Unknown. It would be hard to tell without more experiments. On Mar 17, 2015 4:43 PM, "Axil Axil" <janap...@gmail.com> wrote:
> 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 >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>> >>> >> >
