Solar collector with blackened layer facing insulation
US4267218A · kind A · utility
4Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1979 |
| Grant date | May 12, 1981 |
| Priority date | — |
| Expiry date | Apr 11, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/13
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A solar collector has a surface turned toward the sun and forms a heat exchange cell which has at least one wall composed of sheet aluminum. A tramsmitting layer of such a wall or the absorption layer thereof is a black layer of aluminum oxide containing Ag or Sn and formed unitarily on the aluminum sheet, e.g. by a chemical or electrochemical process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.