Method and system of high-temperature calcium looping thermochemical energy storage
US11047601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2017 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Oct 18, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E70/30
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method and a system of a high-temperature calcium looping thermochemical energy storage are provided. A thermochemical energy storage system is based on CaCO3/CaO, and an energy storage is performed by a mutual transformation between a thermal energy and a chemical energy. When solar irradiation is sufficient, CaCO3 solid particulates are indirectly heated by hot air generated from solar energy to perform an endothermic decomposition reaction, and received heat is stored in decomposition products of CaO and CO2 in a form of the chemical energy. When heat is required, a reversible thermochemical reaction occurs between the CaO and CO2 under an atmospheric pressure, and the chemical energy stored in the CaO and CO2 is transformed into the heat for release.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.