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...
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AIDIC Servizi
2014
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| Online Access: | 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 http://umpir.ump.edu.my/id/eprint/5965/ http://dx.doi.org/10.3303/CET1436046 |
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| 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 |
| building | UMPSA Library |
| collection | Institutional Repository |
| content_provider | Universiti Malaysia Pahang Al-Sultan Abdullah |
| content_source | UMPSA Institutional Repository |
| continent | Asia |
| country | Malaysia |
| 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 |
| id | my.ump.umpir.5965 |
| institution | Universiti Malaysia Pahang |
| language | en en |
| publishDate | 2014 |
| publisher | AIDIC Servizi |
| record_format | eprints |
| spelling | my.ump.umpir.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. (Published) http://dx.doi.org/10.3303/CET1436046 DOI:10.3303/CET1436046 |
| 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 |
| title | 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_short | 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 |
| topic | TP Chemical technology |
| url | 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 http://umpir.ump.edu.my/id/eprint/5965/ http://dx.doi.org/10.3303/CET1436046 |
| url_provider | http://umpir.ump.edu.my/ |