<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <title>UTas ePrints - Real time model for oxides of nitrogen emissions from a slow speed marine diesel</title> <script type="text/javascript" src="http://eprints.utas.edu.au/javascript/auto.js"><!-- padder --></script> <style type="text/css" media="screen">@import url(http://eprints.utas.edu.au/style/auto.css);</style> <style type="text/css" media="print">@import url(http://eprints.utas.edu.au/style/print.css);</style> <link rel="icon" href="/images/eprints/favicon.ico" type="image/x-icon" /> <link rel="shortcut icon" href="/images/eprints/favicon.ico" type="image/x-icon" /> <link rel="Top" href="http://eprints.utas.edu.au/" /> <link rel="Search" href="http://eprints.utas.edu.au/cgi/search" /> <meta content="Goldsworthy, L" name="eprints.creators_name" /> <meta content="L.Goldsworthy@utas.edu.au" name="eprints.creators_id" /> <meta content="article" name="eprints.type" /> <meta content="2007-12-12 21:12:10" name="eprints.datestamp" /> <meta content="2008-01-08 15:30:00" name="eprints.lastmod" /> <meta content="show" name="eprints.metadata_visibility" /> <meta content="Real time model for oxides of nitrogen emissions from a slow speed marine diesel" name="eprints.title" /> <meta content="pub" name="eprints.ispublished" /> <meta content="290000" name="eprints.subjects" /> <meta content="291200" name="eprints.subjects" /> <meta content="public" name="eprints.full_text_status" /> <meta content="A thermodynamic model is presented for predicting oxides of nitrogen (NOx) emissions from slow speed marine diesel engines. The model is zero-dimensional, uses chemical kinetics for NOx formation in multiple burnt gas zones, and runs in real time on a standard PC. The mean fuel/air mixture strength at which NOx forms and the rate of dilution of the burnt gas by unburnt air, are adjustable. Two MAN B&W IMO NOx-compliant slow speed diesels are modelled. Effects such as variations in fuel spray interaction with load are accounted for in the calibration of the model. The effect of dilution rate and equivalence ratio on NOx formation is studied. It is shown that, under certain conditions, there is a critical burnt gas dilution rate which maximises NOx. The model responds adequately to changes in engine load and to NOx control measures such as water injection, injection timing retard, exhaust gas recirculation and humidification." name="eprints.abstract" /> <meta content="2003" name="eprints.date" /> <meta content="published" name="eprints.date_type" /> <meta content="Journal of Marine Engineering and Technology" name="eprints.publication" /> <meta content="A2" name="eprints.volume" /> <meta content="3-12" name="eprints.pagerange" /> <meta content="TRUE" name="eprints.refereed" /> <meta content="1476-1548" name="eprints.issn" /> <meta content="http://www.imarest.org/proceedings/detail.asp?ID=12" name="eprints.official_url" /> <meta content="1. Corbett, JJ, and Fischbeck, P. Emissions from Ships. Science. Vol 298: pp 823-824 (1997). 2. IMO, Protocol of 1997 to amend Marpol 73/78, Annex VI of Marpol 73/78 Regulations for the Prevention of Air Pollution from Ships and NOx Technical Code. (1998). 3. Goldsworthy, L, Jung Byung-Gun, Niekamp, P, and Earl, S. Development of the Australian Maritime College PC Based Machinery Space Simulator. MARTECH 2002 Conference Proceedings, Singapore (2002). 4. Dec, JE, and Canaan, RE. PLIF Imaging of NO Formation in a DI Diesel Engine. SAE 980147 (1998). 5. Zabetta, EC, and Kilpinen, P. Improved NOx Submodel for In-Cylinder CFD Simulation of Low- and Medium- Speed Compression Ignition Engines. Energy and Fuels. Vol 15(6): pp 1425-1433 (2001). 6. Paro, D. Development of the Sustainable Engine. 23rd CIMAC Congress (2001). 7. Tree, DR, and Cooley, WB. A Comparison and Model of NOx Formation for Diesel Fuel and Diethyl Ether. SAE 2001-01- 0654 (2001). 8. Ahmad T, and Plee, L.Application of Flame Temperature Correlations to Emissions from a Direct-Injection Diesel Engine. SAE 831734 (1983). 9. Dodge, LG, Leone, DM, Naegeli, DW, Dickey, DW, and Swenson, KR. A PC Based Model for Predicting NOx Reductions in Diesel Engines. SAE 962060 (1996). 10. Goldsworthy LC. Simulating Primary Control Measures for Oxides of Nitrogen Emissions in a Slow Speed Marine Diesel Engine. Sea Australia 2000 Conference Proceedings, Sydney (2000). 11. Easley, WE, Mellor, AM, and Plee, SL. NO Formation and Decomposition Models for DI Diesel Engines. SAE. Vol 582 (2001). 