{"id":23027,"date":"2025-02-10T16:03:23","date_gmt":"2025-02-10T16:03:23","guid":{"rendered":"http:\/\/141.23.68.248\/wp\/?page_id=23027"},"modified":"2025-02-10T23:57:05","modified_gmt":"2025-02-10T23:57:05","slug":"3b-wind-turbine","status":"publish","type":"page","link":"http:\/\/141.23.68.248\/wp\/?page_id=23027","title":{"rendered":"3b. Wind Turbine"},"content":{"rendered":"

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An offshore wind turbine is a large wind-powered generator installed in seas or oceans to capture strong and steady offshore winds for electricity generation. Winds over the ocean are generally stronger and more consistent than on land due to the absence of obstacles that can impede airflow (<\/span>NOAA, 2012<\/span><\/i>). Compared to onshore turbines, offshore wind farms benefit from higher wind speeds, unobstructed airflow, and minimal noise concerns, making them both more efficient and less disruptive. Their location also allows for the installation of larger, more powerful turbines (up to 15 MW) that generate greater amounts of energy. Additionally, offshore wind power plays a key role in reducing fossil fuel dependence, cutting CO\u2082 emissions, and advancing global climate goals, making it a crucial step toward a sustainable energy future. On average, offshore wind turbines generate more power, with capacities reaching up to 15 MW, compared to the average onshore turbine capacity of 2.5\u20133 MW (<\/span>National Grid, 2023<\/span><\/i>).<\/span><\/p>\n

Integrated Concept<\/b><\/h4>\n

Traditionally, jacket platforms are employed for larger wind turbines in deeper waters due to their structural stability and cost-effectiveness in such environments (National Renewable Energy Laboratory, 2016). However, integrating monopile wind turbines into existing breakwaters offers a unique advantage. Breakwaters are often situated in deeper waters where wind speeds are higher and more consistent, making them an ideal location for wind energy production (Coastal Wiki, 2023). By utilizing the inherent stability of breakwaters, the need for additional support structures like jacket platforms is eliminated, as the breakwater itself provides the necessary foundation and protection for the wind turbines.<\/span><\/p>\n

In typical offshore wind turbine installations, jacket platforms are used to support turbines in deeper waters, where monopile foundations may not provide sufficient stability. This is particularly important in areas with significant wave action, as the jacket structure’s design allows it to withstand dynamic wave forces, ensuring the stability and longevity of the wind turbine (Wind Energy Science, 2019). However, when wind turbines are integrated directly into breakwaters, they can harness both wind and wave energy while benefiting from the breakwater\u2019s structural integrity, reducing the need for separate jacket platforms.<\/span><\/p>\n

Additionally, the wind turbines within the breakwater system generate renewable power that is directly utilized by offshore structures, reducing their dependence on fossil-fuel-based energy sources. This electricity can be shared with offshore oil and gas platforms, port facilities, or nearby coastal infrastructure, supporting a hybrid energy model that enhances overall energy efficiency and sustainability. By leveraging this integrated approach, offshore assets benefit from a reliable, self-sustaining energy supply, minimizing environmental impact while ensuring long-term operational resilience.
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Material\u00a0<\/b><\/h5>\n

The construction of offshore wind turbines involves significant material usage, which varies depending on the type of foundation and support structure.<\/span><\/p>\n

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\nThe tables compare material usage and costs for a Jacket Platform Wind Turbine and a Breakwater-Integrated Monopile Wind Turbine. The Jacket Platform requires more steel (600 tons vs. 370 tons), concrete (500 m\u00b3 vs. 471m\u00b3), and grout (100 m\u00b3 vs. 50 m\u00b3), resulting in higher material and installation costs. The total cost for the Jacket Platform is $2,190,000, while the Breakwater-Integrated Monopile costs $1,423,500. This results in a cost saving of $766,500 when opting for the Breakwater-Integrated Monopile Wind Turbine.<\/span><\/strong><\/p>\n

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The maintenance cost comparison highlights that the Monopile integrated with Breakwater system is more cost-efficient across all activities. Turbine and gearbox replacements are significantly cheaper, with savings of \u20ac600,000 and \u20ac100,000, respectively, due to easier accessibility and simpler structural design. Partial repairs and blade replacements also incur lower costs, reflecting reduced complexity in the monopile structure. Additionally, marine growth cleaning and re-coating are less expensive (\u20ac60,000 vs. \u20ac150,000) because the monopile\u2019s smooth, uniform surface minimizes biofouling, reducing both frequency and effort required for maintenance.<\/span><\/p>\n

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\nIntegrating monopile foundations into breakwaters is cost-effective due to reduced structural and maintenance costs. Despite a lower maximum capacity (up to 10\u201312 MW), they offer sufficient performance for medium-scale projects. This dual-purpose design optimizes space and resources, making it a practical solution for offshore developments which is what we are aiming for in our integrated system.
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Failure Rate Over the Lifetime<\/b><\/h5>\n

Wave-induced cyclic loads significantly influence fatigue failure in offshore wind turbine support structures. For monopile foundations, wave action is a critical design factor, with cyclic loads contributing substantially to fatigue damage, especially at the midline where bending moments are highest (Wang et al., <\/span>Wind Energy<\/span><\/i>, 2016). In contrast, jacket-supported turbines experience less fatigue stress concentration, with fatigue damage to jacket leg joints estimated at less than 20% of their fatigue capacity over a 25-year design life (Li et al., <\/span>MDPI Sensors<\/span><\/i>, 2024). However, integrating monopiles with breakwater structures reduces direct wave exposure, minimizing cyclic load impacts and enhancing fatigue resistance. This integration improves structural durability and reduces maintenance demands compared to traditional jacket platforms, making monopile-breakwater systems more efficient in harsh marine environments (Li et al., 2024; Wang et al., 2016).<\/span><\/strong>\"whatsapp-image-2025-02-10-at-23-18-02\"
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Breakwater Integration for Structural Optimization<\/strong><\/h4>\n

In the integrated monopile-breakwater model, the turbine foundation is strategically placed inside the breakwater to achieve the following:<\/span><\/p>\n