Omnium-G Parabolic Dish Optical Efficiency: A Comparison of Two Independent Measurement Techniques

Technical Report · Wed Oct 01 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/6774230· OSTI ID:6774230

Bohn, Mark; Gaul, Harry W.

Measurements made at SERI of the optical efficiency of the Omnium-G parabolic dish concentrator are described. Two independent techniques were used: the cold-water calorimeter method and the heat of fusion method. Results from both techniques agree quite well and indicate that the optical efficiency for a 10-cm receiver aperture is 25%. Optical efficiency measured in early 1979 was 37%, and in mid 1979 it had degraded to 21%. An optical alignment procedure is described that resulted in the increase in optical efficiency from 21% to the current value of 25%.

• Research Organization: Solar Energy Research Inst., Golden, CO (USA)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 6774230
• Report Number(s): SERI/TR-631-544
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
141000* -- Solar Collectors & Concentrators
ALIGNMENT
CALORIMETERS
COMPARATIVE EVALUATIONS
CONCENTRATING COLLECTORS
EFFICIENCY
ENTHALPY
EQUIPMENT
FUSION HEAT
MEASURING INSTRUMENTS
MEASURING METHODS
PARABOLIC COLLECTORS
PARABOLIC DISH COLLECTORS
PARABOLIC REFLECTORS
PERFORMANCE TESTING
PHYSICAL PROPERTIES
SOLAR COLLECTORS
SOLAR CONCENTRATORS
SOLAR EQUIPMENT
SOLAR REFLECTORS
TESTING
THERMODYNAMIC PROPERTIES
TRANSITION HEAT
alignment
calorimeters
comparative evaluations
concentrating collectors
efficiency
enthalpy
equipment
fusion heat
measuring instruments
measuring methods
parabolic collectors
parabolic dish collectors
parabolic reflectors
performance testing
physical properties
solar collectors
solar energy