THERMAL SCIENCE

International Scientific Journal

Édouard Walther

,

Renaud Ferrier

,

Rachid Bennacer

,

Caroline Desa

,

Eloïse Thierry

HEAT RECOVERY IN COMPOST PILES FOR BUILDING APPLICATIONS

ABSTRACT
This work proposes an estimation of the possible heat recovery of self-heating compost piles for building applications. The energy released during the aerobic composting of lignin and cellulose-based materials is computed by solving an inverse problem. The method consists first in an experimental phase with measurement of the temperature within the heap, then a numerical procedure allows for the inverse identification of the heat production due to the chemical reaction of composting. The simulation results show a good accordance with the experiments for the chosen source-term model. Comparing the results to the theoretical values for the energy released by aerobic composting provides an estimate for the efficiency of the reaction. The reached temperatures and recovered energy fit with the order of magnitude of building needs.
KEYWORDS
heat recovery, aerobic composting, inverse identification, lignin
PAPER SUBMITTED: 2016-04-11
PAPER REVISED: 2016-05-21
PAPER ACCEPTED: 2016-06-15
PUBLISHED ONLINE: 2016-12-03
DOI REFERENCE: https://doi.org/10.2298/TSCI160411299W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 2, PAGES [775 - 784]
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Heat recovery in compost piles for building applications

2025 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence