NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 2 of 1572
High-efficiency concentration/multi-solar-cell system for orbital power generation
Author and Affiliation:
Onffroy, J. R.(Honeywell, Inc., Minneapolis, MN, United States)
Stoltzmann, D. E.(Honeywell, Inc., Minneapolis, MN, United States)
Lin, R. J. H.(Honeywell, Inc., Minneapolis, MN, United States)
Knowles, G. R.(Honeywell Systems and Research Center, Minneapolis, Minn., United States)
Abstract: An analysis was performed to determine the economic feasibility of a concentrating spectrophotovoltaic orbital electrical power generation system. In this system dichroic beam-splitting mirrors are used to divide the solar spectrum into several wavebands. Absorption of these wavebands by solar cells with matched energy bandgaps increases the cell efficiency while decreasing the amount of heat which must be rejected. The optical concentration is performed in two stages. The first concentration stage employs a Cassegrain-type telescope, resulting in a short system length. The output from this stage is directed to compound parabolic concentrators which comprise the second stage of concentration. Ideal efficiencies for one-, two-, three-, and four-cell systems were calculated under 1000 sun, AMO conditions, and optimum energy bands were determined. Realistic efficiencies were calculated for various combinations of Si, GaAs, Ge and GaP. Efficiencies of 32 to 33 percent were obtained with the multicell systems. The optimum system consists of an f/3.5 optical system, a beam splitter to divide the spectrum at 0.9 microns, and two solar cell arrays, GaAs and Si.
Publication Date: Jan 01, 1980
Document ID:
19800064037
(Acquired Nov 30, 1995)
Accession Number: 80A48207
Subject Category: SPACECRAFT PROPULSION AND POWER
Document Type: Conference Proceedings
Publication Information: SEE A80-48165 21-44
Publisher Information: United States
Meeting Information: 15th Energy to the 21st century; August 18-22, 1980; Seattle, WA
Contract/Grant/Task Num: NAS8-33511
Financial Sponsor: NASA; United States
Organization Source: Honeywell, Inc.; Minneapolis, MN, United States
Description: 6p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ENERGY CONVERSION EFFICIENCY; SATELLITE SOLAR ENERGY CONVERSION; SOLAR CELLS; SOLAR COLLECTORS; SPACECRAFT POWER SUPPLIES; CONCENTRATORS; COST EFFECTIVENESS; ECONOMIC ANALYSIS; ENERGY GAPS (SOLID STATE); ENERGY TECHNOLOGY; SOLAR ARRAYS; SPECTRAL REFLECTANCE
Imprint And Other Notes: In: Energy to the 21st century; Proceedings of the Fifteenth Intersociety Energy Conversion Engineering Conference, Seattle, Wash., August 18-22, 1980. Volume 1. (A80-48165 21-44) New York, American Institute of Aeronautics and Astronautics, Inc., 1980, p. 371-376.
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 16, 2011
Contact Us