In industrial ventilation and air handling systems, cleaning and maintaining filters is essential to ensure the energy efficiency of the system. A clean filter provides low pressure drop, stable airflow, and reduced electrical consumption, helping to keep the system consistently efficient and reliable.
Why a clogged filter consumes more
During operation, dust particles accumulate in the filter media, increasing airflow resistance. When the pressure drop (Δp) exceeds the design values, the fan must generate higher pressure to maintain the same airflow, resulting in increased energy consumption.
A clogged filter can therefore significantly increase fan energy usage and impact the operating costs of the system, as well as reduce the equipment’s lifespan if the overload persists over time.
When to replace filters
Replacing filters too early leads to material waste, while replacing them too late increases energy consumption and reduces overall efficiency. The optimal solution is to monitor the pressure drop and schedule replacement based on Δp values predefined by the manufacturer.
The ideal time for replacement is when the filter’s Δp reaches the recommended threshold, before the fan operates under overload conditions.
Choosing the right filter
Rigid or soft pocket filters and AEROFEEL filter cells, thanks to their high dust-holding capacity and low initial pressure drop, help maintain the energy efficiency of the system over time.
When selecting the correct filter, it is important to consider:
- The required filtration class (according to ISO 16890);
- The airflow rate and available fan pressure;
- The planned maintenance frequency.
A high-efficiency filter maintains a low pressure drop for a longer period, ensuring clean air and cost savings over time.
How to optimize maintenance
To maximize efficiency and reduce operating costs, it is recommended to:
- Regularly check the differential pressure across the filter;
- Record the initial pressure drop and compare it over time;
- Replace filters when the recommended threshold is reached;
- Check the integrity of seals and frames to prevent air bypass;
- Use filters certified according to ISO 16890.
Recording Δp over time allows you to predict replacement, optimizing management costs and ensuring system safety.
Conclusion
Regular filter maintenance is an integral part of efficiently managing an industrial ventilation system. Accurate monitoring and the use of high-capacity filters enable you to:
- Reduce energy consumption
- Improve system performance
- Maintain consistent air quality
Discover the AEROFEEL range of pocket and filter cell solutions for industrial air handling systems.