Gas Turbine Filtration


Filtration method: Diffusion (Brownian motion)

Small contaminant particles can react dramatically through interaction with gas molecules in the air stream. Although the gaseous elements of the air stream are very small and light, (for example a hydrogen atom is estimated at around 0.1 nm), the massive number of atoms the air stream (>1 yotta or 1024 per cubic metre of air) is able to transfer is enough energy to influence objects with a 100 nm diameter into Brownian motion.

The result of Brownian motion is a particle path which is considered random, also its vector path length is in proportion to particle size. As contaminant particle size reduces  the probability of a particle hitting a fibre significantly increases.

Distance travelled by a particle decreases proportionally with particle size; the smaller the particle the further it will travel, increasing the chance it will be inertially separated, therefore particle removal efficiency is expected to increase for smaller particles less than MPPS.

Air Filtration Description

Air Filtration - Diffusion


Filtration Methods