Showing posts with label hydrogen. Show all posts
Showing posts with label hydrogen. Show all posts

Sunday, November 9, 2008

Our New Nuclear Future?

Barack Obama’s victory will certainly result in the government putting more emphasis on alternative energy. Unfortunately, my guess is that this will only result in more subsidies going to special interests to fund unworkable solutions, like ethanol, rather than in making real progress towards solving our challenges with imported oil.

I’ve written here before about the tremendous amount of venture capital that is being poured into Silicon Valley solar energy startups. I’ve also written about the Picken’s Plan to build a corridor of wind turbines in the Great Plains. Ditto with plug-in electric cars, like the Tesla Roadster, and fuel cells. Another part of the solution may be lightweight nuclear power stations.

A company in New Mexico – Hyperion Power Generation – has licensed some technology from Los Alamos National Laboratory to produce small, compact nuclear energy modules that can be transported to locations wherever electricity is needed.

Each energy module is about the size of a hot tub and can supply the electricity needs of 20,000 homes for 7 to 10 years, at a cost of about $150 per home per year.

The modules don't contain any moving parts. The modules produce energy via a safe, natural heat-producing process that occurs with the oscillation of hydrogen in uranium hydride. The modules cannot go “supercritical,” melt down, or get too hot. They maintain a safe operating temperature without the use of cooling rods. Think of them as kind of a big battery.

The modules are sealed in concrete and would be buried underground. Each module would be removed and refueled at original factory every 5 years.

The modules don’t emit any greenhouse gases. The fuel used in the modules cannot be turned into weapons grade material. The amount of waste after 5 years of operation is about the size of a softball.

The modules can be built in a tiny fraction of the time it takes to build a large nuclear plant. The company already has orders and they expect to ship their first product in 2013.

Plug-in electric cars and creation of hydrogen for fuel cells will require the generation of a lot more electricity than we generate today. Solar and wind are important part of the mix, but they can’t fulfill all of our growing needs. Nuclear needs to be part of the solution and this is a game changing technology to provide it.

Let’s hope that Obama’s proposed increase in the capital gains tax won’t dry up investments for this and other innovative solutions to our most pressing problems.

Saturday, July 19, 2008

The Electric Car to the Rescue?

Tesla Motors has begun production of a 100% plug-in electric car. The Tesla Roadster is not what most people think of when they hear the term “electric car”. The Roadster goes from 0 to 60 in under 4 seconds. Its peak torque begins at 0 rpm and stays strong at 13,000 rpm, which is very different from gasoline engines that have little torque at a low rpm. It has a top speed of 125 mph. It can travel about 220 miles per battery charge. Charging the battery takes about 3.5 hours. Useful battery life is estimated to be about 100,000 miles.

The Tesla Roadster costs about $100,000, which puts it out of reach for all but a select few. However, the company is expected to introduce a 4 door, 5 passenger sports sedan in 2010 with a price tag around $60,000, making it competitive with high-end Mercedes and BMWs. Tesla believes that over time the technology will improve to the point where a car like the sedan could be sold for as little as $30,000.

Tesla Motors isn’t the only company introducing plug-in electric cars. Mitsubishi said that is will launch its MiEV plug-in electric in Japan next year. The compact car has a top speed of about 80 mph and can travel about 100 miles on a single charge. The price is expected to be about $30,000.

General Motors is gearing up to introduce a plug-in hybrid – the Chevy Volt, which can travel up to 40 miles on a single charge. The Volt will also come with a small gasoline engine that engages to charge the battery when it runs down. Since 80% percent of American commuters drive less than 40 miles each day, a Volt driver might need only to fill up his tank with gasoline a few times a year.

Plug-in electrics might be one of the long-term solutions to our transportation needs, or they might just be a transitory technology on the road to fuel-cell electrics, which are powered by hydrogen and can be refueled like gasoline cars to support traveling long distances. Regardless, it’s great to see the market responding so vigorously to the problems we are facing with rising oil prices.