VONE^NBC Pressure Drop and Filtration Efficiency

The filter's resistance to the airstream passing through the device, is called Pressure Drop. It is measured as the difference between the entering and exiting Static Pressures of air before and after the filter.

Pressure drop should be kept reasonably low due to the larger fan horsepower and energy required to maintain design airflows. A doubling of pressure drop (PD) will double the required fan horsepower (BHP) (i.e. BHP = K x CFM x PD). Also, increased pressure drop tends to increase pressure differential between airstreams in a ventilation system, which can be undesirable.

The pressure drop caused by the VONE^NBC particle filter bag is extremely low. This has been shown clearly in all laboratory and field tests made. Here is an example of 

FILTER LOADING TESTS WITH DIESEL EXHAUST FUMES: PRESSURE DROP

Comparison VONE-NBC - HEPA - Electret

Measurements by VTT - Technical Research Centre of Finland  

From the figure above we can conclude that if the fan horsepower required by the VONE^NBC filter at 10 grams dust fed is 1, the fan horsepower required by the HEPA filter would be 4 HP, and further:

FILTER LOADING TESTS WITH DIESEL EXHAUST FUMES: EFFICIENCY

 Measurements by VTT - Technical Research Centre of Finland

Advantages of the VONE^NBC  Low Pressure Drop

Integrating an ultra fine particle charger with the VONE^NBC  Filter Media Structure, we reach a HEPA 10 level Filtration Efficiency with an EU7 (F7) grade pressure drop.

This fact means, that we can offer HEPA 10 level particle filtration efficiency to completely new environments. These environments include, among others, a vast majority of property and buildings with central Air Conditioning as well as various sorts of public transportation, vehicles and security equipment.

Further, this increased security can be deployed with a radically smaller increment in Ventilation Energy Consumption compared with competing technologies.

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