Airtècnics logo
Air Curtains Fans Ventilation Actuators

Air Curtains Specialist - Industrial Ventilation

  • Català
  • English
  • Español

  • Dansk
  • Deutsch
  • Dutch
  • Eesti keel
  • Français
  • Italiano
  • Latvian
  • Magyar
  • Norwegian
  • Polskie
  • Português
  • Pусский
  • Slovenščina
  • Suomalainen
  • Srpskohrvatski
  • Svenska
  • Türkçe
  • čeština
  Login

Air Curtains Specialist - Industrial Ventilation

  • Products
    • Air Curtains
      Air Curtains
    • Air Purifier and Disinfection Units
      Air Purifier and Disinfection Units
    • Air Handling Units
      Air Handling Units
    • Heat Recovery Units
      Heat Recovery Units
    • Ventilation Units
      Ventilation Units
    • Axial Fans
      Axial Fans
    • Radial fans
      Radial fans
    • Centrifugal Fans
      Centrifugal Fans
    • In Line Fans
      In Line Fans
    • Exhaust Fans Units
      Exhaust Fans Units
    • Cross-Flow Fans
      Cross-Flow Fans
    • Fan Heaters
      Fan Heaters
    • Filters and Filter Units
      Filters and Filter Units
    • Dampers and Shutters
      Dampers and Shutters
    • Rotary Actuators
      Rotary Actuators
    • Regulation
      Regulation
    • Pressure Switches and Sensors
      Pressure Switches and Sensors
    • See all products
  • Technology
    • Air curtains: Foundations

      • What is an air curtain?
      • Are air curtains effective?
      • How air curtains work?
      • Air curtains: Technology
      • Advantages and benefits of air curtains
      • Air curtains: Applications
      • Installation examples
      • Selection factors of air curtains
      • Air curtains control and regulation
      • Heat pump air curtains
      • EC air curtains
    • Airtècnics Air Curtains

      • Characteristics
      • R+D+i UPC university
      • Selection chart
      • Models and applications
      • Control and regulation
      • Accessories
    • Wellisair Technology

      • Wellisair: Hydroxyl Radicals Technology
      • Wellisair application sectors
      • What is Wellisair technology for?
      • Wellisair against bacteria: Tests
      • Wellisair against viruses: Tests
      • Wellisair vs Coronavirus - COVID-19
      • Is Wellisair effective in educational centers?
      • Safety of long-term exposure to hydroxyl radicals
    • Ventilation

      • Fans: Overview
      • Heat recovery: Overview
      • Heat recovery: Types
      • EC fans: Overview
      • EC fans: Advantages
      • Rotary actuators for dampers
      • Fan speed controllers
  • Novelties
    • News

      • Decorative air curtain for design spaces
      • New industrial air curtains with heat pump
      • Salamandra hall for concerts installs air purifier K7 to ensure safe culture
      • The Spanish government updates the RITE indoor air quality regulation standard
      • Insect control air curtains for a honey producer. Case study
      • Decorative Zen air curtains for the accesses of the parking in Al Zahia City Center mall in Sharjah
      • Advantages of installing an air curtain with heat pump
      • Healthier gyms thanks to K7 air and surface purifier
    • Newsletters

      • Newsletter April 2021
      • Newsletter March 2021
      • Newsletter February 2021
      • Newsletter January 2021
      • Newsletter December 2020
      • Newsletter November 2020
      • Newsletter December 2019
      • Newsletter November 2019
    • Top Works

