Solar energy concentration. Annual progress report, 1 July--31 December 1974
Technical Report
·
OSTI ID:5002151
A concentrating solar heater based on the compound parabolic design was constructed and tested. The principle characteristics of the collector are that it has a concentration factor = 3, and an angular acceptance (full angle) = 38 degrees. The large angular acceptance implies that bi-annual adjustment of the collector orientation is sufficient to accept direct solar radiation. Experimental results from outdoor tests show good agreement with theory and confirm the expected improvement in performance resulting from concentration. Such performance would be useful for space conditioning applications in a temperature range where flat plate collectors are marginal (130F above ambient). (auth)
- Research Organization:
- Argonne National Lab., Ill. (USA)
- OSTI ID:
- 5002151
- Report Number(s):
- PB-242258; NSF/RA/N-75-024
- Country of Publication:
- United States
- Language:
- English
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