HELIOS and reconcentrators
The HELIOS computer code for modeling solar energy collection by reflecting systems has been evolving over the last two years. Recent extensions include application to reconcentrators and to the evaluation of heliostats at the Central Receiver Test Facility (CRTF) at Albuquerque, New Mexico. Data are now becoming available for detailed comparisons between HELIOS predictions and experimental data. Such comparisons are now used as an aid to heliostat evaluation. Here HELIOS predictions are compared with image data produced by 23 heliostats at the CRTF and with data from a single facet chosen partially because of exceptionally large distortion. Two dimensional surface slope errors and reflectance properties are necessary to explain the single facet results. The method of treating reconcentrators is presented. Comparisons with reconcentrator data are planned. More detailed facet-normal measurements are needed. Considerable two-dimensional error data are needed to explain fine structure in present data.
- Research Organization:
- Sandia Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 6273471
- Report Number(s):
- SAND-78-1600C; CONF-790541-18
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140702* -- Solar Thermal Power Systems-- Central Receiver
CENTRAL RECEIVERS
COMPUTER CODES
ERRORS
FLUX DENSITY
H CODES
HELIOSTATS
MATHEMATICAL MODELS
OPTICAL PROPERTIES
PERFORMANCE TESTING
PHYSICAL PROPERTIES
REFLECTIVITY
SOLAR FLUX
SURFACE PROPERTIES
TEST FACILITIES
TESTING
TWO-DIMENSIONAL CALCULATIONS