Unit Description - Kemper KHS CoolFlow 618 01 001 Manuel D'utilisation

Unit description

In cooling mode, the unit (an
air-cooled chiller) takes heat out
of the operating medium to be
cooled, water or a mixture of
water and glycol, within a closed
medium cycle in the evaporator
(plate heat exchanger) and passes
it on to the closed cooling cycle.
As a consequence of the heat
exchange, the medium cools and
the refrigerant in the cooling cycle
vaporises under low pressure.
The gaseous refrigerant enters an
electric compressor (scroll con-
struction) which increases the pres-
sure and the temperature of the
refrigerant. The gaseous refriger-
ant is led into a finned condenser,
which, as a consequence of the
heat exchange, condenses the
refrigerant under high pressure to
a liquid. The air emerging at the
condenser heats the environment.
The liquid refrigerant is fed by
means of a variable injector valve
back to the evaporator where the
circuit begins again.
A return temperature dependent,
seamless controller, which ensures
the unit's operation and all of the
safety functions, is used to control
the cooling capacity. A potential-
free contact provides for remote
enabling.
The unit is designed for outdoor
installation. Under certain cir-
cumstances, it can also be used in
indoor areas.
The unit cooling cycle comprises
an evaporator, compressor, elec-
tronic injection valve, condenser,
condenser fan, pressure transducer,
high and low pressure switches
and a 4-way changeover valve.
The medium cycle comprises a
tube bundle heat exchanger, a cir-
culation pump and a flow switch.
Vibration dampers are available as
accessories.
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