Numerical investigation of heat storage in a chemical heat storage system for saving exhaust gas energy in internal combustion engines

Cao, DL; Hong, G; Le, TA

Numerical investigation of heat storage in a chemical heat storage system for saving exhaust gas energy in internal combustion engines

Cao, DL Hong, G

Le, TA

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Publisher:: IOP Publishing
Publication Type:: Conference Proceeding
Citation:: IOP Conference Series: Earth and Environmental Science, 2020, 463, (1)
Issue Date:: 2020-04-06

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Field	Value	Language
dc.contributor.author	Cao, DL
dc.contributor.author	Hong, G https://orcid.org/0000-0002-1905-1161
dc.contributor.author	Le, TA
dc.contributor.editor	Tong, CW
dc.contributor.editor	ChinTsan, W
dc.contributor.editor	Huat, BSL
dc.contributor.editor	Xiang, X
dc.date	2019-12-11
dc.date.accessioned	2021-05-12T06:34:50Z
dc.date.available	2021-05-12T06:34:50Z
dc.date.issued	2020-04-06
dc.identifier.citation	IOP Conference Series: Earth and Environmental Science, 2020, 463, (1)
dc.identifier.issn	1755-1307
dc.identifier.issn	1755-1315
dc.identifier.uri	http://hdl.handle.net/10453/148874
dc.description.abstract	Thermal energy storage has become more and more important to improving the overall efficiency of energy systems by utilising the wasted energy. This study was aimed to develop a chemical heat storage (CHS) system using EM8block and its dehydration and hydration reactions to recover the thermal energy wasted by the exhaust gases in internal combustion (IC) engines. To experimentally investigate the performance of the CHS system in the heat storage process, a CHS system was developed and tested on a Diesel engine (D1146TI). To further investigate the CHS system in engine conditions more than that in experiments, a CFD model of the CHS system was developed using the commercial code of ANSYS FLUENT as a platform. In the 60 minutes mode, the maximum stored energy in the CHS system was 21.9 MJ which was equivalent to 4.78% of exhaust gas energy with 72.54% of the EM8block reacted at the full engine load. The stored energy and the percentage of reacted EM8block decreased with the decrease of the engine load. In the full charge mode, the simulation results showed that the time on fully charge of the CHS reduced with the increase of the engine load and that the shortest time was 67.1 minutes at full engine load. This time on full charging increased to 110.3 minutes at 50% engine load. The simulation results also showed that the maximum percentage of the exhaust gas energy stored in the CHS system was 7.14% at 70% engine load.
dc.language	en
dc.publisher	IOP Publishing
dc.relation.ispartof	IOP Conference Series: Earth and Environmental Science
dc.relation.ispartof	International Conference on Sustainable Energy and Green Technology
dc.relation.ispartofseries	IOP Conference Series-Earth and Environmental Science
dc.relation.isbasedon	10.1088/1755-1315/463/1/012157
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Numerical investigation of heat storage in a chemical heat storage system for saving exhaust gas energy in internal combustion engines
dc.type	Conference Proceeding
utslib.citation.volume	463
utslib.location.activity	Thailand
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2021-05-12T06:34:48Z
pubs.finish-date	2019-12-14
pubs.issue	1
pubs.publication-status	Published
pubs.start-date	2019-12-11
pubs.volume	463
utslib.citation.issue	1

Abstract:

Thermal energy storage has become more and more important to improving the overall efficiency of energy systems by utilising the wasted energy. This study was aimed to develop a chemical heat storage (CHS) system using EM8block and its dehydration and hydration reactions to recover the thermal energy wasted by the exhaust gases in internal combustion (IC) engines. To experimentally investigate the performance of the CHS system in the heat storage process, a CHS system was developed and tested on a Diesel engine (D1146TI). To further investigate the CHS system in engine conditions more than that in experiments, a CFD model of the CHS system was developed using the commercial code of ANSYS FLUENT as a platform. In the 60 minutes mode, the maximum stored energy in the CHS system was 21.9 MJ which was equivalent to 4.78% of exhaust gas energy with 72.54% of the EM8block reacted at the full engine load. The stored energy and the percentage of reacted EM8block decreased with the decrease of the engine load. In the full charge mode, the simulation results showed that the time on fully charge of the CHS reduced with the increase of the engine load and that the shortest time was 67.1 minutes at full engine load. This time on full charging increased to 110.3 minutes at 50% engine load. The simulation results also showed that the maximum percentage of the exhaust gas energy stored in the CHS system was 7.14% at 70% engine load.

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http://hdl.handle.net/10453/148874