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COVID-19 Ventilation & Air Filtration: Stand-Alone Solutions

COVID-19 Ventilation & Air Filtration: Stand-Alone Solutions

1. What is Covid 19?
Answer: Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus.

2. What are the Covid-19 health concerns around aerosol spread?
Answer: Scientists and researchers are continually gathering new evidence about this disease, including routes of transmission. New data suggests that it is possible for COVID-19 to spread through the air among people who are in enclosed, crowded spaces with poor ventilation for a prolonged period of time. Factors contributing to the transmission may include activities that cause heavy breathing, such as singing, dancing or exercise, especially without precautions such as wearing a mask or keeping a physical distance. However, close, person-to-person contact with an infected person before they show symptoms remains the most common method of transmission.

3. Can mechanical air filtration systems make indoor spaces safe from Covid-19?
ANSWER: If you are in a room that can’t get enough outside air for dilution, consider an air cleaner, also commonly called air purifiers. These machines remove particles from the air, usually using a filter made of tightly woven fibers. They can capture particles containing bacteria and viruses and can help reduce disease transmission.

The U.S. Environmental Protection Agency says that air cleaners can do this for the coronavirus, but not all air cleaners are equal. Before you go out and buy one, there are few things to keep in mind.

In light of the WHO's confirmation that there is "emerging evidence" of airborne transmission of Coronavirus Lev-co has put together a series of products that may assist you in designing and procuring solutions that limit the spread of airborne particles such as the coronavirus. In this section you will find equipment that addresses each of these components required in a ventilation system tailored to capture and filter and return air to your facility:

4. What do the health experts say?
ANSWER: the EPA says: " When used properly, air cleaners and HVAC filters can help reduce airborne contaminants including viruses in a building or small space. By itself, air cleaning or filtration is not enough to protect people from exposure to the virus that causes COVID-19. When used along with other best practices recommended by CDC and others, filtration can be part of a plan to reduce the potential for airborne transmission of COVID-19 indoors."

5. How do different systems work and what are the practical and health concerns?
ANSWER: See our list of Control measures listed below, Please note, the practical and health concerns are listed within each CM:

5.5 What are the common components of a Covid-19 Ventilation system
ANSWER: See Below:

  • Supply Air diffusers and/or Nozzles to direct the clean air to the occupant
  • Transport ducts and hoses
  • Powered and non-powered filter housings and air cleaners
  • Electrical controls (VFD and differential Pressure controls
  • Booster fans (Optional)
  • Capture devices

6. In what kind of environments can mechanical air filtration systems be most effective?
ANSWER: the environments that are best suited for mechanical ventilation are:

  • Nursing homes
  • Fitness clubs
  • Restaurants and bars
  • Meeting rooms
  • Lunchrooms and cafeterias

Here is an article from the CDC discussing this further: https://www.cdc.gov/niosh/docs/2003-136/pdfs/2003-136.pdf

What are the pros and cons of Local Exhaust Ventilation versus HVAC solutions? Are there any other possible solutions?
ANSWER: Local Exhaust Ventilation is best suited to the control and filtration of the covid virus because it controls the virus at source and directs the virus aerosol to the filter unit, typically before it can be inhaled by another person where HVAC simply mixes or dilutes the contaminated air allowing other persons to breathe the air in before the air is filtered from the virus.

Here are a few links to articles written about the capture and control of Covid-19 emissions:
(12-011) Meeting Room, Lunch Room, Coffee Room and Benches Ventilation System
Image for Model 963

Stand-alone VBF1 “2-Zone Air Defence” for Coffeerooms, Lunchrooms, Meeting rooms. and benches. A simple “Pre-engineered” solution with "Clean-to-less-clean" air distribution, HEPA H14 Filtration (99.995% @ 100 Nanometer), UVC (AKA: UVGI) light, Duct and Diffusion Hood.

The VBF ventilation systems have been designed to control, capture, filter and return contaminated air in various workplaces.

This solution employs the ventilation method of "Clean-to-less-clean" air movement coupled with HEPA filtration as recommended by the CDC, ASHRAE, WHO and more. By using this system you will immediately achieve 99.995% clean Air around the Table and after a short While a 98-99% Reduction of the Virus and Bacteria in the rest of the Room.

NEW GUIDANCE FROM CDC, ASHRAE, AND WHO, REGARDING 'CLEAN-TO-LESS-CLEAN AIR MOVEMENT':

Extracted from ASHRAE's Technical Resources for Healthcare Web Page
Airflow from Clean to Less Clean
  • More important than having to wait a longer time between room changeover due to lower ACH
  • More important than air change rate
  • More important than outside air % above 2ACH


By just having a normal conversation, aerosolized virus and bacteria can remain in the air indefinitely, therefore it is important to use forced air to direct these aerosols away from the occupants and allow them to be captured by the HEPA H14 fan/filter unit where the air can be filtered and returned to the space. This limits the transmission of respirable viruses such as Influenza, Coronavirus, common cold, etc. thus substantially reducing the risk of being infected. For example; the zone over and around a 6-person table is approximately 10m3. This gives you a total ACH (Air Changes Per HOUR of 60 VBF1-700 filters.

