Demand Controlled Filtration

Demand Controlled Filtration (DCF) offers energy savings of up to 30% of HVAC energy consumption. Real-world results show an effective energy reduction of 20%, while maintaining room pressure stability.

For a medium-sized installation with an average capacity between 10,000 and 50,000 m³/h, this translates to annual savings of €30,000 and a payback period of less than 5 years. This technology is ideal for meeting national and European energy reduction targets.

A practical way to implement DCF in cleanrooms is by adjusting the settings of the Air Handling Unit (AHU) based on operating hours. This allows the airflow to be modified without increasing the particle concentration in the cleanroom.

This can lead to significant energy savings without compromising air quality, as shown by research¹. In the facilities studied, DCF resulted in annual energy savings ranging from 28% to 72%.

According to research², adjusting airflow during non-operational hours in a GMP Class C cleanroom can lead to energy savings of up to 75%, without exceeding particle concentration limits. Experiments and simulations show that air quality is maintained even when the air handling system is turned off during non-operational hours.

The main reason for high energy consumption is the high air change rate (ACR; ventilation + recirculation [HEPA filtered]) required to ensure room air quality. Studies show that using DCF poses no risk of contamination. The results demonstrate that DCF maintains air quality while reducing energy consumption.

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