Air operated underground cooler means with natural lift
US3970140A · kind A · utility
1Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1974 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Oct 11, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/11
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The difference in density between heated and unheated air is used to provide flow of air across a heat transfer means located underground. An underground passageway connects an inlet orifice with an outlet orifice for flow of ambient air therethrough. The passageway comprises at least one essentially vertical shaft, said vertical shaft terminating at the outlet orifice and containing proximate its lower end said heat transfer means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.