2. Ultra compact heat exchanger
The main part of the refrigeration air dryers is the heat exchan-ger.This compact aluminium unit contains various stages ofthe treatment of compressed air.
Air/air exchanger. Where the first phase is carried out.
In this section the inlet air is pre-cooled and the outlet air is
post- heated.This allows the reduction of energy consumption
of the chiller circuit and reduces the possibility of condensate
forming on the outer surface of the outlet pipe.
Flow mixing chamber. Unlike other exchangers on the
market, the unit designed has a low mixing chamber at
the air/air exchanger outlet.This passage is very important
because the air temperatures at the exit of the air/air exchan-
ger channels are not uniform.The mixing chamber enables the
air low to enter the evaporator channels at a uniform tempe-
rature, allowing an optimum exchange.
Evaporator. The pre-cooled air in the air/air heat exchanger
is mixed in the inlet mixing chamber of the evaporator and
cools to the dewpoint. The heat is transferred to the gas
refrigerant that evaporates.
Demister. The air cooled in the evaporator passes through a
demister separator which allows the condensate to drain into
a large collecting chamber.The geometry of both the module
and demister allows pressure drop values to be kept low.
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