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HVAC Retrofits

Minnesota Power Retrofit Showcases the Benefits of Electrification in Extreme Climates

Minnesota Power is a regional utility company serving 145,000 customers in northeastern Minnesota.  …
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Coronavirus Coverage

How the COVID-19 Pandemic Has Affected ASHRAE Members

Seventy-six percent of ASHRAE members who responded to a survey said their workload has decreased or stayed the same as a result of the COVID-19 pandemic. …
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HVAC Retrofits

Engineering Renovations: Revitalizing the University of Minnesota's 90-Year-Old Pioneer Hall

Deb Barnes, P.E.
Pioneer Hall, one of four residence halls located within the University of Minnesota’s Superblock residential district, is prominently situated on the east bank of the Mississippi River on the university’s …
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HVAC Retrofits

Motor Control Techniques: VFDs, ECMs, and More, Part 1

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Kevin Ricart Patrice Mulhern Robert Pfaff
The topic of motors and motor control techniques is wide and varied. Part one of this two-part article will cover the principles of alternating-current (AC) motor operation and control.   …
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Commercial HVAC

Advanced DOAS Technologies and Features, Part 2

Juan Carlos Guillen, P.E. Doug Horton, MS, MBA, CFSP Christopher Nowak
Proper building ventilation has been a basic need in modern building performance for decades, yet, somehow, it remains one of the greatest difficulties for sustainable modern building design.  …
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Health Care HVAC

Accepting Airborne Transmission of SARS-COV-2: Our Greatest Fear and Greatest Opportunity

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Stephanie Taylor, M.D., M. Arch, CIC
As we move into summer, many unanswered questions about the COVID-19 pandemic remain. Who gets sick and why?  …
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High-Performance Buildings

Master Equipment Lists Are a Must in Commissioning

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Rebecca T. Ellis, P.E.
One of the easiest-to-create commissioning process deliverables is also one of the most valuable to the building owner/operator. I am talking about a master equipment list (MEL). …
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