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Investigation of High Temperature Performance of Thin Film, Solar-Thermal Energy Convertors.


PB265554

Publication Date 1976
Personal Author Masterson, K. D.; Seraphin, B. O.
Page Count 38
Abstract A high temperature reflectometer has been used to determine the high temperature performance of selective surfaces produced at the Albany Metallurgical Research Center of the U.S. Bureau of Mines. The specular reflectance for nine samples of the absorber-reflector-tandem type with absorber layers of ZrC(x)N(y) was obtained for temperatures up to 700C in some cases. A diffuse reflectometer of the integrating sphere type was used to characterize several samples that used fine grain texturing to enhance solar absorption. Specular reflectance measurements for such samples are unreliable because of the large fraction of light that is scattered out of the beam. During the final quarter, stainless steel substrates were coated with chemical vapor deposited molybdenum. Although these sample coatings did not have infrared reflectance as high as expected from previously obtained data, they will be useful for initial stability tests with the Bureau of Mines absorbers.
Keywords
  • Solar energy absorbers
  • Optical coatings
  • Reflectance
  • Specular reflection
  • Reflectometers
  • Infrared radiation
  • Stainless steels
  • Molybdenum
  • Zirconium inorganic compounds
  • Zirconium carbonitrides
  • Chemical vapor deposition
Source Agency
  • Bureau of Mines
NTIS Subject Category
  • 97N - Solar Energy
  • 46C - Optics & Lasers
Corporate Authors Arizona Univ., Tucson. Optical Sciences Center.; BUREAU OF Mines, Washington, D.C.
Document Type Technical Report
Title Note Summary rept. 30 Jun 75-29 Jun 76.
NTIS Issue Number 197713
Investigation of High Temperature Performance of Thin Film, Solar-Thermal Energy Convertors.
Investigation of High Temperature Performance of Thin Film, Solar-Thermal Energy Convertors.
PB265554

  • Solar energy absorbers
  • Optical coatings
  • Reflectance
  • Specular reflection
  • Reflectometers
  • Infrared radiation
  • Stainless steels
  • Molybdenum
  • Zirconium inorganic compounds
  • Zirconium carbonitrides
  • Chemical vapor deposition
  • Bureau of Mines
  • 97N - Solar Energy
  • 46C - Optics & Lasers
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