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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MDPI AG
2014-11-01
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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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id | doaj.art-c2b1b7ce77064e15a0db2e5fad004f92 |
institution | Directory Open Access Journal |
issn | 1996-1073 |
language | English |
last_indexed | 2024-04-14T05:06:59Z |
publishDate | 2014-11-01 |
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series | Energies |
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 |