Xie QY, Zhang L, Zhang HP (2009d) Experimental study on water spray suppression on burning upholstered chair in an enclosure with different application times. Fire and Materials 33(5), 245-256. [In English]

Web link: http://dx.doi.org/10.1002/fam.1002

Keywords:

upholstered chair, water spray, application time, ISO 9705, cbuf

Abstract: The objective of this work is to investigate the effects of the application time of water spray on the burning upholstered chair in an enclosure. A series of experiments are conducted with the same water flow rate in an ISO 9705 fire test room in which a water spray system is installed. Several identical upholstered chairs are used in the experiments with the application times 20, 25, 30, 40 and 45 s after the ignition of upholstered chair, respectively. The results show that there is nearly an exponential relationship between the peak heat release rates and the relative application times of water spray. It is also shown that there is a polynomial relationship between the relative time for the peak heat release rate and the relative application time of water spray. However, there is an exponential relationship between the whole relative extinguishing time and the relative application time of water spray. A sudden increase is detected before the decreasing of CO generation rates after the water spray is applied on the burning upholstered chair. The average temperatures of the upper hot smoke layer under the ceiling will generally be lower with the earlier application of water spray. Copyright (C) 2009 John Wiley &, Sons, Ltd.