Numerical and Experimental Analyses of Flue Gas Emissions, from Biomass Pellet Combustion in a Domestic Boiler

Simple item page
creativework.keywordsbiomass pellets, CFD modeling, combustion efficiency, emissions control, flue gas emissions, renewable energy, residential boiler
creativework.publisherMultidisciplinary Digital Publishing Institute (MDPI)en
dc.contributor.authorMileva N.
dc.contributor.authorZlateva P.
dc.contributor.authorIvanov M.
dc.contributor.authorKrumov K.
dc.contributor.authorTerziev A.
dc.contributor.authorComarla A.
dc.date.accessioned2026-01-20T13:58:04Z
dc.date.accessioned2026-01-20T15:55:10Z
dc.date.available2026-01-20T13:58:04Z
dc.date.available2026-01-20T15:55:10Z
dc.date.issued2025-10-01
dc.description.abstractThis study explores the combustion behavior of three biomass pellet types—wood (W), sunflower husk (SH), and a mixture of wood and sunflower husks (W/SH)—in a residential hot water boiler. Experiments were carried out under two air supply regimes (40%/60% and 60%/40% primary to secondary air) to measure flue gas concentrations of oxygen (O2), carbon monoxide (CO), and nitrogen oxides (NOx). The results indicate that SH pellets generate the highest emissions (CO: 1095.3 mg/m3, NOx: 679.3 mg/m3), while W pellets achieve the lowest (CO: 0.3 mg/m3, NOx: 194.1 mg/m3). The mixed W/SH pellets produce intermediate values (CO: 148.7 mg/m3, NOx: 201.8 mg/m3). Overall boiler efficiency for all tested fuels ranged from 90.3% to 91.4%. Numerical simulations using ANSYS CFX (2024 R2 (24.2)) were performed to analyze temperature distribution, flue gas composition, and flow fields, showing good agreement with experimental outlet temperature and emission trends. These findings emphasize that both pellet composition and air distribution significantly influence efficiency and emissions, offering guidance for optimizing small-scale biomass boiler operation.
dc.identifier.doi10.3390/eng6100257
dc.identifier.issn2673-4117
dc.identifier.scopusSCOPUS_ID:105020007096en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/1908
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105020007096&origin=inward
dc.titleNumerical and Experimental Analyses of Flue Gas Emissions, from Biomass Pellet Combustion in a Domestic Boiler
dc.typeArticle
oaire.citation.issue10
oaire.citation.volume6
Files
Collections
Articles