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The Evolving Temperature Field in a 1 m Methanol Pool Fire

Published

Author(s)

Jian Chen, Kunhyuk Sung, Zhigang Wang, Andy Tam, Ki Yong Lee, Anthony Hamins

Abstract

Thin filament pyrometry is used to measure the time-varying temperature field in a 1 m methanol pool fire. A digital camera with optical filters and zoom lens recorded the emission intensity of an array of 12 µm Silicon-Carbide filaments oriented horizontally at various heights across the steadily burning pool fire. A 50 µm diameter thermocouple measured the temperature at locations corresponding to the filament positions. A correlation was developed between the local probability density functions of the thermocouple time series measurements corrected for radiation and thermal inertia effects and the camera grayscale pixel intensity of the filaments. A regression analysis yields the local mean temperature and its variance. The time series of the temperature field is transformed into average values during consecutive phases of the fire's puffing cycle, providing quantitative insight into the complex and dynamic structure of a turbulent fire.
Citation
Journal of Fire Sciences

Keywords

methanol, pool fires, thin filament pyrometry, temperature field measurements

Citation

Chen, J. , Sung, K. , Wang, Z. , Tam, A. , Lee, K. and Hamins, A. (2021), The Evolving Temperature Field in a 1 m Methanol Pool Fire, Journal of Fire Sciences, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=929240 (Accessed January 29, 2022)
Created June 4, 2021, Updated October 14, 2021