Robert: Thank you for taking time to do some calcs on the hydrogen pressure inside after ignition... Another interesting tidbit I noticed when investigating the specific heat of the rubber hose vs other materials (including cast iron which Joshua Cude was using as a comparison), I sorted the table of material properties on the specific heat column and guess what had the highest specific heat? Hydrogen as a gas. (this was from wikipedia on Heat Capacity) Water = 4.18J/g.K H gas @ 25C = 14.3 J/g.K
-Mark _____ From: Robert Leguillon [mailto:robert.leguil...@hotmail.com] Sent: Wednesday, June 29, 2011 9:54 PM To: vortex-l@eskimo.com Subject: [Vo]:[Vo] : eCat Power Limitations Assuming the eCat is not a scam: The Defkalion press conference video indeed says that the eCat power is limited by pressure. We know that the reaction chamber is controlled by - quantity of nickel powder, presence of hydrogen, and requires a sufficient heat to "ignite" the reaction. Saying that pressure is the deciding factor, I can only assume that this is pressure of the hydrogen at operating temperatures. Rossi's patent application states that Hydrogen pressure should be 2-20 bars, and ignition temperature will be 150-500C. Assuming that we carry through using the experimental figures, Hydrogen was introduced at 4 atmospheres (101.325 kpa). With a room temperature of approx 30C (303.15 kelvin), we can estimate final pressure using Gay-Lussac's Law. Worst case scenario of 500C (773.15 kelvin) chamber temperature at peak operation, pressure rapidly rises to 150 psi. If higher hydrogen pressures or higher temperatures are necessary to produce higher-powered eCats, the simple stainless-steel cylinders currently in use may be apt to fail. I hadn't considered reactor pressure, and I thought that I'd chime in with some food-for-thought. It's great to hear that a real R&D contract has actually been confirmed with UNIBO, and now we can just ponder and wait. R. Leguillon
