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Recent content by zpiderman

  1. zpiderman

    [b]Jacketed pipe vs. ControTrace[/b]

    Thanks Perdog, There are many products that I will be using this with, but they're all of a wax nature (with melting points up to 400F). The traced (or jacketed) pipe will transfer the molten product (using gravity) from a heated reactor to a flaking machine, so the need to keep this product...
  2. zpiderman

    [b]Jacketed pipe vs. ControTrace[/b]

    I need to keep molten material in a pipe liquid (and sometimes melt it out of the pipe) using thermal oil at 500F. I'm considering a jacketed pipe for this application but I've also been looking at a ControTrace pipe tracing system (rectagular tubing cemented to the side of the process pipe)...
  3. zpiderman

    Thermal conductivity of extra deep draw steel

    The problem is that I don't have any data on e-coat. Is there an industry standard in e-coating? Z
  4. zpiderman

    Thermal conductivity of extra deep draw steel

    If there is some sort of coating on the steel (i.e. e-coating), would that not change the overall thermal conductivity of the whole piece? I have an oil pan and I want to add a vibration damper on it. To protect the vibration damper from thermal degradation, I need to add insulation between...
  5. zpiderman

    Thermal conductivity of extra deep draw steel

    Hi, I'm looking for the thermal conductivity constant for "e-coated extra deep draw steel". Is there an internet source for thermal conductivity constants? Can anyone tell me what e-coated means? Any information would be very much appreciated. Thanks, Z
  6. zpiderman

    Wood Floor Loading

    Unfortunately this is the third floor of a four floor building. The only way to reinforce the floor is to redirect the load to the existing footings through the wall and columns.
  7. zpiderman

    Wood Floor Loading

    I have a wood floor with wood beam support (floor is 13'W x 31'-6"L). The beams are 10-1/2" x 2-1/2", span 13' and are 25-1/2" apart. On one end the beams are supported by the main building wall and on the other they're supported by an S12 x 35.0 I-Beam running the length of the floor (and...
  8. zpiderman

    Asbestos alternative

    What kind of metal mesh/screen? Would that block flames from passing through?
  9. zpiderman

    Asbestos alternative

    The product we grind is Aluminum Stearate. The curtains would block the fireball (which lasts barely 1 second) from spreading and igniting something else.
  10. zpiderman

    GRP fan

    In the process of sizing a dust collection system for a chemical process, it has been suggested to me to use a fan with GRP wheel/blades. What is GRP? Has it been used in industrial applications for long? What is it's chemical resistance (process uses Caustic Soda)?
  11. zpiderman

    Belt vs. Chain drive

    I am currently fitting a horizontal blender with a 60HP motor and gearbox. The output of the gearbox is 120 RPM and the blender will be approx. 25 RPM. I have 2 options to drive the blender: Option 1: Sprockets (39.4" dia (60 teeth) & 9.3" dia (13 teeth)) and Chain (#160) Option 2...
  12. zpiderman

    Asbestos alternative

    We have Asbestos curtains, surrounding a grinder, used as a fire shield in the rare event of an explosion (it's happened once in the last 20 years). I would like to replace these curtains with non-asbestos material. What material can I make these curtains from without loosing the fire...
  13. zpiderman

    Variable speed DC Motors

    I have a Woods VFD for a 2 HP DC motor: Model J200 Ultracon SCR control for 2HP motors Power supply: 230V, 1 ph, 50/60 Hz FLA: Input AC RMS 19, Output DC Avg. 11.2 Field: 200V, Armature: 185V This drive has an RPM indicator but no Tachometer probe. Question #1: How does it read the RPM...
  14. zpiderman

    Active Noise Cancellation

    Can anyone tell me about active noise cancellation? I would like to eliminate (or at least reduce) the noise from a pneumatic conveyor exhaust. Can this be done with current active noise cancellation technology? If so, where can I find it?
  15. zpiderman

    Heat load estimate

    We bought an old Thermolator heat exchanger. The name plate gives the following information: Model# SMO 1810 Serial# 33-0351 Power 220 Amp. 35 Ph. 3 Control 110 Cycle 60 Wiring print: 124A-1 Thermolator Co. Division of Van Dorn Co. Indianapolis, Ind. It's basically an electric heat...

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