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EXPERIMENTAL STUDY ON WATER CURTAIN FIGHTING FIRE BASED ON INFRARED TECHNIQUE

Hui Zhong, Guohua Chen, Saihua Jiang
Frontiers in Heat and Mass Transfer (FHMT) 8 - 17 (2017)


Abstract


Infrared radiation is a type of electromagnetic radiation, although it is invisible to human eyes, it is used widely in industrial, scientific, and medical applications. Pool fire is an emergent accident, which emits intense thermal radiation. In order to quantify the performance of water curtain fighting fire, a testing platform was built and experimental study was carried out. An infrared imager was used to acquire real-time experimental data and respond to the variations of flame in time and space dimensions. Experimental principles and operating procedures were described in detail. The transmissivity, which was used for the quantization of water curtain fighting fire, was defined by a ratio of an average thermal radiation value when water curtain on over the case water curtain off. Experimental results showed that the flame presented obvious fluctuations during combustion. Analysis results on average value of transmissivity over time showed that water curtain with cone-shaped nozzles achieved higher performance than the water curtain with fan-shaped nozzles. The proposed method could be used to provide guidance on the development and design of water curtain fighting fire.


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DOI: http://dx.doi.org/10.5098/hmt.8.17

ISSN: 2151-8629