Entwicklung der industriellen Abwärme in ausgewählten Standorten

Translated title of the contribution: Development of industrial waste heat in selected locations

Christoph Singer

Research output: ThesisMaster's Thesis

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Abstract

As part of the "Heat Highway" project, funded by the Austrian Research Promotion Agency (FFG), this master's thesis examines the future availability of waste heat at nine selected locations from four different industrial sectors, as well as a gas compression station. These locations were chosen due to their classification within energy-intensive industries and their proximity to the planned "Heat Highway" along the Mur-Mürz Valley.
The aim of this thesis is to develop a methodology for representing the changes in available waste heat at the investigated sites up to the key year 2050.
To achieve this, thorough literature research was conducted on current roadmaps from Austrian and European industry associations, outlining planned strategies for mandatory industrial decarbonization by 2050. Based on the insights gained from this review, methodologies were then developed using various indicators to represent future changes in available waste heat. For the manufacturing industry, production volume emerged as the most effective indicator for waste heat quantity, while for the gas compression station studied, the amount of transported natural gas proved to be the relevant metric. Building on this approach, scenarios were subsequently developed to project changes in production volumes at each location. The current state results from the extensive "Industrial Excess Heat" project served as the basis for calculating the specific amounts of available waste heat in the form of potential waste heat at the investigated sites. By linking this initial data with the developed energy quantity scenarios and factoring in upcoming technological changes, as well as the general assumption of a fuel switch to hydrogen by 2050, concrete values for available waste heat were calculated for the target years 2030, 2040, and the key year 2050. Results are classified by temperature levels: below 50 °C, 50 – 100 °C, and above 100 °C, along with an additional categorization by energy sources used.
The results show a significant shift in the waste heat potential of the iron and steel industry, as well as for the gas compression station. The potential for the iron and steel industry is primarily influenced by upcoming changes in primary steel production at voestalpine Donawitz. With the discontinuation of the sinter plant, blast furnaces, steelworks, and the thermal power plants that process coke oven gases, the technical waste heat potential is projected to decrease from approximately 1600 GWh/a in 2019 to about 326 GWh/a by 2050.
For the gas compression station, the decline is driven by the expected reduction in natural gas consumption across Europe. This will lower throughput at the compressor station, reducing its technical waste heat potential from around 320 GWh/a in the base year 2019 to about 65 GWh/a in 2050. In the pulp and paper industry, the switch from natural gas to hydrogen as an energy source will slightly decrease the technical potential, from approximately 3500 GWh/a to around 3160 GWh/a. Meanwhile, the technical potential of the cement industry is influenced by the planned reduction in clinker content by 2040, leading to a decrease from about 100 GWh/a to approximately 70 GWh/a.
Finally, the calculated technical potentials were adjusted to the boundary conditions of the Heat Highway and combined with the gathered insights into a roadmap. For the Heat Highway, the use of heat pumps, with a bad COP of about 2.5 in low- and medium-temperature applications was considered. Based on these boundary conditions, it is projected that by 2050, approximately 7,100 GWh of waste heat from industry will be available.
Translated title of the contributionDevelopment of industrial waste heat in selected locations
Original languageGerman
QualificationDipl.-Ing.
Awarding Institution
  • Montanuniversität
Supervisors/Advisors
  • Steinegger, Josef, Co-Supervisor (internal)
  • Kienberger, Thomas, Supervisor (internal)
Award date20 Dec 2024
DOIs
Publication statusPublished - 2024

Bibliographical note

no embargo

Keywords

  • Heat Highway
  • waste heat potential
  • energy
  • efficiency
  • scenarios
  • industrial excess heat

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