Ventilation and IAQ

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Engineers retrofitting non-air conditioned schools to variable refrigerant flow (VRF) the last few years have relied on centralized packaged DOAS to comply with ASHRAE 62.1 outdoor air standards.

With last month’s publication, Engineered Systems magazine and I completed the 25th year of publishing this column.

St. Luke's Cataract & Laser Institute continues to pioneer the use of ultraviolet (UV) germicidal irradiation light systems for disinfecting surgery rooms and promoting clean HVAC system coils.

They don’t make them like they used to — especially when it comes to turn-of-the-century and post-WWI era infrastructure.

Before we get into the status of modern fire suppression and the special risks of solid-fuel cooking, let’s look at several real-world commercial kitchen events and the patterns that emerge.

This month’s Facility File will focus on the B2B January test for hotels, motels, and dormitories described in the 2015 ASHRAE Handbook — HVAC Applications.

Now that I have your attention, let’s talk about the pros and cons of inhaled carbon dioxide.

This month, I am continuing my series on commissioning “simple” HVAC equipment with hydronic unit heaters.

This month, I begin a few columns about technical commissioning issues.

With nine terminals totaling several million square feet of floor space, Los Angeles International Airport (LAX) is one of world’s busiest airports.