12. Lavoie, GA, Heywood, JB, and Keck, JC. Experimental and Theoretical Study of Nitric Oxide Formation in Internal Combustion Engines. Combustion Science and Technology. Vol 1: pp 313-326 (1970). 13. Heider, G, Woschni, G, and Zeilinger, K. Two-Zone Calculation Model for the Prediction of NO Emissions from Diesel Engines. MTZ. Vol 59(11): pp 770-775 (1998). 14. Weisser, G. Modelling of Combustion and Nitric Oxide Formation for Medium-Speed DI Diesel Engines: A Comparison of Zeroand Three-Dimensional Approaches, Swiss Federal Institute of Technology: Zurich (2001). 15. Strehlow, RA. Combustion Fundamentals. McGraw-Hill (1984). 16. Rodatz, P, Weisser, G, and Tanner, FX. Assessment of CFD Methods for Large Diesel engines with a Common Rail Injection System. SAE 2000-01-0948 (2000). 17. Goldsworthy, L. Reduced Kinetics Schemes for Calculation of Oxides of Nitrogen Emissions from a Slow Speed Marine Diesel. Energy and Fuels (American Chemical Society). submitted (2002). 18. Zabetta, EC, Kilpinen, P, Hupa, M, Stahl, K, Leppalahati, J, and Nieminen, J. Kinetic Modelling Study on the Potential of Staged Combustion in Gas Turbines for the Reduction of Nitrogen Oxide Emissions from Biomass IGCC Plants. Energy and Fuels. Vol 14: pp 751-761 (2000). 19. Miller, JA, and Bowman, CT. Mechanism and Modelling of Nitrogen Chemistry in Combustion. Prog. Energy Combust. Sci. Vol 15: pp 287-338 (1989). 20. Easley,WE, Mellor, AM, and Plee, SL. NO Formation and Decomposition Models for DI Diesel Engines. SAE 2000-01-0582 (2000). 21. Holtbecker, R, and Geist, M. Emissions Technology, Sulzer RTA Series, Exhaust Emissions Reduction Technology for Sulzer Marine Diesel Engines, Wartsila NSD (1998). 22. Bazari, Z. A DI Diesel Combustion and Emission Predictive Capability for Use in Cycle Simulation. SAE 920462 (1992). 23.MAN B&W, Super-VIT Fuel Pumps: Adjustment and Maintenance, (1987). 24. Tanner, FX, Brunner, M, and Weisser, G. A Computational Investigation of Water Injection Strategies for Nitric Oxide reduction in Large-Bore DI Diesel Engines. SAE 2001-01-1069 (2001). 25. Borman, GL, and Ragland, KW. Combustion Engineering. WCB/McGraw-Hill (1998). 26. Henningsen, S. MAN B&W, Pers Comm, MAN B&W (2002)." name="eprints.referencetext" /> <meta content="Goldsworthy, L (2003) Real time model for oxides of nitrogen emissions from a slow speed marine diesel. Journal of Marine Engineering and Technology, A2 . pp. 3-12. ISSN 1476-1548" name="eprints.citation" /> <meta content="http://eprints.utas.edu.au/2578/1/47113_JMET_2003.pdf" name="eprints.document_url" /> <link rel="schema.DC" href="http://purl.org/DC/elements/1.0/" /> <meta content="Real time model for oxides of nitrogen emissions from a slow speed marine diesel" name="DC.title" /> <meta content="Goldsworthy, L" name="DC.creator" /> <meta content="290000 Engineering and Technology" name="DC.subject" /> <meta content="291200 Maritime Engineering" name="DC.subject" /> <meta content="A thermodynamic model is presented for predicting oxides of nitrogen (NOx) emissions from slow speed marine diesel engines. The model is zero-dimensional, uses chemical kinetics for NOx formation in multiple burnt gas zones, and runs in real time on a standard PC. The mean fuel/air mixture strength at which NOx forms and the rate of dilution of the burnt gas by unburnt air, are adjustable. Two MAN B&W IMO NOx-compliant slow speed diesels are modelled. Effects such as variations in fuel spray interaction with load are accounted for in the calibration of the model. The effect of dilution rate and equivalence ratio on NOx formation is studied. It is shown that, under certain conditions, there is a critical burnt gas dilution rate which maximises NOx. The model responds adequately to changes in engine load and to NOx control measures such as water injection, injection timing retard, exhaust gas recirculation and humidification." name="DC.description" /> <meta content="2003" name="DC.date" /> <meta content="Article" name="DC.type" /> <meta content="PeerReviewed" name="DC.type" /> <meta content="application/pdf" name="DC.format" /> <meta content="http://eprints.utas.edu.au/2578/1/47113_JMET_2003.pdf" name="DC.identifier" /> <meta content="http://www.imarest.org/proceedings/detail.asp?ID=12" name="DC.relation" /> <meta content="Goldsworthy, L (2003) Real time model for oxides of nitrogen emissions from a slow speed marine diesel. 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style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Goldsworthy, L</span> (2003) <xhtml:em>Real time model for oxides of nitrogen emissions from a slow speed marine diesel.