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An Apparatus for Evaluating Liquid Fire Suppressants



Jiann C. Yang, Michelle K. Donnelly, William L. Grosshandler, N C. Prive


Cup burners have been extensively used as a fire suppression efficiency screening tool for gaseous halon alternatives. In the search for alternatives to halons in fire suppression, it is likely that several types of condensed-phase compounds will be identified which may be delivered in droplet or aerosol form. Although cup burners have been used for evaluating condensed-phase agents (e.g., sodium bicarbonate powder), currently there is no apparatus designed specifically for screening liquid agents under well-controlled experimental conditions. The objective of this work is to design, construct and demonstrate a bench-scale device capable of screening the fire suppression efficiency of liquid agents. The design of the apparatus is based on a well-characterized flame, a means to facilitate the introduction of liquid agents, and a way to generate liquid droplets. These individual components will be described in detail in the following sections. Since the project is on-going, its current status will be discussed, and some encouraging preliminary results will be presented.
Special Publication (NIST SP) - 984-4
Report Number


halon alternatives, halons, blowoff, burners, diffusion flames, droplets, fire suppression


Yang, J. , Donnelly, M. , Grosshandler, W. and Prive, N. (1998), An Apparatus for Evaluating Liquid Fire Suppressants, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed May 21, 2024)


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Created May 12, 1998, Updated February 19, 2017