Modelling Self-Heating and Self-Ignition Processes during Biomass Storage
Open accessAbstract
A mathematical model was developed to predict the self-heating and self-ignition processes of relatively dry biomass during storage, considering in detail the effects of moisture exchange behaviour, low-temperature oxidation reaction and associated heat and mass transfer. Basket heating tests on fir pellets and powder at temperatures of 180–200 °C were conducted to observe the heating process and determine the kinetics of low-temperature chemical oxidation for model validation. As a result, it was demonstrated that the developed model could reasonably represent the self-heating and spontaneous combustion processes of biomass storage. Furthermore, the numerical study and model sensitivity analysis revealed that reasonably describing the low-temperature oxidation and associated heat and mass transfer process with reliable estimations of kinetic and thermophysical parameters of the biomass material is necessary for predicting the self-ignition, considering the effect of water exchange behaviour is essential to predict the self-heating process even for relatively dry biomass, such as pellets, with the moisture content up to 15–20%.
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Packed volumes amplify heat build-up, yet this effect is secondary to biochar properties-B800 and HTB800 fines at full basket volume still passed.
“Packed volumes amplify heat build-up, yet this effect is secondary to biochar properties-B800 and HTB800 fines at full basket volume still passed [115,116].”
From Pilot-Scale Slow Pyrolysis, Post-Heat Treatment, and Self-Heating Performance of Biochar Fuels Derived from Construction, Renovation, and Demolition (CRD) Wood Waste (2026) · cites this paper as [115]
Section 3.4 (page unavailable) links biomass properties, particularly thermal conductivity, to heat accumulation and self-ignition. But the paper does not establish that packed-volume effects are secondary to biochar properties. Section 2.3 (page unavailable) describes tests of fir pellets and powder, not B800 or HTB800 fines, and reports no full-basket-volume pass result for them. (LLM, conf=0.78)
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- Authors
- Wei, J., Yao, C., & Sheng, C.
- Affiliations
- Southeast University (CN)
- Corresponding author
- Sheng, Changdong
- Venue
- Energies
- Publisher
- MDPI AG
- Published
- 2023-05-12
- Volume
- 16
- Issue
- 10
- Pages
- 4048
- ISSN
- 1996-1073 (ISSN-L)
- OpenAlex
- W4382446748
- Cited by
- 11
- References
- 35
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 1
- FWCI
- 0.87
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Energies (publishedVersion, cc-by)
- RePEc: Research Papers in Economics (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
- Physical Sciences › Engineering › Ocean Engineering › Coal Properties and Utilization
- Physical Sciences › Engineering › Mechanics of Materials › Forest Biomass Utilization and Management
- Keywords
- self-heating, autoignition, spontaneous combustion, biomass storage, low-temperature oxidation, moisture exchange, heat and mass transfer, oxidation kinetics, thermophysical properties, sensitivity analysis, mathematical modeling
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