Title:
A Methodology to Estimate Biomass Combustion Time from a Limited Set of Readily Measurable Parameters
Author(s):
Asheruddin, N.M., Shivapuji, A.M., Dasappa, S.
Document(s):
Paper
Poster
Abstract:
The article reports an extensive experimental investigation of the biomass combustion process and the factors affecting it. The study is initiated in a backdrop of the limited information available in literature towards characterizing a biomass combustion process with readily observable and measurable properties. The scope of the current work addresses the lacuna in the literature by studying the influence of particle size (10 mm – 20 mm), particle shapes, particle density (160 kg/m3 – 350 kg/m3), temperature (673 K – 1073 K) and oxidizer velocity (0.1 m/s – 10 m/s) on the biomass conversion process. The absolute biomass combustion time is split into pyrolysis (flaming time) and char oxidation time (glowing time), considering that the parameters have distinct influences on either process. It is observed that the particle size has a near-quadratic effect on both pyrolysis and char oxidation. The influence of sphericity and density on the combustion time is linear. Temperature influences the combustion time exponentially, and the combustion time is observed to decrease logarithmically with particle Reynolds number. The influence of various parameters on the combustion process is quantified by regression analysis. A correlation associating the combustion time with individual parameters is obtained. Further, the series of correlations are compounded to obtain the generic equations to estimate combustion time for a given set of parameters. The combustion time estimate from the equation is compared with experimental data from literature and found to be 10% deviation.
Keywords:
alternative energy, alternative fuel, combustion, gasification, char
Topic:
Biomass Conversion for Bioenergy
Subtopic:
Advanced biomass combustion
Event:
30th European Biomass Conference and Exhibition
Session:
4BV.1.9
Pages:
667 - 669
ISBN:
978-88-89407-22-6
Paper DOI:
10.5071/30thEUBCE2022-4BV.1.9
Price:
FREE
