How Do Electrostatic Filters Work?

Electrostatic filters represent a highly effective method for the filtration of fine particles in air streams. Electrostatic Precipitators (ESP) are particularly advantageous due to their ability to process large air volumes with minimal pressure drop, enabling efficient airflow without compromising filtration performance.

Addressing the Complexity of Kitchen Exhaust Air

In commercial kitchens, exhaust air contains a complex mixture of oil, smoke, water vapor, and heat, presenting significant challenges in air purification. Feka’s electrostatic filters are specifically engineered for such demanding environments and are protected under international patents. The use of ESP technology in these settings is essential for maintaining clean and safe air quality.

Electrostatic Precipitation Process

As oil and smoke particles pass through the ionizing section, they become electrically charged. These ionized particles—both positively and negatively charged—are then attracted to and captured by collector plates arranged in parallel. This dual-polarity ionization significantly enhances particle removal efficiency.

Captured particles accumulate within the collector cells and are removed periodically during scheduled maintenance operations.

The Importance of High Voltage Operation

To achieve maximum filtration efficiency, both the ionizer and collector cells must operate at high voltage levels. Feka collaborates with globally recognized high-voltage engineering firms to ensure the superior performance and reliability of its systems.

Post-Filtration and Maintenance

Once oil and smoke particles are extracted from the air, the remaining clean air is discharged into the environment. The captured particles are retained in the collector modules, which require regular cleaning to maintain optimal performance and hygiene standards.

Uniform Air Distribution and Pre-Filtration

Feka electrostatic filters are equipped with internal air distributor plates to ensure even airflow across the entire filtration surface. Integrated pre-filters are used to capture larger grease particles prior to the ionization stage. This configuration, included as standard in all units, enhances overall system efficiency and extends service intervals.

Application Areas of Electrostatic Filters

Electrostatic filters are suitable for use in a wide range of applications, including but not limited to:

• Commercial kitchens and restaurants

• Shopping malls

• Industrial facilities involving:

  • Heat treatment processes

  • Cold drawing operations

  • Gear cutting

  • Oil-based grinding and machining

  • Forging and cold pressing

  • Other metalworking and thermal processing applications

Electrostatic Precipitator (ESP) Technology

Feka’s ESP units are designed to effectively eliminate oil, smoke, and odors from contaminated air streams. Utilizing both positive and negative ionization, the system ensures maximum capture efficiency. The ionizer operates at 14 kV and the collector cell at 7 kV, supporting stable, high-performance filtration.

Ducted Exhaust Applications

ESP systems are ideally suited for integration into ducted kitchen exhaust systems, where grease, smoke, and odors must be efficiently removed. Feka’s innovative approach to electrostatic filtration enables the reliable elimination of airborne contaminants in even the most demanding environments.

High-Efficiency Filtration at High Airflow Rates

Feka electrostatic filters deliver filtration efficiencies of up to 99%. Unlike conventional systems that are optimized for low airflow volumes, our ESP units maintain high capture performance even at elevated flow rates. Units are custom-configured for commercial kitchens and food production facilities and are available in single- or double-pass setups depending on the required efficiency level.

Key Benefits of Electrostatic Filtration

• Up to 99% removal efficiency for oil, smoke, and odor

• Modular and customizable system configurations

• Low operational and maintenance costs

• Significantly reduced fire hazards

• Environmentally friendly, chemical-free operation

• High performance even at elevated airflows

• Low pressure drop and reduced energy consumption

• Extended cleaning intervals for ductwork

• Constructed from long-lasting, industrial-grade components

Environmentally Responsible Design

• No disposable or bulky filter media

• Minimal water and power required for cleaning collector plates

• Recyclable materials used in construction (steel bodies, aluminum collectors)

• No chemical consumables or hazardous waste generation

Operating Principle

Contaminated air first passes through a diffuser and pre-filter, followed by ionization. The charged particles are then trapped on collector plates, resulting in up to 99% air purification efficiency.

Installation Flexibility

Feka electrostatic filters can be installed in various configurations: as standalone units, wall-mounted systems, or integrated into air handling systems and ecological air purification devices. Duct connections are made using appropriate transition components, ensuring compatibility with a wide range of mechanical systems.

Compact Solutions for Small-Scale Kitchens

The need for cost-effective odor and grease control solutions is growing, particularly in small commercial kitchens with space and noise limitations. To address these challenges, Feka offers compact systems incorporating plasma purification technology, providing a simple yet efficient solution for small-scale applications.

Tailored Solutions for Commercial Kitchens and Food Processing Facilities

Feka’s approach to kitchen exhaust treatment involves the integration of ESP-based ecological air cleaning units into centralized or decentralized ventilation systems. These solutions are customized according to the specific equipment and layout of each kitchen.

Comprehensive Emission Control Strategies

We offer end-to-end design and consultancy services for environmental health and compliance. Our team develops customized strategies for effective control of airborne grease, smoke, and odors in new or existing kitchen facilities.

Simplified Installation and System Integration

All Feka filtration systems are engineered for straightforward installation and integration. We work in collaboration with your mechanical and electrical engineering teams to ensure each system is designed and implemented in accordance with project requirements and technical specifications.