Selective black for absorption of solar energy
US4011190A · kind A · utility
24Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1975 |
| Grant date | Mar 8, 1977 |
| Priority date | — |
| Expiry date | Nov 24, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/256
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improved selective black particles for use in solar receivers are described. The improved selective blacks comprise small particles of a metal having a low emissivity which are coated with a thin layer of an optically dark material having high absorptivity and low reflectivity for solar wavelengths and which is transparent for higher wavelengths in the thermal range. The improved selective black particles can be applied, e.g., as a paint, to any surface suitable for a solar heat receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.