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  • Users: lownox
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  1. lownox

    60hz to 50Hz... and the motor sped up???

    Yesterday, we were testing a filtration unit with a fractional HP PSC motor. Oddly (to me) it is labeled 220V 60Hz. The rated RPM is 1050. So we ran this motor in our unit at the rated voltage using a variac. We were measuring RPM, current, and air flow through our filter as the motor is...
  2. lownox

    Time for TIG welding

    I am hoping someone more skilled than me can help me out. We are manufacturing steam manifold assemblies. The gray area that I am dealing with is TIME. Each of these manifolds is completely unique and custom designed per job. Calculating the time for the shop routings (labor hours) seems...
  3. lownox

    Gasoline Octane Rating

    Is it a fair description of octane rating to say it is relative to the flash point of the fuel? I have read the Wiki(octane rating) on the subject already. I have been having a discussion with a collegue about this and his understanding is that it is related to the flame speed... which I think...
  4. lownox

    Electrically enhanced media filtration

    I am looking for opinions on this situation. As a product development engineer, often times the success of the project depends greatly on how equipped the lab is. For example, if you don't have a multimeter... you probably would do much electrical work. Anyhow, to my scenario... Ashrae...
  5. lownox

    Finned Tube - stainless?

    Does anyone know of a source for stainless steel finned tube? Approximately 1" ID... I am aware of wolverine tube, but it looks like they specialize in mostly copper. This is for a small boiler design that is being conceptualized. Thanks.
  6. lownox

    AL29-4C

    Does anyone know a source for this or equivalent material in China? or anywhere in Asia for that matter? Thanks for any information. To be used in a condensing heat exchanger (natural gas combustion).
  7. lownox

    Steam Humidifier

    My company makes steam humidifers. One design is that of a tank with submerged steam pipes. I would like to get some help with my math please. Assuming the tank is full and boiling (minimal back pressure) and steam is being fed at 5 psi, how can I calculate the amount of output steam I will...

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