Annular disposed stirling heat exchanger
US8950489B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2011 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Apr 16, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/0175
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus and method for cooling internal components of a down-hole well drilling apparatus. Components of the well drilling apparatus are encased in an inner canister that is further encased in an outer canister creating a void between the inner canister and the outer canister. Further, a plurality of moveable barriers is disposed between the inner canister and the outer canister and contains a heat transfer fluid. A plurality of agitators add mechanical energy to the plurality of moveable barriers compressing and expanding, while repositioning, the heat transfer fluid and creating a heat pump based on a reverse Stirling cycle to remove heat from the cooler inner canister and transfer the heat to the hotter environment outside the outer canister.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.