Basic System OperationThe following is only one possible
arrangement of system components to illustrate basic concepts. These
diagrams include single atmospheric storage tanks. As shown in project
photos, nearly any tank arrangement is possible. |
Cryogel Ice Balls
Cryogel Ice Balls are 4 inch (103mm) diameter spheres constructed of high
performance
polyethylene and filled with water to form ice for cool energy storage.
Ice Balls are placed in storage tanks and are charged (frozen) and
discharged (melted) by means of circulating a glycol based heat transfer
fluid around the balls. |
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Ice Ball
Dimples Allow for Expansion As water inside the Ice Ball freezes to
form ice, the dimples flex out to allow for expansion. Without the
dimples, the life of the balls would be diminished due to stretching and
stressing of the plastic walls. Patents in the U.S. and other countries
protect Cryogel technology. |
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Charge - Ice Building
During the charge mode (usually during off-peak hours
at night), glycol is circulated around the Ice Balls in a storage tank
and then out to a chiller where it is cooled to temperatures low enough to
make ice. |
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Discharge -
Ice Melting During the discharge mode, the same glycol solution is
circulated around the Ice Balls in the storage tank. Ice Balls cool the
glycol solution that is then pumped to the load to provide air
conditioning or process cooling. |
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Standby
During the standby Mode, the chillers may be used to cool the building
directly without using ice. During this time, ice storage may be
conserved for later periods of high demand or periods of high electrical
rates. |