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Borna Doračić
Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia

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Journal article
Published: 20 March 2021 in Energy Conversion and Management
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District heating has already proven to be a suitable solution for the decarbonisation of the most energy intensive energy sector in Europe, heating and cooling. However, to achieve this, it needs to incorporate renewable and sustainable energy sources into the generation mix which is still dominated by fossil fuels in many countries. Alongside traditional renewables like solar thermal, geothermal and biomass, excess heat from the industrial and service sector has a high untapped potential. Nonetheless, to utilize it in district heating, third party access must be granted. For that reason, a wholesale day ahead heat market has been modelled in this study and validated on a case study in the city of Sisak in Croatia. The idea was twofold: to evaluate the functionality of such a heat market and its effect on the existing system, as well as to analyse the integration of high and low temperature excess heat sources in different conditions, including the use of thermal storage, as well as the competition with low-cost renewables, i.e. solar thermal. The results have shown that the introduction of a wholesale day ahead heat market would ensure the positive total welfare in all the scenarios. The benefit for the demand side and the total welfare would increase even more if excess heat sources are integrated in the system and especially if they are combined with a thermal storage to increase their capacity factor, which would also decrease the competing effect of solar thermal. Finally, it was shown that low temperature excess heat is not feasible in the high temperature district heating and the transfer to the 4th generation district heating is required to feasibly utilise low temperature sources.

ACS Style

Borna Doračić; Matija Pavičević; Tomislav Pukšec; Sylvain Quoilin; Neven Duić. Utilizing excess heat through a wholesale day ahead heat market – The DARKO model. Energy Conversion and Management 2021, 235, 114025 .

AMA Style

Borna Doračić, Matija Pavičević, Tomislav Pukšec, Sylvain Quoilin, Neven Duić. Utilizing excess heat through a wholesale day ahead heat market – The DARKO model. Energy Conversion and Management. 2021; 235 ():114025.

Chicago/Turabian Style

Borna Doračić; Matija Pavičević; Tomislav Pukšec; Sylvain Quoilin; Neven Duić. 2021. "Utilizing excess heat through a wholesale day ahead heat market – The DARKO model." Energy Conversion and Management 235, no. : 114025.

Journal article
Published: 23 April 2020 in Energy
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In areas with higher heat demand densities, district heating is the most logical way of achieving heat sector decarbonisation aims, especially when renewable energy or highly efficient cogeneration is used. However, excess heat from industry is also recognized as a valuable source with the high potential for utilization. It increases the economic and environmental viability of the system due to the low operation, investment and conventional energy costs. The main goal of this work was to define the effect of the main factors influencing the levelized cost of excess heat. The paper provided the feasibility of excess heat utilization in different district heating configurations, including solar collectors, cogeneration, peak load boilers, heat pumps and heat storages, showing that its overall utilization can be much lower than the expected 100% of the overall availability depending on the configuration. Furthermore, temperature levels of the excess heat source have been considered in the analysis to show changes in levelized cost of excess heat with different temperatures and the necessary preconditions for its utilization. It has been concluded that it is necessary to reduce the supply temperature of district heating in order to make the low temperature excess heat sources feasible.

ACS Style

Borna Doračić; Tomislav Pukšec; Daniel Rolph Schneider; Neven Duić. The effect of different parameters of the excess heat source on the levelized cost of excess heat. Energy 2020, 201, 117686 .

AMA Style

Borna Doračić, Tomislav Pukšec, Daniel Rolph Schneider, Neven Duić. The effect of different parameters of the excess heat source on the levelized cost of excess heat. Energy. 2020; 201 ():117686.

Chicago/Turabian Style

Borna Doračić; Tomislav Pukšec; Daniel Rolph Schneider; Neven Duić. 2020. "The effect of different parameters of the excess heat source on the levelized cost of excess heat." Energy 201, no. : 117686.

Journal article
Published: 07 March 2018 in Energies
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District heating plays a key role in achieving high primary energy savings and the reduction of the overall environmental impact of the energy sector. This was recently recognized by the European Commission, which emphasizes the importance of these systems, especially when integrated with renewable energy sources, like solar, biomass, geothermal, etc. On the other hand, high amounts of heat are currently being wasted in the industry sector, which causes low energy efficiency of these processes. This excess heat can be utilized and transported to the final customer by a distribution network. The main goal of this research was to calculate the potential for excess heat utilization in district heating systems by implementing the levelized cost of excess heat method. Additionally, this paper proves the economic and environmental benefits of switching from individual heating solutions to a district heating system. This was done by using the QGIS software. The variation of different relevant parameters was taken into account in the sensitivity analysis. Therefore, the final result was the determination of the maximum potential distance of the excess heat source from the demand, for different available heat supplies, costs of pipes, and excess heat prices.

