Introduction To The Application
Of Nano Technology
In Gas Turbine Air Filtration.
Papers covered with nano
One of the
latest advancements in Filtration is the use of Nano
Technology. With this technique surface large cellulose and synthetic
fibers (usually with diameter of 10 to 50 Ķm) covered with very fine nano fibers(usually with
diameter of 50 to 400 Nm).
The main usage of this
technology is in air filtration of gas turbines with reverse pulse cleaning
Two main Benefits of this
Filtration efficiency improvement, by decreasing of pore sizes.
Increasing of filter's lifetime, due to surface filtration.
Covering Filter Paper with Nano Fibers
electric field, the filter paper is laid down by a polymeric layer of nano fibers, before of pleating.
A very high voltage
forms the polymer as fibers with nanometric
of Filter Paper and Particle Separation Methods
is two different ways:
Depth filtration: Particles are separated in different layers of depth of
filter paper, in terms of their sizes.
Surface filtration: All of particles are separated in the surface of filter
paper, due to use of nano fibers.
of Nano Technology in Filtration
in Protection of Turbine
formed by intersections of nano fibers are very
smaller than the pores of usual filter paper. This case causes an extend in efficiency of separation and protection of turbines.
(behind nano filter)
a layer of nano fibers on the inlet of filter
paper (dirty air side), we achieve to the surface filtration. So, all of
the separated particles remain in the outside of filter paper and filter
revives truly at the pulse time.
Common Filter : 150 mmWG
Filter with Nano Fibers
: 60 mmWG
Power Gain(150-60)=90mmWG equals
1.4% more power output
Effect of Nano Fibers
on the Efficiency of Filters:
(Tested on Behran Filterís Filter Papers)
Efficiency test according to ASHRAE 52.2 Standard
Efficiency test according to EN779:2002 Standard