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1.606 Aktuelle Fachpublikationen zum Thema temperature

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Impact of Gas–Condensate Composition and Interfacial Tension on Oil-Repellency Strength of Wettability Modifiers

24.10.2014 | J. Fahimpour; M. Jamiolahmady, Energy & Fuels, 2014

Productivity of gas–condensate wells can significantly be declined as the condensate bank evolves around the wellbore. Wettability alteration of formation minerals from strongly liquid-wet to intermediate gas-wet conditions using liquid-repellent fluorinated chemicals has shown promising results ...

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Double Diffusive Magnetohydrodynamic (MHD) Mixed Convective Slip Flow along a Radiating Moving Vertical Flat Plate with Convective Boundary Condition

24.10.2014 | Mohammad M. Rashidi et al., PLoS ONE, 2014

by Mohammad M. Rashidi, Neda Kavyani, Shirley Abelman, Mohammed J. Uddin, Navid Freidoonimehr In this study combined heat and mass transfer by mixed convective flow along a moving vertical flat plate with hydrodynamic slip and thermal convective boundary condition is investigated. Using ...

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Photophysics and Rotational Diffusion of Hydrophilic Molecule in Polymer and Polyols

22.10.2014 | Aninda Chatterjee; Banibrata Maity; Sayeed Ashique Ahmed; Debabrata Seth, Journal of Physical Chemistry B, 2014

In this work we report the photophysics and rotational diffusion of a hydrophilic solute 7-(N,N′-diethylamino)coumarin-3-carboxylic acid (7-DCCA) in four protic solvents: poly(ethylene glycol), ethylene glycol, tetraethylene glycol, and glycerol, with variation of temperature. The cumulative ...

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Calorimetric and Rheological Studies on Cyclopentane Hydrate-Forming Water-in-Kerosene Emulsions

20.10.2014 | Amit Ahuja; Genti Zylyftari; Jeffrey F. Morris, Journal of Chemical & Engineering Data, 2014

The effect of salt, a thermodynamic inhibitor of hydrate, on a density-matched cyclopentane hydrate-forming water-in-kerosene emulsion with a fixed aqueous phase mass fraction of 0.4 is presented, based on studies by microdifferential scanning calorimetry (μDSC) and rheometry. Kerosene is a ...

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Experimental determination of the discharge flow coefficient at a doorway for fire induced flow in natural and mixed convection

16.10.2014 | A. Koched, H. Pretrel, O. Vauquelin, L. Audouin, Fire and Materials, 2014

SUMMARY The study is an experimental investigation of the discharge flow coefficient at a doorway‐type opening in the case of a fire in an enclosure open to atmosphere. Natural and mixed convection flows are considered with the use of mechanical ventilation. The discharge coefficient is ...

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Comparison of different kinetic models for the chlorohydrin process using real data from an industrial tubular reactor

15.10.2014 | Ivan Petric, Amel Husanović, The Canadian Journal of Chemical Engineering, 2014

Abstract The main objective of this study was to investigate how different kinetic models for the chlorohydrin process can influence the simulation results. In order to accomplish this objective, a simplified reactor model was developed and applied on the kinetic models. The simulation ...

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Determination of the Critical Properties of C6–C10 n-Alkanes and Their Binary Systems Using a Flow Apparatus

13.10.2014 | Yang Liu; Ying Zhang; Mao-gang He; Nan Xin, Journal of Chemical & Engineering Data, 2014

A flow apparatus was established to measure the critical properties of pure components and mixtures. The critical points are visually determined by observing the critical opalescence. The measurement can be carried out up to 10 MPa for pressure and 773 K for temperature. Critical temperatures ...

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Design Options for Avoiding Hydrates in Deep Offshore Production

10.10.2014 | Carlos A. B. R. Cardoso; Marcelo A. L. Gonçalves; Ricardo M. T. Camargo, Journal of Chemical & Engineering Data, 2014

Hydrate blockage in subsea systems is responsible for a portion of lost profits in several deepwater oil fields. This problem tends to worsen in the fields recently discovered in Brazilian Pre-Salt layer due to greater water depth, higher pressure, lower temperature, and oil more prone to ...

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Air‐promoted adsorptive desulfurization of diesel fuel over Ti‐Ce mixed metal oxides

07.10.2014 | Jing Xiao, Siddarth Sitamraju, Yongsheng Chen, Shingo Watanabe, Mamoru Fujii, Michael Janik, Chunshan Song, AIChE Journal, 2014

Abstract This work investigates air‐promoted adsorptive desulfurization (ADS) of commercial diesel fuel over a Ti‐Ce mixed oxide adsorbent in a flow system. The fresh/spent adsorbents were characterized using X‐ray absorption near edge structure spectroscopy. Results show that sulfoxide ...

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Analysis of heat transfer in a vessel with helical pipe coil and multistage impeller

07.10.2014 | Martin Dostál, Marcela Věříšová, Karel Petera, Tomáš Jirout, Ivan Fořt, The Canadian Journal of Chemical Engineering, 2014

Abstract Results of heat transfer coefficient measurements in an agitated vessel heated or cooled by the liquid media flowing in a helical pipe coil are presented in this paper. The multistage impeller made of two pitched six‐blade impellers and adjustable clearance was used in a vessel with ...

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