Tag archives: renewable energy
By Hamish Johnston
When I think of superconductivity, applications that could improve the environment don’t usually come to mind. Perhaps that’s because superconductors only work at very low temperatures and lots of energy is needed to cool them. However, a review article just published in the IOP Publishing journal Superconductor Science and Technology points out some interesting environmental applications.
By Matin Durrani
Running on hydrogen and oxygen and producing just electricity without any nasty emissions, fuel cells have over the years been used to power everything from bikes and buses to cars and even planes.
But last week saw the debut of a fuel cell at Imperial College London that was used to power a rock band. The fuel cell was unveiled at a summer barbeque organized by the Hydrogen and Fuel Cells (H2FC) Supergen Hub – a scheme funded by the UK’s research councils to boost interest in fuel cells among UK universities and businesses.
By Margaret Harris at the APS March Meeting in Baltimore
With so many sessions taking place at the APS March Meeting, finding time to write about them is almost impossible. However, now that I’m waiting for my flight from Baltimore back to the UK, I’ve got all the time in the world – so here’s my list of five conference highlights.
By Hamish Johnston
How much energy could be generated worldwide using wind turbines? That’s the sort of back-of-the-envelope calculation that physicists love.
Estimates by scientists had put the generation rate at somewhere between 56 and 400 TW. To put that into perspective, a typical nuclear or fossil-fuel power plant churns out about 1 GW.
However, these calculations don’t tend to consider the impact of huge wind farms on the wind itself. Now, David Keith of Harvard University and Amanda Adams of the University of North Carolina have used a “mesoscale” weather model to do just that.
Their conclusion is that previous estimates of global wind capacity could be as much as 10 times too high.