TSU Range
27 models from 300 to 5000 kWh
Principle
of operation
During periods of reduced cooling load or when there is no
cooling load ice is built and stored within the ice thermal storage
unit.
For "external
melt" ice thermal storage units, there is direct contact between the
ice and the water that circulates to the cooling load. The ice coils
are immersed in a tank filled with water and, by feeding refrigerant
or cold glycol to the coils, cylinders of ice are formed around the
tubes. An ice thickness control will signal when the ice thermal storage
unit is fully charged according to the desired set point, at which time
the refrigeration plant is stopped. During melt-out warm return water
from the cooling load is pumped through the ice tank thus melting the
ice and cooling the water. The direct contact between the water and
the ice assures a constant low water temperature during the entire melt
cycle.
