50 or 50 CPS AC current should read
50 or 60 cycle AC current On Sun, Oct 12, 2014 at 1:13 PM, Axil Axil <[email protected]> wrote: > Rossi has said that he uses AC current in the heater and that DC current > does not work. This might indicate 50 or 50 CPS AC current is used to > induce heat in plasma and/or iron. > > On Sun, Oct 12, 2014 at 1:08 PM, Axil Axil <[email protected]> wrote: > >> There are also iron particles in the fuel mix that might support >> inductive heating local to the fuel mix. Inductive heating might result in >> the primary heater wire being colder than the fuel charge thus casting a >> darker shadow that we see in the pictures of the reactor in operation. I >> like the inductive heating idea. >> >> On Sun, Oct 12, 2014 at 1:02 PM, Axil Axil <[email protected]> wrote: >> >>> The tubercles on the nickel powder function to ionize the hydrogen using >>> dipole motion induced by heat. >>> >>> On Sun, Oct 12, 2014 at 12:55 PM, Robert Lynn < >>> [email protected]> wrote: >>> >>>> far above curie limit for Ni, magnetic fields won't move powder >>>> magnetically, only ions, but temps are too low for significant Li or H ions >>>> to exist, and no ionising radiation sources in evidence. >>>> >>>> On 13 October 2014 00:49, Stefan Israelsson Tampe < >>>> [email protected]> wrote: >>>> >>>>> Yes but in that case the core can be hotter then the cables. We don't >>>>> know about the powder, and the changes of magnetic fields inside the core >>>>> could stir the powder around and by changing that behavior you might end >>>>> up >>>>> controlling the reaction rate. Also inductive heating of an inner >>>>> containing cylinder does produce a fast response to the actual cylinder >>>>> which controls the heat radiative environment in there. >>>>> >>>>> On Sun, Oct 12, 2014 at 6:41 PM, Robert Lynn < >>>>> [email protected]> wrote: >>>>> >>>>>> 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. >>>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
