this seems a mystery but maybe it is the key. as far as I understand your discussion, it seems impossible Ni particles surface structure stay stable even at 1000C... it won't be liquid, but will be aggregated too easily...
when something works and there is something like a problem, maybe it is what make it work. the reaction came from a local abnormal structure in Ni or Pd , Ti, NiCu, ... I remember of codeposition experiments by spawar... now imagine an equivalent with Ni vapor? Ni is gaseous, at least evaporated, and forms particles with the NAE... the particle we see are regenerated. maybe is it why they are so strangely enriched. think about the Iwamura experiment... Pd on CaO works ? maybe Ni on Alumina works? ... people who say that it cannot be 1400C/1250C, have to admit that it would be incredibly lucky for IH to deliver a reactor that don't work and then have the testers measure abnormal temperature tht correct that anomaly... especially if Rossi is there and tune with a thermocouple retroaction the target temperature at 1250C without moaning... question is thus why it work, how it work... if particles cannot survive, maybe they don't . maybe the role of the alumina is to avoid particle to stick 2014-10-19 0:11 GMT+02:00 Bob Cook <frobertc...@hotmail.com>: > Axil-- > > Your question: > <<<How can the surface of the reactor sustain a temperature of 1420C > if the nickel particles are cooler that that temperature.>>> > > Answer---The energy is generated by the particles is radiant energy and > all is absorbed by the alumina near the inner surface with none being > absorbed by the Ni particles. This seems unlikely to me. > > Bob > > ----- Original Message ----- > *From:* Axil Axil <janap...@gmail.com> > *To:* vortex-l <vortex-l@eskimo.com> > *Sent:* Saturday, October 18, 2014 11:38 AM > *Subject:* Re: [Vo]: Gettering in the Lugano IH reactor > > This idea contributes the belief that the nickel particles are the source > of heat production. What you are saying is that the particles caused heat > to be generated somewhere else in the reactor, not in or near the nickel > particles. How can the surface of the reactor sustain a temperature of > 1420C if the nickel particles are cooler that that temperature. > > On Sat, Oct 18, 2014 at 2:10 PM, Bob Higgins <rj.bob.higg...@gmail.com> > wrote: > >> The left side (in Figure 1) 45-50mm of the reactor are much cooler than >> the heated core between the insulated supports. This end near the >> thermocouple plug probably never exceeded 700C. Particles that ended up >> there did not undergo as much sintering. As I recall the Lugano test >> particle was nearly 500 microns across and probably was that size due to >> substantial sintering with smaller particles. Sintering of Ni would still >> occur in the colder part. >> >> On Sat, Oct 18, 2014 at 11:59 AM, Axil Axil <janap...@gmail.com> wrote: >> >>> And yet, particle 1 which showed Ni62 transmutation also shower that the >>> tubercle nano-surface was still in place after days of 1400C operation. Any >>> ideas? >>> >>> On Sat, Oct 18, 2014 at 1:13 PM, Bob Higgins <rj.bob.higg...@gmail.com> >>> wrote: >>> >>>> As someone who has first hand experience working with micro-scale >>>> carbonyl Ni powder, and treating these powders in a thermochemical reactor, >>>> I can tell you that what you are saying about the nickel particles is 100% >>>> wrong. Even these 4-10 micron scale nickel particles will sinter into a >>>> porous mass by heating at 500-700C. Ni melts at 1455C and the nano-scale >>>> features will all melt at about half of this temperature - the nanoscale >>>> features will ball-up onto the micro-scale nickel particle to which the >>>> feature may be attached. Any nanopowder of Ni present is melted before >>>> 800C and becomes a larger particle - and then condenses. And Rossi >>>> specifically says he does not use nickel nanopowder anyway. The same is >>>> true for other free nanoparticles. By the time the IH reactor is operating >>>> above 1000C, there are no nickel nanoparticles or nano-features of any kind >>>> left - they are all melted into larger agglomerations. >>>> >>>> I don't know what your experience is with, but it is not with nickel >>>> powder. Alumina does not store hydrogen in any significant measure. >>>> >>>> >
