White House Chronicle

News Analysis With a Sense of Humor

  • Home
  • King’s Commentaries
  • Random Features
  • Photos
  • Public Speaker
  • WHC Episodes
  • About WHC
  • Carrying Stations
  • ME/CFS Alert
  • Contact Us

Nuclear Engine to Change Nuclear Future, Simplify Waste Issue

August 25, 2018 by Llewellyn King Leave a Comment

One of the frustrating and intriguing things about nuclear energy is that there is no standard design that is essential. For example, if you want to build a motorcar, you need to start with the idea that it will have four wheels; three is less effective, and two with gyroscopes is something else again.

But when it comes to nuclear reactors, there are seemingly no limits. There are literally hundreds of reactor designs and possibilities. The moderator, which acts like a shock absorber to the reaction, varies too. It is nearly always water, but it can be gas, salt or a liquid metal.

The end, though, is to use fission to produce power to turn a generator to make electricity or to propel a ship, like a submarine or aircraft carrier.

So far, so good. But the limit is that the reactor only produces heat, which then must be converted, through steam or some other medium, into shaft horsepower to make electricity or to drive the submarine.

In my many years of writing about nuclear and chronicling its ups and downs, I have always been aware of the apparent weakness here: Huge, sophisticated power plants are only giant kettles; their purpose is to boil water, albeit very effectively.

Periodically, scientists have tried to tackle this issue with thoughts on a direct conversion of heat to useful work in turning a drive shaft for whatever end use.

There have been theoretical attempts to make the leap to the direct use of nuclear heat for work without a transfer agent. The great nuclear theorist Leo Szilard, according to his biographer William Lanouette, toyed with an idea but abandoned it.

But there is a way, says Mark Adams, an MIT-educated physicist and former staff member at the Lawrence Livermore National Laboratory in California. He has designed an engine that he calls an “internal” rotary engine, rather like the kind of Wankel engine that has been around since the 1950s. Instead of pistons going up and down, the engine has a rotor that rotates around a crank shaft.

The rotary engine that Adams envisions looks diagrammatically very like a schematic of the rotatory engine that Mazda introduced to varying degrees of success in its cars in the 1970s.

It works like this: A small amount of gasified “nanofuel,” which contains nuclear material mixed with hydrogen, is ignited by a neutron source to set up a controlled fission reaction, creating heat and propelling the rotor forward and driving the crank shaft. The fuel can be derived from the transuranic parts of spent conventional nuclear fuel or can be created separately.

A company dedicated to energy innovation, Global Energy Research Associates (GERA), is working on design and raising money. The Department of Energy has held back.

Adams, 45, explains his engine this way, “Much like the way your car converts chemical energy into mechanical work, our engine converts nuclear energy directly and safely into useful mechanical work. This eliminates a lot of expensive reactor equipment and paves the way for low-cost nuclear power plants.”

He says his engine would produce 340 megawatts of electric power, if deployed in a combined-cycle configuration. The radioactive byproducts are only cesium and strontium with half-lives of about 30 years — a great improvement on the nuclear waste from conventional reactors. It would be a high-level waste burner as well as an energy source. Tests to prototype engine components are underway at the Idaho National Laboratory in Idaho Falls.

The nuclear engine would shut itself down automatically if things went wrong. A meltdown accident of the kind seen at Three Mile Island and Fukushima is not possible, according to GERA, which Adams formed to demonstrate and market the engine.

One must have, as one must with all futuristic, high-technology designs, a healthy skepticism and a lot of excitement.

Email, RSS Follow
Email

Filed Under: King's Commentaries

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

White House Chronicle on Social

  • Facebook
  • Twitter
  • Vimeo
  • YouTube
Silicon Valley and Its Unique Challenge to Freedom of Speech

Silicon Valley and Its Unique Challenge to Freedom of Speech

Llewellyn King

H.L. Mencken, journalist and essayist, wrote in 1940, “Freedom of the press is limited to those who own one.” Twenty years later, the same thought was reprised by A.J. Liebling of The New Yorker. Today, these thoughts can be revived to apply, on a scale inconceivable in 1940 or 1960, to Big Tech, and to […]

The Capitol Enshrines All the Best of Our Aspirations

The Capitol Enshrines All the Best of Our Aspirations

Llewellyn King

Cry, the beloved building. I have been lucky and have walked the halls of the Houses of Parliament in London, visited the Elysée Palace in Paris, the Bundestag in Berlin, and the Kremlin in Moscow. But it is the Capitol, the building on a hill in Washington, that fills me with awe but it isn’t […]

Big Tech Should Be Left Alone While It Is Still Creating

Big Tech Should Be Left Alone While It Is Still Creating

Llewellyn King

When it comes to invention, we ain’t seen nothing yet. The chances are good, and getting better, that in the coming year and the years after it, our world will essentially reinvent itself. That revolution already is underway but, as with most progress, there are political challenges. Congress needs restraint in dealing with the technological […]

Face Masks: What’s Good for Us Isn’t Good for the Geese

Face Masks: What’s Good for Us Isn’t Good for the Geese

Linda Gasparello

When I lived in Manhattan, I pursued an unusual pastime. I started it to avoid eye contact with Unification Church members who peddled flowers and their faith on many street corners in the 197os. If a Moonie (as a church member was known derisively) were to approach me, I’d cast my eyes down to the […]

Copyright © 2021 · White House Chronicle Theme on Genesis Framework · WordPress · Log in