j9381 Member

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  • from Boston
  • Member since Feb 19th 2019
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  • j9381

    Post
    I've had good luck with these KF valves:

    https://www.idealvac.com/Ideal…ws-Angle-Valve/pp/P103784

    $261 for a 25 mm KF flange, 90 degree angle valve ($299 for a straight inline valve)
    and the full rebuild kit is about $150 (I have not had to rebuild the…

  • j9381

    Post
    I'm using the following grit size conversion chart for the sandpaper for use on the nickel mesh in my Mizuno replication experiment.

    http://www.hocktools.com/temp/15hGritChart.pdf

    Mizuno lists this in the supplemental:
    Silicon Carbide Wet-Dry Abrasive:…

  • j9381

    Post
    (Quote from magicsound)

    right ... you are basically saying that Mizuno's COP (coefficient of performance) is a function of the effectiveness of the thermal insulation of the vessel itself. A vessel that is thin and tall with a thin stainless steel wall…

  • j9381

    Post
    In my Mizuno replication experiment, I calibrate the vessel using the average of eight thermocouples on the outside of the 4.5" OD vessel (secured with pipe clamps). I determine the heat transfer coefficient K for a given gas at different pressures and…