Fabrication Of ZrCx/Zr And Cr-CrOx Films For Practical Solar Selective Absorption Systems

Y. Noguchi; K. Naka; A. Isao; K. Nakamura; S. Sawada; T. Tani; S. Gonda

doi:10.1117/12.933264

12 April 1982 Fabrication Of ZrCx/Zr And Cr-CrOx Films For Practical Solar Selective Absorption Systems

Y. Noguchi, K. Naka, A. Isao, K. Nakamura, S. Sawada, T. Tani, S. Gonda

Proceedings Volume 0324, Optical Coatings for Energy Efficiency and Solar Applications; (1982) https://doi.org/10.1117/12.933264
Event: 1982 Los Angeles Technical Symposium, 1982, Los Angeles, United States

Abstract

The developments of solar-selective absorption systems for the practical use of solar energy applications have been investigated. For the higher temperature use, 700 % 800°K, ZrCx/Zr films' with excellent heat-resistant characteristics were deposited on the stainless steel(SUS-304) pipes, 30 mm in diameter and 4500 mm in length, by reactive r-f sputtering of pure Zr cylindrical targets. The obtained collector surfaces exhibit the optical properties of a rÃ¢â‚¬Ëœ, 0.93 (in visible wave length region) and E ti 0.25 (at A = 3 % 4 μm) and heat-resistant durability at ti 900°K. An absorption tube is to be settled in an evacuated glass tube-type collector, coated with ITO selective transparent film, constructed in an Al parabolic plane mirror system for the solar - thermal electric power generator in the "Sunshine project". For the lower temperature use of the solar thermal energy, below 400 ~450°K, the Cr-CrOx composite films deposited on a thin Alfoil of 40 pm thick have been developed. Cr-CrOx composite films were deposited having a graded composition by reactively evaporating Cr metals in an oxygen atmosphere of oxygen partial pressure%of 10^-2 % 10^-3 Pa with a roll-coating system. The obtained optical characteristics are a % 0.9 in visible wave length region and c (ε,' 0.1 at λ = 6 ~ 10 μm. The products showing stable operating characteristics are capable to apply on the heating and cooling of buildings and other general uses.

Citation Download Citation

Y. Noguchi, K. Naka, A. Isao, K. Nakamura, S. Sawada, T. Tani, and S. Gonda "Fabrication Of ZrCx/Zr And Cr-CrOx Films For Practical Solar Selective Absorption Systems", Proc. SPIE 0324, Optical Coatings for Energy Efficiency and Solar Applications, (12 April 1982); https://doi.org/10.1117/12.933264

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available