Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Aquifers for energy storage

Journal Article · · Mech. Eng.; (United States)
OSTI ID:6205110
The Minnesota Geological Survey, according to its director M. Walton, is considering the Franconia/Ironton/Galesville aquifer, which lies approx. 210 m under the Minneapolis/St. Paul area, as a possible storage area for thermal energy. Such a storage system would involve two wells drilled into the aquifer. One well would be used to pump cold water out of the aquifer to a heat exchanger, which would heat the water from 12 to 150C. Heated water would be returned through the other well under pressure. The water in the aquifer would form a bubble of heated rocks and water that would hold the heat for up to six months. With such a heat storage system, low-cost coal could be used to meet high-energy demands during peak periods. The University of Minnesota is working on a proposal for such a system with the Minnesota Energy Agency, Honeywell Corp., and General Electric Co.
Research Organization:
Minnesota Geological Survey, St. Paul
OSTI ID:
6205110
Journal Information:
Mech. Eng.; (United States), Journal Name: Mech. Eng.; (United States) Vol. 102:8; ISSN MEENA
Country of Publication:
United States
Language:
English