Freije is president of HC Information Resources Inc. (Carlsbad, CA, www.hcinfo.com). He is an author, course instructor, and consultant specializing in Legionella and other waterborne pathogens. Freije earned a B.S. degree in mechanical engineering from Purdue University, a Water Treatment Plant Operations Specialist certificate from California State University, Sacramento, and is a Certified Water Specialist. He is the editor of Legionella Enews, an international newsletter that covers outbreaks and new technology. His book, Legionellae Control in Health Care Facilities: A Guide for Minimizing Risk, has sold in more than 30 countries. Portions of this article were excerpted from Freije’s recent publication Legionella Management Plan for Hotels.
Humidification, air intake location, and cooling tower operation - these three components continue to require vigilance in preventing Legionella from cropping up. Smart choices, from design through ongoing maintenance, can prevent problems and protect health.
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.