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2.3.1. Principle function methods
1
2
3
4
5
6
7
DRYPOINT
M eco control
®
9
10
8
11
12
Damp compressed air (2) enters the unit through the housing
head (1) and flows downwards through the core pipe of the
membrane element (5). A nanofilter (6) is fitted in the core
pipe outlet
which then frees the compressed air of residual aerosols and
particles. Separated condensate flows out of the base and
is routed through the float drain-off conduit (7). The flow
direction is reversed in the nanofilter element area and the
damp compressed air flows through the membranes of the
internal membrane element.
A part of the compressed air flow
(9) is diverted downstream of the membrane element and
passed by the sensor continuously in the purge air control.
The sensor measuring results will be evaluated in the purge
air control and the purge air feed to the membrane dryer will
be opened as required. As a result, the purge air decreases to
atmospheric pressure and is considerably dryer as the damp
contained in the compressed air is distributed to a multiple of
the original volume.
The very dry purge air (10) will be routed via the purge air jets
(3)
to the external side of the membranes (11) and then evenly
distributed via the arranged position of the membranes.
This means that two air flows move through the membrane
element in an opposite direction with differential damp
content(5):
Damp compressed air on the inside and dry purge air on the
outside.
Due to the damp difference, water diffuses from the
compressed air into the purge air. The damp purge air (12) is
then released to the ambient air. The compressed air (8) exits
as dry from the membrane dryer.
Installation and operating manual
11
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