Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: dramarc
  • Content: Threads
  • Order by date
  1. dramarc

    EU Imported high pressure machinery what directives apply in Texas?

    Ladies and gentlemen, We're looking into importing an European high pressure machinery for Nitrogen and carbon dioxide for use in medical/pharma industry. The machines are CE approved for the European market but could these machines be used in Texas without modifications? As far as I know the...
  2. dramarc

    CO2 evaporation from a tank simulation in excel (dynamic)

    Hi, I'm trying to make a dynamic (time dependent) model in excel of The pressure and temperature (liquid phase) in a tank during a constant volume gas outtake and a constant heat flow into the tank. At t0 the tank contains both liquid CO2 and gaseous CO2. Temp=10 deg C and pressure 51 Bar (1) At...
  3. dramarc

    implications of choked flow, supersonic velocities

    Dear all, I've read numerous posts where choked flow and supersonic velocities are discussed. Although, What I can't find is any information on is WHAT PRACTICAL IMPLICATIONS AND the magnitude of problems this may cause (chock waves, noise etc)? In a case where there are two reservoirs for...
  4. dramarc

    Energy consumption distillation - rule of thumb?

    Is there a simplifyed formula that can be used to esitmate the energy consumption of distillation of a binary mixture? Maybe a factor times the heat of vaporization? Looking forward to your answers Merry X-mas
  5. dramarc

    Constuction of simple mist elimination unit

    Hi, We have a problem with salted water/organic solvent in a inert gas stream. The mist most be eliminated prior to the compressor. We've a gas flow rate of max 230 liters/minute and to start of simple we would like to pass it though a vertical pipe (inside diameter of 80mm) containing a...
  6. dramarc

    vaccum pumping+bernoulli's eq

    In laboratories, there is a common “vacuum suction” thing (looks like a “T” working on the principle that tap water moving past a junction (T-junction) don’t know the name for it) will case a low pressure due to the high velocity (Bernoulli’s eq). This I can understand intuitionally, but with...
  7. dramarc

    multi variate question (DOE)!

    Hi! I received a large quantity of data from one of my students. The variables (factors) are the final concentration in a bulk solution. Components A or B are mixed with different ratios of x or y or z... Water is also used 0 or 0,1% A and B are present at 0,4 or 0,8 % when added into the bulk...
  8. dramarc

    stresses on bolts

    IN a thick walled cylindical reactor subjec to an internal pressure, a flat lid will be attached with 8 bolts. I would like to calculate the stresses/Strains in the shell, especially radially outside the bolts in the shell in order to understand where to place the bolts and how much shell wall...
  9. dramarc

    required material around bolts

    Hi! In a cylindrical reactor with a inside diamter of 100mm with wall thickness of 35 mm a flat lid 40 mm thick will attached by 8 bolts,each 10 mm diamter. The bolts will be screwed into the shell wall. The construction in stainless steel. How many mm of material (Shell wall) is required...
  10. dramarc

    slip/non-slip boundaries

    what is slip/non-slip boundary conditions?
  11. dramarc

    high pressure reactor problem

    Hi! I´m currently calculation of the dimensions of a small (inside diameter 100 mm, height 200 mm)) cylindrical lab reactor with a flat head closure (like a blind flange with bolts). THe working pressure is 120 bars. The flat head blind fange type of closure have three approx 10 mm round...

Part and Inventory Search