Photovoltaic module for a roof with continuous fiber tape
Some embodiments of the present disclosure relate to photovoltaic module for use on a roof. In some embodiments, the photovoltaic module may include a solar cell and a polymeric continuous fiber tape. In some embodiments, the polymeric continuous fiber tape comprises a polymer and glass fiber. In some embodiments, the glass fiber is present in an amount greater than about 50% by weight based on a total weight of the polymeric continuous fiber tape. In some embodiments, the polymeric continuous fiber tape comprises an elastic modulus greater than 1 GPa and an optical transmission greater than 80%.
1. A roofing system, comprising:
a roof substrate; and
a photovoltaic module comprising:
a solar cell,
an encapsulant,
wherein at least a portion of the encapsulant is located above the solar cell, and
a first polymeric continuous fiber tape,
wherein the first polymeric continuous fiber tape is located above the solar cell,
wherein the first polymeric continuous fiber tape comprises
a. a polymer; and
b. glass fiber,
wherein the glass fiber is in an amount greater than about 55% by weight based on a total weight of the first polymeric continuous fiber tape; and
wherein the first polymeric continuous fiber tape comprises
a. an elastic modulus greater than 1 GPa; and
b. an optical transmission greater than 80%, and
wherein the photovoltaic module is located above the roof substrate so the first polymeric continuous fiber tape is located above both the roof substrate and the solar cell.
2. The roofing system of claim 1 , wherein the glass fiber is in an amount from 55% by weight to 70% by weight based on a total weight of the polymeric continuous fiber tape.
3. The roofing system of claim 1 , wherein the roof substrate comprises a class A fire resistance rating according to UL 790.
4. The roofing system of claim 1 , wherein the first polymeric continuous fiber tape comprises a flammability rating of V-2 to 5VA when tested according to UL 94.
5. The roofing system of claim 1 , wherein the first polymeric continuous fiber tape comprises a dielectric strength from 20 kV/mm to 50 kV/mm when tested according to ASTM D149.
6. The roofing system of claim 1 , wherein the optical transmission of the first polymeric continuous fiber tape is from 80% to 95%.
7. The roofing system of claim 1 , wherein the glass fiber comprises continuous glass fiber.
8. The roofing system of claim 1 , wherein the glass fiber comprises unidirectional glass fiber.
9. The roofing system of claim 1 , wherein the glass fiber comprises extruded glass fiber.
10. The roofing system of claim 1 , wherein the first polymeric continuous fiber tape comprises a flexure strength in a direction of the continuous glass fiber from 150 MPa to 500 MPa according to ASTM D7624.
11. The roofing system of claim 1 , wherein the polymer comprises polyolefin.
12. The roofing system of claim 1 , wherein the first polymeric continuous fiber tape comprises a thickness from 100 μm to 1000 μm.
13. The roofing system of claim 1 , wherein the first polymeric continuous fiber tape comprises a thickness from 200 μm to 500 μm.
14. The roofing system of claim 1 , wherein the photovoltaic module further comprises:
a second polymeric continuous fiber tape,
wherein the second polymeric continuous fiber tape is located on an opposite side of the solar cell than the first polymeric continuous fiber tape.
15. The roofing system of claim 1 , wherein the photovoltaic module further comprises:
a transparent sheet,
wherein the transparent sheet is located above the solar cell.
16. The roofing system of claim 15 , wherein the transparent sheet comprises glass.
17. A roofing system, comprising:
a roof substrate;
a first plurality of photovoltaic modules located above the roof substrate,
wherein each of the first plurality of photovoltaic modules comprises:
a solar cell; and
a second plurality of photovoltaic modules located above the roof substrate,
wherein each of the second plurality of photovoltaic modules comprises:
a first layer,
wherein the first layer is composed of a thermoplastic polyolefin;
a second layer,
wherein the second layer is composed of a continuous fiber tape;
a third layer,
wherein the third layer is composed of a thermoplastic polyolefin; and
a fourth layer,
wherein the fourth layer is composed of a continuous fiber tape.