Comparative Analysis and Estimation of Amounts of Exhaust Gas Waste Heat From the Tier III-Compliant Dual-Fuel Low-Speed Marine Main Engines

Existing and future IMO restrictions on emission of harmful substances contained in exhaust gas have introduced an obligation to implement technical solutions to reduce NOₓ, SOₓ and CO₂ emissions. Reduction in NOₓ and SOₓ emissions has been achieved by systems (i.e. SCR and EGR) ensuring Tier III-compliant exhaust gas composition. SCR and EGR systems have also affected the amount of exhaust gas waste heat. Therefore reduction in CO₂ emissions has mostly been dependent on available amount of exhaust gas waste heat to produce electricity using waste heat recovery generator unit instead of medium-speed diesel generating set. Comparative analysis of amounts of exhaust gas waste heat in LNG and MGO modes under ISO ambient conditions has been carried out with particular emphasis on the impact of different variants of SCR and EGR systems. Formulae to estimate the amounts of exhaust gas waste heat have been determined using least squares method.

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  • English

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  • Accession Number: 01832185
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 30 2021 1:03PM