The 2021 edition of AMCA’s award-winning magazine, AMCA inmotion, is here.

The digital version is now available on the AMCA website, with the print version polybagged and set to mail with the November issue of ASHRAE Journal on Wednesday.

Edited by AMCA Manager of Industry Content Scott Arnold and art-directed by Chicago-based freelance designer, illustrator, and photographer Bonnie James, the 2021 edition of AMCA inmotion consists of the following articles:

• “AMCA COVID-19 Guidance for Large-Diameter Ceiling Fans” by Michael Ivanovich, Aaron Gunzner, and Scott Arnold, AMCA International—Over a 12-month period, AMCA, in collaboration with an international team of scientists, engineers, and researchers, executed a series of numerical simulations to investigate the impact of large-diameter ceiling fans on COVID-19 exposure in a warehouse. This article provides a high-level summary of the project’s findings and resultant guidance.
• “Introducing Ceiling Fan Energy Index (CFEI)” by the AMCA International North America Region Air Movement Advocacy Committee—In a highly unusual development, a law was passed in 2020 to change the metric used to rate the efficiency of large-diameter ceiling fans made for sale in the United States and Canada from cubic feet per minute per Watt (cfm/W) to ceiling fan energy index (CFEI). This article, adapted from the recently published AMCA white paper “Introducing Ceiling Fan Energy Index (CFEI) and Changes to the U.S. Regulation for Large-Diameter Ceiling Fans,” describes cfm/W and explains why a change in metric was needed.
• “Control Dampers in Ventilation Strategies for Data Centers” by Michael J. Bulzomi, AMCA North America Region Air Control Advocacy Committee—The mission-critical nature of information-technology equipment demands precise control of temperature, humidity, and airflow inside data centers to prevent costly and potentially catastrophic failures. This article provides a foundational understanding of the various types of control dampers available for use in data-center ventilation and presents recommendations for specific performance requirements.
• “Design of Parking-Garage Ventilation for Pollutant and Smoke Control” by Geoff Sheard, DSc, U.S. Technical Advisory Group to International Organization for Standardization Technical Committee 117, Fans—This article provides guidance on the use of computational methods for the design of unducted parking-garage ventilation systems that minimize both first and operating costs, dynamically manage the removal of pollutants, and, critically, are optimized for a range of fire scenarios.
• “Your Questions About Severe-Duty Louvers Answered” by Doug Petty; Michael J. Bulzomi; Anthony E. Jackson Sr., CSI, CDT, LEED GA; and Eric Sposito, CDT, AMCA Louver Marketing Subcommittee—As building codes and architectural-product requirements for hurricane-prone Florida gain wider adoption, the international authority on air-system components clarifies some of the confusion surrounding louver design and application.
• “Inside the AMCA Laboratory and Certified Ratings Program” by Scott Arnold, AMCA International—This article explains the workings of the AMCA Certified Ratings Program and illuminates why products that undergo the rigorous certification process deserve to be specified ahead of products that do not. Additionally, it highlights the capabilities and services of the AMCA International laboratory in Arlington Heights, Ill.

AMCA wishes to thank the following advertisers for their support of the 2021 edition of AMCA inmotion: AAON, Aire Technologies Inc., American Ultraviolet, Berner International, Big Ass Fans, ebm-papst, Greenheck Fan Corp., Hunter Industrial Fan, Loren Cook Co., Mars Air Systems, Nailor Industries Inc., The New York Blower Co., Pottorff, Ruskin, and Systemair/Fantech.

For an index of articles, links to the digital editions of all back issues, and a list of awards and honors the magazine has received in recent years, see the updated AMCA inmotion page on the AMCA website.

Scott Arnold is accepting article proposals for the 2022 edition of AMCA inmotion. Contact him at sarnold@amca.org or +1 847-704-6335.