August 12, 2021 By Luke Powell, WELL AP, LEED AP As I type this, the ambient (outdoor) temperatures are 95°F dry bulb and 79°F wet bulb here in Louisville, KY. Those conditions are above a “design day” for … Continue reading
April 10, 2021 By Luke Powell, WELL AP, LEED AP I recently came across this study that was published March 27, 2021. The study came out of Spain and looked to assess air quality in classrooms after increasing ventilation … Continue reading
March 16, 2021 By Luke Powell, WELL AP, LEED AP Last month, the CDC issued revised recommendations for mitigating the spread of COVID-19. Part of those recommendations included portable air cleaners that use high-efficiency particulate air (HEPA) filters to enhance air … Continue reading
February 25, 2021 By Luke Powell, WELL AP, LEED AP You can read the full document from the Occupational Safety and Health Administration (OSHA), with all recommendations here: https://www.osha.gov/coronavirus/safework I want to focus on the “Improving Ventilation” portion. Despite … Continue reading
On January 6, 2021, the ASHRAE (American Society of Heating, Refrigeration and Air Conditioning Engineers) Epidemic Task Force released new guidance to address control of airborne infectious aerosol exposure. An infectious aerosol is a suspension in air of fine particles … Continue reading
December 20, 2020 By Luke Powell, WELL AP, LEED AP Ventilation. A term that most people outside of the HVAC world rarely heard until a few months ago. As the COVID-19 pandemic escalated, and the CDC and WHO finally … Continue reading
Luke Powell’s presentation to the Louisville ASHRAE Chapter on October 21, 2020 Webinar Recording: Louisville ASHRAE Oct. 2020 Meeting Notes PDF: Aerosols COVID-19 and HVAC – Notes from Louisville ASHRAE Presentation Side Deck: Aerosols, COVID-19 & HVAC – Slide Deck … Continue reading
Yesterday (September 15, 2020) marked the official release of WELL v2. The WELL Building Standard™ version 2 (WELL v2™) is a vehicle for buildings and organizations to deliver more thoughtful and intentional spaces that enhance human health and well-being. The … Continue reading
Droplets Fomites Aerosols Airborne What do all of these terms mean when it comes to the spread of COVID-19? Let’s look at definitions of each first. Droplets – Defined by the CDC and the WHO as projectiles that infect by … Continue reading
There has never been more focus on ventilation in school buildings. This leads to the obvious question – what do we actually know about ventilation in schools, and how important it is? Many studies use indoor CO2 to characterize ventilation, … Continue reading