User Manual

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AUTOMATIC CONTROL
3 COOLING CONTROL BT Reason for energy savings
3.9 Control of Thermal Energy Storage (TES) charging
The TES is part of the cooling/chilled water
system.
0
Continuous storage operation This is mainly to ensure supply in case of a
chiller failure. By continuously storing chilled
water there is also a continuous loss (by
absorbing heat from the surroundings) at the
storage tank.
1
Time-scheduled storage operation
The two storage sensors provide an indication
about the charging of the storage tank. With this
information switching chiller can be operated
with fewer switching cycles and due to that will
run more efficiently. The thermal storage losses
will be reduced.
2
Load prediction based storage operation
Based on consumer demand predictions there
will only be as much charging of the storage as
needed. This allows for optimal operation of the
chiller(s) and reduces the thermal storage losses
maximally.