کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
231853 1427452 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental and PC-SAFT volumetric and phase behavior of carbon dioxide + PAG or POE lubricant systems
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Experimental and PC-SAFT volumetric and phase behavior of carbon dioxide + PAG or POE lubricant systems
چکیده انگلیسی

In this work we have measured densities of a synthetic PAG oil from 283.15 K to 333.15 K and solubilities of CO2 in this oil from 253 K to 333.15 K. Molecular weight of the lubricant was estimated using fast atom bombardment (FAB). Molecular weight and experimental densities were used to calculate characteristic parameters of PC-SAFT model for several commercial PAG oils. Transferable characteristic parameters were used for POEs. Saturated and compressed densities together with the phase behavior (solubility, vapour–liquid equilibria, liquid–liquid equilibria, vapour–liquid–liquid equilibria and miscibility) of CO2-PAG and CO2-POE systems were modelled with PC-SAFT using a kij interaction parameter linear with the temperature. Experimental data have been successfully represented with the present model, which was used to predict the phase diagram type in the mixtures of CO2 with PAG or POE lubricant oils.

Solubilities of CO2 in synthetic PAG oil from 253 K to 333.15 K were measured. Estimated molecular weight and new experimental densities were used to calculate the characteristic parameters of PC-SAFT for several PAGs. Transferable characteristic parameters were used for POEs. Phase and volumetric behavior of CO2-PAG and CO2-POE systems were modelled using a kij interaction parameter linear with the temperature. Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Supercritical Fluids - Volume 47, Issue 1, November 2008, Pages 8–16
نویسندگان
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