, or respectively away from, said respective windward (5) or leeward (6) faces.

11) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said wind turbine array structure (2) comprises a plurality of horizontal axis wind turbines, mounted substantially coplanar with said leeward (6) and said windward (5) faces, and mounted substantially orthogonal to a direction of wind flowing towards, or respectively away from, said respective windward (5) or leeward (6) faces.

12) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said substantially upright support structure (4) further comprises at least one stowable wind deflector vane (23, 24) mounted in a hinged relationship to an upright portion of said substantially upright support structure.

13) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said plurality of interconnected air flow guide walls (9, 10, 11, 12) is covered at a substantially divergent air inlet extremity (22) by a removable protective grill (25). 14) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said plurality of interconnected air flow guide walls (9, 10, 11, 12) is covered at a substantially divergent air inlet extremity (22) by a removable protective grill (25), said grill comprising two halves (25A, 25B), each half covering a respective half of said substantially divergent air inlet extremity (22).

15) Movable air flow guide and densifier assembly (1) according to claim 1, wherein said assembly (1) comprises at least a first lateral face (26), a second lateral face (27), and an upper face (28), and each of said first and second lateral faces (26, 27) and said upper face (28) is substantially covered by a covering to form a roof, and respective side panels for said assembly. 16) Movable air flow guide and densifier assembly according to claim 1, wherein said assembly comprises at least a first lateral face (26), a second lateral face (27), and an upper face (28), and each of said first (26) and second (27) lateral faces and said upper face (28) is at least partly covered by a covering selected from one or more solar panels, wooden panelling, shiplap, and camouflage, to form a roof, and respective side panels for said assembly.

Description:
AIR FLOW GUIDE AND DENSIFIER ASSEMBLY FOR VERTICAL OR HORIZONTAL AXIS WIND TURBINE

The present invention relates generally to wind turbines, in particular to vertical or horizontal axis wind turbines, and their use in the production of electrical energy. Wind turbine electrical generator systems are well known per se and several commercial products have been, at various times, made available to the market.

Vertical or horizontal axis wind turbine installations, also known as VAWT or HAWT, are generally located in a fixed location on rooftops, or on chimneys, masts, or other fixed structures which have been studied, prior to installation, for their suitability with respect to the predominant wind parameters and air flow at that location. This has necessarily restricted the implementation and widespread adoption of such VAWT or HAWT systems, since they require certain wind and air flow conditions to be met before they can be usefully deployed at any given site.

The present invention overcomes the restrictions associated with the implementation of VAWT or HAWT installations and additionally, fulfills a long felt need for versatile deployment of such VAWT or HAWT systems.

Accordingly, one object of the present invention is a movable air flow guide and densifier assembly configured and dimensioned to guide and density a flow of air onto and through a wind turbine array structure comprising at least one vertical axis wind turbine (VAWT) or at least one horizontal axis wind turbine (HAWT), said air flow guide and densifier assembly comprising: a substantially upright support structure, defining a first, substantially open, windward face, and a second, substantially open, leeward face, and an inner volume, said inner volume being adapted in size and configuration to house said wind turbine array structure; air flow guide and densifier means, disposed on the windward face of said substantially upright support structure; wherein said air flow guide and densifier means comprise at least one, and preferably a plurality, of interconnected air flow guide walls located about a periphery of the support structure on the windward face and which project outwardly from said periphery; and wherein said substantially upright support structure is mounted on a movable chassis. The substantially upright support structure, is generally a metallic or wooden frame, comprising a series of parallel spaced substantially upright struts joined together by substantially horizontal crossbars. For example, if the upright support structure is not made of wood, generally, each strut and each crossbar comprises a tube, such as a metallic tube of circular or square cross-section, wherein the ends of each crossbar are joined to a respective end or, as required or desired, a respective mid-section, of a strut. The struts and crossbars can be joined together by any suitable fixation means that provides the desired structural resistance, rigidity and flexibility. Generally, the struts and crossbars are attached to each other via welding or soldering. The struts and crossbars together form a three-dimensional framework, defining a first, substantially open, windward face, and a second, substantially open, leeward face. The leeward and windward faces of the upright support structure or framework also define an inner volume located within the limits of the upright support structure, said inner volume being adapted in size and configuration to house a wind turbine array structure. Consequently, the dimensions and size of the upright support structure are adapted to the size, dimensions and configuration of the wind turbine array structure that it is desired to install.

