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  • Users: RobD7
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  1. RobD7

    Best pump for closed valve conditions?

    Thanks, BigInch. Yes, HydTools, it is for fluids. I like the fixed displacement pump idea. Thanks.
  2. RobD7

    Best pump for closed valve conditions?

    I am designing a control system where there will often be a closed valve downstream of a pump. What type of pump will work best under this condition for long periods of time? I know positive displacement pumps are out of the question, but I'm not sure centrifugal would be the best either. I'm...
  3. RobD7

    Cheap Design Software?

    sspeare, that link is exactly what I was looking for, thank you.
  4. RobD7

    Chemical Engineering Plant Cost Index

    PCI is used in cost estimation for chemical process equipment. The source is July's issue of Chemical Engineering magazine.
  5. RobD7

    Chemical Engineering Plant Cost Index

    596.0 for April 2012
  6. RobD7

    Cheap Design Software?

    Thank you for the links!
  7. RobD7

    Cheap Design Software?

    What are some recommendations on the cheapest or one of the cheaper software licenses for chemical engineering design? I work for a start-up company that does not yet have a license for such software, and I need to design a complex distillation column (5 components, some of which are rarely...
  8. RobD7

    Excel 2003

    If you use VBA, you can just do a count for y=1 to 50 IF cells(1,y)=F AND cells(2,y)=V then x=x+1, display x
  9. RobD7

    Using condensation as a separation mechanism?

    Thanks everyone
  10. RobD7

    Using condensation as a separation mechanism?

    A vapor process stream that I am working on is primarily acetone, with small concentrations (< 5 %wt) of Hexamethyldisilazane (HMDS) and ammonia. Acetone condenses around 57 C and HMDS condenses at 126 C. Is it possible that placing two condensers in series, one to condense HMDS then the second...
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