inductive heating only works on conductive materials with sufficient thickness/area through which the changing magnetic flux passes to allow eddy currents to form. With 150Hz pulses Nickel particles of tiny scale would not be affected (like thin motor laminates) - it would only work to heat a secondary metal body that could then heat via radiation (very inefficient, and of no practical benefit).
On 13 October 2014 00:35, Stefan Israelsson Tampe <[email protected]> wrote: > How do we know that iti s resistive heating that is taking place? Bob > Greenyer at MFMP sugested that it is an inductive heater this means that > the wires > get a bit cooler then the heated core. > > On Sun, Oct 12, 2014 at 6:24 PM, Robert Lynn < > [email protected]> wrote: > >> Fig 12b. page 26. Only just notice that they say they are "inconel" >> resistance wires. But how can the resistor wire, external to the reactor, >> glow more brightly than the reactor itself (implying it is hotter)? Also >> if the reactor external surface is at 1250-1410°C, then on top of the >> 30-50°C temperature drop through the walls the resistive wire would have to >> be even hotter (up towards 1500°C) in order to be able to radiate the >> 900W! And there are no "inconel" metal wires that can survive such >> temperatures in air for a month. >> http://www.engineeringtoolbox.com/melting-temperature-metals-d_860.html >> >> There is also a mistake in their discussion for these figures, the metal >> resistors within the reactor would necessarily have to be hotter than the >> reactor itself if they are to be able to output heat into the reactor. But >> then again at >1450°C inconel resistance wires would have turned into >> puddles anyway. >> >> The 2mm high fins on the outside, subjected to convective air cooling >> would be 30-50°C colder than the base of the fins due to the longer >> conduction path and hence greater temperature drop through the alumina. >> And that should influence the thermography to under-read, but also means >> the temperature within the reactor would have to be even higher to create >> 1400°C average surface temperature. >> >> So this proves that the thermographic temperature readings are off by a >> very long way - at least 150-200°C too high if inconel wires that max-out >> at about 1300-1350°C were to have survived for a month. We now know there >> is a huge error, we just don't know the source of the error, or how big the >> error is. But eg 1210°C vs 1410°C would drop power output by 40% from that >> claimed so that the COP would be <2. >> >> With the existence of such a huge error of unknown source the claims of >> power output cannot not be trusted at all. >> >> On the upside, it does however mean that the nickel was not melted, and >> lithium vapour pressure was a lot lower. >> > >
