An overview of development of tidal current in China: Energy resource, conversion technology and opportunities

Dong, Li; Wang, Shujie; Yuan, Pingzhi

doi:10.1016/j.rser.2010.06.001

Cited by 70 publications

(26 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The kinetic flux density is an excellent indicator of the tidal current energy resource available at a site which is proportional to the fluid density and the cube of its speed [16][17][18][19]. Therefore the speed is the most significant factor when deciding if a site is feasible for energy extraction [20][21][22][23]. Most of the tidalcurrent-flow research along the coastline to-date was done for the purpose of mapping fish species and spawning areas, and for the benefit of shipping.…”

Section: Introductionmentioning

confidence: 99%

Ireland’s tidal energy resource; An assessment of a site in the Bulls Mouth and the Shannon Estuary using measured data

O'Rourke

Boyle²,

Reynolds³

2014

Energy Conversion and Management

View full text Add to dashboard Cite

The issues associated with Ireland's over reliance on fossil fuels to meet energy demands have sparked an interest in renewable energy. Renewable energy resources typically are intermittent and vary significantly in energy intensity. Tidal energy however has the advantage of predictability over large time scales and high power densities. A study of Ireland's tidal-current-energy resource has identified several viable sites. As part of this resource assessment, Acoustic Doppler Current Profilers were installed at two locations along Ireland's west coast, at a site in the Bulls Mouth and the Shannon Estuary. The Acoustic Doppler Current Profilers measured tidal current speed and direction at 30 minute intervals over a 30 day period at a range of depths through the water column. This is the first time the measured data appears in the literature as it has only recently been made public. This paper presents tidal current speed and direction, frequency of occurrence of speed, tidal roses at several depths through the water column, and a comparison of theoretical tidal-current-speed profiles with measured data for a site in the Bulls Mouth and in the Shannon Estuary. The paper compares power density at both sites over a lunar month and also proposes a best fit power law exponent with the measured data through the water column. Finally, the paper presents an energetic performance comparison for a tidal current turbine operating at both sites. The data presented in this paper can be used in the design process to estimate the hydrodynamic and structural performance of a tidal current turbine operating under real-life conditions. The data can also be used to assess different control strategies and to design a tidal current turbine to suit the site-specific characteristics.

show abstract

Section: Introductionmentioning

confidence: 99%

Ireland’s tidal energy resource; An assessment of a site in the Bulls Mouth and the Shannon Estuary using measured data

O'Rourke

Boyle²,

Reynolds³

2014

Energy Conversion and Management

View full text Add to dashboard Cite

show abstract

“…With the increasing depletion of traditional fossil energy, like coal, oil and gas, renewable energy is growing to be the main focus of attraction in the world by considering its green nature. Amongst in different types of renewable energy resources, during the last decades, tidal energy has been targeted and explored as one of the most promising type due to its high predictability and resource abundance (Charlier, 2003;Li et al, 2010;Pelc and Fujita, 2002). Hence various types of tidal energy devices have been developed in recent years.…”

Section: Challenge For Tidal Energymentioning

confidence: 99%

Optimal design of a thin-wall diffuser for performance improvement of a tidal energy system for an AUV

et al. 2015

View full text Add to dashboard Cite

The study presents an energy performance improvement measure for an Autonomous Underwater Vehicle (AUV) carrying oceanographic equipment for collecting scientific data from the ocean. The required electric energy for the on-board equipment is harvested from tidal energy by using twin horizontal axis turbines which are integrated with thin-wall diffusers to enhance their energy capturing performance. The main focus and hence objective of the paper is the optimal design of the diffusers by using Reynolds Average Navier–Stokes Equations (RANSE) based Computational Fluid Dynamics (CFD) method and the validation of the design using physical model tests. A goal-driven optimisation procedure is used to achieve a higher power coefficient for the turbine while keeping the size and the drag of the diffuser as practically minimum as possible. Two main parameters of the optimisation are selected, the outlet diameter and the expansion section length of the diffusers, which are optimised for the highest flow acceleration ratio at the diffuser throat and for the minimum drag of the integrated diffuser and turbine system which is called as "Diffuser Augmented Tidal Turbine" (DATT) system. The numerical optimisation is validated by two sets of physical model tests conducted with a single turbine without diffuser and the same turbine integrated with the diffuser (DATT) in a cavitation tunnel and a circulating water channel. These tests demonstrated a performance enhancement for the turbine with the optimal diffuser by almost doubling the power coefficient of the turbine without the diffuser. However, the performance enhancement was dependent upon the pitch angle of the turbine

show abstract

“…Some examples include the UK (Draper et al, 2014;Xia et al, 2010), the USA (Brooks, 2011), Canada (Karsten et al, 2008) or Norway (Grabbe et al, 2009), but also the coasts of developing countries such as Iran (Rashid, 2012) or China (Li et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Quantification of the tidal stream exergy in the ría de Vigo (NW Spain)

Mösso

Griñó

Sierra

et al. 2017

IJEX

View full text Add to dashboard Cite

Abstract:The exergy of the tidal currents in the ría de Vigo area (NW Spain) is quantified using the results of a 28-day long simulation of the tidal flows. The results show that the northernmost strait connecting the ría with the Atlantic Ocean is a promising site for tidal energy tapping, in contrast with the energetically weaker estuary. On the basis of the average power density (APD), a 7.5 km 2 region is identified in this strait as the most advantageous area to install tidal energy converters (TECs), with a total annual exergy of around 2 M. Mestres et al.3865 MWh/m 2 . Similar analyses using only 14-day simulations change this value in 16%, depending on whether the tidal cycle considered is apogean or perigean. The study contributes to enlarge the inventory of sites along the NW Spanish coast at which tidal stream energy can be potentially extracted.

show abstract

An overview of development of tidal current in China: Energy resource, conversion technology and opportunities

Cited by 70 publications

References 17 publications

Ireland’s tidal energy resource; An assessment of a site in the Bulls Mouth and the Shannon Estuary using measured data

Ireland’s tidal energy resource; An assessment of a site in the Bulls Mouth and the Shannon Estuary using measured data

Optimal design of a thin-wall diffuser for performance improvement of a tidal energy system for an AUV

Quantification of the tidal stream exergy in the ría de Vigo (NW Spain)

Contact Info

Product

Resources

About