Next Article in Journal
Information-Theoretic Bounded Rationality and ε-Optimality
Previous Article in Journal
Spatiotemporal Scaling Effect on Rainfall Network Design Using Entropy
Article Menu

Export Article

Open AccessArticle
Entropy 2014, 16(8), 4648-4661; doi:10.3390/e16084648

Entropy Production in Pipeline Flow of Dispersions of Water in Oil

Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
Received: 23 July 2014 / Revised: 4 August 2014 / Accepted: 15 August 2014 / Published: 19 August 2014
(This article belongs to the Section Thermodynamics)
View Full-Text   |   Download PDF [1144 KB, uploaded 24 February 2015]   |  

Abstract

Entropy production in pipeline adiabatic flow of water-in-oil emulsions is investigated experimentally in three different diameter pipes. The dispersed-phase (water droplets) concentration of emulsion is varied from 0 to 41% vol. The entropy production rates in emulsion flow are compared with the values expected in single-phase flow of Newtonian fluids with the same properties (viscosity and density). While in the laminar regime the entropy production rates in emulsion flow can be described adequately by the single-phase Newtonian equations, a significant deviation from single-phase flow behavior is observed in the turbulent regime. In the turbulent regime, the entropy production rates in emulsion flow are found to be substantially smaller than those expected on the basis of single-phase equations. For example, the entropy production rate in water-in-oil emulsion flow at a dispersed-phase volume fraction of 0.41 is only 38.4% of that observed in flow of a single-phase Newtonian fluid with the same viscosity and density, when comparison is made at a Reynolds number of 4000. Thus emulsion flow in pipelines is more efficient thermodynamically than single-phase Newtonian flow. View Full-Text
Keywords: emulsion; dispersion; entropy generation; pipeline flow; exergy destruction emulsion; dispersion; entropy generation; pipeline flow; exergy destruction
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Pal, R. Entropy Production in Pipeline Flow of Dispersions of Water in Oil. Entropy 2014, 16, 4648-4661.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top