Du solaire PV flottant en mer, possible ?

[mobar]

Le solaire flottant en mer vaudrait mieux en installer massivement sous les tropiques qu'en mer du nord
Le rendement serait meilleur, ça éviterait au soleil de réchauffer la mer et on pourrait installer des pompes à hydrogène pour ravitailler les navires en pleine mer

[energy_isere]

China’s wave-resistant floating photovoltaic platform to enter experimental session

October 2, 2024 evwind

China’s first wave-resistant floating photovoltaic platform, “Yellow Sea No. 1,” is currently undergoing the final equipment commissioning in the Yellow Sea, before starting a one-year experimental session.

The platform, located in waters near the southern part of Shandong Peninsula, is a huge hexagon with 434 photovoltaic panels. The main function of this platform is to test different photovoltaic panels and select those with the highest power generation efficiency and the most suitable for actual sea conditions, providing a basis for the construction of large-scale offshore photovoltaic platforms in the future.



The platform is about 7.5 meters from the sea surface, so that waves and sea wind can pass through under the platform almost without any obstruction, making the platform more stable. There are dozens of buoys in a large circle near the sea surface, which provide buoyancy for the entire platform and prevent waves from contacting the photovoltaic panels.

“When the waves come into contact with the photovoltaic panels, salt crystals will form, which will affect the efficiency of photoelectric conversion. In addition, seawater will corrode our photovoltaic components and electrical systems. Therefore, our entire platform is raised to a higher level above the sea, so that even under sea conditions unseen in 50 years, the waves will not come into contact with our photovoltaic panels,” said Bi Cheng, an engineer of the “Yellow Sea No. 1” project under China Huaneng Group.

The water depth of the sea area where the platform is located is over 30 meters. In order to ensure that it can stand firm in the rough sea, six anchor chains, each weighing 55 tons and about 265 meters in length, are used to firmly tie the platform to the seabed.

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https://www.evwind.es/2024/10/02/chinas ... ion/101431

[Glycogène]

Mmmmmmhhh, pour ce genre d'installation PV, le temps de "remboursement" de l'énergie nécessaire à la fabrication et installation (et entretien) risque d'être un peu plus élevé que les 2-3 ans qu'on donne généralement pour une installation terrestre...

[GillesH38]

c'est censé résister aux typhons de quelle force ?

[Jeudi]

Mmmmmmhhh, pour ce genre d'installation PV, le temps de "remboursement" de l'énergie nécessaire à la fabrication et installation (et entretien) risque d'être un peu plus élevé que les 2-3 ans qu'on donne généralement pour une installation terrestre...

C’est probable effectivement, mais l’éolien terrestre est épuisable bien avant l’éolien océanique. Par ailleurs la meilleure technologie pour le EPBT est le solaire imprimable, donc l’EPBT n’est pas le meilleur prédicteur de ce qui est le plus rentable/commode.

[energy_isere]

Mise en service d'une première phase d' un gros parc solaire PV flottant en mer en Chine :

Offshore floating photovoltaic plant in Fujian in China sends electricity to grid
November 11, 2024 evwind

The first phase of an offshore photovoltaic (PV) power-generation platform built in the sea off Dongshan county, East China’s Fujian province, started supplying electricity to the grid on Friday.



The project, operated by the China Three Gorges Corporation, is the country’s first offshore PV project built in a sea area with high wind speeds, and the first offshore PV project in Fujian.

With a planned installed capacity of 180 MW, the project is equipped with a 110-kilovolt onshore booster station and an energy-storage system.

“In the future, the Dongshan offshore PV project will seek to combine power generation and fishery breeding to become a floating power plant and a sea fish farm,” said Liao Jianxin, general manager of the Fujian branch of China Three Gorges Corporation.

The site area of the offshore PV project covers approximately 203 hectares. After the project is fully completed, it will provide 300 million kilowatt-hours of clean electricity on average annually, equivalent to the power generated by 90,200 tons of standard coal.

In September 2023, the National Energy Administration proposed supporting pilot offshore PV projects in areas with favorable solar energy resources and construction conditions.

China also encourages the integration of photovoltaics with other industries. A white paper released earlier this year promoted the co-development of PV projects and marine aquaculture.

https://www.evwind.es/2024/11/11/offsho ... rid/102437