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Peng Robinson Fluid Package

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#1 chetanhm2


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Posted 06 July 2020 - 10:56 AM



For PEtrochemical Plant, what is the range for temp/pressures uptill which PEng Robinson fluid package is valid ? like upto how much pressures and temps ranges ?



Chetan Chavan 

#2 PaoloPemi


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Posted 06 July 2020 - 12:02 PM

there is not a specific limit, the alpha function in Peng Robinson standard (not the different, extended, derivations) can return decent values on gas phase for Tr > 20, for liquid phase it is not very accurate, many extensions (as volume translation etc.) are available, see The Properties of Gases and Liquids or similar books for a detailed discussion

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