EXPERIMENTAL STUDY ON WATER CURTAIN FIGHTING FIRE BASED ON INFRARED TECHNIQUE

Infrared radiation is a type of electromagnetic radiation and 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 is built and experimental studies are carried out. An infrared imager is used to acquire real-time experimental data and respond to the variations of flame in time and space dimensions. Experimental principles and operating procedures are described in detail. The transmissivity is used to quantify the performance of water curtain fighting fire. Experimental results show that the flame presents obvious fluctuations during combustion. Analysis on the average value of transmissivity over time show that a water curtain with cone-shaped nozzles achieved higher performance of fighting fire than a water curtain with fan-shaped nozzles. The proposed method can be used to provide guidance on the development and design of water curtain fighting fire.