The effect of vacuum pressure on the flammability limits of H2 enrichment in natural gas (NG)

Hydrogen- enriched natural gas has been widely used in all over the world for application in gas turbine and internal combustion engine. The theory behind this concept is the addition of hydrogen in natural gas can extend the lean operation limit, improve the lean burn ability, and decrease the emis...

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Main Author:	Azza Nurain, Kairallah
Format:	Undergraduates Project Papers
Language:	English
Published:	2010
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/3096/ http://umpir.ump.edu.my/id/eprint/3096/ http://umpir.ump.edu.my/id/eprint/3096/1/CD5582_AZZA_NURAIN.pdf

id	ump-3096
recordtype	eprints
spelling	ump-30962018-10-16T02:52:31Z http://umpir.ump.edu.my/id/eprint/3096/ The effect of vacuum pressure on the flammability limits of H2 enrichment in natural gas (NG) Azza Nurain, Kairallah TP Chemical technology Hydrogen- enriched natural gas has been widely used in all over the world for application in gas turbine and internal combustion engine. The theory behind this concept is the addition of hydrogen in natural gas can extend the lean operation limit, improve the lean burn ability, and decrease the emission of NOx, CO and unburned hydrocarbon. The aims of this study are to determine the effect of vacuum pressures on the flammability limits of hydrogen enrichment in natural gas. In this experiment, methane is use to replace the natural gas. The experiments were performed in a 20 L closed explosion vessel. The mixtures were ignited by using spark permanent wire that placed at the centre of the vessel. The explosion pressure data is used to determine the flammability limits, when the low pressure is used in the explosion, the explosion limit will become wide. In this study, the result shows the flammability limits of methane is from 5 % volume to 15 % volume of methane and have revealed that the addition of hydrogen in methane /air mixture will reduce the lower flammability limit initially at 5 % volume to 1 % volume of methane at 0.98 bar. As the conclusion, we can come out that explosion of methane at lower pressure with addition of hydrogen has proven benefit of widen the flammability limit of methane, improving the combustion stability, reduce the emission of NOx, CO and unburned hydrocarbon and decreasing the spark timing. Hence, the cold start phenomenon that usually occurs at the initial stage of combustion could be overcome by adding hydrogen at low pressure. 2010-12 Undergraduates Project Papers NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/3096/1/CD5582_AZZA_NURAIN.pdf Azza Nurain, Kairallah (2010) The effect of vacuum pressure on the flammability limits of H2 enrichment in natural gas (NG). Faculty of Chemical & Natural Resources Engineering , Universiti Malaysia Pahang . http://iportal.ump.edu.my/lib/item?id=chamo:58146&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Azza Nurain, Kairallah The effect of vacuum pressure on the flammability limits of H2 enrichment in natural gas (NG)
description	Hydrogen- enriched natural gas has been widely used in all over the world for application in gas turbine and internal combustion engine. The theory behind this concept is the addition of hydrogen in natural gas can extend the lean operation limit, improve the lean burn ability, and decrease the emission of NOx, CO and unburned hydrocarbon. The aims of this study are to determine the effect of vacuum pressures on the flammability limits of hydrogen enrichment in natural gas. In this experiment, methane is use to replace the natural gas. The experiments were performed in a 20 L closed explosion vessel. The mixtures were ignited by using spark permanent wire that placed at the centre of the vessel. The explosion pressure data is used to determine the flammability limits, when the low pressure is used in the explosion, the explosion limit will become wide. In this study, the result shows the flammability limits of methane is from 5 % volume to 15 % volume of methane and have revealed that the addition of hydrogen in methane /air mixture will reduce the lower flammability limit initially at 5 % volume to 1 % volume of methane at 0.98 bar. As the conclusion, we can come out that explosion of methane at lower pressure with addition of hydrogen has proven benefit of widen the flammability limit of methane, improving the combustion stability, reduce the emission of NOx, CO and unburned hydrocarbon and decreasing the spark timing. Hence, the cold start phenomenon that usually occurs at the initial stage of combustion could be overcome by adding hydrogen at low pressure.
format	Undergraduates Project Papers
author	Azza Nurain, Kairallah
author_facet	Azza Nurain, Kairallah
author_sort	Azza Nurain, Kairallah
title	The effect of vacuum pressure on the flammability limits of H2 enrichment in natural gas (NG)
title_short	The effect of vacuum pressure on the flammability limits of H2 enrichment in natural gas (NG)
title_full	The effect of vacuum pressure on the flammability limits of H2 enrichment in natural gas (NG)
title_fullStr	The effect of vacuum pressure on the flammability limits of H2 enrichment in natural gas (NG)
title_full_unstemmed	The effect of vacuum pressure on the flammability limits of H2 enrichment in natural gas (NG)
title_sort	effect of vacuum pressure on the flammability limits of h2 enrichment in natural gas (ng)
publishDate	2010
url	http://umpir.ump.edu.my/id/eprint/3096/ http://umpir.ump.edu.my/id/eprint/3096/ http://umpir.ump.edu.my/id/eprint/3096/1/CD5582_AZZA_NURAIN.pdf
first_indexed	2023-09-18T21:57:08Z
last_indexed	2023-09-18T21:57:08Z
_version_	1777414153971957760

The effect of vacuum pressure on the flammability limits of H2 enrichment in natural gas (NG)

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