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    A Decision-Making Tool Based Analysis of Onboard Electricity Storage
    (Atlantis Press, 2021) Sulukan, Egemen; Sar, Alperen; Ozkan, Dogus; Uyar, Tanay Sidki
    Energy has been used in maritime transportation, while fossil fuels began to be used more extensively since the industrial revolution to carry more products and obtain higher propulsion power. However; climate change appeared as one of the striking problem areas around the globe, where the scale and speed of rising concerns about climate change are unfortunately increasing. Greenhouse gas emissions are one of the most significant issues about climate change, including the maritime sector and alternative energy resources like renewables and respective hybrid power systems that are considered to be used in maritime transportation. However there is a big challenge about energy storage in terms of the technology penetration and respective costs. In this paper, the current energy storage technologies on a chemical tanker ship have been analyzed in the Reference Energy System perspective and an alternative scenario has been developed. Rectifiers and batteries are the available energy storage systems which are used in case of blackout and emergencies. Low voltage direct current fed systems are GMDSS, emergency lighting, bridge navigational instruments, etc. Batteries are kept charged by rectifiers to be used in case of emergency or need for temporary power. Current energy storage technologies of a chemical tanker ship were fulfilled via Long-Range Energy Alternatives Planning system and the current situation has been specified by the statistical data, to obtain the base scenario. As an alternative scenario, the required secure and cost-effective level of electricity storage in battery groups has been analyzed, according to IMO regulations and respective technology improvements. The results show that, energy storage is a viable solution to back up the vital navigation systems onboard and alternative resources can supply the electricity for storage purposes to encompass a more secure future, in a cleaner atmosphere.
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    Environmental impact assessment of hydrogen-based auxiliary power system onboard
    (Pergamon-Elsevier Science Ltd, 2021) Sari, Alperen; Sulukan, Egemen; Ozkan, Dogus; Uyar, Tanay Sidki
    The maritime transportation sector globally depends on fossil resources while this option is both diminishing and causing serious environmental and air pollution issues. Recently, hydrogen energy becomes one of the key alternatives addressing these concerns under the increasing press effect of the international community. The use of hydrogen as an energy source in ships is provided by fuel cell technologies. Although there are many types of fuel cells, Proton Exchange Membrane Fuel Cell (PEMFC) is the most widely used fuel cell type in themaritime industry. Themost important handicap for the use of hydrogen in ships seems to be the production and storage of it. For this reason, fuel cell technology and hydrogen production and storage systems must be developed in order to use hydrogenas themain propulsionsystem inlong-distance transportation in themaritime sector. In this study, Reference Energy System (RES) is established for a chemical tanker ship to determine the current energy flow from various resources to demands. Then the appropriate parameters are assigned and this framework is specified by the respective data. Following this phase; the current situation has been developed as the base scenario and analyzed by using the Low Emission Analysis Programme (LEAP) energy modeling platform. Additionally, two alternative scenarios including the hydrogen-based have been applied against the base scenario to compare the environmental results in the 2017-2050 time period. When the results are evaluated, it is predicted that although it is not sufficient for IMO and EMSA targets, implementation of hydrogen contributes to the carbon emission reduction positively and it will be more beneficial to apply to the main drive system with the technological developments to be made in the near future. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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    An on-board energy and environmental analysis within the COVID-19 effects
    (Inderscience Enterprises Ltd, 2023) Sari, Alperen; Sulukan, Egemen; Ozkan, Dogus; Uyar, Tanay Sidki
    The marine transportation industry, which has made significant steps in recent years to combat climate change and global warming, is heavily influenced by regional and worldwide economic trends. The COVID-19 pandemic, which began in China at the end of 2019 and spread to the rest of the world in the first quarter of 2020, caused the global economy and marine transport to decline by 4.1% in 2020. It is proposed in this study to investigate various scenarios by modelling this circumstance that has unexpectedly occurred using decision assistance technologies.
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    An urban techno-economic analysis and modelling for Turkey
    (Elsevier, 2021) Beikci, Dogancan; Sulukan, Egemen; Uyar, Tanay Sidki
    The energy profile of a city, with all of the relevant details about production and consumption phases, is a significant part of its sustainability rating. Therefore, municipalities have initiated the development of Sustainable Energy Action Plans as a key document to introduce the respective course of actions in order to define the technology adaptation process, identify the principal sources of CO2 emissions and their respective reduction potentials for the designated target years. A complete energy-strategy plan is required to handle the financial, technical, and environmental dimensions, not just for the country, but also for cities. As a powerful energy model generator among the energy planning and optimization tools, TIMES utilizes the energy, economy, and environmental parameters simultaneously. This paper aims to oversee and indicate the possible implications of 2023 energy targets of Turkey in a city-level energy modeling. In this perspective, the city of Burdur is selected as the target to implement the designated solar energy policy targets. With this paper, nationwide official targets are evaluated for a city level by calculating long-term effects and costs to the system. A total of 5000 MW of solar energy utilization target of Turkey has been reduced to the urban level for Burdur, depending on its share of solar energy, and then applied as an alternative scenario on the energy model developed for this analysis. The results show that the solar share of the total installed capacity of Burdur city will reach 49% while tripling the solarbased electricity generation in its energy mix.