MacFerran is the Hillsborough County School District’s mechanical engineer responsible for the construction and maintenance of the school’s mechanical systems. He is a recipient of the Grand Award for Engineering Ex-cellence by the Florida Institute of Engineers, and was named Engineer of the Year by both the Florida West Coast ASHRAE Chapter and by the Association of Energy Engineers. He has been recognized by WHO’s WHO in America for his work in the school district, and was nominated for the district’s, “Making Miracles Happen Every Day.”
A small team led by an award-winning Florida engineer decided to test conventional wisdom about pressure loss, both in a straight run and in comparing supply and exhaust scenarios. Early returns suggest the data may be flowing in an unexpected fashion.
An engineer with the 9th-largest school district in the United States writes about the IAQ testing and final report that his district commissioned. From offices to classrooms to cafeterias and restrooms, the monitoring was extensive. Read the results and some author comments about acceptable IAQ in schools, the possibility of overdoing fresh air, and the associated costs.
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.