Investigation on Gaseous and Particle Mass Emissions from Automatically Fired Small Scale Heating System Under Laboratory Conditions

Md Obaidullah, Svend Bram, Jacques De Ruyck

Research output: Contribution to journalArticle


This study presents the experimental results on gaseous and particle mass emissions obtained from a bottom feed pellet
stove of 2.5 kW output in part load heat and 5 kW output in nominal heat. The experiments were conducted in a stove manufacturing
plant in the southern part of Belgium. Two combustion experiments (A and B) in part load heat output and four experiments (C, D, E
and E) in nominal load were performed at three combustion phases: startup, combustion and burnout phase. The pellet stove was
operated in different fan speeds varied from 900 rpm to 1250 rpm for the combustion experiments. Experiments A and B were operated
with low speed fan, C and D with medium speed fan, E and F with high speed fan. The emissions results include CO2, CO, O2 and particle
mass concentrations are presented in this study. A performance analysis in terms of combustion efficiency together with different losses
of the pellet stove is also discussed. The experimental results show that CO emissions obtained from the main combustion phase of the
part load heat output experiments varied from 1215 mg/Nm3 to 1450 mg/Nm3, while in the nominal load heat output varied from 50
mg/Nm3 to 145 mg/Nm3. Also, the results show that CO emissions in the burnout phase from all the experiments were significantly
higher than that in the startup phase followed by the combustion phase. The finding shows that higher CO emissions in the startup and
burnout phase have influence on the total CO emissions. Particle mass emissions obtained from the combustion experiments operated
with high fan speed varied from 10-15 mg/Nm3 respectively and were much lower than the required limit value of standard EN14785
and other works. The combustion efficiency obtained from all the experiments for the low speed fan, medium speed fan and high speed
fan was 92.8±1.2 %, 92.4±1.1 % and 92.7±1.2 % respectively and satisfied the required limit value of the standard.
Original languageEnglish
Pages (from-to)111-121
Number of pages11
JournalInt. Journal of renewable Energy Development
Issue number2
Publication statusPublished - 15 Jul 2018

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