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1.966 Aktuelle Fachpublikationen zum Thema temperature

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Entropy, Vol. 18, Pages 54: Definition and Counting of Configurational Microstates in Steady-State Two-Phase Flows in Pore Networks

06.02.2016 | Valavanides, Marios S.; Daras, Tryfon, Entropy, 2016

Steady-state two-phase flow in porous media is a process whereby a wetting phase displaces a non-wetting phase within a pore network. It is an off-equilibrium stationary process—in the sense that it is maintained in dynamic equilibrium at the expense of energy supplied to the system. The ...

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Entropy, Vol. 18, Pages 52: Sensitivity Analysis of Entropy Generation in Nanofluid Flow inside a Channel by Response Surface Methodology

05.02.2016 | Darbari, Bijan ; Rashidi, Saman ; Abolfazli Esfahani, Javad, Entropy, 2016

Nanofluids can afford excellent thermal performance and have a major role in energy conservation aspect. In this paper, a sensitivity analysis has been performed by using response surface methodology to calculate the effects of nanoparticles on the entropy generation. For this purpose, the ...

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High temperature pyrolysis and CO2 gasification of Victorian brown coal and Rhenish lignite in an entrained flow reactor

05.02.2016 | Joanne Tanner, Marc Bläsing, Michael Müller, Sankar Bhattacharya, AIChE Journal, 2016

ABSTRACT The low rank coals from Victoria, Australia and Rhineland, Germany are of interest for use in entrained flow gasification applications. Therefore, a high temperature, electrically heated, entrained flow apparatus has been designed to address the shortage of fundamental data. A ...

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Direct numerical simulations of dynamic gas‐solid suspensions

05.02.2016 | Y. Tang, E.A.J.F. Peters, J.A.M. Kuipers, AIChE Journal, 2016

Abstract We report direct numerical simulation results for gas flow through dynamic suspensions of spherical particles. The simulations are performed using an immersed boundary method (IBM), with careful correction for the grid resolution effect. The flow systems we have studied vary with mean ...

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Distribution of Vanadium, Nickel, and Other Trace Metals in Soot and Char from Asphaltene Pyrolysis and Gasification

04.02.2016 | Vinoj Kurian; Rajender Gupta, Energy & Fuels, 2016

Vanadium (V) and nickel (Ni) are the most abundant and troublesome metals present in oil sands. During upgrading of the oil sand bitumen, these metals become concentrated in the heavier fraction asphaltenes. Any thermochemical conversion of asphaltene causes the release of these trace metals, and ...

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Enantioselective separation and pharmacokinetic dissipation of cyflumetofen in field soil by ultra performance convergence chromatography with tandem mass spectrometry

02.02.2016 | Na Liu, Fengshou Dong, Jun Xu, Xingang Liu, Zenglong Chen, Xinglu Pan, Xixi Chen, Yongquan Zheng, Journal of Separation Science, 2016

Little data on the enantioselective separation of cyflumetofen exists, despite the fact that such data are essential to the assessment of the fate and potential toxic effects of cyflumetofen enantiomers. To address this issue, a simple and sensitive method for the enantioselective determination ...

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Vapor–Liquid Equilibrium for Methanol + Methyl Palmitate near the Critical Temperature of Methanol

02.02.2016 | Jie Xu; Qinli Liu; Ting Yan; Yuqi Wang; Tao Fang, Journal of Chemical & Engineering Data, 2016

The vapor–liquid equilibrium for a methanol + methyl palmitate system was measured using a flow-type method at a pressure range of 1.86–8.81 MPa and a temperature range of 493–543 K, which is near the critical temperature of methanol (512.64 K). The mole fractions of methyl palmitate in the vapor ...

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Microwave Air Plasma Applied to Naphthalene Thermal Conversion

28.01.2016 | H. S. Medeiros; A. Pilatau; O. S. Nozhenko; A. S. da Silva Sobrinho; G. Petraconi Filho, Energy & Fuels, 2016

In this paper, a naphthalene (C10H8) thermal cracking model is presented. The model is based on a simple model that takes into account the microwave (MW) plasma thermal influence on naphthalene cracking, accompanying its steam reforming reactions. The temperature level of 1573 K was established ...

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Gasoline desulfurization by a TiO2‐filled ethyl cellulose pervaporation membrane

27.01.2016 | Yingfei Hou, Min Liu, Yiqing Huang, Lili Zhao, Jinfeng Wang, Qiang Cheng, Qingshan Niu, Journal of Applied Polymer Science, 2016

ABSTRACT The TiO2 nanoparticles were incorporated into an ethyl cellulose (EC) matrix to improve the pervaporation (PV) performance of the membrane for gasoline desulfurization. The microstructures of different EC membranes were characterized by scanning electron microscopy, Fourier transform ...

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Activation Energy of the Low-pH-Induced Lamellar to Bicontinuous Cubic Phase Transition in Dioleoylphosphatidylserine/Monoolein

27.01.2016 | Toshihiko Oka; Takahiro Saiki; Jahangir Md. Alam; Masahito Yamazaki, Langmuir, 2016

Electrostatic interaction is an important factor for phase transitions between lamellar liquid-crystalline (Lα) and inverse bicontinuous cubic (QII) phases. We investigated the effect of temperature on the low-pH-induced Lα to double-diamond cubic (QIID) phase transition in ...

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