Lightening releases 8.6 MW/m from partial steam plasma. So a 1mx1cm should release 2.4 MW.
1 H2O+TU->He+O+E2+L+X-ray E2=2.4 MW
I have an American friend building me one. As 2.4 MW would earn 6.8 million a year – from the grid. Carbon 0 power – using 10-17cc of regular water a year. Splash out on a bottle of desalinated water – you can hand 99% on to your children.
So we site the tube in water, and have electric leads to the electronics from a fluorescent light.
When we fire up, we will get massive heat, with a trace of light and low power X-rays. So we seal the boiler – maybe still with the leads coming out, and run a steam turbine. We are looking at 240 kW. A decent sized turbine.
To try it out, lead it out to a little steam engine, and drive a generator.
We have exit steam still at 130oC. So we condense it on a Carnot heat pump – so we can return liquid water and a separate stream of hot gas to the boiler.
We are actually going to get back 90% of the heat.
To try it out, fire up a 1mx1cm steam plasma tube in the Labrador current. So we will melt ice bergs before they hit the shipping channels.
We can do the same on the source water of Siberian rivers, and keep the water way ice free all year.