indoor air quality Archives

Modeling of dispersion of aerosolized airborne pathogens exhaled in indoor spaces

By IBEC / April 20, 2023 / Leave a Comment

Since the beginning of the COVID-19 pandemic, there has been a lack of data to quantify the role played by breathing-out of pathogens in the spread of SARS-Cov-2 despite sufficient indication of its culpability. This work aims to establish the role of aerosol dispersion of SARS- Cov-2 virus and similar airborne pathogens on the spread […]

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First page of Ventilation of Health Case Facilities Addendum

Ventilation of Health Care Facilities

By IBEC / January 27, 2023 / Leave a Comment

ANSI/ASHRAE/ASHE Addendum a to ANSI/ASHRAE/ASHE Standard 170-2017 Addendum a clarifies filtration requirements on a space-by-space basis. The filtration levels designated and their rational basis, are included in Informative Appendix C, Table C-1. In brief, this addendum.

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National Guide for Safe Workplaces: COVID-19

By IBEC / February 26, 2022 / Leave a Comment

The COVID-19 pandemic has had an unprecedented impact on the way people live and work. Australian workplaces of all sizes and across all industries have had to significantly modify their operations to protect their workers and the broader community. Until there is an effective vaccine or treatment, there can be no return to business as

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Efficacy of Portable Air Cleaners and Masking for Reducing Indoor Exposure to Simulated Exhaled SARS-CoV-2 Aerosols

By IBEC / February 26, 2022 / Leave a Comment

SARS-CoV-2, the virus that causes COVID-19, can be spread by exposure to droplets and aerosols of respiratory fluids that are released by infected persons when they cough, sing, talk, or exhale. To reduce indoor transmission of SARS-CoV-2 between persons, CDC recommends measures including physical distancing, universal masking (the use of face masks in public places

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ISHRAE COVID-19 Guidance Document for Air Conditioning and Ventilation

By IBEC / February 25, 2022 / Leave a Comment

How to operate air conditioning and ventilation systems to control spread of coronavirus disease (COVID-19) in Residences, Workspaces and Healthcare Facilities.

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COVID-19: Ventilation

By IBEC / February 24, 2022 / Leave a Comment

The evidence continues to suggest that in poorly ventilated indoor spaces, airborne aerosols are a possible transmission route of SARS-CoV-2, and the precautionary advice remains valid. Maintaining good levels of ventilation remains the key focus, even in colder weather conditions, whilst minimising occupant discomfort due to draughts and lower indoor temperatures. The risk of exposure

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Core Recommendations for Reducing Airborne Infectious Aerosol Exposure

By IBEC / February 24, 2022 / Leave a Comment

The following recommendations are the basis for the detailed guidance issued by ASHRAE Epidemic Task Force. They are based on the concept that within limits ventilation, filtration, and air cleaners can be deployed flexibly to achieve exposure reduction goals subject to constraints that may include comfort, energy use, and costs. This is done by setting

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ASHRAE Epidemic Task Force Building Readiness

By IBEC / February 23, 2022 / Leave a Comment

The following Building Readiness information is meant to provide practical information and checklists for how your building should be operating and how to practically check its operation. Actual conditions at any specific building will vary, and the adjustments that should be made will depend on many factors such as local climate, complexity of systems involved

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COVID-19 Common Practices: Advantages, Disadvantages, Risks, and Comments

By IBEC / February 23, 2022 / Leave a Comment

This document provides considerations related to various measures that may be employed in operating rooms (OR) to reduce the spread of COVID-19. This includes advantages, disadvantages, risks, and comments associated with each measure. It contains general feedback from the AIRAH Infection Control and Operating Theatre Practices Special Technical Group (STG) on common practices in infection

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COVID-19 Guidance: School Buildings

By IBEC / February 23, 2022 / Leave a Comment

In Australia ventilation of school buildings is a challenge. In times of COVID-19, the importance of a good indoor air quality is once more emphasised.

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