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Publisher DOI: 10.1016/j.csite.2019.100480
Title: Thermodynamic assessment of the fixed-bed downdraft gasification process of fallen leaves pelletized with glycerol as binder
Language: English
Authors: González, William A. 
Zimmermann, Felix 
Pérez, Juan Fernando 
Keywords: Garden waste biomass;Waste to energy;Thermochemical conversion;Energy and exergy analyzes;Sustainable university campus
Issue Date: 6-Jul-2019
Publisher: Elsevier
Source: Case Studies in Thermal Engineering (14): 100480- (2019-09)
Journal or Series Name: Case Studies in Thermal Engineering 
Abstract (english): In this work, the effect of airflow rate and glycerol content of pelletized fallen leaves (FL) on a fixed bed gasification process is studied. FLs were collected in the main campus of the University of Antioquia (Medellin, Colombia). Levels of airflow rate tested were 0.075, 0.150, and 0.225 kg/s/m2; and the glycerol content of pellets evaluated were 0 and 5%wt. When the airflow rate increased, flame front velocity increased up to 51.3%. This behavior was attributed to high temperatures in the reaction front, which were favored by the decrease of fuel-air equivalence ratio leading to high biomass consumption in the gasification process. Regarding the glycerol content of the pellets, production of gaseous species was favored with this compound, where an increase of CH4 by 25% and H2 by 20% was observed with regard to the raw pellets. The high concentration of the gaseous fuel species leads to an increase of cold gas efficiency (CGE) as well as chemical exergy efficiency (CEE) by ∼13%. Whereas, the irreversibilities (I) of the thermochemical process decreased by 10% when pellets with glycerol content were gasified.
DOI: 10.15480/882.2334
ISSN: 2214-157X
Institute: Studiendekanat Verfahrenstechnik SDV 
Type: (wissenschaftlicher) Artikel
Funded by: Support of the University of Antioquia through the projects PRG2017-16230 and Sostenibilidad 2019–2020
Appears in Collections:Publications (tub.dok)

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