کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
215441 | 1426244 | 2014 | 8 صفحه PDF | دانلود رایگان |
• Viscosities for squalane from (293.15 to 363.15) K and up to 350 MPa are provided.
• Four falling-body viscometers and a quartz crystal resonator viscometer were used.
• A new VFT equation describes the viscosities with AAD of 1.5% and MaxD of 8.9%.
• The validity of a thermodynamic scaling model was verified.
Squalane is being recommended as a secondary reference material for viscometry at moderate to high pressure and at moderate viscosity. As part of this work, a correlation has been developed for atmospheric pressure (Comuñas et al., 2013) [12]. Here we report new experimental high pressure viscosities for squalane (176 data points obtained for temperatures (293.15 to 363.15) K, at pressures up to 350 MPa with a maximum viscosity of 745 mPa · s). These have been determined with four different falling-body viscometers as well as a quartz crystal resonator viscometer. A preliminary high pressure viscosity correlation for squalane is proposed, based on our new data. At pressures up to 350 MPa, this correlation provides an absolute average deviation of 1.5% with a maximum absolute deviation of 8.9%. Comparison is made between the different instruments. In addition, we have also considered the validity of a thermodynamic scaling model.
Journal: The Journal of Chemical Thermodynamics - Volume 69, February 2014, Pages 201–208