[Stoves] Influence of fuel-bed temperatures on CO and condensed matter emissions from packed-bed residential coal combustion

Crispin Pemberton-Pigott crispinpigott at outlook.com
Sat Sep 19 13:22:43 CDT 2015


Dear Friends

>From the SeTAR Centre group:

"Influence of fuel-bed temperatures on CO and condensed matter emissions
from packed-bed residential coal combustion"

Abstract
<https://www.researchgate.net/publication/281804591_Influence_of_fuel-bed_te
mperatures_on_CO_and_condensed_matter_emissions_from_packed-bed_residential_
coal_combustion?requestFulltext=true> 

In this paper, the influence of fire-ignition methods (which determine the
progression of the pyrolytic zone) and combustion temperatures on CO and
condensed matter (smoke) emissions during fixed-bed coal combustion were
investigated in a typical informal brazier/imbaula. Particle and gaseous
samples were drawn from the exhaust through a rapid dilution sampling system
(the SeTAR dilution system) before being channelled to respective gas and
particle analysers. Particle morphologies and chemical composition of the
particles were investigated by a VEGA3 SEM unit with EDS. Results showed
that the propagation of bed temperatures in fixed-bed residential combustion
has an influence on the characteristics of CO and PM10 emissions.
Temperature stratification was found to depend on the fire-ignition methods.
The top-lit up-draft (TLUD) fire-ignition method produced less emissions
compared to bottom-lit up-draft (BLUD) fire-ignition method. Bed
temperatures and the propagation front have an impact on aerosol formation
and can highlight differences in the morphology of the emitted particles and
the modes of formation. Increasing combustion temperature yields a decrease
in emissions liquid 'tarry' substances and super-aggregates (>10 μm) but
also leads to an increase in emissions of sub-micron soot particles. This
work is significant in that there is still scarce information available in
literature on fuel-bed temperature profiles/stratification for packed-bed
residential coal-burning devices.

 

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