Exhaust emissions reduction and fuel consumption from the LNG energy system depending on the ship operating modes

Martinić-Cezar, Siniša; Bratić, Karlo; Jurić, Zdeslav; Račić, Nikola

doi:10.31217/p.36.2.17

Cited by 4 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it is argued that LNG is not the best solution to meet the IMO NOx goals by 2050 as it causes methane slip (Agarwala, 2022). Also, the LNG vessels and their equipment have different power consumption requirements at sea for cargo operations (Martini c-Cezar et al, 2022). Furthermore, ports with gas stations are not available worldwide.…”

Section: Lngmentioning

confidence: 99%

Evaluation of constraints for investment in NOx emission technologies: case study on Greek bulk carrier owners

Karahalios

2024

MABR

View full text Add to dashboard Cite

PurposeThe maritime industry is the transport mode that contributes most to air pollution. The International Maritime Organization (IMO) identified the reduction of air pollution by ships as a crucial issue. Since 1 January 2020, ships have had to adopt strategies and new technologies to eliminate air pollution. However, ship compliance with nitrate oxide (NOx) emission restrictions is more challenging. This paper aims to identify ship owners' challenges in investing in new technologies.Design/methodology/approachThis paper applied a hybrid methodology combining a survey, a balanced scorecard and fuzzy analytic hierarchy process (F-AHP) to identify and evaluate constraints and weights in investment decision-making for NOx technologies. A survey was carried out to validate constraints.FindingsA survey was carried out, representing 5.1% of Greek-owned ships by deadweight capacity. The findings provide a weighted list of seven crucial technical and economic constraints faced by ship operators. The constraints vary from ship retrofit expenditure to crew training and waste management. Additionally, NOx emission technologies were compared. It was found that liquefied natural gas is the preferred investment option for the survey participants compared with selective catalytic reduction, exhaust gas recirculation and batteries.Originality/valueSeveral studies have dealt with the individual technical feasibility of NOx reduction technologies. However, apart from technical feasibility for a shipowner, the selection of a NOx technology has several managerial and safety risks. Therefore, the originality of this paper is to reveal those constraints that have a higher weight on ship owners. With this cost-benefit approach, investment challenges for ship operators are revealed. Policymakers can benefit from the results of the employed methodology.

show abstract

Section: Lngmentioning

confidence: 99%

Evaluation of constraints for investment in NOx emission technologies: case study on Greek bulk carrier owners

Karahalios

2024

MABR

View full text Add to dashboard Cite

show abstract

“…An earlier research paper [1] provides a comprehensive analysis of the impact of ship operating modes on reducing exhaust emissions and fuel consumption in LNG energy systems. The study examines the dynamic relationship between power demand, specific fuel consumption and CO2 and NOx emissions in different operating scenarios that occur in LNG ships and aims to determine the optimal engine configuration for different operating modes based on data from the simulator and test bench, considering safety and port requirements.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Fuel Consumption by Controlling the Load Distribution between Engines in an LNG Ship Electric Propulsion Plant

Martinić-Cezar,

Jurić,

Assani

et al. 2024

Preprint

View full text Add to dashboard Cite

Due to growing environmental concerns and stringent emissions regulations, optimizing the fuel consumption of marine propulsion systems is crucial. This work deals with the potential in an LNG ship propulsion system to reduce fuel consumption through controlled load distribution between engines in Dual Fuel Diesel Electric (DFDE) plant. Based on cyclical data acquisitioning measured on board and using an optimization model, the study evaluates different load distribution strategies between set up according to the optimization model results and automatic (equal) operation to determine their effectiveness in improving fuel efficiency. The analysis includes scenarios with different fuel types, including LNG, MDO and HFO, at different engine loads. The results indicate that load distribution adjustment based on the optimization model results significantly improves fuel efficiency compared to conventional methods of uniform load distribution controlled by power management systems almost in all load intervals. This research contributes to the maritime industry by demonstrating that strategic load management can achieve significant fuel savings and reduce environmental impact, which is in line with global sustainability goals. This work not only provides a framework for the implementation of more efficient energy management systems on LNG vessels, but also sets a benchmark for future innovations in maritime energy optimization as well as in the view of exhaust emission reduction.

show abstract

Optimization of Fuel Consumption by Controlling the Load Distribution between Engines in an LNG Ship Electric Propulsion Plant

Martinić-Cezar,

Jurić,

Assani

et al. 2024

Energies

View full text Add to dashboard Cite

Due to growing environmental concerns and stringent emissions regulations, optimizing the fuel consumption of marine propulsion systems is crucial. This work deals with the potential in an LNG ship propulsion system to reduce fuel consumption through controlled load distribution between engines in Dual-Fuel Diesel Electric (DFDE) plant. Based on cyclical data acquisition measured onboard and using an optimization model, this study evaluates different load distribution strategies between setups according to the optimization model results and automatic (equal) operation to determine their effectiveness in improving fuel efficiency. The analysis includes scenarios with different fuel types, including LNG, MDO and HFO, at different engine loads. The results indicate that load distribution adjustment based on the optimization model results significantly improves fuel efficiency compared to conventional methods of uniform load distribution controlled by power management systems in almost all load intervals. This research contributes to the maritime industry by demonstrating that strategic load management can achieve significant fuel savings and reduce environmental impact, which is in line with global sustainability goals. This work not only provides a framework for the implementation of more efficient energy management systems on LNG vessels, but also sets a benchmark for future innovations in maritime energy optimization as well as in the view of exhaust emission reduction.

show abstract

Exhaust emissions reduction and fuel consumption from the LNG energy system depending on the ship operating modes

Cited by 4 publications

References 8 publications

Evaluation of constraints for investment in NOx emission technologies: case study on Greek bulk carrier owners

Evaluation of constraints for investment in NOx emission technologies: case study on Greek bulk carrier owners

Optimization of Fuel Consumption by Controlling the Load Distribution between Engines in an LNG Ship Electric Propulsion Plant

Optimization of Fuel Consumption by Controlling the Load Distribution between Engines in an LNG Ship Electric Propulsion Plant

Contact Info

Product

Resources

About