Tag Archives: energy

Nuclear reactor for efficient conversion of Tar Sands

I have said for years that Canada would eventually use nuclear energy to process the tar sands. It looks like Toshiba is going to make it happen. Converting tar sand to useful oil takes a lot of energy. Since there’s lots of tar on site, that’s the source of energy. A significant fraction of the energy in the tar goes into processing instead of into the consumer’s gas tank. Putting a nuclear reactor on site means that the processing energy comes from uranium instead. In some sense, it’s a conversion of uranium energy into hydrocarbon energy.

Of course, from a climate standpoint, it could be better. We could convert uranium energy (or solar energy!) into converting carbon dioxide into fuel instead of converting tar sand into fuel. But tar sand is a much more concentrated carbon source than the atmosphere.

What I think it really interesting is the funding model. Buy a nuclear reactor and plug it into your plant. That saves energy so you don’t have to burn your fuel on site. That frees up fuel for sale which pays for the reactor. How long before countries without tar sands figure it’s worth their money to convert other resources (e.g. biomass, municipal waste, natural gas) to fuel?

How grid storage can make solar work economically

A new ARPA-E startup is developing a battery improvement with a target price of $0.17 per watt-hour. I imagine that this price reflects current market prices for materials and so it might not reflect a revised demand scenario as we try to build large scale grid energy storage. However, if lithium batteries can be developed for this price, it seems likely that liquid magnesium (target price $0.05 per watt-hour), iron air (target price $0.10 per watt-hour) or some other advanced battery can get to a similar price point.

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Nuclear Renaissance China

It seems that there will be a nuclear Renaissance in China.

https://www.llnl.gov/news/aroundthelab/2010/Nov/ATL-110510_china.html

This is probably good news for US companies who can can bid on contracts for the components for new reactors. And the US still is a leader in that field. China considers Nuclear energy to be Green energy – as well they should. The Chinese coal industry kills miners regularly and sickens the populace with pollutants. Say what you will about nuclear energy, it kills a lot fewer people and the pollution is, gram for gram, a enormously smaller problem.

-Peter

Algae for Biofuels

Another article crossed my desk that was all about algae for biofuels. This one quoted a figure: Algae absorbed roughly 20% of all venture capital invested in biofuels last year. I think that’s pretty impressive. That’s about $180 million. Also impressive: an article over at Green Car Congress talks about a 91 octane gasoline derived from algal a biocrude.

Here are a few of the companies looking into algae biofuels:

Sapphire Energy

Petrosun [edit 3/9/14, defunct]

Imperium Renewables

GreenFuel Technologies [defunct]

AXI, LLC – this one is was cooperating with my Alma Mater [defunct]

-Peter