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June 25, 2024

By Michael P. Halloran, Ph.D.
ASHRAE Standard 241-2023, Control of Infectious Aerosols, provides minimum levels of clean airflow for each room while remaining agnostic about how that airflow is provided. This column looks at the energy and installation costs associated with various air cleaning methods in a sample room from a health-care environment. While every room will likely be different, this analysis can hopefully provide good rules of thumb for the most cost-effective, energy efficient means of complying with the standard. Read more
Mohammad Khurram Saeed, Associate Member ASHRAE
Very often, we find it challenging which cooling technology to select for a specific data center. This column provides insight on different free cooling technologies available, along with a guideline for choosing the right one. Read more
Andy Pearson shares some of the upheaval in which scientist Sadi Carnot performed his work, including for the science we now call “thermodynamics.” This article appears in the June 2024 issue of ASHRAE Journal. Check out the article here.
The Life of Sadi Carnot With Andy Pearson
Brandon Gill, P.E., Member ASHRAE
The push for building HVAC electrification poses new challenges for heating large buildings and campuses in a practical and efficient way. One novel solution, time-independent energy recovery, is an all-electric central plant design that combines thermal energy storage and energy recovery. Read more

Is Your Building Operating at Net Zero Energy or Carbon?
Access the June Digital ASHRAE Journal 
This month’s issue of ASHRAE Journal includes topics such as ANSI/ASHRAE Standard 228, CFD analysis of demand-control ventilation for laboratories and the life and legacy of French scientist Sadi Carnot. Access the digital edition here. 

Past Issues 
All articles and columns published in ASHRAE Journal since 1997 are available  in pdf format at no cost to members through ASHRAE’s Technology Portal.
ASHRAE Job Board
CAD & Cartographic Technician PGA TOUR; Ponte Vedra Beach, Fla.
Senior Mechanical Engineer  DiClemente Siegel Design; Southfield, Mich.
Electrical Engineer Traffic Engineering and Facilities Design State of Connecticut; City, Newington, Conn.
Senior MEP Project Manager - Manufacturing Construction Turner & Townsend; Olive Branch, Miss.
Plumbing Laborer - Honolulu SageWater; Honolulu, Hawaii
Associate Editor, Physical Review Letters The American Physical Society; Remote, U.S.
Cal/OSHA Senior Industrial Hygienist Cal/OSHA; San Diego, Calif.
MEP (Mechanical-Electrical-Plumbing) Engineer CAP Government, Inc.; Miami, Fla.
Supplier Webinars
Pursuing Decarbonization Goals: Design and Architectural Impacts of Radiant Systems 
With energy efficiency being one of the four decarbonization pillars in the U.S. Department of Energy’s Industrial Decarbonization Roadmap, this presentation will explore how radiant heating and cooling systems can help achieve decarbonization goals in new construction and renovation projects. This is a continuation of the “Leveraging Radiant and Hydronics to Achieve Decarbonization Goals” webinar held on Oct. 19, 2023. 
Available now. Click here for more info. 

Adiabatic Solutions for Data Centers
This webinar, presented by Condair, delves into the crucial role of humidification and evaporative cooling solutions in enhancing the efficiency of data centers. Participants will gain insights into how these technologies can optimize operational performance, improve energy efficiency, and maintain optimal conditions for sensitive equipment.  
Available now. Click here for more info. 

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