      • Eiffel Tower, Paris (France)
      • W hotel, Dubai (UAE)
      • Sheikh Jaber Al-Ahmad Cultural Centre, Kuwait (Kuwait)
      • Nike store, Milan (Italy)
      • Mango shop, Platja d'Aro (Spain)
      • Aldi supermarket, Madrid (Spain)
      • Vodafone store, Barcelona (Spain)
      • Stratford station, London (United Kingdom)
  • Applications
    • Air Curtain - Selection and Configuration Program
    • Air Curtain - Reference Information
    • Air Curtain - Door Loss Calculation
    • Air Curtain - Comparative AC vs EC
    • Air Curtain - Comparative Electrical Heated vs Heat Pump
    • Calculation - Air temperature increasing
    • Infographics - Virtual Product Applications
  • Gallery
    • Installations
    • Virtual Installations
    • Wellisair Installations
    • Videos
  • References
  • Downloads
  • Company
    • Airtècnics
    • Staff
    • Rosenberg Group
    • Work with Us
  • Contact
    • Contact Us
    • Air Curtains Distributors
    • Wellisair Distributors
  • Català
  • English
  • Español
  • Dansk
  • Deutsch
  • Dutch
  • Eesti keel
  • Français
  • Italiano
  • Latvian
  • Magyar
  • Norwegian
  • Polskie
  • Português
  • Pусский
  • Slovenščina
  • Suomalainen
  • Srpskohrvatski
  • Svenska
  • Türkçe
  • čeština
  1. Home
  2. Novelties
  3. News
  4. What are HEPA filters and how do they work?

What are HEPA filters and how do they work?

Wednesday 17 February 2021

HEPA filters are a system for retaining volatile particles present in the air, generally made of fibreglass. These randomly arranged fibres are extremely fine and form a mesh-like lattice that retains contaminating compounds.

Simulation of the inside of HEPA filterHEPA stands for "High Efficiency Particle Arrester" and is also known as absolute filters. They were developed in 1950 by the Cambridge Filter Company and were exclusively intended for the military industry to combat pollutants from atomic bomb manufacture.

Today, HEPA filters are adapted to all fields: food industry, electronics, pharmaceuticals, chemicals... In medicine for surgery rooms. Inplanes to renovate the air.  Even in the home. In general, anywhere where a higher air purity is required. These absolute filters are effective in keeping the air free of dust, pollen, mites, viruses, bacteria and fine particles measuring less than 0.01 millimetre.

 

HEPA filters clasificationTypeRetention efficiency
EPA:  Efficiency Particle Arrester

E10

≥85%

E11

≥95%

E12

≥99.5%

HEPA:  High Efficiency Particle Arrester

H13

≥99.95%

H14

≥99.995%

ULPA:  Ultra Low Penetration Air

U15

≥99.999 5%

U16

≥99.999 95 %

U17

≥99.999 995%

 

How HEPA filters work

Although the diameter of the fibres is between 0.5 and 2 microns, the randomly arranged meshes retain smaller particles in three ways: particles adhere to the mesh by rubbing against the fibre as the air carrying them passes through; larger particles directly collide with the fibres; and finally, diffusion, related to the random movement of particles in a fluid (Brownian motion) which facilitates their adhesion.

SImulation of how does filters HEPA work

How is particle incidence known?

In order to determine the incidence of particles and the classification of filters according to their retention capacity, MPPS (Most Penetrating Particle Size) particle counting processes are carried out.

The size of these particles is less than one thousandth of a millimetre, i.e. more than 50 times smaller than the diameter of a human hair.

The professionals at Airtècnics will be able to give you advice on which product of the wide range of filtration units and filters best fits to cover all the hygiene needs that your installations require.

  Previous
Share:
Next  

Related News

Filtration unit with Dif-Vent EC fan

airtecnics-air-curtains-cortina-aire-difvent-unidad-filtracion-filtration-unit.jpg

Our laminar flow absolute filtration units Dif-Vent, intended to avoid the external pollution and increase the class of a certain area as it could be a clean room, have been redesigned and now incorporate fans with EC motors. These types of motors are up to 70% more efficient and allow speed regulation by 0-10V signal. With these improvements, ...

Provide your indoors of quality air with the new Airtècnics ventilation boxes to disinfect and purify

_Miniatura.jpg

Until now, ventilation boxes were intended for purely professional use, more specifically in the health sector. Our main customers were laboratories, hospitals and clinics, and also some companies in the food sector. They installed these devices in operating theatres or places where the air quality must be as sterile as possible. But the current ...

