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Energies 2019, 12(2), 228; https://doi.org/10.3390/en12020228

Comparison of NOx and Smoke Characteristics of Water-in-Oil Emulsion and Marine Diesel Oil in 400-kW Marine Generator Engine

1
Division of Marine Engineering, Mokpo National Maritime University, Mokpo 58628, Korea
2
Department of Mechanical and Shipbuilding Convergence Engineering, Pukyong National University, Busan 48547, Korea
*
Author to whom correspondence should be addressed.
Received: 13 December 2018 / Revised: 7 January 2019 / Accepted: 10 January 2019 / Published: 12 January 2019
(This article belongs to the Section Energy and Environment)
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Abstract

Currently, the exhaust gas of a ship is regulated for nitrogen oxides and sulphur compounds; however, there is no IMO regulation on smoke under discussion. This study investigated the reduction of exhaust gas through ship emulsion fuel, which can simultaneously reduce nitrogen oxides and smoke in ship engines before smoke regulations are established. The combustion and exhaust characteristics were investigated according to the moisture content of emulsion fuel using a 400-kW generator engine. As the water content of the emulsion and the temperature of the combustion chamber increase, micro explosion increases and the combustion period decreases. The nitrogen oxide and smoke from the emulsion fuel used in this study decreased by 7% and 75%, respectively. The nitrogen oxides and soot reductions obtained by the use of emulsion fuel were boosted by micro-explosion of water contained in the fuel during combustion. View Full-Text
Keywords: micro explosion phenomena; marine diesel engine; emulsified oil; water-in-oil; MDO micro explosion phenomena; marine diesel engine; emulsified oil; water-in-oil; MDO
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Oh, J.; Im, M.; Oh, S.; Lee, C. Comparison of NOx and Smoke Characteristics of Water-in-Oil Emulsion and Marine Diesel Oil in 400-kW Marine Generator Engine. Energies 2019, 12, 228.

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