HEPA H11 smogo filtras

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Prekė: HEPA H11 smogo filtras. Kategorija: Dalys.

• Gamintojas: no brand
• Modelis: FILTRH11

• Price applies to 1m current with dimensions of 1m x 0,5m
• Paper sent in one piece with a length equal to the number of ordered items.

HEPA filter paper is used in filters and all kinds of places where there is air flow, such as:

• air supply,
• ventilation grilles,
• air intakes,
• air conditioners,
• recuperators, etc.

It is also suitable for the production of protective masks (does not contain glass fibers).

Class H (H - High efficiency) filters are designed to capture particles with a diameter of 1 micrometer.

The health-threatening particles found in smog 2.5PM and 10PM have diameters from 2.5 to 10 times larger, respectively, so using the HEPA H11 filter we filter them out almost 100%.

The paper consists of polypropylene (filtering layer) on a polyethylene terephthalate backing.

The filter element is the HEPA H11 filter.

HEPA filters (English) high efficiency particulate air filter) are high-efficiency air filters used to purify air from dust.

Not every HEPA filter has the same properties. HEPA filters are divided into several categories:

• G (from G1 to G4) - filters for filtering coarse dust (pollen with a diameter of more than 10 micrometers)
• F (from F5 to F9) - filters used to filter fine dust (pollen with a diameter of about 10 micrometers)
• H (from H10 to H14) - filters used to filter micropollen (pollen with a diameter of about 1 micrometer)

To effectively filter the air from micropollen, we need a filter class H. Weaker filters do not guarantee air purification from the most harmful micropollen such as 2.5PM

The paper is characterized by high filtering efficiency and low air resistance (pressure drop < 10 Pa), therefore it is also suitable for installations that do not require forced air flow (fan).

Pictured below is a contaminated filter after 2 weeks of operation. The filter was placed at the air inlet to the apartment.

Using filr paper, you can turn your air conditioning into an air purifier at a low cost, as in the photo below

The offered HEPA filter consists of tightly arranged polypropylene fibers with a very small diameter (about 0.5μm to 2μm). Unlike membrane filters, the filter does not act as a sieve that filters particles larger than the pore diameter of the membrane, but its action consists in entrapment of particles by filter fibers (particles adhere to fibers).

The filtering process consists of several different mechanisms:

Interception

The particles in the air stream penetrating the filter are greater than the distances between the filter fibers or greater than the pores in the filter membrane. The filter in this case acts as a sieve, trapping sufficiently large particles. The capture efficiency is the higher the larger the captured molecule. Capture efficiency decreases significantly for molecules smaller than 0.3μm.

Clash

Particles in the air stream penetrating through the filter interfere with densely arranged filter fibers or filter membrane and settle in the filter. This mechanism is effective for large and medium molecules, filtration efficiency decreases for smaller molecules nothing 0.3μm.

Diffusion

The smallest particles are inhibited by collision and are stopped by collision or interception. This process is effective at low airflows, and is typically effective for molecules less than 0.1 μm

Electrostatic attraction

The particles penetrating the filter are attracted to the electrostatic charged filaments of the filter. This phenomenon is effective for small molecules. Filtration efficiency decreases for particles larger than 0.3μm.

Particles above 0.3μm are mainly filtered by the capture and diffusion mechanism. Particles below 0.3μm are mainly filtered by electrostatic attraction.

The most difficult to stop are particles with a diameter of about 0.3μm, which is why particles of this size are used in determining the effectiveness of HEPA filters.

The auction concerns 1 meter of running filter paper (width 0.45m).

Technical specification.

• 1 µm pollen filtering efficiency: about 90%
• 2.5 µm pollen filtering efficiency: over 97%
• Pump filtering efficiency with a diameter of 10 µm: almost 100%
• Weight: about 75 g/m2
• Material: Compound paper

Specifications