Other News

The new air curtain MAXWELL for industrial doors

airtecnics-air-curtains-cortina-aire-door-maxwell-industrial.jpg

Airtècnics launches the MAXWELL air curtain on the market, a new air curtain model for industrial doors that completes the industrial range already available: the MAX and Windbox L, XL air curtains.The main characteristic of the MAXWELL air curtain is its double blow-out jet with Coanda effect. This airflow distribution permits to ...

Airtècnics strong presence in La Roca Village enlargement

airtecnics-cortinas-aire-air-curtains-roca-village-barcelona-gucci-armani-shop.jpg

Airtècnics Company, leader in the design, manufacturing and distribution of equipment, ventilation components and air handling units, has played a prominent role in La Roca Village enlargement project, the complex of outlet top-brands boutiques placed in La Roca del Vallès. The recent enlargement of the premises has implied the ...

The importance of breathing clean air

Miniatura.jpg

Air is an essential element in human survival, and the fact that this air is pure is an exponential benefit to that survival. For the best quality of life, the air that we breath must be the purest as possible because air nourishes with oxygen the lungs, the blood and, consequently, the rest of the organs. Surprisingly, indoor air is five to ten ...

The air curtains are a must

DIAGRAMA-FLETXES-castella-amb-titols.jpg

The air curtains have become an essential element to specify in ventilating and air conditioning projects, thanks to their several advantages and its innovative designs that can make it easier its integration in any environment.An air curtain creates an invisible air barrier above the door, insulating the locale from the climate outdoors and ...

Related News

Filtration unit with Dif-Vent EC fan

airtecnics-air-curtains-cortina-aire-difvent-unidad-filtracion-filtration-unit.jpg

Our laminar flow absolute filtration units Dif-Vent, intended to avoid the external pollution and increase the class of a certain area as it could be a clean room, have been redesigned and now incorporate fans with EC motors. These types of motors are up to 70% more efficient and allow speed regulation by 0-10V signal. With these improvements, ...

Provide your indoors of quality air with the new Airtècnics ventilation boxes to disinfect and purify

_Miniatura.jpg

Until now, ventilation boxes were intended for purely professional use, more specifically in the health sector. Our main customers were laboratories, hospitals and clinics, and also some companies in the food sector. They installed these devices in operating theatres or places where the air quality must be as sterile as possible. But the current ...

Products
Air Curtains
Air Purifier and Disinfection Units
Air Handling Units
Heat Recovery Units
Ventilation Units
Axial Fans
Radial fans
Centrifugal Fans
In Line Fans
Exhaust Fans Units
Cross-Flow Fans
Fan Heaters
Filters and Filter Units
Dampers and Shutters
Rotary Actuators
Regulation
Pressure Switches and Sensors

Air Curtains
Standard Air Curtains
Recessed Air Curtains
Decorative, Bespoke and Customized Air Curtains
Air curtains with Disinfection and Purification System
Heat Pump and Energy Saving Air Curtains
Industrial Air Curtains and Cold Store Air Curtains
Insect control Air Curtains
Revolving Door and Tailor Made Air Curtains
Economic Low Cost Air Curtains

About us
Airtècnics history
Rosenberg group
Contact
Aircurtains Distributors
Wellisair Distributors

Downloads
Air curtains catalogues
Ventilation catalogues
BIM Air Curtains
Air curtains price list
Technical documentation
Quality certificates

Featured content
Clever advanced control
Air curtains selection program
Air curtains installations: References
Air curtains photo gallery
Technology
What is an air curtain?
How air curtains work?
Advantages and benefits of air curtains
Heat pump air curtains
EC air curtains
Airtècnics air curtains
Ventilation

Outlet


+34 93 715 99 88 +34 93 715 99 88
airtecnics@airtecnics.com