Thermal storage tank and associated top structure
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United States of America Patent
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Apr 13, 1993
Issued Date -
N/A
app pub date -
Feb 21, 1991
filing date -
Jun 25, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is a thermal storage tank for the long term storage of a thermal storage medium whose energy is available on demand for satisfying cooling or heating loads. The tank may be earth excavated and include side walls of a lightweight, high strength concrete that retains its thermal insulating characteristics even when exposed to groundwater. A unique inverted frustrum shape for the tank offers numerous advantages. In association with a cold storage tank, a novel submerged, single point ice introduction system provides a much improved formation of the ice mass in the tank. Also provided for the cold storage tank is a novel floating top that provides a ballast effect to keep the ice mass submerged.
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