Compressed Air Systems should
be designed for just the right quality of air at the most economical
costs. Delair has a wide range of dryers for all your needs. For
general plant and instrumentation air where requirement is between
2°C PDP to 10°C
PDP, Delair Refrigeration Dryers - DI series, does the job. If the
application requires extra dry air and PDP below 2°C,
then Delair has a large range of adsorption dryers for the job -
heatless regenerated and energyless.
REFRIGERATION TYPE COMPRESSED AIR DRYERS
- FDI SERIES
Where and why do we use
Refrigeration Air Dryers?
Most compressed air applications fall into 2 categories:
general plant air
for instrumentation, tools
etc.
For general plant air,
dew points of 2°C to
4°C are considered
adequate, well within the range of refrigeration dryers.
Refrigeration type dryers use less energy and hence
are lower in first and operating costs.
Desiccant dryers, heatless type, use 10 to 15% purge
air for regeneration of desiccant i.e. 10 to 15% of
compressor power (HP) is being used as energy operating
costs for drying thereby increasing the capital costs
in installing extra capacity of compressor.
The refrigeration type air dryer is a packaged self
contained unit, fully automatic and produces a steady
level of dewpoint. There is no regeneration cycle with
complex valving, no periodic recharging of chemicals,
oil in the air stream does not affect performance.
However, if applications requiring extra dryness of air and pressure dew point
below 2°C are required
only an adsorption dryer will do. Generally for instrumentation
air or in outdoor applications an adsorption dryer is
called for.
