
July 6, 2023 By John Konrad
The 🌊 Challenging Future Of Floating Wind Farms
SNIPPETS:
The industry is locked in a race against time, innovating and experimenting with various floater designs. Some are opting for concrete over steel, as exemplified by the Hywind Tampen project. However, the future seems to favor steel, with the majority of the floating offshore wind farms in the coming years expected to be steel-based. The steel requirement for each floater is estimated to be twice that of monopile foundations for bottom-fixed wind farms. This implies that managing a floating wind project’s capital expenditure will necessitate large and cost-efficient fabrication capacities, likely situated far from the installation sites in Europe or the US.
Why this insatiable demand for steel? The answer lies in the realm of physics.
Three of the common types of floating wind turbine platforms. Josh Bauer/NRELPicture these turbines as towering giants, their heads piercing the sky, their bodies plunging into the depths of the sea. They stand tall, like a lever arm, with the wind exerting its force high up at the turbine’s shaft. This scenario is reminiscent of a child on a seesaw, pushing down on one end with all their might. The turbine, like the seesaw, experiences a torque, a rotational force that threatens to topple it.
Beneath the surface, the floater serves as a counterbalance, akin to the leaded keel of a sailboat. It provides a low center of gravity, helping to keep the structure upright. But this is only part of the solution. The wind, relentless and powerful, pushes against the turbine, threatening to displace it from its location.
This is where anchors or tension legs – connected via thick cables – come into play, serving as the roots of these sea giants. They dig deep into the seabed, holding the turbine in place, much like the roots of a tree gripping the earth to withstand a storm. These anchors or tension legs counteract the force of the wind, preventing the turbine from being pushed off its location. ... ...
The sea, in all its majestic grandeur, is a realm of relentless forces. It is a world where saltwater gnaws at metal, where
winds howl with unyielding ferocity, and where waves 🌊 crash with the power of a thousand hammers.
In this harsh and unforgiving environment, our floating wind turbines would stand as defiant sentinels, their survival a testament to human ingenuity. Yet, their existence will be a constant battle against the elements.
The longevity and reliability of these structures are paramount, but achieving this is no small feat. The corrosive saltwater, the battering winds, and the relentless waves all conspire to wear down the turbines and their components. Regular maintenance is the shield against this onslaught, a necessary ritual to ensure their continued operation.
Yet, the task of maintenance is a complex dance with the elements. The turbines stand in remote locations, far from the comforting shores, making them difficult to access. The logistics of this task are akin to the challenges faced by the oil and gas industry in their deepwater construction projects. The costs, both financial and logistical, are substantial, but they are the price we pay for harnessing the power of the wind in the vast expanse of the sea.
The other shield is engineering durability into the design, this is effective but requires the use of expensive metals and high-end components.
Full article:

https://gcaptain.com/challenging-future-of-floating-wind-farms/