dryers offer a point of use control of water vapor. membrane dryers
utilize the principles at work in molecular sieves.
not absorption, as used in desiccant dryers, is the process involved.
deltech membrane dryers contain bundles of fiber. these bundles are
porous. but the pores only allow water vapor to pass through the porous
wall. the water vapor is then trapped within membrane dryer to be
periodically vented to atmosphere. the porous membrane bundle is
designed to maximize surface area and have a consistent cross sectional
density thereby improving efficiency. the membrane does not remove
particles such as oxygen which makes membrane dryers particularly suited
or medical use.
spx deltech membrane dryers can cope with a
flow of up to 141cfm but it should be borne in mind that this is flow at
point of use and not at compressor outlet. they can be installed with
deltech filters to remove particles other than water vapor. they are
unobtrusive, vertically designed to use as little space as possible and
are an extremely economical solution to the problem of compressed air
water vapor. there are two membrane dryers available from spx deltech.
membrane dryers use a stream of compressed air to
purge/vent trapped water vapor within the dryer.