saturated air leaving conventional wet cooling
towers is visible at certain climatic conditions.
Depending on site conditions, this visible cooling
tower plume has to be avoided.
In recent years, hybrid-cooling
towers or plume abatement systems have been employed
basically to avoid formation of visible plumes.
The plume abatement cooling
system features a wet cooling tower which provides
most of the cooling capacity and a dry system which
is designed to produce dry hot air.
The low humidity hot air stream
from the dry system is mixed with the moist warm air
leaving the tower must be sufficiently low to
prevent the formation of visible plumes. The hot
water from the power station surface condenser is
cooled to the design discharge temperature as it
passes in series first through the dry section and
then through the wet section of the tower.
GEA has been active in the design and engineering of
hybrid cooling towers for over two decades.