Desalination of salt water by solar energy means
US4135985A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 1977 |
| Grant date | Jan 23, 1979 |
| Priority date | — |
| Expiry date | May 31, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/01
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Desalination apparatus using solar energy comprises a main insulated container with a subsidiary preheating container next to it; the main container is covered with a transparent cover serving as a selective filter to provide "the greenhouse effect" and also as a condensation surface for water vapor, and this transparent cover incorporates a hollow space, for example by making the cover double skinned. The hollow space forms part of a syphon which automatically regulates the water levels, transferring salt water from a preheating container to the main container as the level in the main container falls due to loss by evaporation leading to condensation and withdrawal of the desalinated water. The hollow part of the transparent cover thus serves also to preheat the incoming salt water with the heat lost upon condensation by the vapor within the main container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.