Zhang YF, Zhu W, Zhou XM, Qin J, Liao GX (2007) Experimental study of suppressing PVC fire with water mist using a cone calorimeter. Journal of Fire Sciences 25(1), 45-63. [In English]

Web link: http://dx.doi.org/10.1177/0734904107062491

Keywords:

PVC fire, water mists, cone calorimeter LDV/APV

Abstract: Effect of water mist on the small-scale solid fuel PVC (poly vinyl chloride) fire in a confined space has been studied experimentally using a cone calorimeter. In this study, the combustion characteristics of PVC, and the interaction between the water mists and the diffusion flame in a confined space with proper ventilation control are studied under various conditions in the cone calorimeter. The water mist is generated by a single pressure nozzle and the diffusion flame is produced from PVC samples, respectively. The Laser Doppler Velocimetry/Adaptive Phase Doppler Velocimetry LDV/APV system is employed to determine the water mist characteristics. The results of the test showed that the combustion of PVC is a two-step process, the water mist suppress the diffusion flame in a confined space via oxygen displacement, heat extraction, and heat radiant attenuation. Heat extraction (flame cooling and fuel surface cooling) plays a dominant role by suppressing the PVC fire when the water mists of enough volume flux are applied to the diffusion flame in a confined space. The higher the operational pressure, the easier the suppression.