10 MWe Solar Thermal Central Receiver Pilot Plant mirror module corrosion, torque tube damage, and mirror reflectance survey, July 1984

Technical Report · Mon Jul 01 04:00:00 EDT 1985

DOI:https://doi.org/10.2172/5464338· OSTI ID:5464338

Decker, E V; Lopez, C W; Mavis, C L; Noring, J E

This report documents the results of the 1984 survey of mirror module corrosion, mirror reflective area, and torque tube damage at the 10 MWe Solar Thermal Central Receiver Pilot Plant. As of July 1984, 0.029% of the total reflective area of the heliostat field was corroded. However, the 1984 growth rate of the corrosion is much less than the 1983 rate: 92% for 1984 compared with 1000% for 1983. In the 1984 survey, the average reflective area for a heliostat was 420.94 square feet compared to the design value of 430.00 square feet. In addition, we determined that the reflective area must be measured after the edge seals are installed, and that ten data points on each module are sufficient to measure the reflectivity. Also, in the survey, we found thirty-five damaged torque tubes; these damages were due to gear box travel beyond the limit switches.

• Research Organization: Southern California Edison Co., Rosemead (USA); Sandia National Labs., Livermore, CA (USA)
• DOE Contract Number: AC04-76DR00789
• OSTI ID: 5464338
• Report Number(s): SAND85-8225; ON: DE85016226
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140702* -- Solar Thermal Power Systems-- Central Receiver
36 MATERIALS SCIENCE
360604 -- Materials-- Corrosion
Erosion
& Degradation
BARSTOW SOLAR PILOT PLANT
CHEMICAL REACTIONS
CORROSION
CSP
Concentrating Solar Power
DAMAGE
EQUIPMENT
FUNCTIONAL MODELS
HELIOSTATS
MIRRORS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PILOT PLANTS
POWER PLANTS
POWER RANGE 1-10 MW
REFLECTIVITY
SOLAR EQUIPMENT
SOLAR POWER PLANTS
SOLAR THERMAL POWER PLANTS
SURFACE PROPERTIES
THERMAL POWER PLANTS
TOWER FOCUS POWER PLANTS