Effect of wood fuel on the emissions from a top-feed pellet stove

O. Sippula, K. Hytönen, J. Tissari, T Raunemaa, Jorma Jokiniemi

Research output: Contribution to journalArticleScientificpeer-review

116 Citations (Scopus)

Abstract

Particle and gaseous emissions of a top-feed pellet stove were studied in laboratory conditions. Pellets made of separate stem and bark materials of five different wood species and a commercial pellet product were used as fuels. The study included the determination of the particle number concentration, size distribution, fine-particle mass (PM1.0), CO, CO2, NOx, and volatile organic compounds (VOC). The PM1.0 emission was analyzed for inorganic substances, organic carbon, and elemental carbon. Thermodynamic equilibrium calculations were performed to interpret the results from chemical analysis and to estimate the chemical composition of the PM1.0 mass emitted with various fuels.
The bark fuels produced higher PM, VOC, and CO emissions than stem fuels. This was evidently related to the higher ash content of the bark fuels and was found to increase both the fly ash emission and the products of incomplete combustion.
The fuel ash content correlated linearly with the PM1.0 emission. Among stem fuels, willow and alder produced higher PM1.0 emissions than birch, pine, spruce, and the commercial fuel. An exceptionally low PM1.0 emission was measured from pine bark combustion, which can be explained by the low ash content of the fuel.
The main components in the PM1.0 were K2SO4, KCl, K2CO3, KOH, and organic material. Except birch fuels, around 60−80 mass % of potassium species were K2SO4 based on the equilibrium calculations.
In the case of birch fuels, because of the high chlorine content and low S/Cl ratios, around half of the potassium was KCl.
Original languageEnglish
Pages (from-to)1151-1160
JournalEnergy & Fuels
Volume21
Issue number2
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

Fingerprint

Wood fuels
Stoves
Ashes
Volatile Organic Compounds
Carbon Monoxide
Volatile organic compounds
Potassium
Salix
Coal Ash
Chlorine
Organic carbon
Chemical analysis
Gas emissions
Fly ash
Wood

Keywords

  • pellets
  • emissions
  • fine particles
  • bark
  • biofuels
  • biomass
  • greenhouse gas emissions
  • climate change

Cite this

Sippula, O., Hytönen, K., Tissari, J., Raunemaa, T., & Jokiniemi, J. (2007). Effect of wood fuel on the emissions from a top-feed pellet stove. Energy & Fuels, 21(2), 1151-1160. https://doi.org/10.1021/ef060286e
Sippula, O. ; Hytönen, K. ; Tissari, J. ; Raunemaa, T ; Jokiniemi, Jorma. / Effect of wood fuel on the emissions from a top-feed pellet stove. In: Energy & Fuels. 2007 ; Vol. 21, No. 2. pp. 1151-1160.
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author = "O. Sippula and K. Hyt{\"o}nen and J. Tissari and T Raunemaa and Jorma Jokiniemi",
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Sippula, O, Hytönen, K, Tissari, J, Raunemaa, T & Jokiniemi, J 2007, 'Effect of wood fuel on the emissions from a top-feed pellet stove', Energy & Fuels, vol. 21, no. 2, pp. 1151-1160. https://doi.org/10.1021/ef060286e

Effect of wood fuel on the emissions from a top-feed pellet stove. / Sippula, O.; Hytönen, K.; Tissari, J.; Raunemaa, T; Jokiniemi, Jorma.

In: Energy & Fuels, Vol. 21, No. 2, 2007, p. 1151-1160.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of wood fuel on the emissions from a top-feed pellet stove

AU - Sippula, O.

AU - Hytönen, K.

AU - Tissari, J.

AU - Raunemaa, T

AU - Jokiniemi, Jorma

PY - 2007

Y1 - 2007

N2 - Particle and gaseous emissions of a top-feed pellet stove were studied in laboratory conditions. Pellets made of separate stem and bark materials of five different wood species and a commercial pellet product were used as fuels. The study included the determination of the particle number concentration, size distribution, fine-particle mass (PM1.0), CO, CO2, NOx, and volatile organic compounds (VOC). The PM1.0 emission was analyzed for inorganic substances, organic carbon, and elemental carbon. Thermodynamic equilibrium calculations were performed to interpret the results from chemical analysis and to estimate the chemical composition of the PM1.0 mass emitted with various fuels. The bark fuels produced higher PM, VOC, and CO emissions than stem fuels. This was evidently related to the higher ash content of the bark fuels and was found to increase both the fly ash emission and the products of incomplete combustion. The fuel ash content correlated linearly with the PM1.0 emission. Among stem fuels, willow and alder produced higher PM1.0 emissions than birch, pine, spruce, and the commercial fuel. An exceptionally low PM1.0 emission was measured from pine bark combustion, which can be explained by the low ash content of the fuel. The main components in the PM1.0 were K2SO4, KCl, K2CO3, KOH, and organic material. Except birch fuels, around 60−80 mass % of potassium species were K2SO4 based on the equilibrium calculations. In the case of birch fuels, because of the high chlorine content and low S/Cl ratios, around half of the potassium was KCl.

AB - Particle and gaseous emissions of a top-feed pellet stove were studied in laboratory conditions. Pellets made of separate stem and bark materials of five different wood species and a commercial pellet product were used as fuels. The study included the determination of the particle number concentration, size distribution, fine-particle mass (PM1.0), CO, CO2, NOx, and volatile organic compounds (VOC). The PM1.0 emission was analyzed for inorganic substances, organic carbon, and elemental carbon. Thermodynamic equilibrium calculations were performed to interpret the results from chemical analysis and to estimate the chemical composition of the PM1.0 mass emitted with various fuels. The bark fuels produced higher PM, VOC, and CO emissions than stem fuels. This was evidently related to the higher ash content of the bark fuels and was found to increase both the fly ash emission and the products of incomplete combustion. The fuel ash content correlated linearly with the PM1.0 emission. Among stem fuels, willow and alder produced higher PM1.0 emissions than birch, pine, spruce, and the commercial fuel. An exceptionally low PM1.0 emission was measured from pine bark combustion, which can be explained by the low ash content of the fuel. The main components in the PM1.0 were K2SO4, KCl, K2CO3, KOH, and organic material. Except birch fuels, around 60−80 mass % of potassium species were K2SO4 based on the equilibrium calculations. In the case of birch fuels, because of the high chlorine content and low S/Cl ratios, around half of the potassium was KCl.

KW - pellets

KW - emissions

KW - fine particles

KW - bark

KW - biofuels

KW - biomass

KW - greenhouse gas emissions

KW - climate change

U2 - 10.1021/ef060286e

DO - 10.1021/ef060286e

M3 - Article

VL - 21

SP - 1151

EP - 1160

JO - Energy & Fuels

JF - Energy & Fuels

SN - 0887-0624

IS - 2

ER -

Sippula O, Hytönen K, Tissari J, Raunemaa T, Jokiniemi J. Effect of wood fuel on the emissions from a top-feed pellet stove. Energy & Fuels. 2007;21(2):1151-1160. https://doi.org/10.1021/ef060286e