Maintaining a solar power module

Patent metadata

Field	Value
Publication number	US-10396708-B2
Application number	US-201715397205-A
Country	US
Kind code	B2
Filing date	Jan 3, 2017
Priority date	Jan 3, 2017
Publication date	Aug 27, 2019
Grant date	Aug 27, 2019

Abstract

A solar power system includes a plurality of solar power cells mounted on an outer surface of a spherical frame, the spherical frame including an inner surface that defines an interior volume; a heat sink that includes a hollow housing mounted within the interior volume of the spherical frame; and a phase change material positioned in the hollow housing of the heat sink, the phase change material thermally coupled to the inner surface of the spherical frame to receive heat from the outer surface of the spherical frame.

First claim

What is claimed is:

1. A solar power system, comprising:
a plurality of solar power cells mounted on an outer surface of a spherical frame, the spherical frame comprising an inner surface that defines an interior volume;
a heat sink that comprises a hollow housing mounted and enclosed within the interior volume of the spherical frame, the hollow housing fluidly isolating an inner volume of the hollow housing from a housing volume defined between the hollow housing and the inner surface of the spherical frame, the housing volume comprising an annulus cross-section; and
a phase change material positioned in, and fluidly sealed within, the inner volume of the hollow housing of the heat sink such that the phase change material is fluidly isolated from the housing volume of the interior volume of the spherical frame, the phase change material thermally coupled to the inner surface of the spherical frame through the hollow housing and the housing volume to receive heat from the outer surface of the spherical frame.

2. The solar power system of claim 1 , wherein the plurality of solar power cells comprise a plurality of photovoltaic (PV) cells.

3. The solar power system of claim 1 , wherein the phase change material comprises at least one paraffin wax.

4. The solar power system of claim 1 , further comprising at least one permanent magnet mounted within the hollow housing.

5. The solar power system of claim 4 , wherein the at least one permanent magnet is mounted within the hollow housing on a shaft that extends through a diameter of the spherical frame and the heat sink.

6. The solar power system of claim 4 , wherein the at least one permanent magnet comprises a hollow magnet that encloses the phase change material.

7. The solar power system of claim 6 , further comprising a magnetized heat transfer fluid disposed and flowable within the housing volume between the hollow magnet and the inner surface of the spherical frame based on at least one of (i) an amount of heat transferred from the outer surface of the spherical frame into the magnetized heat transfer fluid, or (ii) a magnetic field generated by the hollow magnet.

8. The solar power system of claim 7 , further comprising a plurality of baffles mounted within the interior volume of the spherical frame between the hollow housing and the inner surface of the spherical frame, the plurality of baffles forming at least one flowpath for the magnetized heat transfer fluid within the interior volume that is oriented along a circumference of the interior surface of the spherical frame.

9. The solar power system of claim 1 , further comprising at least one permanent ring magnet circumferentially mounted adjacent an outer surface of the spherical frame.

10. The solar power system of claim 9 , further comprising a magnetized heat transfer fluid disposed and flowable within the housing volume between the heat sink and the inner surface of the spherical frame based on at least one of (i) an amount of heat transferred from the outer surface of the spherical frame into the magnetized heat transfer fluid, or (ii) a magnetic field generated by the permanent ring magnet.

11. The solar power system of claim 1 , wherein the hollow housing is spherical, and the solar power system further comprises at least one permanent magnet mounted within the interior volume on a shaft that extends through a diameter of the spherical frame and the hollow housing, the at least one permanent magnet comprising a hollow magnet that encloses the phase change material, and the at least one permanent magnet is configured to rotate on the shaft.

12. The solar power system of claim 5 , wherein the at least one permanent magnet comprises a hollow magnet that encloses the phase change material.

13. The solar power system of claim 12 , further comprising a magnetized heat transfer fluid disposed and flowable within the housing volume between the hollow housing and the inner surface of the spherical frame based on at least one of (i) an amount of heat transferred from the outer surface of the spherical frame into the magnetized heat transfer fluid, or (ii) a magnetic field generated by the hollow magnet.

14. The solar power system of claim 1 , wherein the hollow housing is spherical.

15. The solar power system of claim 14 , further comprising at least one permanent magnet mounted within the housing volume on a shaft that extends through a diameter of the spherical frame and the hollow housing, the at least one permanent magnet comprising a hollow magnet that encloses the phase change material.

16. The solar power system of claim 15 , wherein the at least one permanent magnet is configured to rotate on the shaft.

17. The solar power system of claim 14 , further comprising at least one permanent ring magnet circumferentially mounted adjacent an outer surface of the spherical frame.

18. The solar power system of claim 17 , further comprising a magnetized heat transfer fluid disposed and flowable within the housing volume between the heat sink and the inner surface of the spherical frame based on at least one of (i) an amount of heat transferred from the outer surface of the spherical frame into the magnetized heat transfer fluid, or (ii) a magnetic field generated by the permanent ring magnet.

19. The solar power system of claim 18 , wherein the plurality of solar power cells comprise a plurality of photovoltaic (PV) cells.

20. The solar power system of claim 19 , wherein the phase change material comprises at least one paraffin wax.

Assignees

• Saudi Arabian Oil Co

Inventors

• Hassell Jr James Clyde
• Doval Luiz Gustavo

Classifications

• H02S20/30

  Supporting structures being movable or adjustable, e.g. for angle adjustment · CPC title

• H02S40/10

  Cleaning arrangements · CPC title

• Y02E10/50

  Photovoltaic [PV] energy · CPC title

• H02S40/42

  Cooling means · CPC title

• H01F1/012

  adapted for magnetic entropy change by magnetocaloric effect, e.g. used as magnetic refrigerating material (refrigeration systems using magnetic effects F25B21/00) · CPC title