HIGH TEMPERATURE SOLAR ABSORBER COATINGS. PART II.
Abstract
The objective of this project was to develop solar absorber coatings stable up to 1000 C in a vacuum of 10 to the minus 6th power torr with solar absorptance of 0.9 and emittance of 0.1 at 1000 C. Significant progress toward achieving these goals was made during the past year. A coating system consisting of multiple layers of Al2O3 and molybdenum on a molybdenum substrate exhibited a solar absorptance of 0.91 with an emittance of 0.16 at 1000 F. It is expected that the solar absorptance of this system will be equally good at higher temperatures but the emittance will increase. Computer programs for a theoretical analysis of interference film systems have been prepared for both normal and oblique incidence of light on multilayer metal and dielectric film systems. Theoretical reflectance data for thin film systems computed for normal incident light were in good qualitative agreement with experiments. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1964
- Accession Number
- AD0455068
Entities
People
- John E. Janssen
- K. C. Park
- Roger N. Schmidt
Organizations
- Honeywell International, Inc.