Energy harvesting device

1. An energy harvesting device comprising:

a wind turbine;

a channel for directing wind to the wind turbine;

a solar receiver positioned on an internal of the channel for receiving sunlight entering the channel; and

wherein the channel bearing the solar receiver is rotatable around at least one axis.

2. The device of claim 1 , wherein the channel is configured to direct wind to a plurality of wind turbines.

3. The device of claim 1 , further comprising a solar concentrator for directing sunlight to the solar receiver.

4. The device of claim 3 , wherein the solar concentrator comprises a lens, optionally a Fresnel lens.

5. The device of claim 1 , further comprising an elongated trough defining the channel, the trough comprising:

a base;

a first elongated side and a second elongate side; and

an opening.

6. The device of claim 5 , wherein the wind turbine is positioned on the base of the trough, optionally mounted within an aperture of the base.

7. The device of claim 5 , wherein the solar receiver is positioned on the first side of the trough.

8. The device of claim 5 , wherein the second side of the trough comprises a solar concentrator.

9. The device of claim 5 , wherein the trough is rotatable about an axis running along the longitudinal length thereof.

10. The device of claim 5 , wherein the trough is rotatable about an axis orthogonal to the longitudinal length thereof.

11. The device of claim 1 , wherein the wind turbine comprises an axis of rotation parallel to wind flow therethrough.

12. The device of claim 1 , wherein the wind turbine comprises an axis of rotation perpendicular to wind flow therethrough.

13. The device of claim 1 , wherein the solar receiver comprises a photovoltaic (PV) cell and/or a solar thermal panel.

14. The device of claim 1 , wherein energy harvested by the wind turbine and/or the solar collector is converted to electricity.

15. The device of claim 1 , wherein the device is arranged such that the channel leads upwardly to the wind turbine.

16. A building having installed thereon a device of claim 1 .

17. The building of claim 16 , wherein the building is arranged to utilize solar and/or wind energy harvested by the device.

18. A method of enhancing the efficiency of a wind turbine, the method comprising:

channeling wind to the wind turbine through a channel comprising a solar receiver for receiving sunlight entering the channel, the solar receiver mounted on an interior surface of the channel; and

rotating a trough defining the channel to enhance solar irradiation of the solar receiver.