New equations of wave energy assessment accounting for the water depth

Liang, Bingchen; Shao, Zhuxiao; Wu, Guoxiang; Shao, Meng; Sun, Jinwei

doi:10.1016/j.apenergy.2016.11.127

Cited by 49 publications

(15 citation statements)

References 38 publications

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“…However, this assumption causes obvious errors only in shallow water areas (i.e., those with water depths <0.5 × wavelength) [65]. The more energetic sea areas such as S1-S5 are located in the northern, eastern and southern offshore waters of Taiwan and can be regarded as deep-water areas.…”

Section: Discussionmentioning

confidence: 99%

Identifying the Optimal Offshore Areas for Wave Energy Converter Deployments in Taiwanese Waters Based on 12-Year Model Hindcasts

et al. 2018

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Abstract:A 12-year sea-state hindcast for Taiwanese waters, covering the period from 2005 to 2016, was conducted using a fully coupled tide-surge-wave model. The hindcasts of significant wave height and peak period were employed to estimate the wave power resources in the waters surrounding Taiwan. Numerical simulations based on unstructured grids were converted to structured grids with a resolution of 25 × 25 km. The spatial distribution maps of offshore annual mean wave power were created for each year and for the 12-year period. Waters with higher wave power density were observed off the northern, northeastern, southeastern (south of Green Island and southeast of Lanyu) and southern coasts of Taiwan. Five energetic sea areas with spatial average annual total wave energy density of 60-90 MWh/m were selected for further analysis. The 25 × 25 km square grids were then downscaled to resolutions of 5 × 5 km, and five 5 × 5 km optimal areas were identified for wave energy converter deployments. The spatial average annual total wave energy yields at the five optimal areas (S1)-(S5) were estimated to be 64.3, 84.1, 84.5, 111.0 and 99.3 MWh/m, respectively. The prevailing wave directions for these five areas lie between east and northeast.

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Section: Discussionmentioning

confidence: 99%

Identifying the Optimal Offshore Areas for Wave Energy Converter Deployments in Taiwanese Waters Based on 12-Year Model Hindcasts

et al. 2018

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“…Besides those studies sponsored at government level, numerous researchers have estimated the wave energy resource potential at national, regional and sub-regional levels. Some of these studies can be found in China [42][43][44][45], Ireland [32,46], Spain [39,47], the Mediterranean Sea [48][49][50], the Aegean Sea [51,52], Black Sea [40], India Ocean [53], etc. Table 2 shows estimations of the wave energy resource potential in different regions of the world.…”

Section: Wave Energy Resource Assessmentmentioning

confidence: 99%

Ocean Wave Energy Converters: Status and Challenges

2018

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Wave energy is substantial as a resource, and its potential to significantly contribute to the existing energy mix has been identified. However, the commercial utilization of wave energy is still very low. This paper reviewed the background of wave energy harvesting technology, its evolution, and the present status of the industry. By covering the theoretical formulations, wave resource characterization methods, hydrodynamics of wave interaction with the wave energy converter, and the power takeoff and electrical systems, different challenges were identified and discussed. Solutions were suggested while discussing the challenges in order to increase awareness and investment in wave energy industry as a whole.

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“…These tests have given more insights into the complexities that exist between some of different parameters that contribute to the energy produced by a WEC. Real ocean data of a 7-day period randomly picked from summer (July, [13][14][15][16][17][18][19] and winter (Jan, 1-7) in the GoM. One summer week and one winter week wave data are extracted including both hourly resolution (168 data points) and daily resolution (7 data points).…”

Section: Design Parameters and Their Effects On Wec's Power Outputmentioning

confidence: 99%

“…Others studies focused on specific aspects of the ocean wave energy such as resource characterization have been performed at global [4,5], regional [6][7][8] and local levels [9,10]. Serious exploration and exploitation of ocean wave energy resources are currently being investigated in U.S. [3], Europe [11][12][13], China [14], India [15], etc. Other aspects of ocean wave energy such as economics [16], environmental [17], design [18] and efficiency and performance [19] have all being studied by different researchers.…”

Section: Introductionmentioning

confidence: 99%

Effect of Spatial and Temporal Resolution Data on Design and Power Capture of a Heaving Point Absorber

Aderinto

2020

Sustainability

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For a heaving point absorber to perform optimally, it has to be designed to resonate to the prevailing ocean wave period. Hence, it is important to make the ocean wave data analysis to be as accurate as possible. In this study, existing wave condition data is used to investigate the effect of the temporal resolution (daily vs. hourly) of wave data on the design of the device and power capture. The temporal resolution effect on the estimation of ocean wave resource theoretical potential is also investigated. Results show that the temporal resolution variation of the ocean wave data affects the design of the device and its power capture, but the theoretical power resource assessment is not significantly affected. The device designed for the Gulf of Mexico is also analyzed with wave condition in Oregon, which has about 40 times the wave resource theoretical potential compared to the Gulf of Mexico. The results confirmed that a device should be designed for a specific location as the device performed better in the Gulf of Mexico, which has much less ocean wave resource theoretical potential. At last, the effect of the design, diameter and season (summer and winter) on the power output of the device is also investigated using statistical hypothesis testing methods. The results show that the power capture of a device is significantly affected by these parameters.

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New equations of wave energy assessment accounting for the water depth

Cited by 49 publications

References 38 publications

Identifying the Optimal Offshore Areas for Wave Energy Converter Deployments in Taiwanese Waters Based on 12-Year Model Hindcasts

Identifying the Optimal Offshore Areas for Wave Energy Converter Deployments in Taiwanese Waters Based on 12-Year Model Hindcasts

Ocean Wave Energy Converters: Status and Challenges

Effect of Spatial and Temporal Resolution Data on Design and Power Capture of a Heaving Point Absorber

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