Cost, Energy Efficiency and Carbon Footprint Analysis of Hybrid Light-Weight Bulk Carrier

Palomba, Giulia; Marchese, S. Scattareggia; Crupi, Vincenzo; Garbatov, Y.

doi:10.3390/jmse10070957

Cited by 11 publications

(4 citation statements)

References 37 publications

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“…The amount of GHG emissions from shipbuilding processes is relatively small (only 0.4 ~ 0.5% of national emissions), but individual shipbuilders should be aware of the economic and environmental impacts. A way to reduce GHG emissions is shown in [34]where the use of aluminium honeycomb sandwich for ship construction demonstrated less energy consumption and carbon footprint, compared to the whole steel solution, with 57% energy saving and 71% carbon footprint reduction compared to conventional steel ship structure.…”

Section: Fig 2 Average Energy Intensity % For Unit Cgt [8]mentioning

confidence: 99%

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2022

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It has been sufficiently proven that the existence of extensive eelgrass fields in coastal areas has positive economic and ecological as well as health-promoting effects. Eelgrass meadows of the species Zostera marina largely dissipate the energy of fluid flow close to the sea bed. This prevents, for example, scour formation of coastal structures or sanding-up of traffic channels. The oxygen-carbon balance of seaweed is many times better than that of rainforests. Likewise, recent research results say that eelgrass meadows significantly limit the spread of harmful bacteria of the species Vibrionidae. On the other hand, a significant decline in eelgrass meadows in the northern hemisphere has been noted for years. In this light, the authors set themselves the goal of designing a technology for efficient and sustainable reforestation of seagrass beds and testing it in the southern Baltic Sea. The basis of their technological approach is the well-known principle of "rolled turf". The seeds or young plants are placed on specially developed textile, plastic-free growing media. They are cultivated under controlled conditions, e.g. in greenhouses. After a few days to weeks, the growth media including plants will be fixed on the previously determined location on the seabed by means of diving operations. The paper presents the technological concept as well as initial results.

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Section: Fig 2 Average Energy Intensity % For Unit Cgt [8]mentioning

confidence: 99%

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2022

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“…As a kind of clean energy, wind energy can significantly improve the energy-saving effect and reduce emissions [9,20]. Wind energy is widely distributed around the world, and there are wind resources at almost any time and anywhere in the ocean [21,22]. Moreover, regarding wind energy, as a kind of renewable energy, it has become a trend for ships to use wind energy to realize emission reduction [23].…”

Section: Introductionmentioning

confidence: 99%

Evaluation Method for Energy Saving of Sail-Assisted Ship Based on Wind Resource Analysis of Typical Route

Wang

et al. 2023

JMSE

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Sail-assisted technology can reduce greenhouse-gas emissions by saving the energy consumption of ships with wind energy utilization. The distribution characteristics of marine wind resources are critical to the energy-saving effect of sail-assisted ships. However, due to the lack of effective energy-saving evaluation methods for improving the utilization rate of wind energy, a high potential for wind energy utilization still exists. A novel energy-saving evaluation method based on the wind energy resource analysis of typical ship routes is proposed in this paper. First, a three-degree-of-freedom motion model for sail-assisted ships considering the wing sail forces is constructed. Then, a wind resource acquisition and analysis method based on spatial–temporal interpolation is proposed. On this basis, the wind field probability matrix and wing sail force matrix are established. Ultimately, an energy-saving evaluation method for sail-assisted ships on typical routes is proposed by combining the sailing condition of ships. The case study results show that the energy-saving effect of a wing sail-assisted oil tanker that sailed on the China-to-Middle East route was more than 5.37% in 2021 and could reach 9.54% in a single voyage. It is of great significance to realize the popularization and application of sail-assisted technology, thus improving the greenization of the shipping industry.

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“…Both numerical and experimental analysis, involving actual ice wedge and plain AHS panels, were performed with the aim of collecting data and lay the foundations for possible future designs. Another use of AHS in marine structure was suggested in [11], where a design procedure for was proposed and then further developed in [12], for the application of AHS as a replacement for the conventional steel inner side shell of the cargo hold of a bulk carrier. Despite the attention toward lightweight structural solutions increasing in the marine industry, AHS has not gained a stable role in shipbuilding practice so far.…”

Section: Introductionmentioning

confidence: 99%

Static and Fatigue Full-Scale Tests on a Lightweight Ship Balcony Overhang with Al/Fe Structural Transition Joints

Palomba

Corigliano

Crupi

et al. 2022

JMSE

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Combination of lightweight and sustainable marine structures represents a crucial step to accomplish weight reduction and improve structural response. A key point when considering the reliability of innovative structural solutions, which should not be neglected, is represented by large-scale experimental investigations and not only by small-scale specimen analysis. The present research activity deals with the experimental assessment of a lightweight ship balcony overhang, which incorporates an aluminium honeycomb sandwich structure and Al/Fe structural transition joints obtained by means of the explosion welding technique. The ship balcony overhang was formerly designed with the aim of proposing the replacement of ordinary marine structures with green and lightweight options. Experimental investigations of a large-scale structure were performed to validate the design procedure and to evaluate the feasibility of the proposed solution. Large-scale bending tests of the ship balcony overhang were performed considering representative configurations of severe loading conditions. The experimental analysis allowed the evaluation of the structure’s strength, stiffness and failure modes. Comparisons with analogous structures reported in the literature were performed with the aim of assessing the benefits and drawbacks of the proposed lightweight structure. Fatigue tests were also performed in order to evaluate the hardening and the hysteresis loops. The collapse modes of the structure were investigated using X-ray radiography. The structural transition joints have experienced no cracks during the static and fatigue tests. The results clearly indicated that the proposed solution can be integrated in new and existing ships, even if made of steel, as the Al/Fe structural transition joints produced by explosion welding can be used to connect the ship structure to the Al honeycomb balcony. The systematic analysis of the experimental results gave valuable data to enhance the design methodology of such structures.

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Cost, Energy Efficiency and Carbon Footprint Analysis of Hybrid Light-Weight Bulk Carrier

Cited by 11 publications

References 37 publications

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Evaluation Method for Energy Saving of Sail-Assisted Ship Based on Wind Resource Analysis of Typical Route

Static and Fatigue Full-Scale Tests on a Lightweight Ship Balcony Overhang with Al/Fe Structural Transition Joints

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