Paper Technology International 2020 - Journal - Page 27

PAPERTECHNOLOGYINTERNATIONAL
This is the only way to elegantly clean the heat exchanger
coils using the counterflow method. The heat exchangers and the
manifolds on the dry coolers are specially coated to protect against
aggressive gases.
A retention system was installed under each dry cooler,
which catches the leakage of water-glycol mixture in the event of
a leak in a dry cooler and reports this to the MSR control cabinet.
These messages are then automatically reported to the PM control
system. The output of the dry cooler is designed for an outside
temperature of 38°C (according to DIN 35°C would be sufficient).
This ensures smooth summer operations. The dry coolers take on
the condensing for the compressors during machine operation and
free cooling at low outside temperatures.
The operating status of the system is passed on to the PM
control system.
The overall concept is so flexible that some other customers
use well water instead of river water. In most cases, machine
refrigeration can often be dispensed with entirely, because the well
water mostly provides a temperature of =

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