A new scheme for large marine vessels LNG cold energy utilization from thermodynamic and thermoeconomic viewpoints

Ouyang, Tiancheng; Tan, Jiaqi; Xie, Shutao; Wu, Wencong; Su, Zixiang

doi:10.1016/j.enconman.2020.113770

Cited by 25 publications

(4 citation statements)

References 19 publications

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“…After defining power (10 kW) and equivalent hours (5), the relevance of the four parameters used in HELM has to be set. As this ship needs to operate always in urban areas, a high relevance must be considered for emissions, which has been set to 5.…”

Section: Figmentioning

confidence: 99%

“…Recent studies demonstrated that the introduction of alternative fuels and the diffusion of new technologies is mandatory to reach the long-term targets set by IMO. Although the introduction of LNG to replace HFO in ICEs will help to reduce CO2 emissions [5][6], it is not sufficient: thus, the use of more sustainable solutions must be considered as well. The potential of many possible fuels, such as ammonia and methanol, has been investigated in [7][8] [9].…”

Section: Introductionmentioning

confidence: 99%

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An algorithm for comparative analysis of power and storage systems for maritime applications

2022

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This paper presents an innovative algorithm to compare traditional and innovative energy systems onboard for maritime applications. The solutions are compared adopting a multi-criteria method, considering four parameters (weight, volume, cost, emissions) and their relevance according to the kind of ship and navigation route. The algorithm, which includes a large and updated database of market solutions, leads to the implementation of HELM (Helper for Energy Layouts in Maritime applications) tool. HELM was conceived to support the design of maritime systems: it chooses the best technology comparing traditional marine diesel engines, propulsion systems with alternative fuels (methanol, ammonia, LNG) and innovative low-emission technologies (fuel cell and batteries). Two case studies are investigated: (i) a small passenger ship for short routes (ii) and a large size ro-ro cargo ship. For case (i), fuel cells represent a competitive solution, in particular considering navigation in emission control areas. For case study (ii) Internal Combustion Engines shows are the best solution. The evaluation of alternative fuels is performed, considering a sensitivity analysis on emissions’ importance: methanol, LNG, and ammonia are promising solutions. For case (i), the installation of electrical batteries is also evaluated to analyse potential advantages to reduce the amount of H2 stored onboard.

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Section: Figmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An algorithm for comparative analysis of power and storage systems for maritime applications

2022

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“…Regarding fuels, many alternatives are possible to replace Heavy Fuel Oil (HFO) and Marine Diesel Oil (MDO), which are the most employed today and have high CO2 emissions (about 3.1 kgCO2/kg fuel). Natural gas is an alternative [12], however larger volumes are required for storage on-board and it only allows for a limited reduction (specific emission 2.75 kgCO2/kg fuel). The use of hydrogen [13], ammonia [14], or other low carbon fuels is under investigation for several types of vessel [15].…”

Section: Introductionmentioning

confidence: 99%

A MILP Approach for Hybrid Energy Systems Design for Sustainable Maritime Mobility

Cavo

Mantelli

Rivarolo

2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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In this paper, an optimization algorithm based on a Mixed-Integer Linear Programming (MILP) solver is developed to determine the best energy generation solutions for marine applications. Environmentally sustainable systems (e.g., fuel cells and batteries), heat recovery devices (e.g., HRSG and Organic Rankine Cycles) and traditional power technologies (e.g., diesel generators and fired boilers) are modelled as linear systems to simulate their off-design performance. The tool considers thermal, electrical and propulsion power demands, space constraints, fuel type and availability for up to three main-vertical zones of the ship. From this information, the optimizer identifies the energy system configuration which minimizes a cost optimization function. The objective function considers the actualized capital costs of each technology (based on real market data and updated literature review), fuel costs and CO2 emissions taxes. In this article, the case study of a cruise ship is considered. The optimization is performed referring to real historical load demands of the cruise ship and several typical mission profiles are considered to simulate a whole operational year. Then, the same optimization is performed after a reduction of the price of H2, which is expected in the near future according to the latest market forecasts. Thanks to this analysis, it is possible to determine the influence of this economic parameter on the optimal on-board power generation configuration. It is worth noting that the approach presented here has a general validity and can be applied for the optimization of various typologies of maritime vessels. Moreover, the MILP algorithm could be easily expanded to consider additional demands (e.g. cooling power), constraints (e.g., weight), and power systems.

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“…To reach these targets, the introduction of lowcarbon fuels and innovative technologies is mandatory. The replacement of HFO with LNG fueled engines is the first step but not sufficient [7][8] [9]. Thus, other alternative fuels, i.e., ammonia and methanol, to be used in ICEs also in combination with other fuels, have been investigated recently [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

A multi-criteria approach for comparing alternative fuels and energy systems for marine applications

G.N.¹,

Montagna²,

Piccardo³

et al. 2022

Preprint

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This paper presents an algorithm to compare traditional and innovative energy systems for maritime applications, adopting a multi-criteria method. The algorithm includes a large and updated database of market solutions. Two case studies are investigated: (i) a sailing yacht (ii) and a large-size cruise ship. For case (i), Fuel Cells represent a competitive solution, in particular considering navigation in emission control areas; the installation of electrical batteries is also evaluated. For case study (ii) Internal Combustion Engines are the best solution: the evaluation of alternative fuels (LNG, ammonia, methanol) is performed, also in dual-fuel configuration.

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A new scheme for large marine vessels LNG cold energy utilization from thermodynamic and thermoeconomic viewpoints

Cited by 25 publications

References 19 publications

An algorithm for comparative analysis of power and storage systems for maritime applications

An algorithm for comparative analysis of power and storage systems for maritime applications

A MILP Approach for Hybrid Energy Systems Design for Sustainable Maritime Mobility

A multi-criteria approach for comparing alternative fuels and energy systems for marine applications

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