ACS Style

Borna Doračić; Tomislav Novosel; Tomislav Pukšec; Neven Duić. Evaluation of Excess Heat Utilization in District Heating Systems by Implementing Levelized Cost of Excess Heat. Energies 2018, 11, 575 .

AMA Style

Borna Doračić, Tomislav Novosel, Tomislav Pukšec, Neven Duić. Evaluation of Excess Heat Utilization in District Heating Systems by Implementing Levelized Cost of Excess Heat. Energies. 2018; 11 (3):575.

Chicago/Turabian Style

Borna Doračić; Tomislav Novosel; Tomislav Pukšec; Neven Duić. 2018. "Evaluation of Excess Heat Utilization in District Heating Systems by Implementing Levelized Cost of Excess Heat." Energies 11, no. 3: 575.

Proceedings
Published: 01 January 2018 in Proceedings
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Workshop organized by INDIGO project as a collaborative activity among EU funded projects in the area of District Heating and Cooling. The objective of the workshop was twofold: (1) to create a cluster of European funded projects working in the area of District Energy Systems; and (2) to create a networking opportunity in which to share experiences on the results and difficulties of the researches, and to identify synergies.

ACS Style

Tatiana Loureiro; Miika Rämä; Raymond Sterling; Marco Cozzini; Meritxell Vinyals; Michael Descamps; Wolfgang Birk; Gozde Unkaya; Federica Fuligni; Borna Doračić; Marin Petrovic; Dominik Rutz; Inés Arias; Sofia Lettenbichler; Ioannis Meintanis; Serafeim Moustakidis; Martin Buchholz; Reiner Buchholz; Mathieu Provost; Philipp Geyer. District Energy Systems: A Collaborative Exchange of Results on Planning, Operation and Modelling for Energy Efficiency. Proceedings 2018, 2, 1127 .

AMA Style

Tatiana Loureiro, Miika Rämä, Raymond Sterling, Marco Cozzini, Meritxell Vinyals, Michael Descamps, Wolfgang Birk, Gozde Unkaya, Federica Fuligni, Borna Doračić, Marin Petrovic, Dominik Rutz, Inés Arias, Sofia Lettenbichler, Ioannis Meintanis, Serafeim Moustakidis, Martin Buchholz, Reiner Buchholz, Mathieu Provost, Philipp Geyer. District Energy Systems: A Collaborative Exchange of Results on Planning, Operation and Modelling for Energy Efficiency. Proceedings. 2018; 2 (15):1127.

Chicago/Turabian Style

Tatiana Loureiro; Miika Rämä; Raymond Sterling; Marco Cozzini; Meritxell Vinyals; Michael Descamps; Wolfgang Birk; Gozde Unkaya; Federica Fuligni; Borna Doračić; Marin Petrovic; Dominik Rutz; Inés Arias; Sofia Lettenbichler; Ioannis Meintanis; Serafeim Moustakidis; Martin Buchholz; Reiner Buchholz; Mathieu Provost; Philipp Geyer. 2018. "District Energy Systems: A Collaborative Exchange of Results on Planning, Operation and Modelling for Energy Efficiency." Proceedings 2, no. 15: 1127.

Journal article
Published: 01 December 2015 in Energy
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ACS Style

Dario Čulig-Tokić; Goran Krajacic; Borna Doračić; Brian Vad Mathiesen; Robert Krklec; Jesper Møller Larsen. Comparative analysis of the district heating systems of two towns in Croatia and Denmark. Energy 2015, 92, 435 -443.

AMA Style

Dario Čulig-Tokić, Goran Krajacic, Borna Doračić, Brian Vad Mathiesen, Robert Krklec, Jesper Møller Larsen. Comparative analysis of the district heating systems of two towns in Croatia and Denmark. Energy. 2015; 92 ():435-443.

Chicago/Turabian Style

Dario Čulig-Tokić; Goran Krajacic; Borna Doračić; Brian Vad Mathiesen; Robert Krklec; Jesper Møller Larsen. 2015. "Comparative analysis of the district heating systems of two towns in Croatia and Denmark." Energy 92, no. : 435-443.