AC-02-03-3 -- Vent-Terminal Locations as Related to Air Infiltration and Indoor Air Quality


James J. Reuther, Ph.D., Robert J. HemphillASHRAE / 2002 / 9 pages

Guidelines are being developed under continuing public review that will eventually help specify minimum separation distances between vent terminals for fuel-burning appliances and doors, windows, or outdoor-air intakes. Results are reported comparing evolving ASHRAE specifications with those in the National Fuel Gas Code (NFGC) of the National Fire Protection Association (NFPA) and the American National Standards Institute (ANSI). Findings include how standards and proposals specify minimum separation distances, how the actual minima compare with each other and with predictions of an air-quality-based vent-plume dispersion model and experimental data, and, finally, the consequences of this new information. The major finding is that some guidelines can be rationalized based on measured or modeled data, whereas others cannot, which should be given consideration before putting any guideline into practice. Units: DualCitation: ASHRAE Transactions, vol. 108, pt. 1, Atlantic City, 2002

Product Code(s): D-6989

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