#11064
zapkitty
Participant

vansig wrote: if i recall correctly, the model, with various different parameters, predicts from about a third to half of input energy being emitted in x-ray.

the 80% figure for the onion capturing the x-rays might be unrealistic. if we capture its energy with photo-voltaic cells, we can get 10 to 20%. if we capture its energy with a heat engine, we can get about 55%. (but i have not fully explored the possibilities).

Nope. The efficiency of photoelectric conversion of a photon is directly proportional to the energy of the photon. That’s why infrared-range photoelectric converters are not nearly as efficient as visible-range converters. X-ray conversion will be even more efficient than visible light conversion. The trick is catching enough of them first.

There’s no great mystery about X-ray photoelectrics… it’s just that before FF there was no reason to investigate it as a power source.

And the heat from an FF unit, once removed from the core, would be what is considered “low grade” heat in industrial terms… not efficient for turbine use.

vansig wrote: the present set of parameters for attempting break-even is…

… not being attempted for FoFu-1 (what a name 🙂 ) The only coils in the drift tube are for measurement, not power conversion.

What [em]will[/em] be attempted is a demonstration of scientific feasibility. If they can show that an FF-style DPF produces enough extra energy to make a generator feasible then it’s game, set and match… and without having to build an actual generator on top of everything else they have to do.