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as said by others, with simplified models you can combine Raoult's law (partial vapor pressure of each component is equal to the vapour pressure of the pure component multiplied by its mole fraction in the mixture) or p1 = Vp1*x1 ; p2 = Vp2*x2 ... and so on, with Dalton's law (total pressure is...

I am not sure to understand the point, for mixtures you cannot convert liquid to gas (evaporation) or gas to liquid (condensation) without setting different operating conditions, see my previous post, for example given the equilibrium temperature, 20 C according your last post, you can solve a...

assuming pout << 0.5 * Pin the formula is that for critical flow, yes, mass flow depends from density with (probably) a initial high value.

the question is not clear, std. ideal liq. volumes or std. volumes ? I assume you wish to convert from (gas) normal conditions to std, correct ? why do you think to use a simulator for a problem which can be easily solved by hand (or in Excel) with a simple conversion factor (normal volumes =...

thanks all for sharing knowledge on these topics.

thanks for the comment, yes I am interested to compare the two (32 and 64 bits) versions.

thanks, we have PRODE Base License (not including Pipelines), Mark

we have many procedures in Excel 2007 (32 bit), company is moving to Windows 64 bit with Excel 64, we use Prode Properties which is available (for Windows) in 32 and 64 bit versions, however I have to modify several pages since Excel 32 and 64 require different declarations, my question is...

thanks for the contribute

I have collected some good data from GPA, you may consider that source. I agree that Cubic Plus Association is very good for natural gas applications, it gives accurate results for hydrocarbons, water, glycols, alcohols, amines etc. I think Prode does a good job including this model in the free...

why do not put the crude sample in a closed bottle, remove incondensables (for example by displacing all initial air) control the temperature (electric bath or equivalent system) and measure the pressure in the bottle ? There are specific (and quite complex) measurement apparatus for both TVP...

thanks Paolopemi & 25362, I need to calculate density and bulk modulus at different temperatures and pressures so your suggestions have been appreciated.

PaoloPemi, is the bulk modulus = 1/(7.53922E-10) Pa ? I have values about 1.4×10E9 Pa which is not much different

how can I calculate bulk modulus and density of water at 194 C 180 Bar ? From my papers I get a density of about 880 Kg/m3 but I would need an accurate value