As one of the founding principals of Mazzetti
& Associates’ Portland office, Gulick has been a hands-on leader of the
firm for over 28 years. A licensed mechanical engineer in Oregon, Washington,
Arizona, and Virginia, his innovative approach has contributed to
award-winning, state-of-the-future sustainable designs. He has played a
significant design role in hospital central plant design and major health care
facilities. He is a member and past Oregon Chapter president of ASHRAE and is a
member of the National Society of Professional Engineers and the Consulting
Engineers of Oregon.
Two North American
consulting firms set out to investigate the safety and economic possibilities
of using displacement in hospitals instead of traditional ventilation
strategies. Here, one firm reports on testing in an ER waiting room setting
(which itself can be an infection transmission problem waiting to happen). The
research also raised a couple of unexpected questions – when does overhead
ventilation “imitate” displacement, and are air changes always all they’re
cracked up to be?
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.