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  1. cdrras

    LabView: BiSection Method

    Is there a function in LabView or a known subVI that can solve an equation for roots using the BiSection Method? For example, I have an equation: lambda*e**(lambda**2)*erf(lambda) - (Cp*(TL-TM))/(L*sqrt(pi))=0 where: erf(lambda), Cp, TL, TM, and L are known constant values that are designated...
  2. cdrras

    GC Calibration Standards Vendor

    Does anybody know of a couple of vendors that sells GC calibration standards or gas cylinders with reagents of suitable purity? The gases I am currently looking for are: 1. Hydrogen 2. Carbon Dioxide 3. Carbon Monoxide 4. Methane If possible, I'm looking for a QT cylinder size (US DOT Spec...
  3. cdrras

    Looking for a Material

    Thanks for the input unlesyd. I was in the process of looking at Ferguson Metals. So far, they are the only ones I've really had much luck with. The problems I've been coming in contact with is I'd find a material that would either meet all but one of the criteria OR I'd find something but...
  4. cdrras

    Looking for a Material

    The Hastelloy X housing chamber has already been fabricated. It's rough dimensions are about 14.5" x 14.5" x 0.25". As you can see, it weighs a pretty penny. Inside this housing will hold a steam reformer which is also fabricated out of Hastelloy X. The reformer itself..will be pushing to about...
  5. cdrras

    Looking for a Material

    I am currently designing an exhaust manifold/duct to be used to capture a reformate and I am running into problems locating a suitable material for fabrication. I need a material that meets the following criteria: 1. Lightweight - I need a material that is considered lightweight because the...
  6. cdrras

    Distillation Column Simulation Software

    Thanks for the input. It was a toss up between putting it here or in the Chem E section. Because this is for a fluid designed system and simulation, I felt the design was more of a MechE application rather than a Chem E. I'll try posting it in the other forum to see if I get any other...
  7. cdrras

    Distillation Column Simulation Software

    Thanks for the info. I'll definitely look into it. I work at the Air Force Research Laboratory, os I'm sure the monetary value won't be much of a problem. Again, thanks for the info.
  8. cdrras

    Distillation Column Simulation Software

    I was wondering if there was any software out there that can help cut down the iterative process of the Fenske-Underwood-Gilliland equations/correlations to estimate the key parameters in a distillation coumn or possibly any other software that may be helpful in distillation design and simulation?
  9. cdrras

    Particle Size

    Thanks for the very helpful information. I am trying to simulate a mist that will be a part of a small test for a mist elimination pad used in a gas-liquid separator. I don't have a particle analyzer so I was at least trying to get an idea on the particle size by comparing it to various...
  10. cdrras

    Particle Size

    Ok, this is a stab in the dark. Does anybody know the typical droplet size of generic spray bottles or those pump sprays (like found in hair product stuff or perfume)? I'm trying to find something out there that could simulate in the 1-20 micron range, but something tells me a spray bottle's...
  11. cdrras

    Custom Mist Eliminators

    Thanks. I contacted a company in PA and they have sent me a mist eliminator for me to test for my application. Since it's a fairly new product they'd like to collect some data on it. I'll like to collect some data as well regarding the water particle size that coalesces on the pad to help...
  12. cdrras

    Sneddon's equation

    Do you have an application or reasoning behind your enquiry? I say this only because every equation has multiple principles and can be used in several different cases. If you can narrow things down a bit, someone might be able to point you in the right direction and be able to find you...
  13. cdrras

    Custom Mist Eliminators

    Yeah, I thought I said I was looking for a mesh pad style in my original post, but I guess that was something that just slipped my mind. Sorry about that. Thanks for the links. I'm waiting to hear back from a couple of places. Hopefully they can do what I am hoping.
  14. cdrras

    Custom Mist Elimination Pads

    The temperature of my streams is only 35 Celsius for both the inlet and outlets. I'll look into these places you suggested, and hopefully they do custom designs. The places that I have found so far that DO custom design, primarily do it for large scale industrial applications. The dimensions I...
  15. cdrras

    Custom Mist Eliminators

    Thanks. I'll look into these. The dimensions I am looking for are 3.25" in diameter and about 4.00" in depth. Looking for possibly aluminum or stainless steel due to small possible corrosion.
  16. cdrras

    Custom Mist Eliminators

    I currently am designing a gas-liquid separator and I'm trying to find a manufacturer that specializes in custom mist eliminators. Because my separator is very size constrained due to the application it will be used for, the dimensions for the separator are roughly 3.25" ID diameter and roughly...
  17. cdrras

    Custom made Mist Elimination pads

    I currently am designing a gas-liquid separator and I'm trying to find a manufacturer that specializes in custom mist eliminators. Because my separator is very size constrained due to the application it will be used for, the dimensions for the separator are roughly 3.25" ID diameter and roughly...
  18. cdrras

    Custom Mist Elimination Pads

    I currently am designing a gas-liquid separator and I'm trying to find a manufacturer that specializes in custom mist eliminators. Because my separator is very size constrained due to the application it will be used for, the dimensions for the separator are roughly 3.25" ID diameter and roughly...
  19. cdrras

    Vacuum Formed Ceramic Fiber Radiant Heater

    Ok, I have a question that I am hoping someone out there can answer. I am a fairly new engineer and I am in the process of using a VFCFRH (for short) in junction with a new catalyst to raise it up to 500 Deg. C. (Don't ask me why, because the reason keeps changing). Anywho.... I have an E...
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