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U.S. Department of Energy
Office of Scientific and Technical Information

Performance of evacuated solar collectors with Compound Parabolic Concentrators

Conference ·
OSTI ID:6722393
Compound Parabolic Concentrators (CPC) achieve the highest possible concentration for a given acceptance angle, permitting geometric concentration ratios up to about 2 in fixed solar collectors and up to about 10 in collectors with day-to-day tilt adjustments. Design, construction and test results are reported for several CPC collectors with evacuated receivers supplied by Corning Glass, by General Electric and by Owens-Illinois. Efficiencies of 45 percent at ..delta..T = 150/sup 0/K above ambient have been reached with a fixed collector. This collector accepts more than half of the diffuse radiation in addition to all of the direct beam, for at least seven hours per day.
Research Organization:
Argonne National Lab., IL (USA)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
6722393
Report Number(s):
CONF-780462-1
Country of Publication:
United States
Language:
English