This solution has a typical payback of 1 year when compared to the costs of 1-week sick leave, per year, per employee.

The systems use a combination of clean-to-less-clean air movement, HEPA Filtration and optional UV light as recommended by both the CDC and ASHRAE. The cleaned air is supplied at a rate of 700 M3/H (400 CFM) or 1000 M3/H (600 CFM) per filter module, directly to the occupants breathing zone. This creates a "Bubble" of constantly filtered clean air around the table and up to 53 air changes in the room.*
Here's how it works:
  • STEP 1: The "Clean-to-less-clean" air movement supplies clean filtered air to the occupants breathing zone through a pre-engineered diffusion hood explicitly designed for the application (EG; meeting room, lunchroom, etc.). This precise air movement is essential as particles of this size can and most often will remain airborne, indefinitely.
  • STEP 2: The ultra-low noise fan draws the air in at floor level where the air is less clean and coolest. The fan is a variable speed centrifugally designed fan that allows you to control the flow
  • STEP 3: The air passes through a silenced chamber engineered to damper the associated noise generated from the movement of air.
  • STEP 4: The Multi-stage filter module filters the contaminated level of 99.995% @ 0.1 Micron (MicroMeters) or 100 NanoMeters NM. Viruses are typically in the Nano particle size. According to the LL University, 'Coronavirus particles are 120 nanometers' in size.
  • STEP 5: The Optional UV light can be purchased to be used as a supplement to help inactivate viruses (EG: SARS-CoV-2) attached to the inner surfaces of the inlet housing.
  • STEP 6: the filtered air is returned to the space through the low-noise smooth duct and on to the Diffuser hood detailed in step 1, thus completing the circuit. This allows the air in a typical room to be changed over 100 times an hour (ACH).
Attachments
004 - Product Videos:
(12-012) Ventilation System for Offices, Waiting rooms, Schools, Restaurants, Fitness studios and Changing Rooms using Spot Diffusions Arm(s)
Image for Model 972
Stand-alone VBF1 “2-Zone Air Defence” for Offices, Waiting rooms, Schools, Restaurants, Fitness studios and Changing Rooms using Spot Diffusions Arm(s). A simple “Pre-engineered” solution with "Clean-to-less-clean" air distribution, HEPA H14 Filtration (99.995% @ 100 Nanometer), optional UVC (AKA: UVGI) light, with easy to position “Stay-in-place” Supply Arm.

The supply Hood is extremely easy to move to the area where it is needed. You can move it in all directions and up/down and it stays where you put it. With a 2m or 3m Flexible Arm you can reach anywhere inside 2m/3m radius.

This solution employs the ventilation method of "Clean-to-less-clean" air movement coupled with HEPA filtration as recommended by the CDC, ASHRAE, WHO and more. By using this system you will immediately achieve 99.995% clean Air around the Table and after a short While a 98-99% Reduction of the Virus and Bacteria in the rest of the Room.

NEW GUIDANCE FROM CDC, ASHRAE, AND WHO, REGARDING 'CLEAN-TO-LESS-CLEAN AIR MOVEMENT':

Extracted from ASHRAE's Technical Resources for Healthcare Web Page
Airflow from Clean to Less Clean
  • More important than having to wait a longer time between room changeover due to lower ACH
  • More important than air change rate
  • More important than outside air % above 2ACH


By just having a normal conversation, aerosolized virus and bacteria can remain in the air indefinitely, therefore it is important to use forced air to direct these aerosols away from the occupants and allow them to be captured by the HEPA H14 fan/filter unit where the air can be filtered and returned to the space. This limits the transmission of respirable viruses such as Influenza, Coronavirus, common cold, etc. thus substantially reducing the risk of being infected. For example; the zone over and around a 6-person table is approximately 10m3. This gives you a total ACH (Air Changes Per HOUR of 60 VBF1-700 filters.

This solution has a typical payback of 1 year when compared to the costs of 1-week sick leave, per year, per employee.

