Lookup NU author(s): Dr David Trodden,
Dr Maryam Haroutunian
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
Oxides of Nitrogen (NOX) are harmful to human health, as such their emissions are monitored and controls arebecoming increasingly stringent.NOX formation is dependent on engine running conditions and therefore on ship operation; there will be differencesin the amount of NOX produced when a ship is travelling in a straight line, compared to when manoeuvring.Ships tend to spend more time in manoeuvring conditions around population dense areas such as inland waterways,compared to when on the deep sea. It is therefore important to investigate the difference that manoeuvring motion hason NOX production, compared to steady-state running.Emission factors, which are often given as a function of fuel oil consumption and based upon steady-state conditions,are frequently used to estimate engine emissions. In this paper, an emission factor is developed using a numericalengine model coupled with chemical kinetics computations. The same model, coupled to a ship manoeuvringsimulator is then used to compare NOX formation during manoeuvring operations.It is demonstrated that during manoeuvres, the developed simulator exhibits significant differences in NOX formation,compared to the commonly used emission factor approaches.
Author(s): Trodden DG, Haroutunian M
Publication type: Article
Publication status: Published
Journal: Ocean Engineering
Print publication date: 15/02/2018
Online publication date: 05/01/2018
Acceptance date: 18/12/2017
ISSN (print): 0029-8018
ISSN (electronic): 1873-5258
Publisher: Pergamon Press
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