NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Performance correlations of five solar collectors tested simultaneously outdoorsCollector thermal efficiency, and efficiency degradation with time were measured for 5 flat-plate solar collectors tested simultaneously in an outdoor solar collector test facility. Results indicate that by using collector performance parameters which account for diffuse isolation, outdoor data recorded on cloud days can be used as a measure of performance, as long as the ratio of direct to total insolation exceeds approximately 0.6. These outdoor results also show good agreement with thermal efficiency data obtained indoors in a solar simulator. Significant efficiency degradation occurred on only one of the five collectors exposed to outdoor conditions for a period of one to two years.
Document ID
19770008544
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Miller, D. R. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1976
Subject Category
Energy Production And Conversion
Report/Patent Number
E-8982
NASA-TM-X-73546
Report Number: E-8982
Report Number: NASA-TM-X-73546
Meeting Information
Meeting: Joint Conf. of the Intern. Solar Energy Soc. and the Solar Energy Soc. of Canada
Location: Winnipeg
Country: Canada
Start Date: August 15, 1976
End Date: August 20, 1976
Accession Number
77N15487
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available