Air-Stable Selective Surfaces for Solar Energy Collectors.

摘要

Air-stable selective surfaces for solar energy collectors are evaluated. The primary effort is an experimental evaluation of selective surface samples for continued exposure to air and its associated water vapor,carbon dioxide,and aerosols to temperature cycles from room temperature up to 150C. Collector performance with selective surfaces used on the absorber and on the cover windows is evaluated. In the previous report,the authors outlined the absorber coating design approach,including a preliminary list of candidate coating materials that appeared most promising based on previous research. The procedures for design evaluation were also discussed in detail. During this reporting period,they have completed the installation and checkout of the equipment needed for the experimental phases of the research and started the design study. The primary coating system to be used in the research is an automatic fast-cycle bell jar vacuum system.