O futuro da turbina a gás na Marinha do Brasil

Abstract

This work is dedicated to the theoretical analysis and bibliographic review of naval propulsion systems, with special emphasis on gas and diesel engines. Initially, it provides a solid theoretical foundation in thermal systems and thermodynamics, equipping the study with the necessary fundamentals for subsequent evaluation. The study delves into a comprehensive literature investigation, covering the characteristics and efficiency of these crucial technologies in naval propulsion. The comparative analysis focuses on three key aspects: energy efficiency and operational cost. By evaluating these parameters, this study aims not only to inform about the effectiveness of propulsion systems in technical terms, but also to highlight crucial economic and environmental considerations in decision-making regarding the naval fleet. The practical part of this study is conducted through a detailed case study involving the turbines from the Niterói Class Frigates, Barroso and Inhaúma Class Corvettes compared with the diesel engines of the new Tamandaré Class Frigates, which are similar to engines of the Amazonas Class Oceanic Patrol Vessels of the Brazilian Navy. This approach offers a practical and valuable insight into the real-world operations of these vessels, complementing and enriching the understanding derived from the literature review. In this way, it was possible to verify that the Diesel engines under study present a lower consumption at all speeds, but when the demand is close to 30 knots, it becomes feasible to meet it just using the turbines