Simulating the Effects of HVAC Induced Air Flow From Slot Diffusers on Detector Response.
Simulating the Effects of HVAC Induced Air Flow From
Slot Diffusers on Detector Response.
Klote, J. H.; Forney, G. P.; Davis, W. D.; Bukowski, R.
NISTIR 5908; 79 p. December 1996.
Sponsor:National Fire Protection Assoc., Quincy, MA
Available from: National Technical Information Service
(NTIS), Technology Administration, U.S. Department of
Commerce, Springfield, VA 22161.
1-800-553-6847 or 703-605-6000;
Order number: PB97-132393
heating; ventilation; air conditioning; fire models;
Rapid activation of fire protection systems in response
to a growing fire is one of the important factors
required to provide for life safety and property
protection. Airflow due to the heating, ventilating and
air conditioning (HVAC) system can significantly modify
the flow of smoke along the ceiling and must be taken
into consideration when a particular system is designed.
At present, the standards used to guide the design of
systems contain very little quantitative information
concerning the impact of airflow produced by HVAC
systems. This project is part of a multi year,
International Fire Detection Research Project sponsored
by the National Fire Protection Research Foundation
(NFPFR), and it describes the results of a series of
numerical simulations of smoke movement in response to
HVAC flows resulting from slot diffusers, slot returns
and rectangular returns. The computer model calculated
activation times throughout the fire driven flow field.