Ventilation and IAQ

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Unfortunately for indoor mushroom farmers, the very environmental conditions that produce bumper mushroom crops also promote mold growth in farm air conditioning systems,

When it comes to ductwork for VAV systems, could the shortest path to better air handling cost and efficiencies be round (or spiral)? Aided by static regain and streamlined installation, here’s the case for no more corners.

A little lesson in earth science can help with occupant comfort.

At project demolition, do you recycle, reuse, or replace existing equipment? And who decides?

Is there a standard default airflow rate for VAV fume hoods? The author works through the situation in pursuit of that answer and other effective alternatives.

The right questions might give you some design maneuverability among tight requirements.

Don’t leave out the topic of safety in your building design conversations.

Want some inspiration for health care IAQ? Look to the lungs.

Although it’s only 25% complete, the Central Ohio Transit Authority’s (COTA) ongoing $75 million conversion to compressed natural gas (CNG) fueled buses is already saving more than 2.5 million gallons of diesel fuel and emitting 100 tons less bus emission contaminants annually in the greater Columbus, Ohio, area. 

ASHRAE 170 is just the baseline for the fight against hospital acquired infections (HAIs). The ongoing human and financial tolls taken by these infections point to the need for engineers and facilities to raise their IAQ game wherever possible. Move beyond the minimum and get into the what, where, and how of HEPA filtration, ultraviolet technology, and catalytic air cleaners.