Experimental study of water sprays for the attenuation of fire thermal radiation

被引:28
|
作者
Dembele, S
Wen, JX
Sacadura, JF
机构
[1] Kingston Univ, Sch Mech Aeronaut & Prod Engn, Combust & Fire Modelling Grp, London SW15 3DW, England
[2] Ctr Therm Lyon, F-69621 Villeurbanne, France
来源
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME | 2001年 / 123卷 / 03期
关键词
droplet; experimental; heat transfer; radiation; sprays;
D O I
10.1115/1.1371921
中图分类号
O414.1 [热力学];
学科分类号
摘要
A laboratory experimental work is carried out to investigate the attenuation ability of water sprays subjected to thermal radiation. The objective is to analyze the key parameters involved in the mitigation properties of this fire protection technique. The spectral transmittances of two types of sprayers, TG03 and TG05, are measured with a Fourier infrared spectrometer under various conditions. The wavelength range varies from 1.5 to 12 mum. The influence on the transmittance of both the flow rate and the pressure ranging from 1 to 7 bars, as well as the effect of the number of spray nozzles are considered. The results clearly show the advantage of small drops with high concentration. An investigation on the multi-ramp curtain configuration also provides valuable information on the mitigation behavior of the whole spray. Key guidelines are provides for fire protections engineering.
引用
收藏
页码:534 / 543
页数:10
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