What Is The Working Principle of EFU (Equipment Fan Filter Unit)?

What Is The Working Principle of EFU (Equipment Fan Filter Unit)?

The working principle of the EFU (Equipment Fan Filter Unit) involves the following steps:

1. Air intake: The EFU is designed to draw in ambient air from the surrounding environment. It may have an intake grille or ducts for air intake.

2. Fan operation: The EFU is equipped with a fan that helps create airflow. The fan generates suction or positive pressure, depending on the specific application, to draw or push air through the unit.

3. Air filtration: The incoming air passes through the filter section of the EFU. This section usually contains high-efficiency filters like HEPA (High-Efficiency Particulate Air) or ULPA (Ultra-Low Penetration Air) filters. These filters are designed to capture very small particles, typically 0.3 micrometers in size or smaller, with high efficiency.

4. Particle removal: As the air flows through the filter section, the filters trap and remove particles, pollutants, and contaminants present in the air. These may include dust, bacteria, viruses, pollen, and other airborne particles.

5. Clean air delivery: The cleaned and filtered air is then delivered to the equipment being served. The EFU ensures that only clean, particle-free air reaches the equipment, helping maintain a controlled and clean environment around the equipment.

6. Variable airflow control: EFUs often come equipped with control systems that allow for variable airflow and fan speed adjustments. This enables precise control of air quality and flow rates to meet the specific requirements of the equipment being served.

The working principle of the EFU revolves around drawing in ambient air, filtering it through high-efficiency filters, and delivering clean air to the equipment in order to maintain a clean and controlled environment for sensitive equipment applications.