Análise técnica-econômica do uso do GNL em embarcações do tipo ferryboat que operam no Rio Solimões

Abstract

The use of Liquefied Natural Gas (LNG) as a fuel for vessels is a reality on the global stage, representing a sustainable alternative that enables the reduction of emissions of pollutants into the environment. Thus, this study examines two options for installing LNG tanks on a passenger and cargo ferry that navigates the Solimões River between the cities of Manaus and Tabatinga. The sizing of LNG tanks for this ferry is based on the diesel consumption of the installed engine and the mixture ratios to enable the replacement of diesel with LNG. As a result, the most viable option was for the vessel to make the upstream journey using only LNG and the return journey using diesel as fuel. This choice not only proved to be economically viable, with a 4.03% increase in profit per trip, but also prevents the shipowner from losing cargo space and reducing the vessel's freight. This outcome is relevant to the study, as it would allow for a reduction in freight and passage costs for riverside communities. Additionally, due to the new configuration of the tank arrangements, a study of intact stability was conducted to ensure safe navigation. The stability results under each loading condition met all criteria established by NORMAM 202.