FacebookTwitterLinkedInEmailPrint分享Science Magazine:Floating wind turbines at sea could create up to three times as much electricity as turbines on land, increasing the energy potential for a technology that has yet to be proven at scale, a new study suggests.Scientists at the Carnegie Institution for Science in Palo Alto, California, wanted to know whether turbines installed in the open ocean—where air currents are 70% stronger than on land—would also face wind shadow problems. So they conducted virtual experiments using a climate model, and in today’s issue of the Proceedings of the National Academy of Sciences atmospheric scientist Anna Possner and climatologist Ken Caldiera report that turbines placed in the North Atlantic could produce three times as much power as an existing wind farm in Kansas of similar size. Driving this greater potential are wintertime low-pressure systems, which occur more frequently at sea than land. They efficiently mix energy from fast, upper level winds down to the surface of the ocean, speeding surface winds. That means offshore wind turbines in close proximity would still encounter each other’s wind shadow, the authors write, but the wind speed would recover because of the replenished energy, allowing for sustained high power.The authors say their findings should spur companies to try to overcome those obstacles, however, estimating that offshore wind farms in the North Atlantic alone “could potentially provide civilization-scale power.”More: Offshore wind farms have powerful advantage over land-based turbines, study finds Report: Offshore Wind Can Produce ‘Civilization-Scale Power’
The Alaves v Real Betis match, originally due to be held on Monday, would take place on Sunday instead, added La Liga.Spain’s biggest soccer institutions have long been at odds over the issue of moving fixtures scheduled to be played at the weekend to a Monday or Friday.League President Javier Tebas has said the matches attract more television viewers and add value to broadcasting rights’ deals, but federation chief Luis Rubiales insisted the games are harder for fans to attend.The two institutions agreed a temporary ceasefire on the issue when the season re-started in June as fans could not attend matches due to Covid-19 restrictions.And while spectators are still not allowed at matches the issue has reared its head again.Share this:FacebookRedditTwitterPrintPinterestEmailWhatsAppSkypeLinkedInTumblrPocketTelegram The first game of the new La Liga season between Granada and Athletic Bilbao set for today has been postponed by a day after a judge from the Spanish soccer federation ruled that matches could not take place on Fridays or Mondays.La Liga said in a statement on Wednesday they would appeal the decision to ensure matches could take place outside of weekends for the second round of fixtures, but confirmed the Granada v Athletic Bilbao game would now be held on Saturday.The first game of the new campaign will now be Eibar’s home fixture with Celta Vigo on Saturday at 4 p.m. local time (1400 GMT), with the Granada-Athletic Bilbao match taking place later in the day at 6:30 p.m.