Parallel or opposing blades for the best mix of air in VAV systems? What about deploying filtration only when you really need it, thereby avoiding unnecessary pressure drop? Include some ideas about economizer control and another vote for CO2 sensors and demand-controlled ventilation, and you've got some worthwhile - if not always traditional - answers for airside controls blowin' in the wind.
Why was one floor’s laboratory ventilation failing to keep up, when it was even the closest floor to the rooftop fans? Some system sleuthing led two engineers to a fitting conclusion. Read more stories in May Issue 2017.