The design, testing and fabrication of an extruded, linear focus Fresnel lens
- Solar Engineering Applications Corp., San Jose, CA (USA)
The objective of this program is to design and fabricate an extruded, curved, linear-focus Fresnel lens for use in a photovoltaic module operating at 10X concentration. The extrusion process is the least expensive lens manufacturing process, producing a lens at approximately 10$$/m{sup 2}. A goal to achieve 70% optical transmission was set. When used in a module, the housing sides are planned to be co-molded with the lens. This provides the least expensive module design available today. A 7-inch wide lens has been designed, and tooling has been fabricated. Several trial extrusions have been made, with the best to date giving a 73% transmission. A post forming tool was designed and fabricated that improves the molded tooth profile to within 0.001 inch of the design. The achievement of over 70% transmission has shown that a photovoltaic system with an installed AC buss-bar electricity cost of under $$0.06/kWh can be produced. Solar Engineering Applications Corporation (SEA) is working on a second-generation extruded lens with the goal to achieve 80% transmission and incorporation into a module. 2 refs., 15 figs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA); Solar Engineering Applications Corp., San Jose, CA (USA)
- Sponsoring Organization:
- DOE/CE
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6626640
- Report Number(s):
- SAND-90-7032; ON: DE90014852
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
FRESNEL LENS
EXTRUSION
OPTICAL PROPERTIES
SOLAR CONCENTRATORS
COST
DESIGN
FABRICATION
LIGHT TRANSMISSION
MANUFACTURING
OPTICS
PERFORMANCE TESTING
EQUIPMENT
LENSES
MATERIALS WORKING
PHYSICAL PROPERTIES
SOLAR EQUIPMENT
TESTING
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes
141000 - Solar Collectors & Concentrators