Furgeson is a senior mechanical engineer with Harriman (Portland, ME). He has nearly 20 years of experience in health care, institutional, and educational projects. He is a licensed professional engineer in Maine and seven other states, and is a member of ASHRAE; the American Society for Healthcare Engineering (ASHE); and the Association of Energy Engineers (AEE).
October gets us to the cusp of winter in a lot of the country. The cold-weather threats to good performance are outnumbered only by the possible strategies to combat them. Here, the authors look at humidity, economizers, pipe and coil insulation and placement, and more as they assess the design opportunities and pitfalls once the temperature takes a dive.
Old drives, short circuits, and steam leaks represent a few of the little things that can bring down your green efforts. Elevate your level of service by attacking them, evaluating options like desiccants and economizers, and incorporating processes like sustainability audits and even recommissioning when needed.
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.