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This project aims to design an aesthetically pleasing and efficient Building Integrated Photovoltaic (BIPV) system that combines functional aspects of architecture with energy collection. The focus is on creating a design that is cost efficient, easy to produce, and suitable for existing buildings. The project includes literature review, CAD drafting, physical models, and performance analysis.
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TEAM AMERICABIPV System Jason Hegedus Greg Mikus Josh Miller Evan Schwartz 12/10/2008
Outline Problem Statement Conceptualization: assessment of customer needs and the resulting weight of importance Preliminary Design: brainstorming, sketches, re-design concepts Detailed Design: CAD drawings, detailed sketches and dimensions Production: bill of materials, engineering analysis
Problem Statement BIPV is the future of solar electricity and buildings. Rather than having separate elements for electricity production and building envelope (the roof, walls, windows, and doors), BIPV reduces cost and improves designer creativity by combining functions. Although the Solar D building envelope is still being conceived, this project can provide strategic information and support for the architectural design team. Emphasis in this project is on a thorough review of the literature and characterization of the kinds of BIPV systems that have already been developed, followed by the creation of new combinations or radically new ideas. Physical models, CAD drawings, wiring details, and performance analysis are all important aspects of this project. (from SEDTAPP website)
Revised Problem Statement An effective BIPV system combines functional aspects of architecture with energy collection. BIPV systems primarily rely on the solar power. To accurately design a BIPV system, our team must use CAD to draft a model of the house, and create in it a BIPV system. The focuses of our project are to create a design that is aesthetically pleasing. The second need is to make a final product which is efficient in collecting light from the sun, which will reduce (if not eliminate) the use of external electricity. The third and final aspect of the customer needs is to make the design cost efficient and easy to produce.
Customer Needs Aesthetically pleasing Efficient Creative Innovative Property Aligned Cost-efficient Easy to produce Suitable for existing “Solar D” house
Re-design Concepts • Solar panels • Roof • Siding • Overhangs/Awnings • Shutters • Lawn Gnomes • Solar capacitors • Basement • Solar water heaters • Along siding • Along gutters
Design Features • An awning over the porch be built • Optimization of solar collection • The inclination of the house does not accommodate the direction of the sun during its most brilliant stages
Design Features • The gutter system contains panels which collect sun and transport water. • Convenient and necessary location • Dual-purposed • Makes direct contact with the sun over a large surface area during its most brilliant stages • Connected to the house, so wiring can be easily managed.
Design Features • Solar lawn gnomes (and other lawn accessories) • Can be placed in open space and re-routed to areas outside the house • Could be self powered (i.e. lamp post) • Very radical
Material Analysis • Back-Contact Silicon PV Panels • All electrical components on back of cell – leaves more exposure to the sun
Material Analysis • Microinverters • All BIPV panels produce DC current – we need AC • A more compact, cost effective, and inexpensive way to produce AC
Material Analysis • Light-Concentrating PV Panels • Uses lens technology to concentrate sunlight onto panels • Increases power output to the equivalent of 326 suns
Material Analysis • Thin Film Panels • Silicon is expensive • Other materials are also expensive, but require much less material and are thus less costly.
Material Analysis • Solar Thermal Storage • AKA “Solar Capacitors” • Instead of selling electricity when you no longer need it anymore, you can store it • Still early on in research
Engineering Analysis http://www.altersystems.com/catalog/228-kw-gridtied-solar-system-with-evergreen-190-watt-solar-panels-and-fronius-ig-2000-p-1702.html Our decision is to go with a complete system from Alter Systems. The cost of an entire system is currently $14,257.57. The final cost will range from $7,100 to $9,980 including tax credits and incentives.
Final Conclusion • We as the united team of America feel that we have successfully designed a BIPV System which effectively accomplished our main goals: • Aesthetically appealing • Reduced external electricity • Cost effective • Easy to produce • We were able to incorporate our ideas and concepts into an appealing, multi-functional, green house.
