Evaluation of non-steady state condition contribution to the total emissions of residential wood pellet stove

In order to evaluate non-steady phase contribution to the total emissions of a pellet stove in real domestic operations, particulate matter and gaseous emissions were determined separately for different operating conditions, i.e. ignition, partial load, increase in power and nominal load. TSP (Total...

Full description

Saved in:
Bibliographic Details
Published in:Energy (Oxford) 2015-08, Vol.88, p.650-657
Main Authors: Venturini, Elisa, Vassura, Ivano, Zanetti, Cristian, Pizzi, Andrea, Toscano, Giuseppe, Passarini, Fabrizio
Format: Article
Language:English
Subjects:
Biomass combustion
Combustion
Emission
Emission analysis
Heating system
Heavy metal
Ignition
PAH
Particulate matter (PM)
Pellets
Polycyclic aromatic hydrocarbons
Soluble ions
Stoves
Wood
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In order to evaluate non-steady phase contribution to the total emissions of a pellet stove in real domestic operations, particulate matter and gaseous emissions were determined separately for different operating conditions, i.e. ignition, partial load, increase in power and nominal load. TSP (Total suspended particulate) was sampled with a dilution system and characterized for TC (total carbon), PAHs (polycyclic aromatic hydrocarbons), the main soluble ions, Ni, As, Cd and Pb. Gas monitoring shows that CO and NO emission factors in ignition phase markedly differ from other operating conditions: NO emission factor is lower, while CO one is much higher, since it is a product of incomplete combustion. Start-up phase emission factors are also higher for TSP, Cd and other products of incomplete combustion, i.e. TC and PAHs. Despite being a non-steady phase, the increase in power phase emission factors appreciably differ from steady state ones only for PAHs. Moreover, the PAHs emitted in non-steady state phases have a higher toxicological burden. In conclusion, in order to evaluate the real impact of pellet stove on the environment, transient conditions should be taken into account. The ignition phase, even though it lasts only 20 min, can significantly contribute to pollutant emission. •Non-steady state condition contribution to pellet stove emissions was evaluated.•Emission factors of CO, TSP, TC, Cd and PAHs are higher for the ignition phase.•For increase in power phase only PAH emission factor differs from steady state ones.•PAHs emitted in non -steady state phases have a higher toxicological burden.
ISSN:0360-5442
DOI:10.1016/j.energy.2015.05.105