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 μm. 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 provided for fire protection engineering.
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Experimental Study of Water Sprays for the Attenuation of Fire Thermal Radiation
S. Dembele,
S. Dembele
Combustion and Fire Modelling Group, School of Mechanical, Aeronautical, and Production Engineering, Kingston University, Roehampton Vale, Friars Avenue, London SW15 3DW, England
E-mail: s.dembele@kingston.ac.uk
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J. X. Wen,
J. X. Wen
Combustion and Fire Modelling Group, School of Mechanical, Aeronautical, and Production Engineering, Kingston University, Roehampton Vale, Friars Avenue, London SW15 3DW, England
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J.-F. Sacadura
J.-F. Sacadura
Centre de Thermique de Lyon (CETHIL), Ba^timent 404, 20 avenue Albert Einstein, 69621 Villeurbanne Cedex, France
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S. Dembele
E-mail: s.dembele@kingston.ac.uk
Combustion and Fire Modelling Group, School of Mechanical, Aeronautical, and Production Engineering, Kingston University, Roehampton Vale, Friars Avenue, London SW15 3DW, England
J. X. Wen
Combustion and Fire Modelling Group, School of Mechanical, Aeronautical, and Production Engineering, Kingston University, Roehampton Vale, Friars Avenue, London SW15 3DW, England
J.-F. Sacadura
Centre de Thermique de Lyon (CETHIL), Ba^timent 404, 20 avenue Albert Einstein, 69621 Villeurbanne Cedex, France
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division November 8, 1999; revision received November 15, 2000. Associate Editor: J. Gore.
J. Heat Transfer. Jun 2001, 123(3): 534-543 (10 pages)
Published Online: November 15, 2000
Article history
Received:
November 8, 1999
Revised:
November 15, 2000
Citation
Dembele, S., Wen, J. X., and Sacadura, J. (November 15, 2000). "Experimental Study of Water Sprays for the Attenuation of Fire Thermal Radiation ." ASME. J. Heat Transfer. June 2001; 123(3): 534–543. https://doi.org/10.1115/1.1371921
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