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  1. balagast

    Vacuum Pump Ambient Temperature Concern

    Yes after consulting the Installation and Maintenance Manual I found that the LP (low pressure) end bearing do use a fluorinated grease.
  2. balagast

    Vacuum Pump Ambient Temperature Concern

    I am planning on using a Dry Vacuum pump (multi-stage roots type) for a client. The ambient temperature in the operations room I speculate will be very close to the listed maximum ambient temperature for the pump (40 degrees C). What I would like to know is if anyone here has experience...
  3. balagast

    Assembly Views vs Part Views

    Its more of just a convenience thing to be honest. I realize I can change the "front" to be the same, but I would just like to be able to have it the same for parts and assemblies by default.
  4. balagast

    Assembly Views vs Part Views

    I've just gotten back to using Inventor 2011 for modeling some parts and assemblies, and I've run into a rather annoying problem. I like to orient all of my part such that the front of the part is on the front view plane (set to xy (+z)). When I insert the part into an assembly the part...
  5. balagast

    Vacuum Pipeline Conductance

    Sorry, actually the vacuum level will be .078 torr .. that was a typo.
  6. balagast

    Vacuum Pipeline Conductance

    I am trying to size a couple of sorbtion traps for a vacuum pipeline (sieves) and I would like be able to make sure the pipeline will support the required flow level at my desired vacuum level. I know there will be a couple of tees, elbows and the approximate length of pipe. Does anyone have a...
  7. balagast

    Pressure Vessel Heat Loss

    "Maybe I'm looking at this one too simply, but the base formula is Q = m * Cp * deltaT Since you have a know the heat transfer, Q, in Watts, you can assume an average Cp for your material (air) from the reference charts. " I would have to agree with this methodology, assuming the temperature...
  8. balagast

    Synchronizing Spreadsheets

    I shall give that a try ... I didn't even realize Excel had that built in to be honest.
  9. balagast

    Synchronizing Spreadsheets

    I have a large spreadsheet that contains product information that myself and a co-worker are verifying and updating on the sheet. Is there a good way to synchronize the file (or some program that is good for managing excel files) so that the changes the other person makes are updated to the...
  10. balagast

    Steam Pipe Slope

    Why do you want the condensate to drain opposite the direction of the steam flow?
  11. balagast

    Sterilizer Steam Requirement

    Speco, For the case of my steam requirements the H/E's are not doing any condensing until the process is completed, and the exhaust is regulated. The steam is being condensed by the product inside the sterilizer. I think I have this mostly sorted out, because I can approximate the loads...
  12. balagast

    Sterilizer Steam Requirement

    "Wouldn't the manufacturer's installation manual give you the information that you desire?" These are very large units, that are custom made. What I am doing is re-optimizing their system and replacing the cooling system and inlet steam piping. I suspected their steam supply rates were very...
  13. balagast

    Sterilizer Steam Requirement

    This would assume all of the steam is condensed correct? I was unsure I would be able to make that assumption.
  14. balagast

    Sterilizer Steam Requirement

    I have a project where I am sizing the steam inlet piping for steam sterilizers, autoclaves. I know how to get the appropriate diameter piping that I need using the mass flow rate through the pipes and my acceptable line velocity limits. What I am hung up on is accurately calculating the...

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