AHG Solutions Guide_Edition 2.7

Dirt and Air Separation
Contents
Comparison of Different Deaeration Systems
In order to illustrate the effectiveness of different deaeration systems, we would like to show the physically
and technically achievable, minimum nitrogen content in the network water in dependence on the pressure
conditions at the place of installation Nitrogen serves as “measurement gas” because it is an inert gas and
is, thus, not consumed in secondary reactions. This leads to an unbiased measurement result.
bubble-free
EXPANSION &
DEAERATION
Achievable nitrogen concentration after thedeaeration in mg/l
free bubbles in the water
Pressure at the place of installation of the deaeration device in bar
EcoVent
Microbubble / Air Separators
EcoPress / EcoPress Giga
Atmospheric Deaerator
Duraflex
Vacuum Deaerator
Mechanical Air Separators
Can only work effectively if they are
installed at high points.
Atmospheric Deaerators
Can prevent the formation of free
gas bubbles in the circulation water.
They are the best solution as a central
bleeding device, but not for the
purposeful oxygen separation. Erosion
due to two-phase flow can be avoided
to the greatest possible extent.
Vacuum Deaerators
Can reduce the overall gas content
almost to zero. They combat
corrosion (reactive gases) as well as
erosion (inert gases). High degrees
of separation are achieved using
dynamic vacuum deaerators.
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