Has anyone determined that the high internal pressure claimed by Parkhomov is even possible? Did he claim 500 psi? I cannot find the reference today, but the numbers are probably out there and at first glance score one for AGP.
Btw in a search of Vortex, it turns out Parkhomov was mention by Rothwell way back in 2012: Author: Y. Bazhutov A. Parkhomov et al, Year of Conference: 2012 Title: Investigation of Radiation Effects at Loading Ni, Be and LaNi5 by Hydrogen. Very appropriate. Just in case no one else has done it here are back of envelope calcs rounding off slightly: molar volume of hydrogen gas (assuming ideal gas at 1 atmosphere of pressure) is 24.5 liters (or dm3/mol) at 300 °K, and the weight of a mole is two grams, so this gives 12 cc/mg for H2 at one bar and ambient - or 36 cc/mg at 900 °K elevated temperature. The fuel of Parkhomov was said to be 1/10 gram of LiAlH4 which is about 10% by weight hydrogen. This means that the weight of hydrogen, if none escapes is about 10 milligrams at the start. This means that the expanded gas would occupy about ~120 cc at STP, if released from the hydride - correct? OK. The interior volume of the reactor appears to be about 2.4 cc. so cramming 120 cc into 2.4 means that would require about 50-1 ratio... or 50 bar BUT if the reactor and gas is at 900 °K, then 150 bar or 2,175 pounds per square inch is possible. So the bottom line is yes, even with slight diffusion into the alumina and no leaks, 500 psi is not only possible but on the low side. The important detail is what is the pressure at 10,20,30 hours and so on? Apologies if this has been covered, or is not accurate but a lot of folks seem to second-guessing AGP, at least on a few points, and there appears to be no problem on this one. As of now, in terms of trustworthiness of reported data, based on past work, openness, and freedom from an agenda which would cause one to fudge data or salt the ash to be tested - I would give AGP a much higher ranking than AR. Lets hope we get isotope data. This reaction is nearing the level of understanding. Jones
