Well, a whole lot of the time, according to the author. Consider his
interesting perspective on the effort we pour into increasing
efficiency in buildings and what it gets us in the end with regard to
consumption. Also, can you guess the one sector that has actually
managed to reduce usage? Find out and read some theories why.
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.