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Active fuel particles dispersion by synthetic jet in an entrained flow gasifier of biomass: Cold flow
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.ORCID-id: 0000-0001-6081-5736
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.ORCID-id: 0000-0002-1033-0244
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Rekke forfattare: 52016 (engelsk)Inngår i: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 302, s. 275-282Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Pulverized fuel (PF) burners play a key role for the performance of PF fired gasification and combustion plants, by minimizing pollutant emission, fuel consumption and hence fuel costs. However, fuel diversity in power generation plants imposes limitations on the performance of existing PF burners, especially when burning solid fuel particles with poor flowability like biomass sawdust. In the present study, a vertically downward laminar flow was laden with biomass particles at different particle mass loading ratios, ranging from 0.47 to 2.67. The particle laden flow was forced by a synthetic jet actuator over a range of forcing amplitudes, 0.35–1.1 kPa. Pulverized pine particles with a sieve size range of 63–112 μm were used as biomass feedstock. Two-phase particle image velocimetry was applied to measure the velocity of the particles and air flow at the same time. The results showed that the synthetic jet had a large influence on the flow fields of both air and powdered pine particles, via a convective effect induced by vortex rings that propagate in the flow direction. The particle velocity, particle dispersion and hence inter-particle distance increased with increasing forcing amplitude. Moreover, particles accumulated within a specific region of the flow, based on their size. The effect on particle dispersion was more pronounced in the forced flows with low mass loading ratios

sted, utgiver, år, opplag, sider
2016. Vol. 302, s. 275-282
HSV kategori
Forskningsprogram
Energiteknik; Strömningslära
Identifikatorer
URN: urn:nbn:se:ltu:diva-59675DOI: 10.1016/j.powtec.2016.08.071ISI: 000386420500027Scopus ID: 2-s2.0-84984837775OAI: oai:DiVA.org:ltu-59675DiVA, id: diva2:1034470
Merknad

Validerad; 2016; Nivå 1; 2016-10-11 (andbra)

Tilgjengelig fra: 2016-10-12 Laget: 2016-10-12 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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Hazim, AmmarGöktepe, BurakUmeki, KentaroLundström, StaffanGebart, Rikard

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