Development of a floating current turbine

Takagi, Ken; Waseda, Takuji; Nagaya, Shigeki; Niizeki, Yoshiki; Oda, Yoichi

doi:10.1109/oceans.2012.6404979

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…With several tidal projects under development in various parts of the world [5] there is an urgent need to address certain research areas. While there are many studies focusing on the technological [6][7][8][9], environmental [10,11], and economic [10,[12][13][14][15] aspects of tidal energy, there are only a few studies dealing with the social aspects [16]. This is expected as tidal technology is relatively new and has not yet been implemented commercially leading to relatively scarce information about, especially among the general public.…”

Section: Introductionmentioning

confidence: 99%

Information flow to increase support for tidal energy development in remote islands of a developing country: agent-based simulation of information flow in Flores Timur Regency, Indonesia

et al. 2021

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Background Public awareness is crucial for successful deployment of tidal energy, a renewable energy source that can provide clean electricity to remote islands. However, considering public attitudes on tidal energy are not well known, especially in developing countries, a barrier exists in implementing public engagement strategies. This study aims to contribute by identifying strategies for information provision—the initial step in public engagement—and estimate how these can be engaged to enhance support for tidal energy among the local public in a remote area of a developing country, in this case, Flores Timur Regency, Indonesia, considering their socio-cultural background. Methods In this paper, we employ statistical analyses using multinomial probit modelling to identify the key variables that shape information flow. The aptness of the variables is then verified using post-estimation techniques for their use as input parameters for the simulation of the information flow in the field study area. Agent-based simulation (ABS) is employed to replicate the actual conditions in Flores Timur Regency, Indonesia, and simulate the flow of information through the local community. Results According to the multinomial probit estimations, the people belonging to the top hierarchical group show a higher probability to support tidal energy compared to the members belonging to the lower groups. Understandably, around twice as many information flow cycles are needed to disseminate information to the members of the lowest hierarchical group, compared to the members of the top hierarchical group. The results also show that increasing the amount of available information has a positive impact on information dissemination. Conclusions This study demonstrated that information provision is highly effective with propagation of information that specifically highlights the individual benefits, rather than the community benefits of tidal energy. Additionally, savings in terms of costs, time, and efforts can be realized if the most influential members of the local community are targeted initially before including all other stakeholders. The study also indicated that locals absorb more information and increase their support for tidal energy when additional data is made available. Finally, as long-term strategy, information provision becomes most effective when the local population gains higher educational capabilities.

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Section: Introductionmentioning

confidence: 99%

Information flow to increase support for tidal energy development in remote islands of a developing country: agent-based simulation of information flow in Flores Timur Regency, Indonesia

et al. 2021

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“…During the progression of tidal energy technology from theoretical phase to experimental phase, many studies focusing on the engineering aspects as turbine designs (Sakata, Gonoji, & Takagi, 2012; Takagi, Waseda, Nagaya, Niizeki, & Oda, 2012) and economic aspects such as cost effectiveness, break‐even capital costs, levelised costs, and cost reduction (G. Allan, Gilmartin, McGregor, & Swales, 2011; G. J. Allan, Lecca, McGregor, & Swales, 2014; Lande‐Sudall, Stallard, & Stansby, 2019; Magagna & Uihlein, 2015; Stallard, 2012) were initiated. When the technology progressed further to pilot project phase, additional studies focusing on the environmental aspects were initiated, with some describing the potential impacts after real‐time monitoring (Lande‐Sudall et al, 2019; ATDP [2013], OERA [2012]; MEYGEN [2011] and Marine Current Turbines [2011]).…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Enhancing local support for tidal energy projects in developing countries: Case study inFlores Timur Regency, Indonesia

2020

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Tidal energy is a new renewable energy source that can be used to provide electricity to remote islands, while contributing to climate change mitigation. Like all renewable energy projects, public awareness and support are not only crucial for the successful development of marine renewable energy projects too, but also aid the private sector project developers in making long-term plans. As information about tidal energy is not easily available, public views toward it are not well known, making it challenging for the project developers to strategize implementation strategies. Moreover, the limited studies focusing on such social aspects of tidal energy come from advanced countries, highlighting the lack of focus on cases from developing countries. Our study fulfills this gap by providing a case study focusing on the social aspects of tidal energy in a developing country, which can be utilized by developers for designing their public engagement strategies. We estimate the public support for tidal energy in eastern Indonesia using two methods: (a) stages of development and (b) information provision. Using the first method, we found that support for tidal energy is lower in the initial stages, but it keeps rising once the public can realize the benefits. The second method shows that though people tend to support tidal energy, the role of information provision is dissimilar compared with western cases. Additionally, Probit modeling shows that Age, Education, Collective Outcome Favorability, and especially, Individual Outcome Favorability are the key factors that positively impact the support for tidal energy in eastern Indonesia.

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“…Cribbs and Van Zwieten [10] have also studied in detail the sensitivity of system responses to parametric variations. Shibata et al [11] have conducted both experimental and numerical studies to investigate the stability of a V-shape mooring system connected to an ocean turbine developed by Takagi et al [12]. Rho et al [13] have proposed methods to select and optimize the mooring system for a tidal turbine located in a shallow water region.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of The FKT System with Different Mooring Lines

Chen

Hsin

et al. 2019

Polish Maritime Research

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To harness the endless hydrokinetic energy of the Kuroshio current, the joint research team of the National Taiwan University and the National Taiwan Ocean University has developed a floating Kuroshio turbine (FKT) system in Taiwan. In normal operation, the system floats at a certain small depth from the ocean surface to reduce the wave effects and take advantage of faster current speeds. In the present study, the effect of the mooring line on the system dynamics is investigated computationally. Two different auxiliary mooring line designs and, for each design, three different common mooring lines (polyester ropes of neutral buoyancy, iron chains, and 6×19 wires ropes with wire core) are examined. The study makes use of several commercial and in-house packages, integrated to find various coefficients. It is found that the mooring line, the auxiliary mooring line design, and the gravity centre can have a significant effect on system fluctuations in normal operation if the combination of these factors is not properly matched.

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Development of a floating current turbine

Cited by 8 publications

References 4 publications

Information flow to increase support for tidal energy development in remote islands of a developing country: agent-based simulation of information flow in Flores Timur Regency, Indonesia

Information flow to increase support for tidal energy development in remote islands of a developing country: agent-based simulation of information flow in Flores Timur Regency, Indonesia

Enhancing local support for tidal energy projects in developing countries: Case study inFlores Timur Regency, Indonesia

Dynamics of The FKT System with Different Mooring Lines

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