Method and apparatus for enhancing plant growth in greenhouses utilizing landfill gas
US6205704A · kind A · utility
47Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Mar 8, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G9/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An environmentally controlled greenhouse is located near a landfill site and uses the landfill gas to both heat the greenhouse and furnish a clean carbon dioxide enriched product gas to enhance plant growth. The clean CO.sub.2 system product gas is used to regenerate adsorber beds which remove undesirable constituents from the landfill gas. A portion of the landfill gas may also power an extraction steam turbine which heats the greenhouse with extraction steam. The system is controlled to enhance plant growth by adjusting the temperature and CO.sub.2 levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.