On the way towards smart energy supply in cities: The impact of interconnecting geographically distributed district heating grids on the energy system

D. F. Dominkovic, I. Bačeković, D. Sveinbjörnsson, A. S. Pedersen, G. Krajačić

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Abstract

A linear continuous optimization model with an hourly time resolution was developed in order to model the impact of subsequent interconnections of different DH grids. The municipality of Sønderborg was chosen for a case study and interconnections of five currently disconnected DH grids were assessed. Moreover, the impact of industrial waste heat on the DH supply was also assessed. In the reference year (2013) two out of four interconnections proved to be economically viable. The results for the future energy system (2029) showed that interconnecting geographically distributed DH grids reduces primary energy supply by 9.5%, CO2 emissions by 11.1% and total system costs by 6.3%. Inclusion of industrial waste heat in the fully interconnected DH grid reduced primary energy supply for an additional 3%, CO2 emissions for an additional 2.2% and total system costs for an additional 1.3%. The case of the future energy supply system with interconnected DH grids and installed industrial waste heat recuperation results in the lowest primary energy demand, emissions and costs. Finally, the benefits of the interconnected DH grid, in terms of system flexibility, CO2 emissions, total costs and energy efficiency, proved to be much greater in the future energy system.
Original languageEnglish
JournalEnergy
Volume137
Pages (from-to)941-960
ISSN0360-5442
DOIs
Publication statusPublished - 2017

Keywords

  • Local Communities
  • CO 2 emissions
  • Renewable energy systems
  • Energy system optimization
  • GIS
  • Zero carbon

Cite this

@article{65d73a7ebfea4e4c9b77d0d5d19d2c81,
title = "On the way towards smart energy supply in cities: The impact of interconnecting geographically distributed district heating grids on the energy system",
abstract = "A linear continuous optimization model with an hourly time resolution was developed in order to model the impact of subsequent interconnections of different DH grids. The municipality of S{\o}nderborg was chosen for a case study and interconnections of five currently disconnected DH grids were assessed. Moreover, the impact of industrial waste heat on the DH supply was also assessed. In the reference year (2013) two out of four interconnections proved to be economically viable. The results for the future energy system (2029) showed that interconnecting geographically distributed DH grids reduces primary energy supply by 9.5{\%}, CO2 emissions by 11.1{\%} and total system costs by 6.3{\%}. Inclusion of industrial waste heat in the fully interconnected DH grid reduced primary energy supply for an additional 3{\%}, CO2 emissions for an additional 2.2{\%} and total system costs for an additional 1.3{\%}. The case of the future energy supply system with interconnected DH grids and installed industrial waste heat recuperation results in the lowest primary energy demand, emissions and costs. Finally, the benefits of the interconnected DH grid, in terms of system flexibility, CO2 emissions, total costs and energy efficiency, proved to be much greater in the future energy system.",
keywords = "Local Communities, CO 2 emissions, Renewable energy systems, Energy system optimization, GIS, Zero carbon",
author = "Dominkovic, {D. F.} and I. Bačeković and D. Sveinbj{\"o}rnsson and Pedersen, {A. S.} and G. Krajačić",
year = "2017",
doi = "10.1016/j.energy.2017.02.162",
language = "English",
volume = "137",
pages = "941--960",
journal = "Energy",
issn = "0360-5442",
publisher = "Elsevier",

}

On the way towards smart energy supply in cities: The impact of interconnecting geographically distributed district heating grids on the energy system. / Dominkovic, D. F.; Bačeković, I.; Sveinbjörnsson, D.; Pedersen, A. S.; Krajačić, G.

In: Energy, Vol. 137, 2017, p. 941-960.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - On the way towards smart energy supply in cities: The impact of interconnecting geographically distributed district heating grids on the energy system

AU - Dominkovic, D. F.

AU - Bačeković, I.

AU - Sveinbjörnsson, D.

AU - Pedersen, A. S.

AU - Krajačić, G.

PY - 2017

Y1 - 2017

N2 - A linear continuous optimization model with an hourly time resolution was developed in order to model the impact of subsequent interconnections of different DH grids. The municipality of Sønderborg was chosen for a case study and interconnections of five currently disconnected DH grids were assessed. Moreover, the impact of industrial waste heat on the DH supply was also assessed. In the reference year (2013) two out of four interconnections proved to be economically viable. The results for the future energy system (2029) showed that interconnecting geographically distributed DH grids reduces primary energy supply by 9.5%, CO2 emissions by 11.1% and total system costs by 6.3%. Inclusion of industrial waste heat in the fully interconnected DH grid reduced primary energy supply for an additional 3%, CO2 emissions for an additional 2.2% and total system costs for an additional 1.3%. The case of the future energy supply system with interconnected DH grids and installed industrial waste heat recuperation results in the lowest primary energy demand, emissions and costs. Finally, the benefits of the interconnected DH grid, in terms of system flexibility, CO2 emissions, total costs and energy efficiency, proved to be much greater in the future energy system.

AB - A linear continuous optimization model with an hourly time resolution was developed in order to model the impact of subsequent interconnections of different DH grids. The municipality of Sønderborg was chosen for a case study and interconnections of five currently disconnected DH grids were assessed. Moreover, the impact of industrial waste heat on the DH supply was also assessed. In the reference year (2013) two out of four interconnections proved to be economically viable. The results for the future energy system (2029) showed that interconnecting geographically distributed DH grids reduces primary energy supply by 9.5%, CO2 emissions by 11.1% and total system costs by 6.3%. Inclusion of industrial waste heat in the fully interconnected DH grid reduced primary energy supply for an additional 3%, CO2 emissions for an additional 2.2% and total system costs for an additional 1.3%. The case of the future energy supply system with interconnected DH grids and installed industrial waste heat recuperation results in the lowest primary energy demand, emissions and costs. Finally, the benefits of the interconnected DH grid, in terms of system flexibility, CO2 emissions, total costs and energy efficiency, proved to be much greater in the future energy system.

KW - Local Communities

KW - CO 2 emissions

KW - Renewable energy systems

KW - Energy system optimization

KW - GIS

KW - Zero carbon

U2 - 10.1016/j.energy.2017.02.162

DO - 10.1016/j.energy.2017.02.162

M3 - Journal article

VL - 137

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JO - Energy

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