Cooling system for cold climate areas
gwk
cooling water temperature is at least 5K
above air temperature. The function of the
system hermeticool is to transport heated
water to the external free cooler where the
heat is transferred to the ambient air by
means of direct heat exchange.
Common free coolers must be filled and operated
with a water-glycol mixture in order
to prevent freezing in case of a plant standstill
in winter. In order to not contaminate
the consumers with glycol and thus limiting
heat transfer, a heat exchanger must be installed
to separate the circuits. This is not
necessary when using gwk hermeticool
units, which are operated all year without
glycol. Constructive details and an integrated
safety system prevent freezing even without
additional heating. Compared to glycol
operated free coolers this system achieves
considerable savings in operating costs.
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