ASHRAE (Malaysia Chapter) guidelines on improving indoor ventilation in the context of Covid-19

The Malaysia Chapter of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) with its technical resources have established an Epidemic Task Force to address the challenges of the current pandemic and probable future epidemics.

The Malaysia Chapter of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) with its technical resources have established an Epidemic Task Force to address the challenges of the current pandemic and probable future epidemics.

How to achieve the WHO and Department of Occupational Safety & Health (DOSH) Ventilation guideline of 10L/s per person for enclosed indoor environments?

The objective of ventilation in buildings is to provide healthy (outdoor) air for breathing by diluting the pollutants in the building and removing pollutants from it. Achieving the ventilation rate of 10L/s per person is not always possible, especially in enclosed air-conditioned environments and indoor areas where air is recycled. Given the challenges, a combined metrics was created to achieve the equivalent intake of outdoor air.
1. Dilution (i.e., Ventilation)
2. Filtration
3. Low Ozone Level Sterilization

Dilution is achieved by introducing outdoor air to the occupied space to ‘reduce’ the concentration of the virus below the infectious dose.

Filtration or Entrapment of the virus (through recirculating air) is achieved via filters installed in the air conditioning equipment, or with portable air purifiers.

Sterilization technologies utilizing low ozone level within health and safety guidelines of 0.05ppm such as Cerafusion™ Technology serve to deactivate or disintegrate the virus in the air to render it harmless to the occupants.

In combination – increased ventilation, improved filtration and air sterilization technologies, the 10L/s per person ventilation guideline can be achieved.

Given that sterilization with low ozone concentration of 0.05ppm is accepted as one of the strategies to achieve the ventilation rate of 10L/s per person, Cerafusion™ Sterilization Technology not only meets with the criteria but is also proven by several studies to be highly effective in deactivating pathogens such as bacteria and viruses. It will destroy the DNA and RNA of the pathogens, thus removing the hazard. It also addresses the physical challenges in achieving adequate and proper ventilation.

Given that sterilization with low ozone concentration of 0.05ppm is accepted as one of the strategies to achieve the ventilation rate of 10L/s per person, Cerafusion™ Sterilization Technology not only meets with the criteria but is also proven by several studies to be highly effective in deactivating pathogens such as bacteria and viruses. It will destroy the DNA and RNA of the pathogens, thus removing the hazard. It also addresses the physical challenges in achieving adequate and proper ventilation.

If you cannot get enough fresh air into a room by having a proper ventilation system, then Medklinn Cerafusion™ Air & Surface Sterilization (low ozone concentration 0.05ppm ambient) is one of the recommended methods by ASHRAE (Malaysia Chapter) to help fulfil the steps in achieving the prescribed ventilation rate of 10L/s per person, thus creating a safer and hygienic environment. An ASHRAE (Malaysia Chapter) Ventilation Calculator has been created for users of a variety of premises to determine optimal equivalent ventilation solutions and strategies to improve ventilation and meet with WHO and DOSH guidelines.

Medklinn Cerafusion™ Sterilization Technology and all its products meet with international public health and safety standards on the safe use of ozone (0.05ppm).

Medklinn Air+Surface Sterilizers works effectively as a standalone hygiene and safety measure or in combination with existing ventilation strategies or solutions as indicated by ASHRAE (Malaysia Chapter) Epidemic Task Force to meet with DOSH ventilation guideline of 10L/s per person.

Medklinn, Innovating Hygiene

Cerafusion ™ Sterilization Technology (low ozone 0.05ppm ambient) delivers speed and effective coverage to eliminate airborne viruses and reduces risk in enclosed environments. Tested and proven by HygCen Germany in July 2021.

Medklinn Cerafusion™ Sterilization Technology
Efficacy test result by HygCen Germany

https://my.medklinn.com/medklinn_life/efficacy-test-result-by-hygcen-germany/

 MASHRAE Ventilation Calculator, MVC
(Non-Centralized Air-Conditioning units)

Example of Determining Equivalent Ventilation for Emerging Technologies: Controlled O3 Sterilisers

Total Room Volume / time = Equivalent Ventilation Rate
(48m2 x 2.45m) / 0.1666hour = 705.6m3/hr

Medklinn_Cerafusion_Tech01
Medklinn_ProAS2_Specs1

For more information on MASHRAE CORONAVIRUS (COVID-19) RESPONSE RESOURCES:
https://www.ashrae.org.my/coronavirus-covid-19-response-resources/

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