Development and evaluation of a long-term deposit probe for on-line monitoring of deposit growth

Anders Brink; Tor Laurén; Patrik Yrjas; Mikko Hupa; J Friesenbichler

doi:10.1016/j.fuproc.2007.06.029

Development and evaluation of a long-term deposit probe for on-line monitoring of deposit growth

Anders Brink, Tor Laurén, Patrik Yrjas, Mikko Hupa, J Friesenbichler

Laboratoryservices

Research output: Contribution to journal › Article › Scientific › peer-review

7 Citations (Scopus)

Abstract

A newly designed air-cooled probe for on-line monitoring of deposition growth has been tested in a boiler firing three woody fuels. Thermocouples are mounted on both sides of the tube wall enabling measurements of the heat flux through the probe wall. Knowing the heat flux through the probe wall, it is possible to measure the additional heat transfer resistance caused by the deposit and to estimate the properties of the deposit. Calculating the deposit thickness using the collected temperature data indicated the thinnest deposit when wood was fired, followed by bark and waste wood. The calculated deposit thickness was larger than those found when analysing the deposit thickness after the probe had been removed. Nevertheless, the ranking of fuels by deposit build-up rate was the same.

Original language	Undefined/Unknown
Pages (from-to)	1129–1135
Number of pages	7
Journal	Fuel Processing Technology
Volume	88
Issue number	11-12
DOIs	https://doi.org/10.1016/j.fuproc.2007.06.029
Publication status	Published - 2007
MoE publication type	A1 Journal article-refereed

Keywords

biomass
deposit probe
on-line monitoring

Access to Document

10.1016/j.fuproc.2007.06.029

Cite this

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title = "Development and evaluation of a long-term deposit probe for on-line monitoring of deposit growth",

abstract = "A newly designed air-cooled probe for on-line monitoring of deposition growth has been tested in a boiler firing three woody fuels. Thermocouples are mounted on both sides of the tube wall enabling measurements of the heat flux through the probe wall. Knowing the heat flux through the probe wall, it is possible to measure the additional heat transfer resistance caused by the deposit and to estimate the properties of the deposit. Calculating the deposit thickness using the collected temperature data indicated the thinnest deposit when wood was fired, followed by bark and waste wood. The calculated deposit thickness was larger than those found when analysing the deposit thickness after the probe had been removed. Nevertheless, the ranking of fuels by deposit build-up rate was the same.",

keywords = "biomass, deposit probe, on-line monitoring, biomass, deposit probe, on-line monitoring, biomass, deposit probe, on-line monitoring",

author = "Anders Brink and Tor Laur{\'e}n and Patrik Yrjas and Mikko Hupa and J Friesenbichler",

note = "Conference on Impacts of Fuel Quality on Power Production. Oct. 29-Nov. 03 (2006), Snowbird, UT.",

year = "2007",

doi = "10.1016/j.fuproc.2007.06.029",

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T1 - Development and evaluation of a long-term deposit probe for on-line monitoring of deposit growth

AU - Brink, Anders

AU - Laurén, Tor

AU - Yrjas, Patrik

AU - Hupa, Mikko

AU - Friesenbichler, J

N1 - Conference on Impacts of Fuel Quality on Power Production. Oct. 29-Nov. 03 (2006), Snowbird, UT.

PY - 2007

Y1 - 2007

N2 - A newly designed air-cooled probe for on-line monitoring of deposition growth has been tested in a boiler firing three woody fuels. Thermocouples are mounted on both sides of the tube wall enabling measurements of the heat flux through the probe wall. Knowing the heat flux through the probe wall, it is possible to measure the additional heat transfer resistance caused by the deposit and to estimate the properties of the deposit. Calculating the deposit thickness using the collected temperature data indicated the thinnest deposit when wood was fired, followed by bark and waste wood. The calculated deposit thickness was larger than those found when analysing the deposit thickness after the probe had been removed. Nevertheless, the ranking of fuels by deposit build-up rate was the same.

AB - A newly designed air-cooled probe for on-line monitoring of deposition growth has been tested in a boiler firing three woody fuels. Thermocouples are mounted on both sides of the tube wall enabling measurements of the heat flux through the probe wall. Knowing the heat flux through the probe wall, it is possible to measure the additional heat transfer resistance caused by the deposit and to estimate the properties of the deposit. Calculating the deposit thickness using the collected temperature data indicated the thinnest deposit when wood was fired, followed by bark and waste wood. The calculated deposit thickness was larger than those found when analysing the deposit thickness after the probe had been removed. Nevertheless, the ranking of fuels by deposit build-up rate was the same.

KW - biomass

KW - deposit probe

KW - on-line monitoring

KW - biomass

KW - deposit probe

KW - on-line monitoring

KW - biomass

KW - deposit probe

KW - on-line monitoring

U2 - 10.1016/j.fuproc.2007.06.029

DO - 10.1016/j.fuproc.2007.06.029

M3 - Artikel

SN - 0378-3820

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EP - 1135

JO - Fuel Processing Technology

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