Exergy Destruction in Pipeline Flow of Surfactant-Stabilized Oil-in-Water Emulsions

Exergy destruction in adiabatic pipeline flow of surfactant-stabilized oil-in-water emulsions is investigated in five different diameter pipes. The dispersed-phase (oil droplets) concentration of the emulsions is varied from 0% to 55.14% vol. The emulsions are Newtonian in that the viscosity is ind...

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Main Author: Rajinder Pal
Format: Article
Language:English
Published: MDPI AG 2014-11-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/7/11/7602
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author Rajinder Pal
author_facet Rajinder Pal
author_sort Rajinder Pal
collection DOAJ
description Exergy destruction in adiabatic pipeline flow of surfactant-stabilized oil-in-water emulsions is investigated in five different diameter pipes. The dispersed-phase (oil droplets) concentration of the emulsions is varied from 0% to 55.14% vol. The emulsions are Newtonian in that the viscosity is independent of the shear rate. For a given emulsion and pipe diameter, the exergy destruction rate per unit pipe length increases linearly with the increase in the Reynolds number on a log-log scale in both laminar and turbulent regimes. However the slope in the turbulent regime is higher. The exergy destruction rate increases with the increase in the dispersed-phase concentration of emulsion and decreases with the increase in the pipe diameter. New models are developed for the prediction of exergy destruction rate in pipeline flow of surfactant-stabilized oil-in-water emulsions. The models are based on the single-phase flow equations. The experimental data on exergy destruction in pipeline flow of emulsions shows excellent agreement with the predictions of the proposed models.
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spelling doaj.art-c2b1b7ce77064e15a0db2e5fad004f922022-12-22T02:10:40ZengMDPI AGEnergies1996-10732014-11-017117602761910.3390/en7117602en7117602Exergy Destruction in Pipeline Flow of Surfactant-Stabilized Oil-in-Water EmulsionsRajinder Pal0Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, CanadaExergy destruction in adiabatic pipeline flow of surfactant-stabilized oil-in-water emulsions is investigated in five different diameter pipes. The dispersed-phase (oil droplets) concentration of the emulsions is varied from 0% to 55.14% vol. The emulsions are Newtonian in that the viscosity is independent of the shear rate. For a given emulsion and pipe diameter, the exergy destruction rate per unit pipe length increases linearly with the increase in the Reynolds number on a log-log scale in both laminar and turbulent regimes. However the slope in the turbulent regime is higher. The exergy destruction rate increases with the increase in the dispersed-phase concentration of emulsion and decreases with the increase in the pipe diameter. New models are developed for the prediction of exergy destruction rate in pipeline flow of surfactant-stabilized oil-in-water emulsions. The models are based on the single-phase flow equations. The experimental data on exergy destruction in pipeline flow of emulsions shows excellent agreement with the predictions of the proposed models.http://www.mdpi.com/1996-1073/7/11/7602emulsionexergyentropyirreversibilityoil-in-waterpipelineflow
spellingShingle Rajinder Pal
Exergy Destruction in Pipeline Flow of Surfactant-Stabilized Oil-in-Water Emulsions
Energies
emulsion
exergy
entropy
irreversibility
oil-in-water
pipeline
flow
title Exergy Destruction in Pipeline Flow of Surfactant-Stabilized Oil-in-Water Emulsions
title_full Exergy Destruction in Pipeline Flow of Surfactant-Stabilized Oil-in-Water Emulsions
title_fullStr Exergy Destruction in Pipeline Flow of Surfactant-Stabilized Oil-in-Water Emulsions
title_full_unstemmed Exergy Destruction in Pipeline Flow of Surfactant-Stabilized Oil-in-Water Emulsions
title_short Exergy Destruction in Pipeline Flow of Surfactant-Stabilized Oil-in-Water Emulsions
title_sort exergy destruction in pipeline flow of surfactant stabilized oil in water emulsions
topic emulsion
exergy
entropy
irreversibility
oil-in-water
pipeline
flow
url http://www.mdpi.com/1996-1073/7/11/7602
work_keys_str_mv AT rajinderpal exergydestructioninpipelineflowofsurfactantstabilizedoilinwateremulsions