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The CCCA Young Talent Prize wants to put the scientific achievements of young researchers in the limelight and reward them with the Young Talent award. Each year, the best academic publications are prized. In the context of the 21. Austrian Climate Convention (April 12th & 13th), the CCCA Young Talent Prize for the year of 2021 was awarded to Christoph Sejkora for his publication Exergy as Criteria for Efficient Energy Systems—A Spatially Resolved Comparison of the Current Exergy Consumption, the Current Useful Exergy Demand and Renewable Exergy Potential.

We congratulate on his excellent work!

 

Title: Exergy as Criteria for Efficient Energy Systems—A Spatially Resolved Comparison of the Current Exergy Consumption, the Current Useful Exergy Demand and Renewable Exergy Potential

Abstract:

The energy transition from fossil-based energy sources to renewable energy sources of an industrialized country is a big challenge and needs major systemic changes to the energy supply. Such changes require a holistic view of the energy system, which includes both renewable potentials and consumption. Thereby exergy, which describes the quality of energy, must also be considered. In this work, the determination and analysis of such a holistic view of a country are presented, using Austria as an example. The methodology enables the calculation of the spatially resolved current exergy consumption, the spatially resolved current useful exergy demand and the spatially resolved technical potential of renewable energy sources (RES). Top-down and bottom-up approaches are combined in order to increase accuracy. We found that, currently, Austria cannot self-supply with exergy using only RES. Therefore, Austria should increase the efficiency of its energy system, since the overall exergy efficiency is only at 34%. The spatially resolved analysis shows that in Austria the exergy potential of RES is rather evenly distributed. In contrast, the exergy consumption is concentrated in urban and industrial areas. Therefore, the future energy infrastructure must compensate for these spatial discrepancies.

Figure: Comparison of current exergy demand (DEB), service exergy demand (SEB) and technical exergy potential (TEP) per year in Austria. Right hand side: bar chart including all of Austria. Beige: potential is greater than demand. Turquoise: shortfall. (Source district boundaries: Statistics Austria - data.statistik.gv.at).

Authors: Christoph Sejkora, Lisa Kühberger, Fabian Radner, Alexander Trattner, Thomas Kienberger

Cooperations: HyCentA Research GmbH, Inffeldgasse 15, 8010 Graz

This project is partly funded by the Climate and Energy Fund and carried out within the program „Renewables 4 Industry“.

 

 

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