The Clean Air Act of 1990 and the Montreal Protocol of 1995 spelled the end of CFC-based chillers. Or did it? Today, the reality is that conversion and replacement are slow, and CFC chillers are still chugging along. What happened?
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.