The Computing Methods for CO<sub>2</sub> Emissions in Maritime Transports

COSOFRET, DORU; Bunea, Marian; Popa, Catalin C.

doi:10.1515/kbo-2016-0107

Cited by 5 publications

(3 citation statements)

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“…The CO 2 emission is found using the calculation procedure from the Technical Code for marine diesel engines ( Cosofret et al., 2016 ). The carbon balancing technique is used in this algorithm to estimate the mass flow rate of the exhaust gas ( IMO Resolution MEPC 177 (58), 2008 ).…”

Section: Methodology To Establish Eedi Bd Baselinesmentioning

confidence: 99%

“…When the carbon content of the utilized gasoline and the fuel consumption per hour is known, this approach may be employed. The stoichiometric oxidation Equation will be used to calculate the quantity of CO 2 ( Cosofret et al., 2016 ). CO 2 emissions from burning one kilogram of fuel are calculated as follows: C + O 2 → CO 2 + Qc where, C = Carbon mass in the fuel (kg C/kg combustion), O 2 = The Oxygen content in the supplied air (kg O 2 /kg air), Q c = Heat energy from the chemical reaction (mJ/kmol).…”

Section: Methodology To Establish Eedi Bd Baselinesmentioning

confidence: 99%

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Energy efficiency design index baselines for ships of Bangladesh based on verified ship data

Hasan

Karim

2022

Heliyon

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Section: Methodology To Establish Eedi Bd Baselinesmentioning

confidence: 99%

Section: Methodology To Establish Eedi Bd Baselinesmentioning

confidence: 99%

Energy efficiency design index baselines for ships of Bangladesh based on verified ship data

Hasan

Karim

2022

Heliyon

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“…In the process of making investment decisions, the NPV is a crucial factor as it helps to predict future cash flows [33]. When selecting the NPV, there are two probable scenarios: it could be positive, surpassing the capital cost of the project; or it could be negative, resulting in a loss.…”

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confidence: 99%

TERA of Gas Turbine Propulsion Systems for RORO Ships

et al. 2023

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Recently, regulations on emissions produced by vessels from international maritime organizations, along with the instability of fuel prices, have encouraged researchers to explore fuels and technology that are cleaner than heavy fuel oil and diesel engines. In this study, we employed the TERA method to evaluate the feasibility of using gas turbine engines with cleaner fuels as a replacement for diesel engines as a propulsion system for RORO ships. A sensitivity evaluation and risk assessment were also conducted to investigate the impact of applied emission taxes on the economic results. The findings indicated that the diesel engine emitted higher nitrogen oxide emissions than the gas turbine fuelled by natural gas and hydrogen. The gas turbine with hydrogen had zero carbon dioxide emissions, making it a sustainable energy production option. The economic aspects were evaluated based on an international route, and they revealed that economic profitability significantly depended on fuel costs and consumption. The diesel engine fuelled by marine diesel oil and the gas turbine fuelled by natural gas were economically attractive, whereas the gas turbine fuelled by hydrogen was less viable due to its high operating cost. However, in a scenario where a carbon dioxide tax was introduced, the gas turbine fuelled by hydrogen showed high potential as a low-risk investment compared to the other technologies. In summary, this study demonstrated the usefulness of the TERA method in the maritime sector for selecting and comparing various propulsion systems.

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Computational Analysis of Air Lubrication System for Commercial Shipping and Impacts on Fuel Consumption

Fotopoulos

Margaris

2020

Computation

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Our study presents the computational implementation of an air lubrication system on a commercial ship with 154,800 m3 Liquified Natural Gas capacity. The air lubrication reduces the skin friction between the ship’s wetted area and sea water. We analyze the real operating conditions as well as the assumptions, that will approach the problem as accurately as possible. The computational analysis is performed with the ANSYS FLUENT software. Two separate geometries (two different models) are drawn for a ship’s hull: with and without an air lubrication system. Our aim is to extract two different skin friction coefficients, which affect the fuel consumption and the CO2 emissions of the ship. A ship’s hull has never been designed before in real scale with air lubrication injectors adjusted in a computational environment, in order to simulate the function of air lubrication system. The system’s impact on the minimization of LNG transfer cost and on the reduction in fuel consumption and CO2 emissions is also examined. The study demonstrates the way to install the entire system in a new building. Fuel consumption can be reduced by up to 8%, and daily savings could reach up to EUR 8000 per travelling day.

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The Computing Methods for CO₂ Emissions in Maritime Transports

Cited by 5 publications

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Energy efficiency design index baselines for ships of Bangladesh based on verified ship data

Energy efficiency design index baselines for ships of Bangladesh based on verified ship data

TERA of Gas Turbine Propulsion Systems for RORO Ships

Computational Analysis of Air Lubrication System for Commercial Shipping and Impacts on Fuel Consumption

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The Computing Methods for CO2 Emissions in Maritime Transports

Cited by 5 publications

References 0 publications

Energy efficiency design index baselines for ships of Bangladesh based on verified ship data

Energy efficiency design index baselines for ships of Bangladesh based on verified ship data

TERA of Gas Turbine Propulsion Systems for RORO Ships

Computational Analysis of Air Lubrication System for Commercial Shipping and Impacts on Fuel Consumption

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The Computing Methods for CO₂ Emissions in Maritime Transports