@prefix prodottidellaricerca: . @prefix istituto: . @prefix prodotto: . istituto:CDS070 prodottidellaricerca:prodotto prodotto:ID219179 . @prefix pubblicazioni: . @prefix unitaDiPersonaleInterno: . unitaDiPersonaleInterno:MATRICOLA29192 pubblicazioni:autoreCNRDi prodotto:ID219179 . unitaDiPersonaleInterno:MATRICOLA8383 pubblicazioni:autoreCNRDi prodotto:ID219179 . unitaDiPersonaleInterno:MATRICOLA8359 pubblicazioni:autoreCNRDi prodotto:ID219179 . unitaDiPersonaleInterno:MATRICOLA18162 pubblicazioni:autoreCNRDi prodotto:ID219179 . @prefix rdf: . @prefix retescientifica: . prodotto:ID219179 rdf:type retescientifica:ProdottoDellaRicerca , prodotto:TIPO1301 . @prefix rdfs: . prodotto:ID219179 rdfs:label "Set up of an experimental apparatus for the study of fragmentation of solid fuels upon severe heating (Contributo in atti di convegno)"@en . @prefix xsd: . prodotto:ID219179 pubblicazioni:anno "2009-01-01T00:00:00+01:00"^^xsd:gYear . @prefix skos: . prodotto:ID219179 skos:altLabel "
O. Senneca, C. Allouis, R. Chirone, S. Russo (2009)
Set up of an experimental apparatus for the study of fragmentation of solid fuels upon severe heating
in 6th Mediterranean Combustion Symposium, Ajaccio, 7-11/06
"^^rdf:HTML ; pubblicazioni:autori "O. Senneca, C. Allouis, R. Chirone, S. Russo"^^xsd:string ; pubblicazioni:affiliazioni "IRC-CNR"^^xsd:string ; pubblicazioni:titolo "Set up of an experimental apparatus for the study of fragmentation of solid fuels upon severe heating"^^xsd:string ; prodottidellaricerca:abstract "fragmentation of solid fuels under severe heating conditions. The devise is a modified heated\nstrip reactor, capable to reach 2000\u00B0C in less than 0.2s. Particles are laid on the strip and\npyrolysed under inert or moderately oxidizing conditions. The char particles and their\nfragments, generated upon pyrolysis, can be recovered and analysed to assess the\nfragmentation propensity of the fuel.\nSome preliminary experiments have been carried out on two biomass samples in order to\nassess the temperature time history of particles in the experimental apparatus. In particular\nbiomass particles of approximately 2-3 mm have been used. The temperature of the heated\nstrip reactor in such preliminary tests was varied between 1000 and 1600\u00B0C, while the strip\nnominal heating rate was kept at 104\u00B0C/s and the holding time was set at the value of 10s. A\nnear infrared fast camera (38000 frames/sec) has been used to measure the temperature of the\nheated strip and of the particles during the tests. A heat up model was developed and\nvalidated against experimental results. The model was then used to estimate the temperature\ngradients across particles of biomass and of coal as well.\nResults show that the strip of the reactor reaches the set temperature in less than 0.2s.\nWhen particles are laid on the strip, their bottom surface, which is in physical contact with\nthe strip, immediately reaches the set temperature value. For 1mm coal particles the upper\nsurface can be considered at the same temperature as well. Under the most severe conditions\ntested (strip temperature of 1600\u00B0C , biomass particles of 2mm thickness) the temperature\ndifference between the bottom and the upper face is 200\u00B0C after 3s and drops to 100\u00B0C after\n10 s. On the whole the experimental apparatus simulates uniform heating of the particles with\nreasonable approximation. In the next future the apparatus will be further upgraded to operate\nat pressures up to 20 bar."@en ; prodottidellaricerca:prodottoDi istituto:CDS070 ; pubblicazioni:autoreCNR unitaDiPersonaleInterno:MATRICOLA29192 , unitaDiPersonaleInterno:MATRICOLA8359 , unitaDiPersonaleInterno:MATRICOLA8383 , unitaDiPersonaleInterno:MATRICOLA18162 .