Device and a method for recovering heat from the soil
US4452303A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1981 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Aug 4, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/10
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A device and method for recovering heat from the soil and groundwater, comprise heat-exchanging means consisting of an inner tube, an outer tube and partitions forming longitudinal channels between said inner and outer tube. An inlet for heat-exchanging fluid and an outlet for heat-exchanging fluid are present for conveying a heat-exchanging fluid through said longitudinal channels. The heat-exchanging means are preferably placed in a perforated casing allowing passage of liquid but not of soil particles. The casing consists preferably of an outer casing tube and an inner casing tube, casing partitions providing longitudinal casing channels. For allowing passage of groundwater the outer casing tube and the inner casing tube are provided with perforations. Heat is recovered by passing a heat-exchanging fluid through the casing channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.