Global emissions of Green House Gases and air pollutants are significantly influenced by shipping. Diesel fuel use for energy production is primarily responsible for these emissions. The substitution of traditional marine diesel oil with methanol as a marine fuel is recommended in this study. Moreover, the methanol-diesel dual-fuel engine's environmental and financial benefits are investigated numerically. A cruise passenger ship named Costa Toscana has been evaluated as a case study. Based on the data, the suggested dual-fuel engine reduces emissions of CO2, NOx, SOx, and PM by 25.7%, 38.46%, 45%, and 45%, respectively, with a cost-effectiveness of 286.5, 6645, 268403.4, and 358759.8 US$/ton, respectively. According to the findings, converting an engine to run on two fuels will comply with all current and upcoming IMO standards regulating emissions of air pollutants. In addition, the cruise ship's recommended dual-fuel engine will save 17.57 million USD/year in fuel costs.
Sallam, Samar K.; Elgohary, Mohamed M.; and Seddiek, Ibrahim S.
"Methanol as an Eco-Environmental Alternative Fuel for Ships: A Case Study,"
Journal of Marine Science and Technology: Vol. 31:
3, Article 2.
Available at: https://jmstt.ntou.edu.tw/journal/vol31/iss3/2