Determination of explosion parameters of hydrogen-air mixtures in closed vessel

Hydrogen has been proposed as a potential fuel to replace fossil fuels in consideration to reduce carbon emissions. This paper presents experimental data on the characteristics of hydrogen-air explosion in air mixture using 20-L sphere. This data includes the maximum explosion pressure, deflagration...

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Main Author:	Norita, Abu Kori
Format:	Undergraduates Project Papers
Language:	English
Published:	2013
Subjects:	QD Chemistry
Online Access:	http://umpir.ump.edu.my/id/eprint/7072/ http://umpir.ump.edu.my/id/eprint/7072/ http://umpir.ump.edu.my/id/eprint/7072/1/Determination_of_explosion_parameters_of_hydrogen-air_mixtures_in_closed_vessel.pdf

id	ump-7072
recordtype	eprints
spelling	ump-70722015-03-03T09:34:08Z http://umpir.ump.edu.my/id/eprint/7072/ Determination of explosion parameters of hydrogen-air mixtures in closed vessel Norita, Abu Kori QD Chemistry Hydrogen has been proposed as a potential fuel to replace fossil fuels in consideration to reduce carbon emissions. This paper presents experimental data on the characteristics of hydrogen-air explosion in air mixture using 20-L sphere. This data includes the maximum explosion pressure, deflagration index, and the maximum rate of pressure rise. Methods and equations are available to estimate these parameters. The experimental maximum explosion pressure agrees with the theoretical value estimated using a chemical equilibrium program if the concentration of hydrogen is from 10 % to 75% in air but not close to the flammable limits. Therefore, the maximum pressure can be estimated conventionally by the equilibrium program regardless of the size of the explosion vessel. Deflagration index for mixture of hydrogen in air, even if normalized by the cube root of the number of vessels explosion, is shown to be sensitive to the vessel volume. The fraction of burnt gas just before the flame contacts the wall has a dominant effect on the deflagration index (Crowl, 2001). From experimental data the deflagration index of hydrogen explosion in 20 L is 212.54 bar.m / sec. The maximum explosion pressure is 2.8 bar at the amount of 22% hydrogen in air and the maximum rate of increase in pressure is 783 bar. Experimental values are different from the theoretical value because there is an error during the experiment run. So, improvements need to be done to get better data experimental procedures in the future. 2013 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/7072/1/Determination_of_explosion_parameters_of_hydrogen-air_mixtures_in_closed_vessel.pdf Norita, Abu Kori (2013) Determination of explosion parameters of hydrogen-air mixtures in closed vessel. Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:75896&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Norita, Abu Kori Determination of explosion parameters of hydrogen-air mixtures in closed vessel
description	Hydrogen has been proposed as a potential fuel to replace fossil fuels in consideration to reduce carbon emissions. This paper presents experimental data on the characteristics of hydrogen-air explosion in air mixture using 20-L sphere. This data includes the maximum explosion pressure, deflagration index, and the maximum rate of pressure rise. Methods and equations are available to estimate these parameters. The experimental maximum explosion pressure agrees with the theoretical value estimated using a chemical equilibrium program if the concentration of hydrogen is from 10 % to 75% in air but not close to the flammable limits. Therefore, the maximum pressure can be estimated conventionally by the equilibrium program regardless of the size of the explosion vessel. Deflagration index for mixture of hydrogen in air, even if normalized by the cube root of the number of vessels explosion, is shown to be sensitive to the vessel volume. The fraction of burnt gas just before the flame contacts the wall has a dominant effect on the deflagration index (Crowl, 2001). From experimental data the deflagration index of hydrogen explosion in 20 L is 212.54 bar.m / sec. The maximum explosion pressure is 2.8 bar at the amount of 22% hydrogen in air and the maximum rate of increase in pressure is 783 bar. Experimental values are different from the theoretical value because there is an error during the experiment run. So, improvements need to be done to get better data experimental procedures in the future.
format	Undergraduates Project Papers
author	Norita, Abu Kori
author_facet	Norita, Abu Kori
author_sort	Norita, Abu Kori
title	Determination of explosion parameters of hydrogen-air mixtures in closed vessel
title_short	Determination of explosion parameters of hydrogen-air mixtures in closed vessel
title_full	Determination of explosion parameters of hydrogen-air mixtures in closed vessel
title_fullStr	Determination of explosion parameters of hydrogen-air mixtures in closed vessel
title_full_unstemmed	Determination of explosion parameters of hydrogen-air mixtures in closed vessel
title_sort	determination of explosion parameters of hydrogen-air mixtures in closed vessel
publishDate	2013
url	http://umpir.ump.edu.my/id/eprint/7072/ http://umpir.ump.edu.my/id/eprint/7072/ http://umpir.ump.edu.my/id/eprint/7072/1/Determination_of_explosion_parameters_of_hydrogen-air_mixtures_in_closed_vessel.pdf
first_indexed	2023-09-18T22:03:23Z
last_indexed	2023-09-18T22:03:23Z
_version_	1777414547624165376

Determination of explosion parameters of hydrogen-air mixtures in closed vessel

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