Time-averaged Heat Transfer Correlation for Direct Injection Hydrogen Fueled Engine

This paper presents the development of an empirical correlation for the prediction of time averaged heat transfer for a direct-injection hydrogen fueled engine. Computer simulation based on one-dimensional gas dynamics approach was used to perform the time-averaged analysis for the in-cylinder heat...

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Main Authors:	Khalaf I., Hamada, M. M., Rahman, A. Rashid, A. Aziz
Format:	Article
Published:	Elsevier Ltd 2012
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/6847/ http://umpir.ump.edu.my/id/eprint/6847/ http://umpir.ump.edu.my/id/eprint/6847/

id	ump-6847
recordtype	eprints
spelling	ump-68472018-01-25T04:04:58Z http://umpir.ump.edu.my/id/eprint/6847/ Time-averaged Heat Transfer Correlation for Direct Injection Hydrogen Fueled Engine Khalaf I., Hamada M. M., Rahman A. Rashid, A. Aziz TJ Mechanical engineering and machinery This paper presents the development of an empirical correlation for the prediction of time averaged heat transfer for a direct-injection hydrogen fueled engine. Computer simulation based on one-dimensional gas dynamics approach was used to perform the time-averaged analysis for the in-cylinder heat transfer. Simulation was performed for 1800 < rpm < 5000, 0.2 < 4 < 1.2 and 130 deg before top dead center (BTDC) < SOI < 70 deg BTDC. Experimental measurements were used to verify the developed model, during which the engine performance could be determined to a reasonable accuracy of 10%. The equivalence ratio (4) was considered as a governing variable, through the new correlation for the time averaged heat transfer. A nonlinear regression approach was used to develop the new correlations. In the case of all the simulation data, the proposed correlations have a satisfactory performance with the determination coefficient (R2) of about 0.99. A relative error of 10% was found in more than 95% of the simulation data. However, the relative error was reduced to about 50% in the newly developed correlations, which increased its reliability to more than the Taylor’s correlation for representing the actual data. Due to the general form, hydrocarbon fuel is suitable for the newly developed correlations that are theoretically made. Elsevier Ltd 2012 Article PeerReviewed Khalaf I., Hamada and M. M., Rahman and A. Rashid, A. Aziz (2012) Time-averaged Heat Transfer Correlation for Direct Injection Hydrogen Fueled Engine. International Journal of Hydrogen Energy, 37. pp. 19146-19157. ISSN 0360-3199 http://dx.doi.org/10.1016/j.ijhydene.2012.09.113 DOI: 10.1016/j.ijhydene.2012.09.113
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Khalaf I., Hamada M. M., Rahman A. Rashid, A. Aziz Time-averaged Heat Transfer Correlation for Direct Injection Hydrogen Fueled Engine
description	This paper presents the development of an empirical correlation for the prediction of time averaged heat transfer for a direct-injection hydrogen fueled engine. Computer simulation based on one-dimensional gas dynamics approach was used to perform the time-averaged analysis for the in-cylinder heat transfer. Simulation was performed for 1800 < rpm < 5000, 0.2 < 4 < 1.2 and 130 deg before top dead center (BTDC) < SOI < 70 deg BTDC. Experimental measurements were used to verify the developed model, during which the engine performance could be determined to a reasonable accuracy of 10%. The equivalence ratio (4) was considered as a governing variable, through the new correlation for the time averaged heat transfer. A nonlinear regression approach was used to develop the new correlations. In the case of all the simulation data, the proposed correlations have a satisfactory performance with the determination coefficient (R2) of about 0.99. A relative error of 10% was found in more than 95% of the simulation data. However, the relative error was reduced to about 50% in the newly developed correlations, which increased its reliability to more than the Taylor’s correlation for representing the actual data. Due to the general form, hydrocarbon fuel is suitable for the newly developed correlations that are theoretically made.
format	Article
author	Khalaf I., Hamada M. M., Rahman A. Rashid, A. Aziz
author_facet	Khalaf I., Hamada M. M., Rahman A. Rashid, A. Aziz
author_sort	Khalaf I., Hamada
title	Time-averaged Heat Transfer Correlation for Direct Injection Hydrogen Fueled Engine
title_short	Time-averaged Heat Transfer Correlation for Direct Injection Hydrogen Fueled Engine
title_full	Time-averaged Heat Transfer Correlation for Direct Injection Hydrogen Fueled Engine
title_fullStr	Time-averaged Heat Transfer Correlation for Direct Injection Hydrogen Fueled Engine
title_full_unstemmed	Time-averaged Heat Transfer Correlation for Direct Injection Hydrogen Fueled Engine
title_sort	time-averaged heat transfer correlation for direct injection hydrogen fueled engine
publisher	Elsevier Ltd
publishDate	2012
url	http://umpir.ump.edu.my/id/eprint/6847/ http://umpir.ump.edu.my/id/eprint/6847/ http://umpir.ump.edu.my/id/eprint/6847/
first_indexed	2023-09-18T22:02:59Z
last_indexed	2023-09-18T22:02:59Z
_version_	1777414522495041536

Time-averaged Heat Transfer Correlation for Direct Injection Hydrogen Fueled Engine

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