Indoor Air Quality
New metrics for filter selection and ‘true cost’ determination
There are new measurement tools to select filters, as well as new holistic concepts which obsolesce traditional individual selection methods. There are also new measurement needs. Measurement Tools: The COVID-19 pandemic has created a major controversy over life quantity vs life quality. It is likely that filtration selection will be permanently impacted by the efforts …
Clean Air Curtain uses high-velocity air & UVGI technology to protect against pathogen spread
The Clean Air Curtain is an air cleaning device that utilizes both a true HEPA filter and a UVGI light to institute a “trap and kill” strategy for the elimination of airborne pathogens, such as SARS-CoV-2. But what is unique about the solution is the incorporation of an “air curtain” that allows for the separation …
Modeling airflow and filtration reveals truths and misconceptions on commonly held beliefs about virus spread
The interior of an airplane is perhaps one of the safest places to be when it comes to avoiding contamination from a virus like COVID-19. This is one of the surprising findings arising from detailed studies of recent so-called “super spreader” events in combination with computational fluid dynamics (CFD) modeling. Together, they highlight the need …
Perspectives & challenges in IAQ – takeaways from AHR Expo
I made the trip to Orlando in February for the 2020 AHR Expo. I traveled to this event with the objective of determining the level of interest in an INDA (Association of the Nonwoven Fabrics Industry)-sponsored Indoor Air Quality coalition. Walking the show allowed me to meet in person with potential IAQ coalition members from …
The IAQ challenge – where do we go from here?
Environmental concerns today often revolve around the outdoor environment – whether it be greenhouse gas emissions and climate change, water security and scarcity, waste disposal and management, and the list goes on. However, the indoor environment is an area where, arguably, there should be more concern, particularly when it comes to air quality. According to …