Study on temperature variation and pulsation frequency of diesel-wetted wood powder fire with different fuel component ratios and burner diameters

Temperature variation and flame pulsation behavior of diesel-wetted wood powder fire were experimentally studied. Fuel component ratios (the mass ratio of diesel to wood powder) and burner diameters were considered. The results show that due to the difference between flash/pyrolysis point of diesel...

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Autores principales:	Peng Lei, Changkun Chen, Tong Xu, Weibing Jiao, Yulun Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Temperature variation Flame pulsation frequency Diesel-wetted wood powder fire Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/ab1ba5263dc440df805c21266479b10a
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spelling	oai:doaj.org-article:ab1ba5263dc440df805c21266479b10a2021-12-04T04:34:15ZStudy on temperature variation and pulsation frequency of diesel-wetted wood powder fire with different fuel component ratios and burner diameters2214-157X10.1016/j.csite.2021.101389https://doaj.org/article/ab1ba5263dc440df805c21266479b10a2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214157X21005529https://doaj.org/toc/2214-157XTemperature variation and flame pulsation behavior of diesel-wetted wood powder fire were experimentally studied. Fuel component ratios (the mass ratio of diesel to wood powder) and burner diameters were considered. The results show that due to the difference between flash/pyrolysis point of diesel and wood powder, the fuel component that mainly combusts transits from diesel to wood powder gradually. So after ignition, the temperature rises rapidly to 600 °C–800 °C, before getting stable within 200 °C–400 °C. The combustion were divided into three stages: rapid burning, transition stage and steady burning. In steady stage, cases with higher fuel component ratio and larger burner sizes have higher temperature. Transition of fuel component that mainly combusts also caused mass loss rate to decrease, which induced the flame shape to change. Generally, flame pulsation frequency is inversely proportional to burner diameter. However, with the reduction of mass loss rate, flame pulsation frequency decreases slightly. For smaller burner size (D ≤ 7 cm) and lower fuel component ratio (φ = 0.5), flame without pulsation could be observed. A dimensionless correlation regarding flame pulsation frequency for this kind of fire was proposed.Peng LeiChangkun ChenTong XuWeibing JiaoYulun ZhangElsevierarticleTemperature variationFlame pulsation frequencyDiesel-wetted wood powder fireEngineering (General). Civil engineering (General)TA1-2040ENCase Studies in Thermal Engineering, Vol 28, Iss , Pp 101389- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Temperature variation Flame pulsation frequency Diesel-wetted wood powder fire Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Temperature variation Flame pulsation frequency Diesel-wetted wood powder fire Engineering (General). Civil engineering (General) TA1-2040 Peng Lei Changkun Chen Tong Xu Weibing Jiao Yulun Zhang Study on temperature variation and pulsation frequency of diesel-wetted wood powder fire with different fuel component ratios and burner diameters
description	Temperature variation and flame pulsation behavior of diesel-wetted wood powder fire were experimentally studied. Fuel component ratios (the mass ratio of diesel to wood powder) and burner diameters were considered. The results show that due to the difference between flash/pyrolysis point of diesel and wood powder, the fuel component that mainly combusts transits from diesel to wood powder gradually. So after ignition, the temperature rises rapidly to 600 °C–800 °C, before getting stable within 200 °C–400 °C. The combustion were divided into three stages: rapid burning, transition stage and steady burning. In steady stage, cases with higher fuel component ratio and larger burner sizes have higher temperature. Transition of fuel component that mainly combusts also caused mass loss rate to decrease, which induced the flame shape to change. Generally, flame pulsation frequency is inversely proportional to burner diameter. However, with the reduction of mass loss rate, flame pulsation frequency decreases slightly. For smaller burner size (D ≤ 7 cm) and lower fuel component ratio (φ = 0.5), flame without pulsation could be observed. A dimensionless correlation regarding flame pulsation frequency for this kind of fire was proposed.
format	article
author	Peng Lei Changkun Chen Tong Xu Weibing Jiao Yulun Zhang
author_facet	Peng Lei Changkun Chen Tong Xu Weibing Jiao Yulun Zhang
author_sort	Peng Lei
title	Study on temperature variation and pulsation frequency of diesel-wetted wood powder fire with different fuel component ratios and burner diameters
title_short	Study on temperature variation and pulsation frequency of diesel-wetted wood powder fire with different fuel component ratios and burner diameters
title_full	Study on temperature variation and pulsation frequency of diesel-wetted wood powder fire with different fuel component ratios and burner diameters
title_fullStr	Study on temperature variation and pulsation frequency of diesel-wetted wood powder fire with different fuel component ratios and burner diameters
title_full_unstemmed	Study on temperature variation and pulsation frequency of diesel-wetted wood powder fire with different fuel component ratios and burner diameters
title_sort	study on temperature variation and pulsation frequency of diesel-wetted wood powder fire with different fuel component ratios and burner diameters
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ab1ba5263dc440df805c21266479b10a
work_keys_str_mv	AT penglei studyontemperaturevariationandpulsationfrequencyofdieselwettedwoodpowderfirewithdifferentfuelcomponentratiosandburnerdiameters AT changkunchen studyontemperaturevariationandpulsationfrequencyofdieselwettedwoodpowderfirewithdifferentfuelcomponentratiosandburnerdiameters AT tongxu studyontemperaturevariationandpulsationfrequencyofdieselwettedwoodpowderfirewithdifferentfuelcomponentratiosandburnerdiameters AT weibingjiao studyontemperaturevariationandpulsationfrequencyofdieselwettedwoodpowderfirewithdifferentfuelcomponentratiosandburnerdiameters AT yulunzhang studyontemperaturevariationandpulsationfrequencyofdieselwettedwoodpowderfirewithdifferentfuelcomponentratiosandburnerdiameters
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Study on temperature variation and pulsation frequency of diesel-wetted wood powder fire with different fuel component ratios and burner diameters

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