Piloted ignition of convection-heated cellulose slabs

✍ Scribed by W.D. Weatherford Jr; M.L. Valtierra

• Publisher: Elsevier Science
• Year: 1966
• Tongue: English
• Weight: 425 KB
• Volume: 10
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(66)90085-x

✦ Synopsis

The resul~ o~ experimental piloted ignition studies, whett considered in the light o] theoreti. col caiculafio~, indicate that the primary criterion which must be satis~ed in order to acheeve sustained ignition o/cellulose slubs in the continued presence o/the ignition and heat sources is tl;e attainment o/a axed fuel-generation rate per unit nut]ace area. These results contrast tuitl,, the piloted convection.ignition data o[ Bamlord et at., which do not correspond to a constant ]uel.generation.rate criterion, Rather, the latter data correspond to the threshold o[ sastained ignition upon removal o t the heat and pilot sources for "thermally thick' slabs where a thermal ]eedback criterion applies, Correlations el the exp.,~rimental results (based upon four nominal slab thw~nesses, three nominal alab densities and three source temperaturn levels) reveal that the ignition criteria are substantially in]lueneed by the physical and thermal properties o/ the slabs. There[or,:, tke correlated experimental results o~ this study should prove useJul to investigators inter~sted in the ignition char¢,cteristics o] prate ccllulose slabs in the continued presence o I a heat source.