Polymer roof panel solar energy conversion device
View Patent ↗A solar energy conversion device comprises a solar collector configured to collect solar energy. The solar collector comprises a plurality of roof panels. Each of the panels comprises at least one roof sheet comprising at least one wall, and further comprises a substantially transparent thermoplastic polymer.
1. A solar energy conversion device comprising:
a solar collector configured to collect solar energy, wherein said solar collector comprises a plurality of roof panels, each of said panels comprising at least one transparent, multi-wall thermoplastic polymer roof sheet that is pre-stressed in a tensile membrane stress state;
a fluid in contact with a bottom surface of said solar collector; and
a chimney coupled to said solar collector to allow said fluid to flow between said collector and said chimney.
2. The solar energy conversion device of claim 1 , wherein said thermoplastic polymer comprises a material selected from the group consisting of polycarbonate, polyethylene, polymethyl methacrylate, polyvinyl fluoride and polypropylene.
3. The solar energy conversion device of claim 1 , wherein said roof sheet comprises at least one of a twin-wall roof sheet, a triple-wall roof sheet and a five-wall roof sheet, and wherein said roof sheet further comprises a cross-sectional configuration of said walls to support said roof sheet.
4. The solar energy conversion device of claim 3 , wherein said cross-sectional configuration comprises at least one of a box configuration, a tunnel configuration and an inclined configuration.
5. The solar energy conversion device of claim 1 , wherein each wall of said roof sheet has thickness in the range from about 0.4 mm to about 2 mm.
6. The solar energy conversion device of claim 5 , wherein each wall of said roof sheet has thickness in the range from about 0.5 mm to about 1.2 mm.
7. The solar energy conversion device of claim 6 , wherein each wall of said roof sheet has thickness in the range from about 0.6 mm to about 0.9 mm.
8. The solar energy conversion device of claim 1 , wherein said roof sheet has thickness in the range from about 10 mm to about 50 mm.
9. The solar energy conversion device of claim 8 , wherein said roof sheet has thickness in the range from about 12 mm to about 25 mm.
10. The solar energy conversion device of claim 9 , wherein said roof sheet has thickness in the range from about 15 mm to about 18 mm.
11. The solar energy conversion device of claim 1 , wherein each of said roof panels has a heat transfer coefficient less than about 3 W/m 2 0 K.
12. The solar energy conversion device of claim 1 , wherein each of said roof sheet comprises at least one coating layer disposed on at least one of a top surface and a bottom surface of the roof sheet.
13. The solar energy conversion device of claim 12 , wherein said at least one coating layer comprises at least one of a biocidal layer, an anti-reflective layer, a self-cleaning layer, an ultra-violet ray protective layer, a condensation protective layer and combination thereof.
14. The solar energy conversion device of claim 1 , wherein each of said roof sheets has a length of at least about 12 meters.
15. The solar energy conversion device of claim 1 , wherein said fluid comprises air.
16. A solar energy conversion device comprising:
a solar collector to collect solar energy, said solar collector comprising a plurality of roof panels, wherein each of said roof panels comprises at least one transparent polycarbonate twin wall roof sheet, wherein said at least one roof sheet has a length of at least about 12 meters, has a thickness in the range from about 15 mm to about 18 mm, and comprises at least one coating layer disposed on at least one of a top surface and a bottom surface of said roof sheet;
a fluid in contact with a bottom surface of said solar collector;
a chimney coupled to said solar collector to allow said fluid to flow between said collector and said chimney;
a turbine configured to be driven by said fluid; and
a generator coupled to said turbine for the production of power from the motion of the turbine;
wherein said at least one roof sheet is a pre-stressed sheet in a tensile membrane stress state.
17. The solar energy conversion device of claim 1 , further comprising a turbine configured to be driven by said fluid.
18. A solar energy conversion device comprising:
a solar collector configured to collect solar energy, wherein said solar collector comprises a plurality of roof panels, each of said panels comprising at least one curved, transparent, multi-wall thermoplastic polymer roof sheet;
a fluid in contact with a bottom surface of said solar collector; and
a chimney coupled to said solar collector to allow said fluid to flow between said collector and said chimney;
wherein said at least one curved roof sheet has a curvature of up to about 500 millimeters concave with respect to the bottom surface of the solar collector.