At least one, and preferably a plurality, of interconnected air flow guide walls is located about a periphery of the support structure on the windward face and which project outwardly from said periphery. The periphery of the support structure is either a real or virtual shape generally defined by a continuous or contiguous circuit of interconnected struts and crossbars viewed along a single plane, and in the case above, along a plane corresponding to the windward face. The air flow guide walls extend from the periphery, for example from a strut or crossbar of said windward face, towards a point outwards from said periphery. The air flow guide walls are interconnected, and in general, are connected one to another to form a continuous projecting wall that projects from the windward face outwardly of the support structure.

The phrases“air flow guide and densifier assembly”, and air flow guide and densifier means” as expressed in the present specification, claims and drawings, refer to an assembly and means that not only guides airflow over an array of vertical axis wind turbines or horizontal axis wind turbines, but also serves to increase the density of the flow of air through said array. In this way, it becomes possible to maximize the opportunities for air flow usage, and consequently the potential for electrical power generation, by the wind turbine array. Maximization of the potential air flow is obtained in part through a combination of the provision of interconnected air flow guide walls located about a periphery of the support structure on the windward face and which project outwardly from said periphery and providing for the substantially upright support structure to be mounted on a movable chassis. The movable chassis allows for the entire assembly to be moved around, not only from a first location to a separate, second location, distant from said first location, but also allows for the assembly to be moved around a given first location in order to bring the assembly into the direction of the wind and thereby optimize potential electrical generation output.

Accordingly, and in one embodiment, the movable chassis is a vehicle trailer. Whilst this is a preferred embodiment for the assembly, other movable chassis constructions or assemblies would be suitable and appropriate, for example, an autonomous or semi-autonomous movable chassis, such as a robot-driven chassis, or a chassis provided with a drive motor to move the chassis, are also envisaged.

Preferably, and in another embodiment, the movable chassis is a vehicle trailer having a first towbar, and optionally a second towbar, wherein said first towbar and second optional towbar are located respectively at a first trailer extremity and corresponding diametrally opposed second trailer extremity. Such a configuration enables flexible positioning of the assembly, allowing a vehicle to move the assembly by hitching said vehicle to the towbar at either extremity of the movable chassis.

In yet another embodiment, the movable chassis further comprises a generator connected to the wind turbine array structure. The generator can be chosen from any suitable electrical generator, said generator generally being connected to one or more transmission axles provided by the wind turbine array structure. Where only one generator is present, this will usually be connected to each transmission axle of each turbine via one or more synchronization belts or drive chains. The transmission axle of the wind turbine is responsible for transmitting the rotational energy provided by rotation of wind turbine rotors in the wind turbine array structure to the generator via said one or more synchronization belts or drive chains. Alternatively, where more than one generator is present, for example, where a generator is present for each wind turbine, then each turbine and

corresponding transmission axle of the wind turbine can be connected either directly, for example, with the transmission axle being mounted in direct rotational connection to the generator, or via respective separate and individual synchronization belts or drive chains.

In yet another embodiment, the movable chassis further comprises at least one, or a plurality of, electrical charge storage means, connected to at least one more generators. In this way, it becomes possible to store the electricity generated by the wind turbine array structure, and provide a mobile supply of such electricity which can then be released as desired to any suitably connected electrical consumption apparatus or alternatively distributed to a further electrical network distribution system. When referring to“electrical charge storage means” as indicated herein, such storage means as are known in the art, for example chargeable batteries, or accumulators, or other similar electrical charge storage systems, are considered suitable and appropriate.

In yet another embodiment the movable chassis further comprises position stabilizing means for stabilizing the position of the movable air flow guide and densifier assembly when stationary. The expression“position stabilizing means” as used herein is intended to signify means that enable the assembly to be stabilized on the ground once the assembly has been moved into the desired or required position for operation. Such stabilizing means are commonly used for fixing a movable chassis to a given point with respect to a ground surface, and can include, for example, stabilizing feet, tension wires, positioning wedges, chocks, and the like.

