Citation

Evans DD. Fire Safety J. 1985; 9(2): 147-155.

Copyright

(Copyright © 1985, Elsevier Publishing)

DOI

unavailable

PMID

unavailable

Abstract

A generalized method is presented for determining the response time for thermally actuated sprinklers installed near the ceiling of both large and small compartments. A substitute source for the actual fire is calculated to account for the effects of a warm gas layer in the upper portion of the enclosure on ceiling-layer flow temperatures. Illustrative examples are given for the change in response time for sprinklers with RTI values of 25, 100, and 400 m1/2, s1/2, to a given fire in a series of compartments ranging in floor area from 23.8 m2 (256 ft2) to 24 300 m2 (262 000 ft2). For comparative purposes sprinkler response is also calculated for the limiting case of an unconfined ceiling.