I agree with Dave. However, it is easy to say, do identical test side by side, but hard to demonstrate boundary conditions regarding heat transfer parameters are also the same.
Thus, the testing should use easy to measure electrical heat sources and assure voltage is measured across each heater/reactor as well as amperage. That way, even if the resistance is not the same, the respective power can be determined for each test. At least 3 t/c's should be used along the outside of the reactor to monitor external temperatures. The pressure manometer that Parkhomov used would also be desirable. Induction heating, as Dave has indicated, would allow only a less accurate determination of actual input power than the resistance heating with the Kanthal wire. Care should be taken to assure that the magnetic fields caused by the Kanthal wire winding can be calculated considering the wire configuration and amperage at any time with errors based on configuration tolerances. A varying magnetic field will cause induction heating of the reactor materials in addition to the resistance heating in the Kanthal and needs to be determined--estimated--for each case. Thus, electrical resistances (conductance) of the various reactor materials as a function of temperature should be used for such estimation. Hopefully it can be shown that this inductive heating is small compared to the resistive heating. As materials change from solid crystals to liquid metal, inductive heating changes can be expected. However the relatively small quantities of liquid metal possible (Li metal) should limit the heating of the reactor by this mode. Crystal phase changes may also cause changes in electrical conductivity and should be evaluated. (It may be that Jack Cole's recent experience with melting of his reactor materials was actually an electrical short that occurred as melting or phase changes happened around the heater wire.) Convection cooling of each test is important to know and assure is the same or close to the same, if temperatures are to be indicative of excess power. Thus, ambient air temperatures should be measured at symmetrical points for each of the tests, with air flows at each test being known and controlled as close to the same value as possible. Errors on measured parameters should be estimated with justification based on experimentation and validation of the monitoring setup. This may not be easy to do and should be aided by good calculations of a heat transfer model with appropriate heat transfer parameters. Air flow meters may be warranted, at least during the model validation process. Examination of the respective test set ups after the testing should confirm the expected heat transfer parameters, including the thermal conductivity of the alumina tube, that were used in the model. If the alumina loses its insulation property because of the fuel loading at any given temperature, it would be expected that temperatures at the outer surface would go up if conductivity went up. Finally, testing at each power level should be held long enough to reach a thermal equilibrium condition--no temperature changes for a time period--say 5 times the time period of the power increase. The control test which is not expected to incur material changes, should be cooled and retested under the same test schedule to confirm it is repeatable with no material property changes. The fuel-loaded test should include multiple tests with only small variations in the quantity of the fuel loading. A minor deminimus loading should produce the same result as a control test. As I previously suggested to Jack Cole, it may be easier to control the LENR reaction with a smaller more diffuse fuel loading. Bob ----- Original Message ----- From: David Roberson To: [email protected] Sent: Friday, March 20, 2015 7:58 AM Subject: Re: [Vo]:Am I the only one.. That would ensure that the induced current within the coils was very close. If the induction heater operates at 60 hertz then you are going to have a very hard time getting enough current to flow inside the coils. This is because the resistance of the wires is far, far greater than what is observed within a metal pan. I don't think your plan will work unless RF is used for the source power. Of course you will have to consider the direct heating of the fuel due to the changing magnetic field. Recall that one of the Russian companies that the MFMP guy visited is using induction heating that is only applied to the fuel plus without any other coils. Why not use the normal easy to measure systems? Dave -----Original Message----- From: Jones Beene <[email protected]> To: vortex-l <[email protected]> Sent: Fri, Mar 20, 2015 10:48 am Subject: RE: [Vo]:Am I the only one.. Matter of fact, the windings of the two tubes to be tested can be cross-connected as one circuit so that induced power is identical * Start with an 1800 watt induction “hob” or hot plate - $70 from Amazon. http://www.amazon.com/Rosewill-1800-Watt-Induction-Stainless-RHAI-13001/dp/B 00GTZMHOW/ref=sr_1_2?ie=UTF8&qid=1426860024&sr=8-2&keywords=induction+cooker * Use Kanthal windings on both tubes - of identical length and turns. Current is induced into the Kanthal wire by the hob. Then test the two samples in different orientations, but always side by side on the hob so as to eliminate the complaint that induction coupling is not the same for both.