In yet another embodiment, the movable chassis further comprises tilting means for imparting one or more angles of tilt relative to a first level position of the chassis to said chassis. By“level”, it is to be understood that the assembly is positioned on a given level, for example on the ground, or the surface of a building such as a multi-storey carpark, parking lot, hill, open space, and the like, and that the assembly can be tilted from this first level position to another desired, tilted position, as may be deemed required and/or appropriate depending on the terrain on which the assembly is located, in order to orient the assembly into the appropriate position for optimized suitable air flow guidance and capture. The tilting means can be separate from, or alternatively, an integral part of, the position stabilizing means described above. For example, the position stabilizing means can be adjustable feet, which are located on or attached to the movable chassis and which can project outwardly thereof and be adjustable in height. Depending on the height and the outward distance at which said feet project, the height and tilt of the chassis can thereby be finely adjusted.

Alternatively, the tilting means can comprise any other suitable means for imparting an angle of tilt to the movable chassis, such as suitably directed and extendable one or more piston arms attached to the chassis and extending towards the ground. In such an example, the pistons would extend the arm towards the ground away from the chassis until they met the ground level, and continuous extension of the piston arm would then cause the chassis to tilt to a desired or required angle.

In yet another embodiment, the at least a plurality of interconnected air flow guide walls extend radially outwardly from a substantially convergent air outlet extremity attached to the periphery of the support structure on the windward face towards a substantially divergent air inlet extremity. In this way, the guide walls are convergent at the periphery of the support structure, and divergent at an outwardly projecting extremity. In a further embodiment, the at least a plurality of interconnected air flow guide walls form a substantially funnel-shaped projection, said funnel-shaped projection having a first extremity of narrowed cross-section and a second extremity of a cross-section wider than the narrowed cross- section.

One can understand from the above embodiments of interconnected air flow guide walls that these are configured and dimensioned to not only guide air flow towards the wind turbine array from an outer, windward facing side of the assembly towards a leeward facing side of the assembly, but also to increase the density of air flow as it moves through the assembly and corresponding wind turbine array structure.

In yet another embodiment, the wind turbine array structure comprises a plurality of vertical axis wind turbines, mounted substantially coplanar with both the leeward face and windward face, and also mounted substantially orthogonal to a direction of wind flowing towards, or respectively away from, said respective windward or leeward faces.

In yet another embodiment, the wind turbine array structure comprises a plurality of horizontal axis wind turbines, mounted substantially coplanar with the leeward and windward faces, and mounted substantially orthogonal to a direction of wind flowing towards, or respectively away from, said respective windward or leeward faces.

Usually, said wind turbine arrays are provided as a plurality of wind turbine rotors, mounted on a transmission axle. The transmission axle transmits rotational movement from the rotation of the wind turbine rotor to an appropriate generator system. Depending on whether the turbine array is a VAWT or a HAWT system, the transmission axles are mounted vertically within the support structure or horizontally, with each transmission axle in coplanar alignment with the preceding or subsequent transmission axle. Accordingly, the above two embodiments provide for suitable mounting, orientation and positioning of the wind turbine array within the assembly.

In yet another embodiment, the substantially upright support structure further comprises at least one stowable wind deflector vane mounted in a hinged relationship to an upright portion of said substantially upright support structure. The deflector vanes are optionally and advantageously provided to deflect incoming air flow onto the wind turbines, and are mounted on hinges so that they can be folded back, or stowed, onto the support structure, as required or desired, to allow air to pass more freely through the wind turbine array structure, or when deployed, to deflect air flow. The deflector vanes are generally arc-shaped, i.e. have a substantially arc-shaped profile that deflects oncoming air flow inwardly toward a corresponding wind turbine. Opposite-facing pairs of deflector vanes are advantageously provided to allow for air flow deflection both from a windward face, and a leeward face of the support structure, in which a deflector vane of each pair is mounted on respectively opposite-facing uprights of the support structure.

In still yet another embodiment, the plurality of interconnected air flow guide walls is covered at a substantially divergent air inlet extremity by a removable, or openable, protective grill. The grill is provided to advantageously protect the assembly from unwanted or undesired introduction of objects which might be borne on the air flow into the wind turbine array, and which might cause damage thereto, for example branches and the like, but also to protect the wind turbine array from willful damage or vandalism, and intrusion for example by wild animals or birds. Optionally, and advantageously, the leeward face can also be provided with such a protective grill to also protect that side of the assembly.

