system experts see flow as a key step to optimizing system efficiency. Cutting
down required tubing size, insulated PEX for district systems, and
variable-speed pumps to pin down a chiller’s exact needs are three points of
attack in the modern campaign against waste.
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.