Wave energy in China: Current status and perspectives

Zhang, Dahai; Li, Wei; Lin, Yaolin

doi:10.1016/j.renene.2009.03.014

Cited by 162 publications

(87 citation statements)

References 1 publication

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“…This is proved by the number of recent original research [21,22] and review [23,24] papers. Unfortunately, the highest average value of the wave power flux along the Chinese shore in the northern part of the South China Sea is only 16 kW/m [21].…”

Section: Asiamentioning

confidence: 90%

Spatial Distribution of the Baltic Sea Near-Shore Wave Power Potential along the Coast of Klaipėda, Lithuania

et al. 2017

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Abstract:Wave power is an abundant source of energy that can be utilized to produce electricity. Therefore, assessments of wave power resources are being carried out worldwide. An overview of the recent assessments is presented in this paper, revealing the global distribution of these resources. Additionally, a study, which aims to assess the spatial distribution of the Baltic Sea near-shore wave power potential along the coast of Klaipėda (Lithuania), is introduced in this paper. The impacts of the wave propagation direction and decreasing depth on wave power resources were examined using the numerical wind-wave model MIKE 21 NSW. The wave height loss of the design waves propagating to shore was modelled, and the wave power fluxes in the studied depths were calculated using the JONSWAP wave spectrum modified for the Baltic Sea. The results revealed that all waves that propagate to the shore in the Baltic Sea near-shore area along the coast of Klaipėda from 30 m depth to 5 m depth lose at least 30% of their power. Still, most common waves in this area are low, and therefore, they start to lose their power while propagating to the shore at relatively low (10-14 m) depths. To turn this into an advantage the wave power converter would have to work efficiently under low power conditions.

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Section: Asiamentioning

confidence: 90%

Spatial Distribution of the Baltic Sea Near-Shore Wave Power Potential along the Coast of Klaipėda, Lithuania

et al. 2017

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“…A further increase of the tip radius from 0.75 m to 1.1 m causes the maximum force to increase exponentially. All the certain parameter values were substituted into Equation (8) and the relative oscillating amplitude of the floating buoy was found. Figure 10 shows the curve of the relative oscillating amplitude through the varying tip radius of the circular cone.…”

Section: Analysis Of Power Harvesting Capabilities and Efficiencymentioning

confidence: 99%

“…Many devices have been developed for ocean energy conversion, and numerous ocean energy generation systems have emerged [2][3][4][5][6][7]. Wave energy in China is distributed in the East China Sea and South China Sea; hence, most wave energy convertors (including test devices) are deployed in these two areas [8,9]. However, the East China Sea and South China Sea are typhoon-prone areas.…”

Section: Introductionmentioning

confidence: 99%

A Floating Ocean Energy Conversion Device and Numerical Study on Buoy Shape and Performance

Song

Zhang

Qian

et al. 2016

JMSE

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Wave and current energy can be harnessed in the East China Sea and South China Sea; however, both areas are subject to high frequencies of typhoon events. To improve the safety of the ocean energy conversion device, a Floating Ocean Energy Conversion Device (FOECD) with a single mooring system is proposed, which can be towed to avoid severe ocean conditions or for regular maintenance. In this paper, the structure of the FOECD is introduced, and it includes a catamaran platform, an oscillating buoy part, a current turbine blade, hydraulic energy storage and an electrical generation part. The numerical study models the large catamaran platform as a single, large buoy, while the four floating buoys were modeled simply as small buoys. Theoretical models on wave energy power capture and efficiency were established. To improve the suitability of the buoy for use in the FOECD and its power harvesting capability, a numerical simulation of the four buoy geometries was undertaken. The shape profiles examined in this paper are cylindrical, turbinate (V-shaped and U-shaped cone with cylinder), and combined cylinder-hemisphere buoys. Simulation results reveal that the suitability of a turbinate buoy is the best of the four types. Further simulation models were carried out by adjusting the tip radius of the turbinate buoy. Three performance criteria including suitability, power harvesting capability and energy capture efficiency were analyzed. It reveals that the turbinate buoy has almost the same power harvesting capabilities and energy capture efficiency, while its suitability is far better than that of a cylindrical buoy.

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“…At present, most wave energy converters use hydraulic energy transmission, so the hydraulic system has great promise in the research of wave energy converters [8]. A series of studies of hydraulic power take-off in different wave energy converter models have been conducted by Bjarte-Larsson and Falnes (2006) [9], Hals et al (2007) [10], Yang et al (2009) [11] and others.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Simulative Study on Accumulator Function in The Process of Wave Energy Conversion

Zhang

Liu

Luo

et al. 2016

Polish Maritime Research

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Wave energy in China: Current status and perspectives

Cited by 162 publications

References 1 publication

Spatial Distribution of the Baltic Sea Near-Shore Wave Power Potential along the Coast of Klaipėda, Lithuania

Spatial Distribution of the Baltic Sea Near-Shore Wave Power Potential along the Coast of Klaipėda, Lithuania

A Floating Ocean Energy Conversion Device and Numerical Study on Buoy Shape and Performance

Experimental and Simulative Study on Accumulator Function in The Process of Wave Energy Conversion

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