In yet a further embodiment, the protective grill comprises two halves, each half covering a respective half of said substantially divergent air inlet extremity. In a similar manner, the leeward face can also advantageously be provided with a grill comprising two halves.

The grill, either as a single element, or provided in two halves, has suitably dimensioned and configured openings to attain the desired objective, i.e. the openings in the mesh are suitably dimensioned to prevent ingress of objects , animals or birds dependent on the intended location of the assembly during operation.

In another embodiment, the assembly further comprises at least a first lateral face, a second lateral face, and an upper face, and each of said first and second lateral faces and said upper face is substantially covered by a covering to form a roof, and respective side panels for said assembly. As the assembly is movable, it would be advantageous for it to blend in with its surroundings, especially for example, when the assembly is positioned in a rural area, the countryside or a site of natural beauty. Additionally, providing a roof and sides to the assembly provides for more general protection of the various moving parts of the assembly from the elements, such as precipitation like rain, snow, sleet, hail and the like.

Accordingly, in yet another embodiment, the covering is advantageously selected from one or more solar panels, wooden panelling resembling a wooden shack, shiplap, and camouflage, to form a roof, and respective side panels for said assembly. In the case where solar panels are provided, these can advantageously be mounted on, or form part of the roof covering of the assembly, and can also optionally, and advantageously, be connected to the means for storage of an electrical charge to provide extra electrical power generation capacity in the event of insufficient air flow or wind to power the wind turbine array.

The invention will now be described in more detail, with reference to the accompanying figures, which are given for illustrative purposes only, and in which:

Figure 1 is a schematic representation of a windward face perspective view of an assembly according to the invention;

Figure 2 is a schematic representation of a leeward face perspective view of an assembly according to the invention;

Figure 3 is a schematic representation of a windward face perspective view of an assembly with coverings according to the invention;

Figure 4 is a schematic representation of a simplified cross-section of interconnected air flow guide walls and wind turbine array of the assembly according to the invention.

Turning now to the figures, the schematic perspective view shows a windward face of a movable air flow guide and densifier assembly (1) according to the invention. The assembly (1) comprises a wind turbine array structure (2) comprising at least one vertical axis wind turbine (VAWT) (3, 3A, 3B) or at least one horizontal axis wind turbine (HAWT). The assembly further comprises a substantially upright support structure (4), defining a first, substantially open, windward face (5), and a second, substantially open, leeward face (6), and an inner volume (7), the inner volume (7) being adapted in size and configuration to house the wind turbine array structure (2). The substantially upright support structure is made of tubular metal, for example, steel, or optionally a correspondingly robust and resistant alloy or even a suitable high impact plastics material, although steel is generally preferred. The substantially upright support structure is comprised of

interconnected upright struts and crossbars, arranged in respective parallel and orthogonal arrangement to provide a three-dimensional structure, an inner volume (7), a windward face (5) and a leeward face (6). The windward and leeward faces (5, 6) are represented by the planes formed by the dashed lines in Figure 4.

The wind turbine array structure (2) is illustrated schematically in Figure 2. It is mounted within, and occupies substantially all of, the inner volume (7). In Figure 2, the wind turbine array structure (2) comprises three vertical axis wind turbines, in substantially parallel and coplanar alignment with said windward (5) and leeward (6) faces. Each turbine is mounted on a threaded transmission axle and is held in place at a respective top and bottom of the upright support structure by a corresponding screw threaded nut which is threaded onto the threaded rod and which seats against a cover plate located between, and fixed to, respective top and bottom sets of crossbars. In the assembly represented in Figure 2, the transmission axle pierces through the top and bottom cover plates, and the threaded nut screws onto the threaded rod of the transmission axle to lock against said respective top and bottom cover plates. Optionally, and advantageously, a further threaded nut can be provided on the underside of the top cover plate, and on the top side of the bottom cover plate, to hold said plates in a predetermined position with respect to the threaded rod, which is configured to be allowed to rotate freely, for example via respective bearings, provided within the respective top and bottom cover plates. The free rotation of the threaded rod of the transmission axle allows for rotational force generated by movement of the wind turbine rotors, which are in a fixed relationship to said transmission axle, and in response to air flow through and over said rotors, to be directly transmitted to the transmission axle. Whilst the figures depict a vertical wind turbine array structure, the assembly can also be configured to contain a horizontal wind turbine array structure, in which parallel, spaced apart and coplanar threaded transmission axles would hold corresponding wind turbine rotors, and instead of top and bottom cover plates, said transmission axles would be located through respective lateral cover plates.

