Green Ship Technologies

Kat, Jan Otto de; Mouawad, Jad

doi:10.1007/978-3-030-04330-8_2

Cited by 7 publications

(4 citation statements)

References 1 publication

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“…A twisted rudder, which is twisted from the propeller centreline, is a concept able to reduce the fuel consumption. Different from the devices to regain loss, the design of twisted rudder is to reduce the drag due to angled flow acting on the rudder [109]. The potential energy saving of twisted rudder was in the order of 1-2%, which has been estimated in model scale by numerical simulation and experimental study [110].…”

Section: Manoeuvring Energy-saving Devicesmentioning

confidence: 99%

Study on Applicability of Energy-Saving Devices to Hydrogen Fuel Cell-Powered Ships

Stark

Zhang

et al. 2022

JMSE

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The decarbonisation of waterborne transport is arguably the biggest challenge faced by the maritime industry presently. By 2050, the International Maritime Organization (IMO) aims to reduce greenhouse gas emissions from the shipping industry by 50% compared to 2008, with a vision to phase out fossil fuels by the end of the century as a matter of urgency. To meet such targets, action must be taken immediately to address the barriers to adopt the various clean shipping options currently at different technological maturity levels. Green hydrogen as an alternative fuel presents an attractive solution to meet future targets from international bodies and is seen as a viable contributor within a future clean shipping vision. The cost of hydrogen fuel—in the short-term at least—is higher compared to conventional fuel; therefore, energy-saving devices (ESDs) for ships are more important than ever, as implementation of rules and regulations restrict the use of fossil fuels while promoting zero-emission technology. However, existing and emerging ESDs in standalone/combination for traditional fossil fuel driven vessels have not been researched to assess their compatibility for hydrogen-powered ships, which present new challenges and considerations within their design and operation. Therefore, this review aims to bridge that gap by firstly identifying the new challenges that a hydrogen-powered propulsion system brings forth and then reviewing the quantitative energy saving capability and qualitive additional benefits of individual existing and emerging ESDs in standalone and combination, with recommendations for the most applicable ESD combinations with hydrogen-powered waterborne transport presented to maximise energy saving and minimise the negative impact on the propulsion system components. In summary, the most compatible combination ESDs for hydrogen will depend largely on factors such as vessel types, routes, propulsion, operation, etc. However, the mitigation of load fluctuations commonly encountered during a vessels operation was viewed to be a primary area of interest as it can have a negative impact on hydrogen propulsion system components such as the fuel cell; therefore, the ESD combination that can maximise energy savings as well as minimise the fluctuating loads experienced would be viewed as the most compatible with hydrogen-powered waterborne transport.

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Section: Manoeuvring Energy-saving Devicesmentioning

confidence: 99%

Study on Applicability of Energy-Saving Devices to Hydrogen Fuel Cell-Powered Ships

Stark

Zhang

et al. 2022

JMSE

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“…Flettner rotors are vertical cylinders that spin around their axis and generate a propulsive force in a perpendicular direction to that of the wind hitting the rotor. These rotors are driven by an electrical motor to take advantage of the Magnus effect and can act as a propulsion supplement for the vessel (De Kat and Mouawad, 2019). Another technology is the ejection of air-bubbles from the hull of the ship as a means to reduce the frictional resistance of the hull (Kato et al, 2001).…”

Section: Technological Measuresmentioning

confidence: 99%

Decarbonizing maritime transport: A Ro-Pax case study

Zis

Psaraftis

Tillig

et al. 2020

Research in Transportation Business & Management

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“…Some are already in use, others are in use in smaller numbers but are available for more widespread use, and yet others are in various stages of development. The list in Table 7 is suggestive of the range of possibilities [3,[61][62][63][64][65]. It is organized into groups: energy efficiency, alternative propulsion systems and fuels, machinery systems, and new information technologies, as well as operational measures.…”

Section: Technologiesmentioning

confidence: 99%

Black Carbon and Other Air Pollutants in Italian Ports and Coastal Areas: Problems, Solutions and Implications for Policies

Brewer¹

2020

Applied Sciences

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Ships’ emissions of air pollutants pose problems for local and regional public health and agricultural production, as well as global climate change. The Italian government’s endorsement in 2019 of the creation of a Mediterranean Emission Control Area is a reflection of increasing concern about the emissions. Also, ongoing developments in the International Maritime Organization and in the European Union add to the Italian government’s maritime shipping agenda and increase its complexity and uncertainty. In that context, this review paper addresses two central questions: What are the consequences for human health and agricultural production of ships’ emissions in Italian ports and coastal areas? How can their emissions be reduced? The approach to these questions is inter-disciplinary. It applies the results of studies in atmospheric chemistry and physics; maritime shipping engineering; public health; agriculture; economics; and international law and policymaking to assess current and prospective policy issues in Italy. The principal conclusions are that: (1) Black carbon emissions are threats to human health and agricultural production in Italy, as well as to the global climate. (2) It is important that black carbon emissions receive more serious attention in policymaking processes in order to reflect the significant analytic progress that has been made in terms of understanding the problems it poses and the technological and policy solutions. (3) There are cost-effective, emission-reducing measures that are readily available, as well as other measures needing more time before full-scale implementation. (4) Although existing multi-level governance systems pose complex analytic and policymaking challenges, they also offer opportunities to institute new policies with significant short-term and long-term co-benefits from reductions in emissions.

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Green Ship Technologies

Cited by 7 publications

References 1 publication

Study on Applicability of Energy-Saving Devices to Hydrogen Fuel Cell-Powered Ships

Study on Applicability of Energy-Saving Devices to Hydrogen Fuel Cell-Powered Ships

Decarbonizing maritime transport: A Ro-Pax case study

Black Carbon and Other Air Pollutants in Italian Ports and Coastal Areas: Problems, Solutions and Implications for Policies

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