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PrevPerformance Analysis of a Small-Scale Biogas-Based Trigeneration Plant: An Absorption Refrigeration System Integrated to an Externally Fired Microturbine10 October 2019NextBiodigestores tubulares. Guía de diseño y manual de instalación29 October 2019
  • Scientific publication
16/10/2019
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Management and design of biogas digesters: A non-calibrated heat transfer model

 

ELSEVIER, Bioresource Technology,  vol. 296, 122264, January 2020

Authors: S.Vilms Pedersen a ; J.Martí-Herrero c,d ; A.K.Singh b ; S.G.Sommer a ; S.D.Hafner a

a University of Southern Denmark, Department of Chemical Engineering, Biotechnology and Environmental Technology, 5230 Odense, Denmark
b University of Southern Denmark, Centre for Energy Informatics, 5230 Odense, Denmark
c Centre Internacional de Mètodes Numérics en Enginyeria (CIMNE), Building Energy and Environment Group, Terrassa, Barcelona, Spain
c Biomass to Resources Group, Universidad Regional Amazónica Ikiam, Va Tena-Muyuna, Km.7, Tena, Napo, Ecuador

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Abstract:

A thermal balance modeling framework is developed, based on heat transfer-resistance networks. The heat transfer model accounts for effects of digester- design, location and operation, including effects of solar irradiance, external heating and ambient climate. We demonstrate extendibility of the framework by using the model in dynamic simulations of substrate temperature for digesters comprising two very different designs. Digester designs modeled include fixed-dome, buried, uninsulated and unheated household digesters in Hanoi, Vietnam, and an industrial-scale anaerobic digester located at a wastewater treatment plant in Esbjerg, Denmark. The modeled temperature profiles were evaluated against measured substrate temperatures over long periods, from 7 months and up. For the two Hanoi digesters, root-mean-square-error were 1.43 °C and 0.92 °C, with Nash-Sutcliffe model efficiency coefficients (NS-C) of 0.87 and 0.93 respectively. For the industrial digester in Esbjerg root-mean-square-error was 0.48 °C with an NS-C of 0.94. The model was not calibrated prior simulation, suggesting good predictive performance.

Highlights:
  • Development of heat transfer model based on heat transfer-resistance networks.
  • Model includes ambient effects, digester design-, volume- and operation effects.
  • Dynamic simulations on digester designs ranging from household to industrial scale.
  • Validation with measured temperature profiles over long periods, up to 16 months.
  • Predictive power demonstrated without model calibration to training data.
  • Biodigesters
  • Jaime Martí-Herrero
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Publications

Book (10) Energy that matters (9) Manual (4) Scientific publication (33) Uncategorised (1) White paper (3)

Projects by Research Lines

Biodigesters (1) Data analytics (12) Demand response (3) Energy empowerment (6) Positive living (7) Renewable energy (2) Spin offs (2)

Publications by Researchers

Benedetto Grillone (8) Biodigesters (17) Daniel Pérez (3) Eloi Gabaldón (6) Fabio Renda (1) Florencia Lazzari (4) Gerard Laguna (1) Gerard Mor (19) Gonzalo Gamboa (2) Jaime Martí-Herrero (25) Jordi Carbonell (6) Jordi Cipriano (25) Jose Santos Lopez (1) Stoyan Danov (14) Xavier Cipriano (4)

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