610x610x150 HEPA FILTER
High-efficiency particulate air (HEPA), which is also referred to as high-efficiency particulate absorbing and high-efficiency particulate arrestance, represents an efficiency standard for air filters. These HEPA filters boast an impressive filtration efficiency of up to 99.995% when it comes to capturing particles larger than 0.3μm.
Features
High Filtration Efficiency: HEPA filters are capable of achieving a filtration efficiency of over 99.995% for particles with a diameter of 0.3 microns or larger. They can effectively intercept tiny particles such as dust, pollen, bacteria and viruses, ensuring high air purity.
Low Resistance: Despite their high filtration efficiency, HEPA filters maintain a relatively low air flow resistance. This allows air to pass through the filter smoothly, reducing energy consumption and the operating costs of ventilation systems.
Strong Stability: HEPA filters possess good physical and chemical stability. They can maintain their filtration performance and structural integrity under different environmental conditions, such as temperature and humidity changes, resulting in a relatively long service life.
No Secondary Pollution: The filter materials and structural design of HEPA filters ensure that no harmful substances are generated during the filtration process, preventing secondary pollution of the filtered air and guaranteeing good air quality.
Working Principles
Interception: When particles in the air pass through the HEPA filter with the airflow, larger particles will directly collide with the filter fibers and be intercepted by the fibers, similar to how large objects are blocked when they hit obstacles.
Inertial Impaction: For some medium-sized particles with a certain mass and velocity, when the airflow passes through the filter, due to sudden changes in the airflow direction or obstruction by the filter fibers, the particles will continue to move in their original direction due to inertia and thus be captured by colliding with the filter fibers.
Diffusion: For very small particles, they will perform random Brownian motion in the air. During this motion, these small particles will collide with the filter fibers and be adsorbed, just like in a space full of obstacles, small particles are likely to encounter obstacles and be retained during their random motion.
Application Scenarios
Medical Fields: They are used in operating rooms, isolation wards and laboratories to maintain a sterile and clean air environment, preventing the spread of bacteria and viruses and protecting the health of patients and medical staff.
Semiconductor Manufacturing: In semiconductor production workshops, HEPA filters are crucial for creating a dust-free environment. They can remove tiny particles that may contaminate semiconductor wafers, ensuring the quality and yield of semiconductor products.
Aerospace: In aircraft cabins and spacecraft, HEPA filters are used to purify the air, providing a clean and healthy breathing environment for passengers and astronauts.
HVAC Systems: In heating, ventilation and air conditioning systems of buildings, HEPA filters can improve indoor air quality by removing dust, pollen and other pollutants, enhancing people's comfort and health.
Clean Rooms: In industries such as electronics, pharmaceuticals and food processing that require high levels of cleanliness, clean rooms equipped with HEPA filters can effectively control the particulate matter content in the air and ensure product quality and production safety.
