Windfarms do not Kill Birds

There have been allegations that wind turbines kill birds and thus are a negative power system overall. Science to the rescue! Ornithologists have completed a study about migratory birds and how well they fare around wind farms. The answer? Birds are fine.

The study, which is published in the Journal of Applied Ecology, was carried out jointly by four naturalists and ornithologists from the RSPB, Scottish Natural Heritage and the British Trust for Ornithology (BTO). It goes against widespread allegations by critics of windfarms that clusters of turbines routinely cause serious damage to wild birds, through collision with the revolving blades, noise and visual disturbance.

James Pearce-Higgins, the lead author and principal ecologist with the BTO, said: “It was a bit of a surprise that the impact on windfarms seemed to be happening during construction rather than operation.”

“It means we should look at ways in which these negative impacts can be minimised. The next step will be to find out whether those steps are effective,” he said.

Read more.

New Windfarm for Shetland Islands to Power 175,000 Homes

The Shetland Islands will be getting what is expected to be the most productive wind farm on the planet. Wind blows across the islands almost all the time thus producing a space friendly to wind turbine efficiency.

The joint venture between energy giant SSE and Viking Energy Ltd, owned by the trust, will have 370MW capacity and is expected to generate enough energy for 175,000 homes – sixteen times the number of homes on Shetland.

One small turbine on a hill north of Lerwick, called Betsy, already holds a world record for its efficiency, reaching 59% of its potential output, thanks to the consistently powerful winds which sweep Shetland.

The developers said that meant the Viking scheme had the potential to be the most productive in the world. Councillor Bill Manson, chairman of Viking Energy Partnership, said: “This is good news for Shetland, good news for Scotland and good news for the fight against climate change.”

Read the rest at the Guardian.

Denmark Increases Green Energy Transition

Denmark is getting looking to have 50% of it’s energy come from wind power and are looking to further their need to import any energy at all. Not only is Denmark looking to lower the need for foreign energy they are trying to decrease the amount of energy that the country uses.

“Denmark will once again be the global leader in the transition to green energy,” said Lidegaard. “This will prepare us for a future with increasing prices for oil and coal. Moreover, it will create some of the jobs that we need so desperately, now and in the coming years.”

The agreement will help Denmark achieve its goal of supplying 100% of its energy from renewables by 2050, including electricity, heating, industry and transport.

Read more here.

Hot Invention Cools Down Environment

A seemingly banal industrial component is a heat exchanger and they can be ridiculously inefficient. What a heat exchanger does is regulate the temperature of machines that have to be kept cool like an industrial sized-fridge.

At Concordia, a doctoral student has created a new device that can make heat exchangers more efficient and thus environmentally-friendly. It’s this sort of advancement that is good for the environment and good for profits so I’m sure we’ll see his heat exchanging technology being implemented sooner rather than later.

The innovation behind Vatistas’s unique design comes from over two decades of research into vortex flows. “Growing up in southern costal Greece,” recalls Vatistas, “I became familiar with the concept of vortices at an early age when my elders would warn me of the dangers of swimming near whirlpools!” Youthful fascination evolved into research passion as Vatistas performed advanced theoretical work into how vortices alter the flow of fluid substances like air or water. He later went on to gain international renown for proving Nobel Prize-winner J.J. Thomson’s 125-year-old theorem on the stability of vortex rings.

But it is on the practical side of things where Vatistas’s work resonates loudest. When Vatistas realized that swirling flow could dramatically increase heat transfer exchange, the commercial application of his research quickly became evident. He then partnered with Valéo Management L.P. to investigate new designs of heat exchangers and received a prestigious Idea to Innovation Grant from the Natural Sciences and Engineering Research Council in support of the work.

Read more at Concordia’s site.

Japan Develops Wind Turbine That Doubles Output

A simple addition to the standard wind turbine setup called a wind lens can double, or even triple, the power output.

Professor Prof. Yuji Ohya of the Kyushu University research institute for applied mechanics (RIAM) has been working with a team to improve the efficiency of wind turbines. Combining an inlet shroud, a diffuser, and a brim into a wind lens, power output has been improved by a factor of 2 to 5 times in several experiments. Turbine noise is also decreased.

Here’s more on the matter.

Thanks Greg!

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