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Interaction of an Isolated Sprinkler Spray and a Two-Layer Compartment Fire Environment.


pdf icon Interaction of an Isolated Sprinkler Spray and a Two-Layer Compartment Fire Environment. (1284 K)
Cooper, L. Y.

International Journal of Heat and Mass Transfer, Vol. 38, No. 4, 679-690, March 1995.

Sponsor:

American Architectural Manufacturers Assoc., Des Plaines, IL

Keywords:

building fires; compartment fires; computer models; fire models; mathematical models; vents; sprinklers; sprinkler response; zone models

Abstract:

A model is developed to simulate the interaction of a sprinkler and a two-layer fire environments under arbitrary conditions of sprinkler evaluation, upper- and lower-layer thickness and temperature. The sprinkler is characterized by water flow rate and four measurable device parameters. The model simulates the effects of the sprinkler spray as it entrains, drives downward, humidifies, and cools gases in the upper and lower layers. It predicts the flow rates of mass, enthalpy, products of combustion, and evaporated water to each of the two layers as a result of sprinkler operation. Results of example calculations are presented.