Method for recovering energy from dry ice at infra-atmospheric pressure
US11028968B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2016 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Feb 10, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of recovering energy produced by the change of phase of dry ice using a device having an enclosure (2) containing dry ice at an infra-atmospheric pressure and at a solidification temperature corresponding to the infra-atmospheric pressure; and a primary energy recovery circuit (3), in which a heat transfer fluid circulates, passing through the enclosure. The method involves passage of the heat transfer fluid into the primary circuit (3), this step causing the heating of the dry ice and its change of phase into CO2 and the cooling of the heat transfer fluid; extraction of the CO2 contained in the enclosure (2); and substantially continuous lowering of the pressure of the enclosure (2) to an infra-atmospheric pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.