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Micro-Nano Combo Filter - For Long Term Use

Distinguished Project_Nanofibre Technologies

Reduce formation of a dense deposit layer at upstream end of filter resulting

Reduce formation of a dense deposit layer at upstream end of filter resulting in high pressure drop across filter

Micro-Nano Combo Filter - For Long Term Use

Nanofiber filter under long-term use can be quickly packed with filtered solids forming a dense skin layer at the upstream end of filter, which incurs a high pressure drop across the filter. By replacing nanofiber filter with “combo filter” having a microfiber filter upstream of nanofiber filter, the formation of the dense deposit layer can be reduced.

Nanofiber filter vs. micro-nano combo filter

Nanofibre Filter can be used for cabins, indoor spaces, and many other application areas

Nanofibre filter effectively trapping diesel dust

Microfibre filter poorly trapping diesel dust

Special Features and Advantages

Low pressure drop, high efficiency for long-term use

Microfiber filter upstream can:

- reduce formation of the dense particle layer which blocks the flow

- remove larger particles leaving finer uncaptured particles for downstream nanofiber filter

- promote cake filtration that can be removed by backpulsing

Applications

Cabin filters for airplanes, vehicles, trains, and ships

Filters for public facilities (theatres, auditoriums, clean rooms, etc.)

Patent

Patent No:

US Patent 8,303,693

Principal Investigator

Prof. Wallace LEUNG

Department of Mechanical Engineering

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