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Renewables—The Future’s (only) Hope!
Published in Anco S. Blazev, Energy Security for The 21st Century, 2021
The main economic advantage compared with conventional electric boats is the fact that no time has to be spent charging the batteries. For conventional electric boats, 6–8 hrs. of charging gives just 4–6 hrs. of use. The hydrogen-powered electric boat requires only the time that it takes to change the cartridge—5 minutes maximum.
Renewable Energy Based Smart Microgrids—A Pathway to Green Port Development
Published in Stephen A. Roosa, International Solutions to Sustainable Energy, Policies and Applications, 2020
Atulya Misra, Gayathri Venkataramani, Senthilkumar Gowrishankar, Elayaperumal Ayyasam, Velraj Ramalingam
Demonstrating the use of electric mobility in ports and port owned areas is increasingly important. Electric boats are more efficient than boats with diesel engines. An ideal 100% clean energy port is achievable if all boats, vehicles and machinery operating in the port used electrical power.
Propulsion and photovoltaic charging system parameter computation for an all-electric boat
Published in Ships and Offshore Structures, 2023
Onur Yüksel, Burak Göksu, Murat Bayraktar
Electric propulsion systems for marine vessels can provide lower air; noise and water pollution compared to internal combustion engines (Villacreses et al. 2017). Although the initial capital expenditures of electric propulsion may be higher, the system can assure significant savings over time due to lower operational and maintenance costs (Sreedevi et al., 2022). Despite electric motors procuring smoother acceleration and torque delivery, the sudden increase in the torque requirement will also increase the current drawn from the batteries, and the usage time of batteries and the range of the vessel will decrease (Duad et al., 2015). In cases where there is a constantly high torque requirement, the battery life may be adversely affected eventually, as the batteries charge and discharge more frequently (Yuksel & Koseoglu, 2023). To increase the propulsion efficiency of the electric boat, selecting the optimum hull and propeller design can improve the range of the boat and battery lifetimes. For instance, typically, the propeller with the lowest Expanded Area Ratios (EAR), as well as the lowest thrust and torque coefficients, produces the highest slipstream velocity, enhances flow behaviour, and suggests applicability for optimisation for electric motors, which can instantly produce the maximum torque (Lovibond et al. 2023).
Electric ferry ecosystem for sustainable inter-island transport in the Philippines: a prospective simulation for Davao City – Samal Island Route
Published in International Journal of Sustainable Energy, 2019
Eleonor V. Palconit, Michael Lochinvar S. Abundo
With all the parameter needed in the implementation of the electric boat, this study aims to develop a simulation table, wherein, all the boat particulars or specification will be filled into the designated textbox and automatically it gives the necessary value needed to convert the conventional diesel engine boat to electric boat. In which estimated power engine of the electric boat is derived, the battery pack to be installed is identified and the photovoltaic module wattage for charging while on voyage is figured out as shown in Table 1. This prospective simulation will serve as a guide in converting diesel into the electric-powered boat, specifically, it helps, the aim of converting a diesel engine into 100% electric propulsion for electric ferry ecosystem for Davao-Samal Island route Philippines.