BobHiggins MFMP

  • Member since Oct 13th 2014
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  • BobHiggins

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    David Fojt
    David, I am considering dead volume and compaction as two separate issues. In general, I control the pressure with a back pressure regulator. I am not closing it off and heating which could cause the pressures to be extreme. The only…
  • BobHiggins

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    StephenC
    I have discussed this issue before - at the core, you have to ask yourself what is the carrier of the LENR energy? If many LENR events occur in a small NAE, and the energy carrier is phonon, then the temperature of the NAE will be the…
  • BobHiggins

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    BobHiggins

    Regarding fuel packing I submitted the following post on ECW in a reply to Bob Greenyer a few weeks ago. I'm certainly no expert but iI seems to make sense to me if I thought it through correctly:

    "I must admit I'm having trouble keeping…
  • BobHiggins

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    StephenC
    Good observation. It deserves experimental evaluation.
  • BobHiggins

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    Mats002
    I am going to fabricate a new tube assembly. I haven't decided if I am going to expand the fuel space to 4" instead of 2" or just use less fuel. If I expand the fuel length I will have to run another calibration, but that is the only…
  • BobHiggins

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    Here is a photo of the inside of the cracked reactor tube end. You can see the fuel molded into there.



    I would guess that the white powder is largely LiO, LiH, or LiOH. It doesn't seem to be rapidly darkening like LAH would in the open air.

    One…
  • BobHiggins

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    Here is the plot of the data in the last day. You can see that the pressure is dead flat - it is atmospheric pressure.



    This is due to the crack allowing all of the H2 to be leaked out. Note - none of the Li or any of the fuel leaked out.
  • BobHiggins

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    David Fojt
    Yes, I have that paper. The biggest issue with SS is not the Li or the hydrogen permeation, it is oxidation at high temperature from the outside. SS may be OK if the outside of the tube is bathed in argon. However, I do not think the…
  • BobHiggins

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    David Fojt
    David, I have not had this problem before with LAH. This problem only occurred when the metallic Li was added. I am going to dissect and look for weakening from the inside. My past experiment plan was to use a SS tube. The SS tube was…
  • BobHiggins

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    I have stopped this experiment. As you know (I think I said), this experiment was a re-heat of the previous experiment's endpoint. What I saw during the first cycle was no significant variation in pressure, which hovered around 10 PSIA. To me, this…
  • BobHiggins

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    David Fojt
    Of course, that can only be done in a future experiment. This experiment is already closed and running - the plane has left the gate.
  • BobHiggins

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    I have just begun a new experiment that will run for about the next 3 days. Data will be stored in the Google drive Experiments folder having the name "Experiment_Cycle_20170609". Here is the programmed profile for the run:



    Aside for looking for…
  • BobHiggins

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    I think I am going to write a script for cycling and start a run with the same fuel this week.
  • BobHiggins

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    Here are some final curves - first a full view, and second a zoom in the high temperature region:

      
  • BobHiggins

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    Mats002
    Two experiments I am considering are: 1) many cycles from 190C - 400C - 190C ... I might even do that without reloading fuel; and 2) an experiment with Ni, Li (no LAH), and a hydrocarbon.

    Happy to hear suggestions with rationale.
  • BobHiggins

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    David Fojt
    I don't think it is necessary to avoid the LAH to limit the pressure, just regulate it (to exhaust) above the desired maximum pressure. If you use LiH instead, you just won't get as much gas. Interestingly, it seems A. Parkhomov's latest…
  • BobHiggins

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    (Quote from David Fojt)

    Hi David. The pressure could get high - to >1000 PSIA if all of the H2 was released from the hydride. However, what really occurs is that as the pressure goes up, and at a given temperature, an equilibrium is reached, and all of…
  • BobHiggins

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    Here is an updated plot (finally!). The data consists of 120k samples (and it is not done), but excel really only wants to have 32k points in the plot for each curve. I had to calculate a sparse data set and make adjustments in some cases because…
  • BobHiggins

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    Have been making these plots in excel and I am having trouble adding more data. That's why it is taking so long to get another plot.
  • BobHiggins

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    Next update in time:



    It is strange how the pressure went to 0 by 600°C, then shot up at 700°C as the LiH and Al melted. Then the pressure rose rapidly and dropped like a rock at 750°C with no other event - the valve has been closed (regulating at…