Energy storage
US10550732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2016 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Jan 24, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01K25/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cryogenic energy storage system comprising a liquefaction apparatus for liquefying a gas to form a cryogen, wherein the liquefaction apparatus is controllable to draw power from an external power source to liquefy the gas, a cryogenic storage tank in fluid communication with the liquefaction apparatus for storing cryogen produced by the liquefaction apparatus, a power recovery apparatus in fluid communication with the cryogenic storage tank for recovering power from cryogen from the cryogenic storage tank by heating the cryogen to form a gas and expanding said gas, a hot thermal store for storing hot thermal energy, wherein the hot thermal store and the power recovery apparatus are arranged so that hot thermal energy from the hot thermal store can be transferred to the gas before and/or during expansion in the power recovery apparatus, and a charging apparatus which is controllable to draw power from the external power source when the power drawn by the liquefaction apparatus is below a threshold value, and supply the cryogenic energy storage system with thermal energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.