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Updated: Jun 30, 2025

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production

Published on: June 15, 2014

District heating system's development decarbonization strategy assessment by system dynamics modeling and

Janis Edmunds Daugavietis¹, Jelena Ziemele²

¹Institute of Microbiology and Biotechnology, University of Latvia, Jelgavas Street 1, Riga, Latvia.

Journal of Environmental Management

|March 24, 2024

Summary

This study models District Heating (DH) decarbonization pathways using system dynamics and multi-criteria analysis. It ranks scenarios for transitioning to 4th Generation DH (4GDH) systems, guiding sustainable energy development.

Keywords:

4th generation district heating Decarbonization District heating system Multi-criteria analysis Sustainability assessment TOPSIS

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Area of Science:

Energy Systems Engineering
Environmental Science
Operations Research

Background:

District Heating (DH) systems face increasing pressure to decarbonize.
Transitioning to sustainable energy sources is crucial for environmental and economic viability.
Existing DH models often lack integrated sustainability assessments.

Purpose of the Study:

To develop and apply a hybrid model integrating system dynamics and multi-criteria analysis for DH decarbonization.
To evaluate various transition strategies towards a 4th Generation DH (4GDH) system.
To rank decarbonization pathways based on sustainability indicators for decision-making.

Main Methods:

System dynamics modeling to simulate energy, economic, and environmental indicators until 2050.
Exploration of four decarbonization strategies for 4GDH systems (RES, waste heat, cogeneration, combined).
Multi-criteria analysis using the TOPSIS method to evaluate scenario sustainability.

Main Results:

A ranking of DH transition pathways based on comprehensive sustainability scores was established.
Scenarios were benchmarked against a carbon-neutral DH system target.
The hybrid model provides a quantitative framework for assessing DH decarbonization.

Conclusions:

The hybrid model effectively guides decision-makers in selecting optimal DH decarbonization strategies.
Integration of renewable energy sources, waste heat, and energy efficiency measures are key for sustainable 4GDH.
The study provides a practical framework applicable to real-world DH system development, exemplified by Riga.