The magnetic coupling of the induction system is too variable and can not be proven to be equal between the two tubes. The original plan to use normal AC or DC heating is accurate and would be better in my opinion. It is easy to get accurate measurements of input power when a drive source such as a variac is used for the input, so why not use one or a pair? Any temperature delta between identical devices with identical drive and environmental controls would indicate excess power was generated provided the temperature is elevated in the correct one. :-)
You would not be able to prove the exact value of COP, but at least you would know that it is greater than unity. Dave -----Original Message----- From: Jones Beene <[email protected]> To: vortex-l <[email protected]> Sent: Fri, Mar 20, 2015 10:17 am Subject: RE: [Vo]:Am I the only one.. Vorticians, Here is an inexpensive and rather visually impressive way for anyone to do an *additional* side-by-side comparison of two filed tubes. The two filled comparison tubes are otherwise identical but one is loaded with a hydrogen source and the other is a control with no hydrogen. This can be done with NO need for power supply balancing --- and since this is a comparison sampling, instead of absolute measurement, an IR temperature gun will suffice to avoid the issue of thermocouple placement so long as hundred of data points are collected. Caveat: since lithium could be the most active ingredient, with or without hydrogen, this comparison requires at least 4 permutations to make a thorough evaluation. This is a variation of a technique which Jack Cole and I were discussing. It is not meant to supplant calorimetry or thermometry - but to provide a second way to validate prior conclusions which were derived from either of those tests. 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/B00GTZMHOW/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. This way the input power balancing is moot – assuming that both comparison tube have the same number of turns of Kanthal. The importance is this: no one is satisfied with thermometry and no one is satisfied with some types of calorimetry, but if both of them are done and at the same time – side-by-side testing confirms the active tube always gets hotter than the control – then: what we have is an accumulation of tests, such that the weight of evidence – when all of these are in agreement is more than the sum of the individual test. Jones
