title: Compliance of Royal Naval ships with nitrogen oxide emissions legislation.
abstract: Nitrogen oxide (NOx) emissions from marine diesel engines pose a hazard to human health and the environment. From 2021, demanding emissions limits are expected to be applied to sea areas that the Royal Navy (RN) accesses. We analyze how these future constraints affect the choice of NOx abatement systems for RN ships, which are subject to more design constraints than civilian ships. A weighted matrix approach is used to facilitate a quantitative assessment. For most warships to be built soon after 2021 Lean Nitrogen Traps (LNT) in conjunction with Exhaust Gas Recirculation (EGR) represents a relatively achievable option with fewer drawbacks than other system types. Urea-selective catalytic reduction is likely to be most appropriate for ships that are built to civilian standards. The future technologies that are at an early stage of development are discussed.
authors.affiliation: Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK. Electronic address: david.blatcher887@mod.uk.
authors.forename: D J
authors.initials: DJ
authors.lastname: Blatcher
authors.forename: I
authors.initials: I
authors.lastname: Eames
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000331:legislation & jurisprudence* / Q000706:statistics & numerical data; D003187:Compliance; D058735:Environmental Policy; D008889:Military Personnel; D009589:Nitrogen Oxides / Q000032:analysis*; D009792:Oceans and Seas; D012767:Ships / Q000331:legislation & jurisprudence* / Q000706:statistics & numerical data; D001335:Vehicle Emissions / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D009589:Nitrogen Oxides; D001335:Vehicle Emissions
keywords: Diesel; Emission; Legislation; NO(x); Naval; Ship