@article{f41b42a7e4f7463787a9305d8ab9a56f,
title = "High-pressure apparatus for monitoring solid-liquid phase transitions",
abstract = "This work presents a new technique for evaluating the solid-liquid phase transformations in complex diesel fuel blends and diesel surrogates under high-pressure conditions intended to simulate those occurring in vehicle fuel injectors. A high-pressure apparatus based on a visual identification of freezing and thawing has been designed and built to monitor phase behavior and determine the crystallization temperature of complex fuels to predict wax precipitation. The proposed methodology was validated using pure substances - n-hexadecane (C16H34), cyclohexane (C6H12), and a mixture of 0.5848 mol fraction n-hexadecane in cyclohexane. The crystallization temperatures of these compounds were measured from atmospheric pressure to 400 MPa for temperatures varying from 290 K to 363 K and compared to those reported in the literature. The standard error of the estimated temperatures for the experimental data obtained in this work, based on a given pressure, was compared to data from the literature. This methodology will be extended to investigate the properties of more complex fuel mixtures. ",
author = "Jones, {Margaret C.} and Campbell, {Kristen B.} and Coffey, {Mary Jane} and Marina, {Olga A.} and Coffey, {Gregory W.} and Alejandro Heredia-Langner and Linehan, {John C.} and Thomsen, {Edwin C.} and Bays, {J. Timothy}",
note = "Funding Information: This research was conducted as part of the Co-Optimization of Fuels & Engines (Co-Optima) project sponsored by the U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies and Vehicle Technologies Offices. Co-Optima is a collaborative project between multiple national laboratories and was initiated to simultaneously accelerate the introduction of affordable, scalable, and sustainable biofuels and high-efficiency, low-emission vehicle engines. PNNL is a multiprogram national laboratory operated by Battelle for the U.S. DOE under Contract No. DE-AC05-76RL01830. Funding Information: The authors are grateful to Kevin Stork, DOE Technology Development Manager, for supporting this work and to Charles Mueller for his unwavering confidence in the importance of this work. Additionally, we appreciate the valuable interactions and encouragement we have had with members of the Coordinating Research Council (CRC) Fuels for Advanced Combustion Engines (FACE) Working Group and other Advanced Vehicle Fuels and Lubricants Committees. Publisher Copyright: {\textcopyright} 2020 U.S. Government.",
year = "2020",
month = sep,
day = "1",
doi = "10.1063/5.0015518",
language = "English",
volume = "91",
journal = "Review of Scientific Instruments",
issn = "0034-6748",
publisher = "American Institute of Physics Publising LLC",
number = "9",
}