par GillesH38 » 19 nov. 2019, 23:15
Bizarre quand meme ...
Heliogen, a clean energy company that emerged from stealth mode on Tuesday, said it has discovered a way to use artificial intelligence and a field of mirrors to reflect so much sunlight that it generates extreme heat above 1,000 degrees Celsius.
le four solaire d'Odeillo, mis en service en 1970, atteignait déjà 3500 °C ...
https://fr.wikipedia.org/wiki/Four_solaire_d%27Odeillo
The breakthrough means that, for the first time, concentrated solar energy can be used to create the extreme heat required to make cement, steel,
pour faire de l'acier, il faut déjà un réducteur chimique du minerai de fer, la chaleur ne suffit pas. Et si c'est pour l'affinage (pour bruler l'excès de carbone dans la fonte), on fait déjà ça à l'électricité ...
For now, Heliogen is squarely focused on solar. One problem with solar is that the sun doesn't always shine, yet industrial companies like cement makers have a constant need for heat. Heliogen said it would solve that issue by relying on storage systems that can hold the solar energy for rainy days
ils veulent stocker de la chaleur à 1000 °C ?

Bizarre quand meme ...
[quote]Heliogen, a clean energy company that emerged from stealth mode on Tuesday, said it has discovered a way to use artificial intelligence and a field of mirrors to reflect so much sunlight that it generates extreme heat above 1,000 degrees Celsius.
[/quote]
le four solaire d'Odeillo, mis en service en 1970, atteignait déjà 3500 °C ...
https://fr.wikipedia.org/wiki/Four_solaire_d%27Odeillo
[quote]The breakthrough means that, for the first time, concentrated solar energy can be used to create the extreme heat required to make cement, steel, [/quote]
pour faire de l'acier, il faut déjà un réducteur chimique du minerai de fer, la chaleur ne suffit pas. Et si c'est pour l'affinage (pour bruler l'excès de carbone dans la fonte), on fait déjà ça à l'électricité ...
[quote]For now, Heliogen is squarely focused on solar. One problem with solar is that the sun doesn't always shine, yet industrial companies like cement makers have a constant need for heat. Heliogen said it would solve that issue by relying on storage systems that can hold the solar energy for rainy days
[/Quote]
ils veulent stocker de la chaleur à 1000 °C ? :-k