Effect of Volatiles on Soot Based Deposit LayersSource: Journal of Engineering for Gas Turbines and Power:;2014:;volume( 136 ):;issue: 011::page 111401Author:Salvi, Ashwin
,
Hoard, John
,
Bieniek, Mitchell
,
Abarham, Mehdi
,
Styles, Dan
,
Assanis, Dionissios
DOI: 10.1115/1.4027460Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The implementation of exhaust gas recirculation (EGR) coolers has recently been a widespread methodology for engine incylinder NOx reduction. A common problem with the use of EGR coolers is the tendency for a deposit, or fouling layer to form through thermophoresis. These deposit layers consist of soot and volatiles and reduce the effectiveness of heat exchangers at decreasing exhaust gas outlet temperatures, subsequently increasing engine out NOx emission. This paper presents results from a novel visualization rig that allows for the development of a deposit layer while providing optical and infrared access. A 24 h, 379micronthick deposit layer was developed and characterized with an optical microscope, an infrared camera, and a thermogravimetric analyzer. The in situ thermal conductivity of the deposit layer was calculated to be 0.047 W/mK. Volatiles from the layer were then evaporated off and the layer reanalyzed. Results suggest that the removal of volatile components affect the thermophysical properties of the deposit. Hypotheses supporting these results are presented.
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contributor author | Salvi, Ashwin | |
contributor author | Hoard, John | |
contributor author | Bieniek, Mitchell | |
contributor author | Abarham, Mehdi | |
contributor author | Styles, Dan | |
contributor author | Assanis, Dionissios | |
date accessioned | 2017-05-09T01:08:02Z | |
date available | 2017-05-09T01:08:02Z | |
date issued | 2014 | |
identifier issn | 1528-8919 | |
identifier other | gtp_136_11_111401.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/154832 | |
description abstract | The implementation of exhaust gas recirculation (EGR) coolers has recently been a widespread methodology for engine incylinder NOx reduction. A common problem with the use of EGR coolers is the tendency for a deposit, or fouling layer to form through thermophoresis. These deposit layers consist of soot and volatiles and reduce the effectiveness of heat exchangers at decreasing exhaust gas outlet temperatures, subsequently increasing engine out NOx emission. This paper presents results from a novel visualization rig that allows for the development of a deposit layer while providing optical and infrared access. A 24 h, 379micronthick deposit layer was developed and characterized with an optical microscope, an infrared camera, and a thermogravimetric analyzer. The in situ thermal conductivity of the deposit layer was calculated to be 0.047 W/mK. Volatiles from the layer were then evaporated off and the layer reanalyzed. Results suggest that the removal of volatile components affect the thermophysical properties of the deposit. Hypotheses supporting these results are presented. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Effect of Volatiles on Soot Based Deposit Layers | |
type | Journal Paper | |
journal volume | 136 | |
journal issue | 11 | |
journal title | Journal of Engineering for Gas Turbines and Power | |
identifier doi | 10.1115/1.4027460 | |
journal fristpage | 111401 | |
journal lastpage | 111401 | |
identifier eissn | 0742-4795 | |
tree | Journal of Engineering for Gas Turbines and Power:;2014:;volume( 136 ):;issue: 011 | |
contenttype | Fulltext |