The Influence of 90 Degree Bends in Closed Pipe System on the Explosion Properties Using Hydrogen-Enriched Methane

This work sought to evaluate the explosion severity on hydrogen enrichment in methane-air mixture explosion. For this purpose, different hydrogen mixture compositions ranges between 4 to 8% v/v were considered. This work was performed using CFD tool FLACS that has been well validated for safety...

Full description

Bibliographic Details
Main Authors:	Siti Z., Sulaiman, Rafiziana, M. Kasman, Miss Kiah, H. M., Kamarizan, Kidam, Mimi H., Hassim, Norazana, Ibrahim, Roshafima, R. Ali
Format:	Article
Language:	English English
Published:	AIDIC Servizi 2014
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/5965/ http://umpir.ump.edu.my/id/eprint/5965/ http://umpir.ump.edu.my/id/eprint/5965/ http://umpir.ump.edu.my/id/eprint/5965/1/The_Influence_of_90_Degree_Bends_in_Closed_Pipe_System.pdf http://umpir.ump.edu.my/id/eprint/5965/3/The%20Influence%20of%2090%20Degree%20Bends%20in%20Closed%20Pipe%20System%20on%20the%20Explosion%20Properties%20Using%20Hydrogen-Enriched%20Methane.pdf

id	ump-5965
recordtype	eprints
spelling	ump-59652015-11-18T02:23:24Z http://umpir.ump.edu.my/id/eprint/5965/ The Influence of 90 Degree Bends in Closed Pipe System on the Explosion Properties Using Hydrogen-Enriched Methane Siti Z., Sulaiman Rafiziana, M. Kasman Miss Kiah, H. M. Kamarizan, Kidam Mimi H., Hassim Norazana, Ibrahim Roshafima, R. Ali TP Chemical technology This work sought to evaluate the explosion severity on hydrogen enrichment in methane-air mixture explosion. For this purpose, different hydrogen mixture compositions ranges between 4 to 8% v/v were considered. This work was performed using CFD tool FLACS that has been well validated for safety studies on both natural gas/methane and hydrogen system. FLACS is used to validate the maximum pressure and flame speed predicted by the CFD tool for combustion of premixed mixtures of methane and hydrogen against the experimental data. Experimental work was carried out in a closed pipe containing 90- degree bends with a volume of 0.41 m3 , operating at ambient conditions. From the experiment observation, it shown that the coupling effect of bending and thermal diffusivity gave the dramatic influent on explosion severity in hydrogen-methane/air at very lean concentration. However, simulation results showed that FLACs is under-predicting the overpressure at very lean concentration of hydrogen in methane/air mixtures. It can be said that lower hydrogen content in methane/air mixture limits the hydrogen diffusivity, leading to the decrease of the burning rate and flame speeds. It is also demonstrated that the presence of 90-degree bend in closed pipe system increases the simulated flame speeds to the factor of 2-3, as compared to the experimental data. There are significant discrepancies between experimental and simulation, however, the results seem conservative in general. AIDIC Servizi 2014 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/5965/1/The_Influence_of_90_Degree_Bends_in_Closed_Pipe_System.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/5965/3/The%20Influence%20of%2090%20Degree%20Bends%20in%20Closed%20Pipe%20System%20on%20the%20Explosion%20Properties%20Using%20Hydrogen-Enriched%20Methane.pdf Siti Z., Sulaiman and Rafiziana, M. Kasman and Miss Kiah, H. M. and Kamarizan, Kidam and Mimi H., Hassim and Norazana, Ibrahim and Roshafima, R. Ali (2014) The Influence of 90 Degree Bends in Closed Pipe System on the Explosion Properties Using Hydrogen-Enriched Methane. Chemical Engineering Transactions, 36. pp. 271-276. ISSN 2283-9216 http://dx.doi.org/10.3303/CET1436046 DOI:10.3303/CET1436046
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Siti Z., Sulaiman Rafiziana, M. Kasman Miss Kiah, H. M. Kamarizan, Kidam Mimi H., Hassim Norazana, Ibrahim Roshafima, R. Ali The Influence of 90 Degree Bends in Closed Pipe System on the Explosion Properties Using Hydrogen-Enriched Methane
description	This work sought to evaluate the explosion severity on hydrogen enrichment in methane-air mixture explosion. For this purpose, different hydrogen mixture compositions ranges between 4 to 8% v/v were considered. This work was performed using CFD tool FLACS that has been well validated for safety studies on both natural gas/methane and hydrogen system. FLACS is used to validate the maximum pressure and flame speed predicted by the CFD tool for combustion of premixed mixtures of methane and hydrogen against the experimental data. Experimental work was carried out in a closed pipe containing 90- degree bends with a volume of 0.41 m3 , operating at ambient conditions. From the experiment observation, it shown that the coupling effect of bending and thermal diffusivity gave the dramatic influent on explosion severity in hydrogen-methane/air at very lean concentration. However, simulation results showed that FLACs is under-predicting the overpressure at very lean concentration of hydrogen in methane/air mixtures. It can be said that lower hydrogen content in methane/air mixture limits the hydrogen diffusivity, leading to the decrease of the burning rate and flame speeds. It is also demonstrated that the presence of 90-degree bend in closed pipe system increases the simulated flame speeds to the factor of 2-3, as compared to the experimental data. There are significant discrepancies between experimental and simulation, however, the results seem conservative in general.
format	Article
author	Siti Z., Sulaiman Rafiziana, M. Kasman Miss Kiah, H. M. Kamarizan, Kidam Mimi H., Hassim Norazana, Ibrahim Roshafima, R. Ali
author_facet	Siti Z., Sulaiman Rafiziana, M. Kasman Miss Kiah, H. M. Kamarizan, Kidam Mimi H., Hassim Norazana, Ibrahim Roshafima, R. Ali
author_sort	Siti Z., Sulaiman
title	The Influence of 90 Degree Bends in Closed Pipe System on the Explosion Properties Using Hydrogen-Enriched Methane
title_short	The Influence of 90 Degree Bends in Closed Pipe System on the Explosion Properties Using Hydrogen-Enriched Methane
title_full	The Influence of 90 Degree Bends in Closed Pipe System on the Explosion Properties Using Hydrogen-Enriched Methane
title_fullStr	The Influence of 90 Degree Bends in Closed Pipe System on the Explosion Properties Using Hydrogen-Enriched Methane
title_full_unstemmed	The Influence of 90 Degree Bends in Closed Pipe System on the Explosion Properties Using Hydrogen-Enriched Methane
title_sort	influence of 90 degree bends in closed pipe system on the explosion properties using hydrogen-enriched methane
publisher	AIDIC Servizi
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/5965/ http://umpir.ump.edu.my/id/eprint/5965/ http://umpir.ump.edu.my/id/eprint/5965/ http://umpir.ump.edu.my/id/eprint/5965/1/The_Influence_of_90_Degree_Bends_in_Closed_Pipe_System.pdf http://umpir.ump.edu.my/id/eprint/5965/3/The%20Influence%20of%2090%20Degree%20Bends%20in%20Closed%20Pipe%20System%20on%20the%20Explosion%20Properties%20Using%20Hydrogen-Enriched%20Methane.pdf
first_indexed	2023-09-18T22:01:26Z
last_indexed	2023-09-18T22:01:26Z
_version_	1777414424453185536

The Influence of 90 Degree Bends in Closed Pipe System on the Explosion Properties Using Hydrogen-Enriched Methane

Similar Items