High-Pressure Soybean Oil Biodiesel Density: Experimental Measurements, Correlation by Tait Equation, and Perturbed Chain SAFT (PC-SAFT) Modeling

2019 ◽  
Vol 64 (9) ◽  
pp. 3994-4004 ◽  
Author(s):  
Rachid Aitbelale ◽  
Younes Chhiti ◽  
Fatima Ezzahrae M’hamdi Alaoui ◽  
Abdelaziz Sahib Eddine ◽  
Natalia Muñoz Rujas ◽  
...  
Keyword(s):  
High Pressure ◽  
Soybean Oil ◽  
Experimental Measurements ◽  
Tait Equation

scholarly journals Pulsed Supersonic Beams from High Pressure Source: Simulation Results and Experimental Measurements

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
U. Even
Keyword(s):  
High Pressure ◽  
High Vacuum ◽  
Experimental Measurements ◽  
Pressure Source ◽  
High Repetition ◽  
Supersonic Beams ◽  
Shaped Nozzle ◽  
Simulation Results ◽  
Fast Acting ◽  
High Vacuum Environment

Pulsed beams, originating from a high pressure, fast acting valve equipped with a shaped nozzle, can now be generated at high repetition rates and with moderate vacuum pumping speeds. The high intensity beams are discussed, together with the skimmer requirements that must be met in order to propagate the skimmed beams in a high-vacuum environment without significant disruption of the beam or substantial increases in beam temperature.

High-Pressure Pipelines Repaired by Steel Sleeve and Epoxy Composition

2013 ◽  
Vol 486 ◽  
pp. 181-188 ◽  
Author(s):  
Pavol Novák ◽  
Milan Žmindák ◽  
Zoran Pelagić
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
High Pressure ◽  
Material Properties ◽  
Welded Joint ◽  
Experimental Measurements ◽  
Filling Material ◽  
Epoxy Composition ◽  
State Of Stress ◽  
Steel Sleeve

The aim of this paper is first to determine the state of stress of welded joint repaired by steel sleeve and epoxy composition. Experimental measurements are performed on samples to determine required material properties. The structural analysis by finite element method (FEM) is performed for a pressurized pipe with insufficiently welded root and installed cold sleeve. Simulated is the case of depressurized pipes that could cause a breach of cohesion between filling material and surface of pipe or sleeve with usage of cohesive finite elements. In the end the sleeve dimensions are optimized with respect to maximum integrity to the repaired sleeve.

Solubility of NaCl in CO2 at high pressure and temperature: First experimental measurements

2007 ◽  
Vol 71 (17) ◽  
pp. 4251-4255 ◽  
Author(s):  
I.V. Zakirov ◽  
N.G. Sretenskaja ◽  
L.Y. Aranovich ◽  
V.A. Volchenkova
Keyword(s):  
High Pressure ◽  
Experimental Measurements ◽  
High Pressure And Temperature

Experimental measurements and kinetic modeling of CH4/O2and CH4/C2H6/O2conversion at high pressure

2008 ◽  
Vol 40 (12) ◽  
pp. 778-807 ◽  
Author(s):  
Christian Lund Rasmussen ◽  
Jon Geest Jakobsen ◽  
Peter Glarborg
Keyword(s):  
High Pressure ◽  
Kinetic Modeling ◽  
Experimental Measurements

Experimental Measurements and Thermodynamic Modeling of CO2Solubility at High Pressure in Model Apple Juices

2010 ◽  
Vol 49 (6) ◽  
pp. 2992-3000 ◽  
Author(s):  
Giovanna Ferrentino ◽  
Diego Barletta ◽  
Francesco Donsì ◽  
Giovanna Ferrari ◽  
Massimo Poletto
Keyword(s):  
High Pressure ◽  
Thermodynamic Modeling ◽  
Experimental Measurements

High-Pressure Viscosity of Soybean-Oil-Based Biodiesel Blends with Ultra-Low-Sulfur Diesel Fuel

2012 ◽  
Vol 26 (11) ◽  
pp. 7023-7036 ◽  
Author(s):  
Andrew M. Duncan ◽  
Noorbahiyah Pavlicek ◽  
Christopher D. Depcik ◽  
Aaron M. Scurto ◽  
Susan M. Stagg-Williams
Keyword(s):  
High Pressure ◽  
Soybean Oil ◽  
Diesel Fuel ◽  
Biodiesel Blends ◽  
Ultra Low Sulfur Diesel ◽  
Low Sulfur

Revisiting the Compressibility of Oil/Refrigerant Lubricants

2016 ◽  
Vol 139 (2) ◽  
Author(s):  
Scott Bair ◽  
Mark Baker ◽  
David M. Pallister
Keyword(s):  
High Pressure ◽  
Equation Of State ◽  
Master Curve ◽  
Pressure Measurements ◽  
Tait Equation ◽  
Tait Equation Of State ◽  
Metal Bellows ◽  
Volume Compression ◽  
Volumetric Behavior ◽  
Usual Problem

A fixture was fabricated for the purpose of restraining the expansion of an existing metal bellows piezometer so that a refrigerant and oil mixture can be admitted under pressure. Measurements on a polyol ester (POE) with 9.2 wt.% of R134a show that the addition of refrigerant slightly increases compressibility. The previously reported reduction in compressibility (increase in bulk modulus) by Tuomas and Isaksson (2006, “Compressibility of Oil/Refrigerant Lubricants in Elasto-Hydrodynamic Contacts,” ASME J. Tribol., 128(1), pp. 218–220) of an ISO 68 POE when mixed with R134a cannot be supported by precise measurements of the volume compression. The increased compressibility found by Comuñas and co-workers (2002, “High-Pressure Volumetric Behavior of x 1, 1, 1, 2-Tetrafluoroethane + (1 − x) 2, 5, 8, 11, 14-Pentaoxapentadecane (TEGDME) Mixtures,” J. Chem. Eng. Data, 47(2), pp. 233–238) is the correct trend. The Tait equation of state (EoS) has been fitted to the data for both the neat POE and its 9.2% by weight mixture with refrigerant. The usual problem was encountered for the mixture with the Tait EoS at low pressure where the compressibility becomes greater than predicted due to proximity to the vapor dome. The measured relative volumes of the mixture can be used to collapse the viscosity to a master curve when plotted against the Ashurst–Hoover thermodynamic scaling parameter. The thermodynamic scaling interaction parameter is approximately the same as for the neat oil.

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