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Thermal Energy Storage

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Presentation on theme: "Thermal Energy Storage"— Presentation transcript:

1 Thermal Energy Storage

2 Thermal energy storage
Thermal energy storage (TES) is achieved with greatly differing technologies that collectively accommodate a wide range of needs

3 Thermal energy storage - Solar energy storage
Most practical active solar heating systems provide storage for from a few hours to a day's worth of energy collected. There are a growing number of facilities that use seasonal thermal energy storage (STES), enabling solar energy to be stored in summer (primarily) for space heating use during winter. The Drake Landing Solar Community in Alberta, Canada has now achieved a year-round 97% solar heating fraction, a World Record and possible only by incorporating STES.

4 Thermal energy storage - Ice-based technology
Thermal energy storage using ice makes use of the large heat of fusion of water

5 Thermal energy storage - Molten salt technology
Molten salt can be employed as a thermal energy storage method to retain thermal energy collected by a solar tower or solar trough so that it can be used to generate electricity in bad weather or at night

6 Thermal energy storage - Molten salt technology
Several parabolic trough power plants in Spain and solar power tower developer SolarReserve use this thermal energy storage concept. The Solana Generating Station in the U.S. has 6 hours of storage by molten salt.

7 Seasonal thermal energy storage
[ Recent Inter-seasonal Underground Thermal Energy Storage Applications in Canada]

8 Seasonal thermal energy storage - STES technologies
* 'UTES' (underground thermal energy storage), in which the storage medium may be geological strata ranging from earth or sand to solid bedrock, or aquifers. UTES technologies include:

9 Seasonal thermal energy storage - STES technologies
** 'ATES' (aquifer thermal energy storage)

10 Seasonal thermal energy storage - STES technologies
** 'BTES' (borehole thermal energy storage)

11 Seasonal thermal energy storage - STES technologies
** 'CTES' (cavern or mine thermal energy storage). STES stores are possible in flooded mines, purpose-built chambers, or abandoned underground oil stores (e.g. those mined into crystalline hardrock in Norway), if they are close enough to a heat (or cold) source and market.

12 Seasonal thermal energy storage - Conferences and organizations
Most recent was Innostock 2012 (the 12th International Conference on Thermal Energy Storage) in Lleida, Spain.

13 Seasonal thermal energy storage - Conferences and organizations
The IEA-ECES programme continues the work of the earlier International Council for Thermal Energy Storage which from 1978 to 1990 had a quarterly newsletter and was initially sponsored by the U.S. Department of Energy. The newsletter was initially called ATES Newsletter, and after BTES became a feasible technology it was changed to STES Newsletter.

14 Seasonal thermal energy storage - Use of STES in Greenhouses
[ Aquifer thermal energy storage application in greenhouse climatization]

15 Pumpable ice technology - Thermal energy storage systems
A pumpable-ice-based Thermal Energy Storage System (TESS) can be used in centralized water-cooled air-conditioning systems in order to eliminate peak demand loads at critical times

16 For More Information, Visit:
The Art of Service


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