Energy

Whisky Biofuel from Scotland

- Adam Clare

A lot of people enjoy Scottish whisky and now their cars can also enjoy the same beverage. Scottish scientists have figured out how to use the byproducts of whisky production as a source for biofuel.

Copious quantities of both waste products are produced by the £4bn whisky industry each year, and the scientists say there is real potential for the biofuel, to be available at local garage forecourts alongside traditional fuels. It can be used in conventional cars without adapting their engines. The team also said it could be used to fuel planes and as the basis for chemicals such as acetone, an important solvent.

The new method developed by the team produces butanol, which gives 30% more power output than the traditional biofuel ethanol. It is based on a 100-year-old process that was originally developed to produce butanol and acetone by fermenting sugar. The team has adapted this to use whiskey by-products as a starting point and has filed for a patent to cover the new method. It plans to create a spin-out company to commercialise the invention.

Read more at The Guardian.

Keeping it Cool Without Air Conditioning

- Adam Clare

In really hot countries air conditioning in buildings might seem like a necessity; however, it is possible to design buildings that stay cool in the heat without even using electricity. In Burkina Faso there is a school that was specially designed to stay nice and cool by manipulating airflows.

There’s not much electricity to go around, Kéré says. “So there is no air-conditioning. It’s too expensive for a country like Burkina Faso.”

So when he designed this secondary school for Dano in his native land, he built it with innovative, elegant, distinctive and yet simply constructed split-level roofing and ceiling structures that funnel warm air up and out of the buildings.
…
Tall window slats that can be adjusted control both light and heat. Three to a room, they pull air into the classroom. Heat rises.
To use that movement of air, a series of narrow “chimney” gaps between the convex wave shapes in the highly insulating concrete and brick ceiling pulls the hot air up and out the roof.

Read more and see pictures here.

Sustainable Power in Southern Mexico

- Adam Clare 1 Comment

Here’s an informative short video on energy entrepreneurs in a poor part of southern Mexico the provide sustainable electricity to locals. The generators are built locally and are designed to allow almost anyone build a generator. This is really good to see happening.

Even Cheaper Solar Cells

- Adam Clare

We recently reached the point that solar power is cheaper than nuclear power and now some researchers at the University of Toronto have found a way to make solar cells even cheaper by using nickel instead of gold.

One of the major drawbacks of most renewable energy sources is high cost. In order to see a huge rise in the use of renewable energy sources, prices must come down. In the world of solar there have recently been some major breakthroughs in cost advantages and efficiency increases. Scientists at the University of Toronto in Canada have come up with a way to reduce colloidal quantum dot solar cell prices by up to 80%, by swapping out costly conductive gold for cheap nickel.

Read more: Super Cheap Solar Cells Just Got Cheaper, Switch Gold For Nickel

Solar Power is Cheaper than Nuclear

- Adam Clare 1 Comment

Solar power is a wonderfully sustainable source of energy and its biggest hurdle to wide adoption is cost (and going up against subsidized fossil fuels). Well, now the nuclear crowd can’t claim that solar is too expensive because the fact of the matter is that solar power is cheaper than nuclear!

It’s no secret that the cost of producing photovoltaic cells (PV) has been dropping for years. A PV system today costs just 50 percent of what it did in 1998. Breakthroughs in technology and manufacturing combined with an increase in demand and production have caused the price of solar power to decline steadily. At the same time, estimated costs for building new nuclear power plants have ballooned.

The result of these trends: “In the past year, the lines have crossed in North Carolina,” say study authors John Blackburn and Sam Cunningham. “Electricity from new solar installations is now cheaper than electricity from proposed new nuclear plants.”

If the data analysis is correct, the pricing would represent the “Historic Crossover” claimed in the study’s title.

Two factors not stressed in the study bolster the case for solar even more:

1) North Carolina is not a “sun-rich” state. The savings found in North Carolina are likely to be even greater for states with more sunshine –Arizona, southern California, Colorado, New Mexico, west Texas, Nevada and Utah.

2) The data include only PV-generated electricity, without factoring in what is likely the most encouraging development in solar technology: concentrating solar power (CSP). CSP promises utility scale production and solar thermal storage, making electrical generation practical for at least six hours after sunset.

Keep reading.

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