The systems use a combination of clean-to-less-clean air movement, HEPA Filtration and optional UV light as recommended by both the CDC and ASHRAE. The cleaned air is supplied at a rate of 700 M3/H (400 CFM) or 1000 M3/H (600 CFM) per filter module, directly to the occupants breathing zone. This creates a "Bubble" of constantly filtered clean air around the table and up to 53 air changes in the room.*
Here's how it works:
  • STEP 1: The "Clean-to-less-clean" air movement supplies clean filtered air to the occupants breathing zone through a pre-engineered supply arm with hood explicitly designed for the application (EG; meeting room, lunchroom, etc.). This precise air movement is essential as particles of this size can and most often will remain airborne, indefinitely.
  • STEP 2: The ultra-low noise fan draws the air in at floor level where the air is less clean and coolest. The fan is a variable speed centrifugally designed fan that allows you to control the flow
  • STEP 3: The air passes through a silenced chamber engineered to damper the associated noise generated from the movement of air.
  • STEP 4: The Multi-stage filter module filters the contaminated level of 99.995% @ 0.1 Micron (MicroMeters) or 100 NanoMeters NM. Viruses are typically in the Nano particle size. According to the LL University, 'Coronavirus particles are 120 nanometers' in size.
  • STEP 5: The Optional UV light can be purchased to be used as a supplement to help inactivate viruses (EG: SARS-CoV-2) attached to the inner surfaces of the inlet housing.
  • STEP 6: the filtered air is returned to the space through the low-noise smooth duct and on to the Diffuser hood detailed in step 1, thus completing the circuit. This allows the air in a typical room to be changed over 100 times an hour (ACH).
Attachments
004 - Product Videos:
(12-013) Ventilation system for Schools, Restaurants, Fitness studios and Changing Rooms
Image for Model 970

VBF/H-ADO/Hepa Filter Coronavirus/Air Purifier COVID - H14

Professional Airpurifiers for Coffee-, Lunch- and Meeting Rooms, Offices, Waiting Rooms, Schools, Restaurants, Fitnesstudios, Changing Rooms… Adjustable Direction Outlets 1/2/4.

VBF/H-ADO HEPA H14 Professional Airpurifiers are used indoors to reduce Corona- and other Virus in the air. They come in two sizes. 700m3/hour and 1000m3/hour maximum airflow. It is recommended to filter the total air volume in a room 6 times/hour. The VBF/H-ADO models are for larger rooms.

With ADO (Adjustable Direction Outlet) you can direct the cleaned air in any direction and with up to 4 nozzles. This makes it possible to reduce the overall concentration of Virus and Bacteria in larger rooms faster. The 99.995% cleaned air is blown out, in a controlled direction, into the area where people inhale. The cleaned air is better mixed with the rest of the air in the room. The concentration of Virus/Bacteria in the air which come back to the Filter Unit is higher, which means that more Virus/Bacteria are filtrated in a shorter time. The Virus and Bacteria in the room will be reduced faster. VBF-700 is for rooms up to 40m2. VBF-1000 is for rooms up to 60m2.
(12-015) 45 Degree Adjustment Nozzle (1-4) Ventilation System (Coffee-, Lunch- and Meeting rooms, Offices, Waiting rooms, Schools, Restaurants, Fitness studios, Changing Room, etc.)
Image for Model 968

VBF/ADO/Hepa Filter Coronavirus/Air Purifier COVID - H14

Adjustable Direction Outlets. 1/2/4 Outlets.

Professional Air-purifiers for Coffee-, Lunch- and Meeting rooms, Offices, Waiting rooms, Schools, Restaurants, Fitness studios, Changing Rooms…

How it works!

VBF/ADO HEPA H14 Professional Airpurifiers are used indoors to reduce Corona- and other Virus in the air. They come in two sizes. 700m3/hour and 1000m3/hour maximum airflow. It is recommended to filter the total air volume in a room 6 times/hour. The ADO and H-ADO models are for larger rooms. With ADO (Adjustable Direction Outlet) you can direct the cleaned air in any direction and with up to 4 nozzles. This makes it possible to reduce the overall concentration of Virus and Bacteria in larger rooms faster. The cleaned air is blown out in a controlled direction and is better mixed with the rest of the air in the room. The concentration of Virus and Bacteria in the air which come back to the Filter Unit is higher, which means that more Virus/Bacteria is filtered in a shorter time. The concentration in the room will be reduced faster. VBF-700 is for rooms up to 40m2. VBF-1000 is for rooms up to 60m2.
Attachments
004 - Product Videos:
(12-016) Multipurpose Ventilation System (Coffee,- Lunch-, Meeting- and Waiting Rooms, Offices, Schools, Restaurants, Fitnesstudios, Changing rooms, etc.)
Image for Model 964

VBF-Hepa Filter Coronavirus/Air Purifier COVID - H14

Professional Airpurifiers for Coffee,- Lunch-, Meeting- and Waiting Rooms, Offices, Schools, Restaurants, Fitnesstudios, Changing rooms …

VBF HEPA H14 professional Airpurifiers are used indoors for reducing Corona- and other Virus in the air. They come in two sizes. 700m3/h and 1000m3/h. It is recommended to filter the total air volume in a room 6 times/hour.

For your Safety each HEPA H14 filter is delivered with a Certificate and is leak tested. The efficiency is over 99.995% on particles and Virus which are under/over 0.16 micrometer (down to 0.01 micrometer). The Filters are manufactured in Europe by a HEPA H14 specialist, well known all over the world.

The VBF-HEPA H14-UVC models are equipped with HEPA H14 filter and UVC Lamps.
Attachments
004 - Product Videos: