Building integrated photovoltaic conversion system implemented in both vision and spandrel areas

• US 7,845,127 B2
• Filed: 09/22/2009
• Issued: 12/07/2010
• Est. Priority Date: 09/23/2008
• Status: Active Grant

• Current Assignee: Architectural Glass and Aluminum Corporation, Inc.
• Original Assignee: Architectural Glass and Aluminum Corporation, Inc.
• Inventors: Brescia, Joe
• Primary Examiner(s): Glessner; Brian E
• Assistant Examiner(s): Smith; Matthew J
• Application Number:
  US12/564,686
• Publication Number:
  US 20100071749A1
• Time in Patent Office: 441 Days
• Field of Search: 521/733, 522/35, 136244-251
• US Class Current: 52/235
• CPC Class Codes: E04B 2/88 Curtain walls fixing of glass panes E06B3/54
• CPC Class Codes: E04B 2/885 comprising a supporting structure for flush mounted glazing panels
• CPC Class Codes: E04B 2/96 comprising panels attached to the structure through mullions or transoms E04B2/885 takes precedence
• CPC Class Codes: E04B 2/967 Details of the cross-section of the mullions or transoms E04B2/965 takes precedence
• CPC Class Codes: H01L 31/02021 for solar cells electrical connection means, e.g. junction boxes, specially adapted for structural association with photovoltaic modules H02S40/34
• CPC Class Codes: H02S 20/26 Building materials integrated with PV modules, e.g. façade elements H02S20/25 takes precedence
• CPC Class Codes: H02S 40/32 comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
• CPC Class Codes: H02S 40/34 comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
• CPC Class Codes: Y02A 30/60 Planning or developing urban green infrastructure
• CPC Class Codes: Y02B 10/10 Photovoltaic [PV]
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy
• CPC Class Codes: Y10S 136/291 Applications
• CPC Class Codes: Y10T 29/49623 Static structure, e.g., a building component
• CPC Class Codes: Y10T 29/49629 Panel

Abstract

A power generating system is integrated within an exterior shell or facade of a building structure. The system components—energy generating devices (which can be photovoltaic), control units and associated power/signal wiring are incorporated and operated within individual unitized curtain wall units making up the facade including both in vision and spandrel areas.

Claims

1. A building integrated power generating system comprising:

a plurality of unitized curtain wall elements adapted as part of an exterior shell for a building structure in both vision areas and spandrel areas;

wherein said unitized curtain wall elements are adapted to be hung from and situated in front of said building structure and span a vertical space that extends and covers both at least one vision area and one contiguous spandrel area;

a plurality of energy conversion devices integrated within said plurality of unitized curtain wall elements including a plurality of first energy conversion devices in said vision areas and a plurality of second energy conversion devices in said spandrel areas;

wherein said plurality of energy conversion devices are adapted to transform a first type of energy form into an electrical energy form;

wherein the power generating system is integrally incorporated within said plurality of unitized curtain wall elements spanning said vision areas and spandrel areas.

2. The building integrated power generating system of claim 1, wherein said energy conversion devices include photovoltaic modules.

3. The building integrated power generating system of claim 2, wherein said photovoltaic modules are amorphous silicon, monocrystalline silicon or polycrystalline based solar cell/modules.

4. The building integrated power generating system of claim 2 wherein said plurality of first energy conversion devices are included in at least 25% of said vision areas.

5. The building integrated power generating system of claim 2 wherein said plurality of second energy conversion devices are included in at least 50% of said spandrel areas.

6. The building integrated power generating system of claim 1 wherein said unitized curtain wall elements span a vertical space that extends and covers a continuous strip of vision areas and contiguous spandrel areas over multiple stories of the building structure.

7. The building integrated power generating system of claim 1 wherein said unitized curtain wall elements are pre-assembled into a width ranging from approximately 4 feet to 8 feet, and a height ranging from approximately ten feet to 15 feet.

8. The building integrated power generating system of claim 1 wherein each of said unitized curtain wall elements includes both vision and spandrel regions.

9. The building integrated power generating system of claim 1 said plurality of first energy conversion devices in said vision areas are of a first type having a first power performance characteristic, and said plurality of second energy conversion devices in said spandrel areas are of a second type having a second power performance characteristic that is different from said first power performance characteristic.

10. The building integrated power generating system of claim 1 said plurality of first energy conversion devices in said vision areas are arranged with a first spatial density, and said plurality of second energy conversion devices in said spandrel areas are arranged with a second spatial density that is different from said first spatial density.

11. The building integrated power generating system of claim 1 wherein a power output per unit area differs in said vision areas and spandrel areas.

12. The building integrated power generating system of claim 1 wherein said plurality of unitized curtain wall elements mate with adjacent vertical and horizontal counterpart unitized wall elements so as to seal said shell from air and water intrusions.

13. The building integrated power generating system of claim 1 wherein the plurality of interconnected unitized curtain wall units meet Underwriter Laboratories (UL) or other applicable local regulatory requirements associated with the building for building integrated power generation systems and does not require a separate inspection prior to operation.

14. The building integrated power generating system of claim 1, wherein said first form of energy includes at least one of:

1) electromagnetic energy;

     2) potential energy;

     3) kinetic energy;

     4) thermal energy; and

/or

     5) chemical energy.

15. The building integrated power generating system of claim 1 wherein said unitized curtain wall units include:

a) both vertical and horizontal framing members adapted to support a module associated with said photovoltaic energy conversion devices;

b) support brackets adapted to affix the units to a building floor slab; and

c) sealants and/or gaskets adapted to connect and isolate said module.

16. A building integrated photovoltaic power generating system comprising:

a plurality of unitized curtain wall elements adapted as part of an exterior shell for a building structure in both vision areas and spandrel areas;

wherein said unitized curtain wall elements are adapted to be hung from and situated in front of said building structure and at least some of said unitized curtain wall elements span a vertical space that extends and covers both at least one vision area and one spandrel area contiguous to said vision area;

a plurality of photovoltaic energy conversion devices integrated within said plurality of unitized curtain wall elements including a plurality of first photovoltaic energy conversion devices in said vision areas and a plurality of second photovoltaic energy conversion devices in said spandrel areas;

wherein the photovoltaic power generating system is integrally incorporated within said plurality of unitized curtain wall elements spanning said vision areas and spandrel areas.

17. The building integrated photovoltaic power generating system of claim 16 wherein a plurality of control units integrated within said unitized curtain wall elements mitigate the effect of shading on said photovoltaic energy conversion modules.

18. The building integrated power generating system of claim 17 wherein said control units each optimize a power output of at least one of said plurality of photovoltaic energy conversion devices.

19. A building integrated photovoltaic power generating system comprising:

a plurality of interconnected unitized curtain wall elements defining an exterior shell for a building structure in both vision areas and spandrel areas;

wherein said unitized curtain wall elements are adapted to be hung from and situated in front of said building structure and at least some of said unitized curtain wall elements span a vertical space that extends and covers both at least one vision area and one spandrel area contiguous to said vision area;

a plurality of photovoltaic energy conversion devices integrated within said plurality of unitized curtain wall elements including a plurality of first photovoltaic energy conversion devices in said vision areas and a plurality of second photovoltaic energy conversion devices in said spandrel areas;

wherein only a first subset of said interconnected unitized curtain wall elements contain photovoltaic energy conversion devices while a second subset of said interconnected unitized curtain wall elements do not;

said first subset of interconnected unitized curtain wall elements being further adapted with;

a) a pocket region configured for receiving an edge connector for said photovoltaic energy conversion devices;

b) a vertical conduit for routing wiring cables for said photovoltaic energy conversion devices;

c) one or more isolation gaskets and/or sealant to isolate said photovoltaic energy conversion devices;

d) a grounding element for grounding said curtain wall elements to a building structure;

wherein the photovoltaic power generating system is integrally incorporated within said plurality of unitized curtain wall elements spanning both said vision areas and spandrel areas.