Reactors for AC drives are available as either AC reactors or DC reactors (DC link chokes). Both serve the same main purpose: to smooth the current flow to the AC drive, and reduce damaging harmonics produced on the power line.
More than ever, existing buildings are the key to future efficiency gains. And yet, better equipment isn’t everything. The knowledge and behaviors of both occupants and operations staff play critical roles, perhaps greater than you realize. An integrated team approach, smart training, and the Hawthorne Effect are but three factors contributing to your next retrofit’s ultimate fate.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.