Experimental Study of Water Sprays for the Attenuation of Fire Thermal Radiation-Reference-Cited by-同舟云学术

Experimental Study of Water Sprays for the Attenuation of Fire Thermal Radiation

Published:2000-11-15 Issue:3 Volume:123 Page:534-543
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Dembele S.¹,Wen J. X.¹,Sacadura J.-F.²

Affiliation:

1. Combustion and Fire Modelling Group, School of Mechanical, Aeronautical, and Production Engineering, Kingston University, Roehampton Vale, Friars Avenue, London SW15 3DW, England

2. Centre de Thermique de Lyon (CETHIL), Ba^timent 404, 20 avenue Albert Einstein, 69621 Villeurbanne Cedex, France

Abstract

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.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/123/3/534/5750295/534_1.pdf

Reference6 articles.

1. Thomas, P. H. , 1952, “Absorption and Scattering of Radiation by Water Sprays of Large Drops,” Br. J. Appl. Phys., 3, pp. 385–393.

2. Ravigururajan, T. S., and Beltan, M. R., 1989, “A Model for Attenuation of Fire Radiation Through Water Droplets,” Fire Saf. J., 15, pp. 171–181.

3. Coppalle, A., Nedelka, D., and Bauer, B., 1993, “Fire Protection: Water Curtains,” Fire Saf. J., 20, pp. 241–255.

4. Dembele, S., Delmas, A., and Sacadura, J.-F., 1997, “A Method for Modeling the Mitigation of Hazardous Fire Thermal Radiation by Water Spray Curtains,” ASME J. Heat Transfer, 119, pp. 746–753.

5. Dembele, S., 1998, “Mitigation of Hydrocarbon Fires Radiation by Water Spray Curtains: Modelling and Experimental Validations,” Ph.D. dissertation (French), INSA Lyon, No. 98 ISAL 0043, Lyon, France.

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