Optimization of solar-selective paint coatings. Final report, September 15, 1980-June 15, 1982

Technical Report · Tue Jun 01 04:00:00 EDT 1982

DOI:https://doi.org/10.2172/6550138· OSTI ID:6550138

McChesney, M. A.; Zimmer, P. B.; Lin, R. J.H.

The objective of this program was the development of low-cost, high-performance, solar-selective paint coatings for solar flat-plate collector (FPC) use and passive thermal wall application. Thickness-sensitive selective paint (TSSP) coating development was intended to demonstrate large-scale producibility. Thickness-insensitive selective paint (TISP) coating development was intended to develop and optimize the coating for passive solar systems and FPC applications. Low-cost, high-performance TSSP coatings and processes were developed to demonstrate large-scale producibility and meet all program goals. Dip, spray, roll, laminating and gravure processes were investigated and used to produce final samples. High-speed gravure coating was selected as the most promising process for solar foil fabrication. Development and optimization of TISP coatings was not completely successful. A variation in reflective metal pigment was suspected of being the primary problem, although other variables may have contributed. Consistent repeating of optical properties of these coatings achieved on the previous program was not achieved. However, a new method of achieving better control of coating components was conceived and preliminary development initiated. The new concept was described as an engineered pigment approach. The engineered pigment approach uses TSSP-coated metal foil particles instead of uncoated aluminum flakes in a liquid TSSP coating. The approach offers many advantages over the use of uncoated aluminum flakes: control of particle flatness, size, and thickness; control of the optical selectivity of each particle; and control of the liquid TSSP coating surrounding the coated particles.

• Research Organization: Honeywell, Inc., Minneapolis, MN (USA)
• DOE Contract Number: AC04-78CS14287
• OSTI ID: 6550138
• Report Number(s): DOE/CS/14287-T2; ON: DE83001278
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
141000* -- Solar Collectors & Concentrators
ABSORPTIVITY
AGING
ALUMINIUM
COATINGS
COST
DATA
DEPOSITION
DIP COATING
ELEMENTS
EMISSIVITY
EQUIPMENT
EXPERIMENTAL DATA
INFORMATION
MACHINE TOOLS
METALS
MILLING MACHINES
NICKEL
NUMERICAL DATA
OPTICAL PROPERTIES
OPTIMIZATION
PAINTS
PHYSICAL PROPERTIES
PIGMENTS
SOLAR EQUIPMENT
SPECTRALLY SELECTIVE SURFACES
SPRAY COATING
STABILIZATION
SURFACE COATING
SURFACE PROPERTIES
SURFACES
TOOLS
TRANSITION ELEMENTS