Talk-Polywell.org

even if the electrons do never hit the magnets, the 15% power that is NOT converted has to show up somewhere Well, keep in mind, "waste heat" probably mostly ends up lost in a Carnot cycle somewhere in a steam turbine (even in a p-B11, I imagine you push your heat from cooling through a turbine if ...

When the gyroradius of the 6 MeV (maximum energy) alphas is below the size of the donut hole they don't hit the coil casings. Cooling rqmts go way down. That happens at around 1T for a 1 m "hole". The coils are where you have the maximum heat problem. Out at the wall you have lots of area. Figure 3...

The surface area of the direct conversion system should be much larger than the basic spherical surface area. Unfortunately it's also harder to cool... you can do that only to a certain degree .. and it makes cooleing the parts that are closest to the core not easier as you might have problems fitt...

I worked it out assuming alpha impingement equal to intercept area and the edge of conventional cooling (1 MW/m^2). And came up with 100 MW. i.e. the reactor Doc B designed. With SC Magnets the intercept area no longer applies. So anything from 1 to 100 GWf may be possible. For D-D water cooling of...

Actually, power output goes as B^4R^3, or roughly R^7 if you make an assumption about magnet design. Gain is what goes as R^5, at least according to Dr. B, but gain is not directly proportional to power output. And yes, there will be a point beyond which cooling is prohibitively difficult. I don't ...

polywell power goes up with roughly r^5 - the amount of "waste heat" we will have to cool away will go up with the same power law (even if the total system reaches 85% effciency or better) the surface we can cool with however only goes up with r^2 - this ultimately means that the heat load per surfa...