Aquifer thermal energy storage
Conference
·
OSTI ID:6608661
The concept of thermal energy storage in aquifers was suggested a few years ago. The idea is to store in aquifers large quantities of hot water produced (1) as a by-product of power plants, or (2) from solar energy collectors, and to retrieve the hot water for use when needed. Hence this method will, on the one hand, recover waste heat from power plants that is normally wasted, thus making possible the implementation of large-scale total energy systems. On the other hand, when used in conjunction with solar energy systems, aquifer energy storage provides a buffer between time-varying solar energy inputs and thermal or power demands. It is only recently that sophisticated computer models have been developed to study this storage system using the proper physical conditions and parameters, and to make realistic predictions of the energy storage and retrieval efficiencies. Furthermore, field experiments are currently underway to test this concept. Analytical and numerical studies at the Lawrence Berkeley Laboratory are described. The hydrodynamic and thermal behaviors of the storage system are analyzed and illustrated. The ratio of energy retrieval over energy stored is predicted to be as high as 80%.
- Research Organization:
- California Univ., Berkeley (USA). Lawrence Berkeley Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6608661
- Report Number(s):
- LBL-7070; CONF-780714-2
- Country of Publication:
- United States
- Language:
- English
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