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Teil 3 Seite 4-14
Additional heat exchanger between refrigerant and refrigeration medium. This results in
an additional "temperature level" (does not apply to vacuum ice)
Additional binary ice pump(s) required (unloading and/or loading pump)
Additional (buffer) reservoir, if necessary with stirring device recommended
Disadvantages in comparison to brine systems:
In some instances, additional investment costs are required for the reservoir, the loading
pump and the reservoir stirring device.
Additional energy consumption for the loading pump and stirring device.
Example plants
Reference literature
Lehrbuch der Kältetechnik, C.F. Müller Hüthing, Heidelberg, ISBN 3-7880-7509-0
4.1.11.2 Shock tunnel cooling
Description of the technique
The temperatures in the shock cooling tunnel lie between -15°C and - 20°C. the contact
time in the shock cooling tunnel is approx. 90 minutes. After leaving the shock cooling
tunnel, the carcasses are subjected to secondary cooling in the equalisation cooling room
until they have a core temperature of +7°C. Figure 4-2 shows the cooling curve with the
temperature development in the shock cooling tunnel and in the equalisation cooling
room.
Figure 4-3: Cooling curve in the shock cooling tunnel and in the equalisation cooling
rooms