Electric heat storage apparatus
US4246466A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1979 |
| Grant date | Jan 20, 1981 |
| Priority date | — |
| Expiry date | Aug 20, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/14
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An apparatus for storing electrically generated heat includes a sealed container holding a bed of fusible heat storage medium, such as an alkali metal hydroxide composition, and having an expansion space above the bed of material to accommodate the medium in its liquid phase. A generally horizontal main electric heating unit is located in the bottom portion of the container for heating the fusible medium above its melting point. A first vertical electric heater is provided in the bed of material in thermal contact with the main heating unit and has its active heating portion extends upwardly from the main heating unit only to the height of the heat storage medium in solid phase. A second vertical electric heater is located in the container in thermal contact with the first vertical heater with the active heating portion of the second heater extending only from the height of the fusible medium in solid phase to the height of the medium in the expanded liquid phase. The main heating unit and first vertical heater are controlled by a control means responsive to the temperature in the vicinity of the main heating unit. The second vertical heater is independently controlled by a control…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.