In this study, ADM1-based kinetics were combined with a thermal model that accounts for various heat transfers inside and through the reactor’s boundaries. Computing the energy of bioreactions based on kinetic rates prevented an overestimation of approximately 20% in the heat demand of the heat exchanger, compared to calculations using feedstock degradation heat. This also improved the representation of the digester’s thermal and reactional inertia. Simulations across different climates demonstrated the necessity to tailor digester construction. In the North West United Kingdom, biogas auto-consumption was 23% higher than that of the same reactor in South West France. Enhancing the thermal insulation of the digester reduced heat losses by 37% in the United Kingdom. Therefore, coupling the kinetic and thermal models expands the insights that can be extracted from simulations, which can be valuable in optimizing the operation and design of biogas digesters.

Combining thermal model and kinetics: implications in dynamic simulation of anaerobic digesters

Giberto Mitsuyoshi Yuki Junior
First
;
Flavia Dela Pierre;Elio Dinuccio
Co-last
;
2024-01-01

Abstract

In this study, ADM1-based kinetics were combined with a thermal model that accounts for various heat transfers inside and through the reactor’s boundaries. Computing the energy of bioreactions based on kinetic rates prevented an overestimation of approximately 20% in the heat demand of the heat exchanger, compared to calculations using feedstock degradation heat. This also improved the representation of the digester’s thermal and reactional inertia. Simulations across different climates demonstrated the necessity to tailor digester construction. In the North West United Kingdom, biogas auto-consumption was 23% higher than that of the same reactor in South West France. Enhancing the thermal insulation of the digester reduced heat losses by 37% in the United Kingdom. Therefore, coupling the kinetic and thermal models expands the insights that can be extracted from simulations, which can be valuable in optimizing the operation and design of biogas digesters.
2024
Inglese
Esperti anonimi
413
131343
1
12
12
Biogas, ADM1, energy model, heat, loss
FRANCIA
   Towards a Mediterranean Climate Neutral Farm scheme. LIFE20 CCM/ES/001751
   Life CLINMED-FARM
   EUROPEAN COMMISSION
   LIFE20 CCM/ES/001751
3 – prodotto con deroga per i casi previsti dal Regolamento (allegherò il modulo al passo 5-Carica)
262
5
Giberto Mitsuyoshi Yuki Junior, Sabine Sochard, Flavia Dela Pierre, Elio Dinuccio, Frédéric Marias
info:eu-repo/semantics/article
embargoed_20260901
03-CONTRIBUTO IN RIVISTA::03A-Articolo su Rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/2010032
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