Figures 1 and 2 also show air flow guide and densifier means (8), disposed on the windward face of the support structure, said air flow guide and densifier means (8) comprising at least one, and preferably a plurality, of interconnected air flow guide walls (9, 10, 11, 12) located about a periphery (9 A, 10A, 11A, 12A) of the support structure (4) on the windward face (5) and which project outwardly from said periphery (9A, 10A, 11 A, 12 A). The aim of the interconnected air flow guide walls (9, 10, 11,12) is to guide an air flow coming onto the assembly and density said air flow onto the wind turbine array structure (2). The interconnected walls (9, 10, 11,12) extend outwardly from the periphery (9 A, 10A, 11A, 12A) of the upright support structure towards an exterior. The general shape and configuration of the interconnected walls (9, 10, 11,12) is such that said walls extend radially outwardly from a substantially convergent air outlet extremity (21) attached to said periphery (9 A, 10A, 11A, 12A) towards a substantially divergent air inlet extremity (22). The most visible aspect of this configuration is that the interconnected air flow guide walls (9, 10, 11, 12) form a substantially funnel-shaped projection, said funnel-shaped projection having a first extremity of narrowed cross-section and a second extremity, distant from said first extremity, of a cross- section wider than the narrowed cross-section.

The upright support structure (4) further comprises at least one stowable wind deflector vane (23, 24) mounted in a hinged relationship to an upright portion of said substantially upright support structure, as illustrated in Figure 4. These are designed so that they can deflect air flow when deployed, and not obstruct air flow when stowed away, e.g. by rotating the vanes against the upright support through a pivoting movement of the respective hinge mounts. In the configuration illustrated in Figure 4, said deflector vanes form a pair of opposing oriented, and opposing mounted vanes (23, 24), each vane when deployed facing substantially in a direction that is different and opposed to, the corresponding respective vane of the pair of vanes. In this particular configuration, and as illustrated by the arrowed lines in Figure 4, air flow, or wind, arrives substantially

orthogonally to the wind turbine array structure (2). On the windward side, deflector vane (23) deflects air flow onto a wind turbine increasing the corresponding air pressure at the surface of the wind turbine rotor, thereby increasing an imparted rotational speed to said rotor. In contrast, deflector vane (24), located on the leeward side of the assembly, creates an air flow that causes a depression which increases air flow speed away from the wind turbine, thus reducing drag resistance and optimizing the energy imparted to the wind turbine rotor.

Furthermore, and as illustrated in Figure 4, air flow that impinges on the interconnected air guide walls (9, 10, 11,12) is directed in a converging manner (31, 32) towards the wind turbine array structure (2). This also increases air flow density over and through the wind turbines (3, 3A, 3B), allowing the assembly to function under extremely low wind speeds, even in such low windspeed conditions that operation of a wind turbine would normally be ruled out as being mechanically or energetically ineffective.

Figures 1 and 3 illustrate a configuration of the assembly in which the substantially divergent air inlet extremity (22) is covered by a removable, or openable, protective grill (25). In these particular representations, the grill comprises two halves (25A, 25B), each half covering a respective half of said substantially divergent air inlet extremity (22). Each half is mounted on hinges (29, 30) located on respective side walls of the interconnected air guide walls, but the protective grill (25) could also be mounted in hinged attachment to an upper and lower air guide wall instead. Although not shown, a similar grill could also be provided, and mounted on, the leeward face of the upright support structure if so desired and in a similar manner instead of as shown in Figures 1 and 3.

