The tube looks a little bent to me. Did the heat of melting come from the inside out or the outside in?
On Tue, Mar 17, 2015 at 5:38 PM, Jack Cole <jcol...@gmail.com> wrote: > Taking another look, I'm not certain melting didn't happen in the tube. > There is a color difference along the inner edge. The metal coating may > obscure the alumina making it difficult to determine melting without a > microscope. > > > http://www.lenr-coldfusion.com/wp-content/uploads/2015/03/meltedtubeinner.png > > Also note this picture. The color difference and ridge corresponds to > where the resistance wire was on the outside of the cell. > > http://www.lenr-coldfusion.com/wp-content/uploads/2015/03/melted2.png > > > > On Tue, Mar 17, 2015 at 3:56 PM, Axil Axil <janap...@gmail.com> wrote: > >> According to Jack, the reaction did not happen in the fuel, but in the >> insolating layer. The fuel composition does not matter. IMHP, what matters >> is the exact nature of the heater current. >> >> On Tue, Mar 17, 2015 at 4:38 PM, Robert Ellefson <vortex-h...@e2ke.com> >> wrote: >> >>> Jack, >>> >>> >>> >>> Fantastic! I’m really stoked to hear of your progress. I think your >>> powder recipe sounds very interesting, and I would love to know more about >>> the details of the reactants. It sounds like you’ve come up with a mixture >>> which may contain one or more key ingredients not yet identified as being >>> of primary significance to the high-gain modes of these systems. >>> >>> >>> >>> If I may fire away: >>> >>> What size Fe2O3 and TiH2 grains were present? >>> >>> Is this mixture generally not hygroscopic, and therefore is curing the >>> reactor’s sealant a simple matter as compared to LAH? >>> Are you tumbling or milling these reactants, or performing any other >>> notable processing steps, prior to putting them into the reactors? >>> >>> >>> >>> Thanks for sharing, and keep up the great work! >>> >>> >>> >>> -Bob >>> >>> >>> >>> >>> >>> *From:* Jack Cole [mailto:jcol...@gmail.com] >>> *Sent:* Tuesday, March 17, 2015 1:08 PM >>> *To:* vortex-l@eskimo.com >>> >>> *Subject:* Re: [Vo]:melted alumina tube >>> >>> >>> >>> Bob, >>> >>> >>> >>> The input power was ~260W. I don't know what the R value of the >>> insulation is. I had the cell surrounded by high purity alumina powder and >>> covered with a thin sheet of ceramic insulation. I used standard 120V AC >>> 60hz with a triac type dimmer switch (chops the waves starting at V=0). >>> I'll have to check with the manufacturer to see what the remaining 5% of >>> the tube is. The heating element was Kanthal A1. It's strange that the >>> heating element was able to completely melt at points. In the past, it has >>> always failed before melting. >>> >>> >>> >>> I was using INCO type 255 nickel, TiH2, LiOh, KOH, aluminum powder, and >>> Fe2O3. Good idea on the small amount of fuel which should cause some >>> localized melting. >>> >>> >>> >>> The fact that the fuel was a small diameter cylinder seems to suggest >>> that it was fully expanded in the tube and shrunk down. >>> >>> >>> >>> Jack >>> >>> >>> >>> >>> >>> On Tue, Mar 17, 2015 at 2:02 PM, Bob Cook <frobertc...@hotmail.com> >>> wrote: >>> >>> Jack-- >>> >>> >>> >>> It looks like you had a pretty good reaction. >>> >>> >>> >>> What was the input power? What is the R value of the insulation on the >>> outside of the electric coils? What was the nature of the electrical >>> input--frequency etc? And what is the electrical heating element >>> material? If you have an acetylene torch, see if you can melt a piece of >>> the tube that melted. >>> >>> >>> >>> The tube may have had glass fibers incorporated in order to improve >>> strength. You indicated it was 95% pure. What was the other 5%? >>> >>> >>> >>> What was you fuel mixture? You may want to try a small fuel loading and >>> see if the same intense reaction happens--all else the same. >>> >>> >>> >>> Try the test with a iron core instead of a fuel load and determine if >>> there is an apparent magnetic field which would hold the iron core in >>> position when direct current is applied to the heating coil. An >>> alternating current would of course change the magnetic field and may >>> make for null reaction conditions. >>> >>> >>> >>> Try 2 or 3 t/c's if you can--one inside and two outside to get a >>> measure of the temperature gradient along the tube. Also another easy way >>> to determine temperatures is the use of thermal sticks on accessible >>> surfaces. Welders use these to determine preheating temperatures. They >>> may provide a cheap temperature measure for you. >>> >>> >>> >>> Keep it shielded--good luck. >>> >>> >>> >>> Bob >>> >>> ----- Original Message ----- >>> >>> *From:* Jack Cole <jcol...@gmail.com> >>> >>> *To:* vortex-l@eskimo.com >>> >>> *Sent:* Tuesday, March 17, 2015 9:39 AM >>> >>> *Subject:* Re: [Vo]:melted alumina tube >>> >>> >>> >>> To add a couple of more details. The agglomerated piece of material is >>> extremely hard. I tried to break it off with pliers, but it seemed like it >>> would take more force than to break the entire cell. The resistance wire >>> is extremely difficult to separate from the cell. I plan to open the cell >>> with a diamond blade later today to see if more can be learned about what >>> took place (e.g., evidence of melting on the inside of tube). I was able >>> to get one piece of the resistance wire pried from the tube. There were >>> indentations in the cell. >>> >>> >>> >>> As a follow-up experiment, I need to run it without the fuel to the same >>> power levels to see if the same effects occur. >>> >>> >>> >>> On Tue, Mar 17, 2015 at 9:42 AM, Jack Cole <jcol...@gmail.com> wrote: >>> >>> I had an interesting experiment yesterday. This was my first time using >>> a triac to regulate input power and sealing the tube with a compression >>> fitting. Unfortunately, my thermocouple failed. >>> >>> >>> >>> Take a look at the alumina tube and the evidence for melting. The >>> furnace sealant which I coated it with completely melted and agglomerated >>> to the bottom of the cell (also appears to be mixed with melted alumina). >>> >>> >>> >>> >>> http://www.lenr-coldfusion.com/wp-content/uploads/2015/03/IMG_20150317_084823_361.jpg >>> >>> >>> >>> The tube was purchased from China and is purportedly 95% pure. It was >>> supposed to have a continuous operating temperature of 1500C. >>> >>> >>> >>> Any opinions? >>> >>> >>> >>> Jack >>> >>> >>> >>> >>> >>> >>> >>> >>> >> >> >
