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  1. dprice

    Air Lift Pump

    That is a problem that I have in my files, but it will take some time to dig out. I think you might be able to find this in a mineral processing book. Good luck!! I am rather slammed dPrice
  2. dprice

    Centrifugal pump selection for dissolved gases on stream

    I believe you need a type of positive displacement pumps to handle the fluid you want. Depending on the flow rate several are available. For low flows consider a diaphram pump. For higher flows you might consider a pressure pump. Several options more information about the system and I...
  3. dprice

    Wheatstone Bridge Flow Meter

    Whetstone bridge is a reference to a resistance circuit not specifically a reference to a flow measurement device. Many flow measurement devices make use of whetstone bridge measurements. However I think if your reference is to measure flow of air, I think the reference may be to a hot wire...
  4. dprice

    what to use for thermal insulator??

    At the temperatures you propose I think the radiant effects will control. YOU can estimate radiant transfer by using an equation. I do think the project engineer is on the correct path. The ceramic should provide a radiative shield and thermal insulation. Being easy to machine is a good feature...
  5. dprice

    TURBINE SHAFT SPEED?

    Steam turbine speed is not to the first approximation a function of the inlet pressure. The turbine speed is set by the grid frequency and is a statement in your problem. YOu must be attempting to find some other parameter.
  6. dprice

    Cryogenics

    The liquid does not transfer to the vacuume space in a properly welded tank. However if you have bad welds (porosity) then you can have problems. Proper Quality control and welding systems design for welding in Dewars in very important. I do not know about your question regarding Barium and...
  7. dprice

    Welded Pipe Patches

    Sorry I missed part of the intended thrust of your question. I have used the standards above in analysis of systems, but they do not provide a detailed proscription like what you asked for. The standards are in my view are necessary to consider when determining whether a particular repair should...
  8. dprice

    Welded Pipe Patches

    When working for a manufacturer of piping components we at times made standard forms and instructions regarding pressure vessel components based on calculations. This allowed the "designers" to proceed with a design. The engineer responsible signed off on the design to verify the table...
  9. dprice

    Caustic piping

    If your flow rates are small, I am not familiar with such a design practice. Typical minimum size industrially is 2" or 3" for the heat loss reasons. You must be careful about freezing the liquid, and pumping losses. These can be handled through appropriate tracing etc. Regards, dprice
  10. dprice

    Design liquid eductor

    I suggest you look at Penberthy catalog. There are other manufacturer's as well. I think you can also find some information in handbooks. The motive power part is easy, theoretically. Calculate the velocity of the fluid in the nozzle from the pumping rate and get do a velocity balance. The only...
  11. dprice

    Mag Drive Motors???!?!?!

    Or you could be looking for a sealed pump. Like that used in refrigeration, where the motor is cooled by the fluid.
  12. dprice

    How to design a fresh water piping manifold

    More information is needed. You need a careful and comprehensive look at the details. It would seem the existing manifold may be too small with this large increase in flow. I am curious about the details you have provided, I cannot conceptualize dividing such a small manifold into both suction...
  13. dprice

    Getting Rid of Foam in a Clarifier

    You can spray water on some foams and help to break them. That is if you do not agitate when spraying. Otherwise you might call one of the vendors of clarifiers and ask for recommendations.
  14. dprice

    Vane material

    Typical materials for oxygen service (cryogenic) are 304SS, and brass. I would be concerned that the graphite could combust in pure oxygen at those temperatures.<br><br>
  15. dprice

    Shear Moduouls of Elasticity

    <br> The rubber formulations for couplings can vary quite alot by design. I recommend contacting the manufacturer for information.
  16. dprice

    SCISSOR LIFT DESIGN

    I do not know of a reference but I have worked with a couple and could answer specific questions.<br> <br> Regards.<br> <br> dprice
  17. dprice

    What Furnace Volume do I need?

    <br> Your reversing flame in the morrison tube is a curiousity to me. I am not familiar with this method here in the U.S.<br> <br> The flame size you intend on putting into the pot is larger than I would recomend considering. You can derate the oil burner a bit as it will be more efficient than...
  18. dprice

    Differences btn DI and Distilled water

    Distilled water is that water which is produced by distillation (boiling and re-condensation). <br> <br> <br> When you boil water salts are carried over to the condenser. This results in impurities in the water. These fractionation rates are species dependent and equipment dependent so the...
  19. dprice

    Pneumatic Conveying -High P. Low V.

    <br> I presume with the problem statement development that you are in the conceptual phase of your project. If you are in the detailed phase I would need considerable more information to provide a sizing.<br> <br> The air ratio is determined by whether economics dictate dense or dilute phase...
  20. dprice

    Hydraulic press safety valve

    I do not like changing your question,but you might want to consider re-directing your thoughts.<br> <br> I do not know of a hydraulic valve with the feedback you desire. I am however familiar with making the systems mechanically safe. I have seen locking pins, or manual 1/4 turn valves to drain...

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