skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Low-Order Modeling of Internal Heat Transfer in Biomass Particle Pyrolysis

Abstract

We present a computationally efficient, one-dimensional simulation methodology for biomass particle heating under conditions typical of fast pyrolysis. Our methodology is based on identifying the rate limiting geometric and structural factors for conductive heat transport in biomass particle models with realistic morphology to develop low-order approximations that behave appropriately. Comparisons of transient temperature trends predicted by our one-dimensional method with three-dimensional simulations of woody biomass particles reveal good agreement, if the appropriate equivalent spherical diameter and bulk thermal properties are used. We conclude that, for particle sizes and heating regimes typical of fast pyrolysis, it is possible to simulate biomass particle heating with reasonable accuracy and minimal computational overhead, even when variable size, aspherical shape, anisotropic conductivity, and complex, species-specific internal pore geometry are incorporated.

Authors:
; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B)
OSTI Identifier:
1270780
Report Number(s):
NREL/JA-2700-66823
Journal ID: ISSN 0887-0624
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Resource Relation:
Journal Name: Energy and Fuels; Journal Volume: 30; Journal Issue: 6
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; fast pyrolysis; simulation; biomass

Citation Formats

Wiggins, Gavin M., Ciesielski, Peter N., and Daw, C. Stuart. Low-Order Modeling of Internal Heat Transfer in Biomass Particle Pyrolysis. United States: N. p., 2016. Web. doi:10.1021/acs.energyfuels.6b00554.
Wiggins, Gavin M., Ciesielski, Peter N., & Daw, C. Stuart. Low-Order Modeling of Internal Heat Transfer in Biomass Particle Pyrolysis. United States. doi:10.1021/acs.energyfuels.6b00554.
Wiggins, Gavin M., Ciesielski, Peter N., and Daw, C. Stuart. Thu . "Low-Order Modeling of Internal Heat Transfer in Biomass Particle Pyrolysis". United States. doi:10.1021/acs.energyfuels.6b00554.
@article{osti_1270780,
title = {Low-Order Modeling of Internal Heat Transfer in Biomass Particle Pyrolysis},
author = {Wiggins, Gavin M. and Ciesielski, Peter N. and Daw, C. Stuart},
abstractNote = {We present a computationally efficient, one-dimensional simulation methodology for biomass particle heating under conditions typical of fast pyrolysis. Our methodology is based on identifying the rate limiting geometric and structural factors for conductive heat transport in biomass particle models with realistic morphology to develop low-order approximations that behave appropriately. Comparisons of transient temperature trends predicted by our one-dimensional method with three-dimensional simulations of woody biomass particles reveal good agreement, if the appropriate equivalent spherical diameter and bulk thermal properties are used. We conclude that, for particle sizes and heating regimes typical of fast pyrolysis, it is possible to simulate biomass particle heating with reasonable accuracy and minimal computational overhead, even when variable size, aspherical shape, anisotropic conductivity, and complex, species-specific internal pore geometry are incorporated.},
doi = {10.1021/acs.energyfuels.6b00554},
journal = {Energy and Fuels},
number = 6,
volume = 30,
place = {United States},
year = {Thu Jun 16 00:00:00 EDT 2016},
month = {Thu Jun 16 00:00:00 EDT 2016}
}