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  1. Malimedo

    separator calculation (Ki ratios)

    I don't use simulator, unfortunatelly my antivirus detects a virus in registration tool ?:(. I just made spreadsheet calculation and then guessed nL using solver, ie. I guessed nL until sum of zi was zi=1 I think this method should work, but anyway - the error repeatedly occurs (I have only...
  2. Malimedo

    Which viscosity correlation for low presure system?

    I'd try Carr-Cobayashi-Burrows correlation
  3. Malimedo

    separator calculation (Ki ratios)

    Thanks. So you think such big error occurs with condensates that vaporize very quickly?
  4. Malimedo

    separator calculation (Ki ratios)

    I appologize for not explaining the symbols. xi is the composition of the liquid phase yi is the composition of the vapour phase zi is composition before separation As far as I know, this should be satisfied: sum zi = sum yi = sum xi nL is quantity of the liquid phase, ng is quantity of the...
  5. Malimedo

    separator calculation (Ki ratios)

    sum of xi is 0.8239 I'm not sure if it's correct.
  6. Malimedo

    separator calculation (Ki ratios)

    Hi, I'll be very helpfull to see someones separator calculation in order to obtain liquid and gas composition at desired separator pressure and temperature. I'm getting sum of mole fractions of gas phase=1, but for liquid fraction I get numbers different than 1. I attached my example. Also I...
  7. Malimedo

    Density of CO2 Vapor

    Span, R., Wagner, W: „A new equation of state for carbon dioxide covering the fluid region from the triple-point temperature to 1100K at pressures up to 800MPa“. J. Phys. Chem. Ref. Data 25, (1996.) p.1509–1596. This article above could be helpful. I'm wondering if someone has the simple p-Z...
  8. Malimedo

    Span & Wagner EOS

    Is there any algorithm to calculate CO2 properties using Span & Wagner, ie. steps to implement into VBA (macro) code in MSExcel? Is Span&Wagner EOS applicable to calculate PVT properties of hydrocarbon mixtures with large amount of CO2?
  9. Malimedo

    SPE nomenclature and units vs SI

    Is anywhere available in pdf form table of SPE recomended nomenclature and units, and also, the similar table for SI nomenclature and units. I'm wandering if there is SI and SPE recomendation for nomenclature of Z factor (capital letter or not?!?), but also for some other parameters...
  10. Malimedo

    viscosity calculation

    I'd like to help, but I'm not into chemical engineering, only in PVT and Petroleum Eng. However, maybe It will be interesting to try Vasquez Beggs and similar correlations: http://fekete.com/software/welltest/media/webhelp/c-te-fluidprops.htm...
  11. Malimedo

    Thermodynamics diagram software

    Thanx, that's almost the solution, and the hardest thing was to have this data in the spreadsheet. However, to describe a process (in this case, we need it for air conditioner process) properly, it ould be the best to have classic thermodynamic diagram with all variables at one place. As you...
  12. Malimedo

    Thermodynamics diagram software

    Is there any, if possible freeware, software which could aid in plotting this kind of curves http://www.rgn.hr/~tkurevi/Slike/NH3.jpg from known data (temperature, density, enthalpy, entropy...) that I had in Excel spreadsheet?

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