</xhtml:em> Journal of Marine Engineering and Technology, A2 . pp. 3-12. ISSN 1476-1548</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a onmouseover="EPJS_ShowPreview( event, 'doc_preview_3386' );" href="http://eprints.utas.edu.au/2578/1/47113_JMET_2003.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_3386' );"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a><div class="ep_preview" id="doc_preview_3386"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/2578/thumbnails/1/preview.png" class="ep_preview_image" border="0" /><div class="ep_preview_title">Preview</div></td></tr></table></div></td><td valign="top"><a href="http://eprints.utas.edu.au/2578/1/47113_JMET_2003.pdf"><span class="ep_document_citation">PDF</span></a> - Requires a PDF viewer<br />411Kb</td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://www.imarest.org/proceedings/detail.asp?ID=12">http://www.imarest.org/proceedings/detail.asp?ID=12</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">A thermodynamic model is presented for predicting oxides of nitrogen (NOx) emissions from slow speed marine diesel engines. The model is zero-dimensional, uses chemical kinetics for NOx formation in multiple burnt gas zones, and runs in real time on a standard PC. The mean fuel/air mixture strength at which NOx forms and the rate of dilution of the burnt gas by unburnt air, are adjustable. Two MAN B&W IMO NOx-compliant slow speed diesels are modelled. Effects such as variations in fuel spray interaction with load are accounted for in the calibration of the model. The effect of dilution rate and equivalence ratio on NOx formation is studied. It is shown that, under certain conditions, there is a critical burnt gas dilution rate which maximises NOx. The model responds adequately to changes in engine load and to NOx control measures such as water injection, injection timing retard, exhaust gas recirculation and humidification.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/290000.html">290000 Engineering and Technology</a><br /><a href="http://eprints.utas.edu.au/view/subjects/291200.html">290000 Engineering and Technology > 291200 Maritime Engineering</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2578</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Scholarly Publications Librarian</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">13 Dec 2007 08:12</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2578;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2578">item control page</a></p> </td></tr></table> </div> <!-- InstanceEndEditable --></td> </tr> <tr> <td><!-- #BeginLibraryItem "/Library/footer_eprints.lbi" --> <table width="795" border="0" align="left" cellpadding="0" class="footer"> <tr valign="top"> <td colspan="2"><div align="center"><a href="http://www.utas.edu.au">UTAS home</a> | <a href="http://www.utas.edu.au/library/">Library home</a> | <a href="/">ePrints home</a> | <a href="/contact.html">contact</a> | <a href="/information.html">about</a> | <a href="/view/">browse</a> | <a href="/perl/search/simple">search</a> | <a href="/perl/register">register</a> | <a href="/perl/users/home">user area</a> | <a href="/help/">help</a></div><br /></td> </tr> <tr><td colspan="2"><p><img src="/images/eprints/footerline.gif" width="100%" height="4" /></p></td></tr> <tr valign="top"> <td width="68%" class="footer">Authorised by the University Librarian<br /> © University of Tasmania ABN 30 764 374 782<br /> <a href="http://www.utas.edu.au/cricos/">CRICOS Provider Code 00586B</a> | <a href="http://www.utas.edu.au/copyright/copyright_disclaimers.html">Copyright & Disclaimers</a> | <a href="http://www.utas.edu.au/accessibility/index.html">Accessibility</a> | <a href="http://eprints.utas.edu.au/feedback/">Site Feedback</a> </td> <td width="32%"><div align="right"> <p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><img src="http://www.utas.edu.au/shared/logos/unioftasstrip.gif" alt="University of Tasmania Home Page" width="260" height="16" border="0" align="right" /></a></p> <p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><br /> </a></p> </div></td> </tr> <tr valign="top"> <td><p> </p></td> <td><div align="right"><span class="NoPrint"><a href="http://www.eprints.org/software/"><img src="/images/eprintslogo.gif" alt="ePrints logo" width="77" height="29" border="0" align="bottom" /></a></span></div></td> </tr> </table> <!-- #EndLibraryItem --> <div align="center"></div></td> </tr> </table> </body> </html>