Calculation of the optical power profile for a solar bowl with an iris

Technical Report · Fri May 15 04:00:00 EDT 1987

OSTI ID:5999804

Anderson, R. M.; Obeyesekere, M.

This report develops analytical techniques for studying shallow spherical segment bowls that have an attached tracking iris. The report extends previous analytical models that were developed as part of the Crosbyton Solar Power Project for the case of spherical segment bowls. Three types of calculations are considered. First, effective apperture formulas are derived for a spherical segment bowl with an iris, and results are compared with the bowl without an iris. Secondly, analytical formulas are derived to determine spillage losses for shallow bowls. Finally, the powerful Ratio of Solid Angles (ROSA) computer code is extended to include solar profiles for a spherical segment bowl with iris. The report includes several plots comparing optical power concentration ratios for solar bowls with and without an iris. A complete listing of the extended code, ROSAIRIS, is given in the appendix. 29 figs.

• Research Organization: Texas Tech Univ., Lubbock, TX (USA). Dept. of Mathematics
• DOE Contract Number: AC04-83AL21557
• OSTI ID: 5999804
• Report Number(s): DOE/AL/21557-T13; ON: DE89015784
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
141000* -- Solar Collectors & Concentrators
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTER CODES
CONFIGURATION
EQUIPMENT
HELIOSTATS
MATHEMATICAL MODELS
OPTICAL DISPERSION
R CODES
SOLAR CELL ARRAYS
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR TRACKING
SOLAR TRACKING SYSTEMS
SPHERICAL CONFIGURATION