Figure 3 also illustrates a further possible configuration of the assembly in which the assembly (1) comprises at least a first lateral face (26), a second lateral face (27), and an upper face (28), and each of said first and second lateral faces (26, 27) and said upper face (28) is substantially covered by a covering to form a roof, and respective side panels for said assembly. Preferably, the covering is selected from one or more solar panels, wooden panelling, shiplap, and camouflage, to form a roof, and respective side panels for said assembly. As illustrated in Figure 3, the upper face (28) is covered with a roof covering, for example, galvanized metal sheeting having ridges and troughs, of the type known and used to provide roofing for industrial buildings. The lateral faces are covered with wooden panelling, or a covering that resembles wooden panelling, with optional provision for an access door (33) in at least one lateral face (27) in order to allow access to the assembly behind the covering for maintenance and turbine configuration purposes.

The assembly is configured to optimize air flow usage and increase the variety of situations in which a VAWT or HAWT system can be implemented, other than just being attached fixedly to a building or mast structure. To that end, the substantially upright support structure (4) of the assembly is mounted on a movable chassis (13). In the representative and illustrative figures the movable chassis is a vehicle trailer. Additionally, and optionally, the movable chassis is a vehicle trailer having a first towbar (14) and an optional second towbar (14A), wherein said first towbar (14) and second optional towbar (14A) are located respectively at a first trailer extremity (15) and a corresponding diametrally opposed second trailer extremity (15A). The trailer comprises a basic chassis framework, at least one load-bearing axle (34) and wheels (35, 36) mounted rotatingly with the axle (34). Movement of the trailer into a corresponding desired or required position as a function of wind direction and exposure can thus be readily achieved, simply by either hitching one of the towbars (14, 14A) up to a vehicle and repositioning it via maneuvering of the vehicle, or else by manual maneuvering of the trailer (13).

Figure 2 shows another aspect of the assembly of the present invention. The movable chassis (13) comprises a generator (16) connected to the wind turbine array structure (2). The generator is used to generate an electric charge from the movement imparted to it via rotation of the transmission axle of the wind turbine array, whereby said rotational movement can either be directly coupled to the generator, or else connected thereto by one or more synchronization belts or drive chains. The generator is in turn connected to at least one, or a plurality of, electrical charge storage means, such as rechargeable batteries or accumulators, in order to store the generated electrical charge for later use. In addition, if the lateral (26, 27) faces and/or upper face (28) are covered at least partly in solar panels, the electrical energy generated by said solar panel covering can also be advantageously stored in said electrical charge storage means.

Figures 1 and 2 also show that the movable chassis (13) further comprises position stabilizing means (17, 18) for stabilizing the position of the movable air flow guide and densifier assembly (1) when stationary. As illustrated, such position stabilizing means comprise one or more extendible stabilizing bars or arms (17, 18), for example, made of metal such as steel, that is inserted into a corresponding housing tube(37, 38) provided on the chassis (13) of the assembly. In the illustrated example, the length of extension of an arm can be adjusted via positioning pings that can be inserted in transverse openings (39, 40) or holes made in the stabilizing bars (17, 18) and also made in the housing tubes (37, 38). Alignment of the holes in the bars with the holes in the housing tubes and pinning therethrough, for example with an appropriately shaped pin, allows for fixing the extension length of any given stabilizing arm. When the arm is not needed, the pin can be removed and the arm (17, 18) inserted completely into the housing tubing (37, 38) and stowed therein. An outward extremity of the extendible stabilizing bar or arm (17, 18) is fitted with a supporting foot, said foot being optionally provided with adjustable height setting means allowing the height of the foot from said extendible arm or bar to be adjusted such that the foot comes into contact with a surface level on which the assembly is positioned and thereby stabilizes the assembly. The adjustable height means can for example, be an adjustable piston, or a crick-activated jack, or even something as simple as an adjustable height jockey wheel.

The movable chassis (13) further also usefully comprises tilting means (19, 20) for imparting one or more angles of tilt relative to a level to said chassis (13). The tilting means can be identical to, or separate from, the adjustable height means associated with the position stabilizing means. For example, in the case an adjustable height foot attached to, or near the end of an extendible positioning arm or bar, the foot height could be adjusted to tilt or pitch the assembly away from the normal, i.e. away from the perpendicular to the ground, if that was so desired. In this way, it becomes but a simple matter of adjusting the height of the stabilizing feet to tilt the assembly to an angle of tilt that will optimize air flow through the wind turbine array structure.