20
WVM_BASIS_EN_03—07/2016
Expansion phase
(duration: some minutes)
The pressure in the right vessel is released
through the expansion valve until the ambient
pressure is reached.
The escaping of the
compressed air is thereby audible at the silencer
as a low hum.
Expansion phase
Heating phase
(duration: several hours)
A vacuum pump sucks ambient air through the
heater* to the vessel to be regenerated. The air
is thereby heated by the heater. The warm air
subsequently flows through the humid desiccant,
removing the water contained in the agent, which
is fed out in the form of steam together with the
air through the piping.
* This can be either a steam or an electrical heater, but also a
combination of both heater types
Heating phase
Cooling phase
(duration: approx. one hour)
The hot, dried desiccant must now be cooled and
is then ready for absorption. The heater is
switched off so that the vacuum pump feeds cold
ambient air through the vessel.
If the “loop regeneration” option has been
installed, the regeneration air flows in a closed
circuit. Heat dissipation occurs via a water cooled
heat exchanger.
Advantage: No desiccant preloading with
ambient moisture.
Cooling phase
