Method and apparatus for storing mechanical energy by quasi-isothermal expansion and compression of a gas
US9080574B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | May 6, 2010 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Jun 19, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E70/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system for energy storage, in particular for mechanical energy, including a system for quasi-isothermal compression of a gas via a hydraulic fluid. The mechanical energy stored is then released by quasi-isothermal expansion of the gas. The system is also configured to store electrical energy, in particular from intermittent sources such as photovoltaic or wind energy. The storage of excess electrical energy can also be considered for use during consumption peaks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.