Blar i Publikasjoner fra CRIStin - SINTEF Energi på forfatter "Umeki, Kentaro"
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CO2 gasification reactivity of char from high-ash biomass
Phounglamcheik, Aekjuthon; Vila, Ricardo; Kienzl, Norbert; Wang, Liang; Hedayati, Ali; Broström, Markus; Ramser, Kerstin; Engvall, Klas; Skreiberg, Øyvind; Robinson, Ryan; Umeki, Kentaro (Peer reviewed; Journal article, 2021)Biomass char produced from pyrolysis processes is of great interest to be utilized as renewable solid fuels or materials. Forest byproducts and agricultural wastes are low-cost and sustainable biomass feedstocks. These ... -
The Effects of Pyrolysis Conditions and Feedstocks on the Properties and Gasification Reactivity of Charcoal from Woodchips
Phounglamcheik, Aekjuthon; Wang, Liang; Romar, Henrik; Kienzl, Norbert; Broström, Markus; Ramser, Kerstin; Skreiberg, Øyvind; Umeki, Kentaro (Peer reviewed; Journal article, 2020)Pyrolysis conditions in charcoal production affect yields, properties, and further use of charcoal. Reactivity is a critical property when using charcoal as an alternative to fossil coal and coke, as fuel or reductant, in ... -
The effects of Stefan flow on the flow surrounding two closely spaced particles
Jayawickrama, Thamali R.; Chishty, Muhammad Aqib; Haugen, Nils Erland L; Bäbler, Matthâus Ulrich; Umeki, Kentaro (Peer reviewed; Journal article, 2023)The aim of the work was to study the effects of neighboring particles with uniform Stefan flow in particle–fluid flows. Particle-resolved numerical simulations were carried out for particles emitting a uniform Stefan flow ... -
On the inaccuracies of point-particle approach for char conversion modeling
Jayawickrama, Thamali R.; Haugen, Nils Erland L; Umeki, Kentaro (Peer reviewed; Journal article, 2024)Char conversion is a complex phenomenon that involves not only heterogeneous reactions but also external and internal heat and mass transfer. Reactor-scale simulations often use a point-particle approach (PP approach) as ...