Heat in containers
The use of industrial exhaust heat will become a higher relevance in terms of energy supply in future, especially with the latest postulation of the European Commission: "20 % more energy efficiency, 20 % less CO2-emissions and 20 % higher amount of Renewable Energies". Nevertheless, the use of industrial exhaust heat for long distance heating is state of the art, but often such projects fail on the high distances between the heat source and potential heat customers.
With new developments in the heat storage technology, the so called "mobile latent heat storage systems", a long distance heating could enlarge over the technical and economic borders of a line-bounded heat supply. In the course of the presented study, market-ready systems were analysed in terms of their field of application with the use of industrial exhaust heat. The investigations were done at the example of the region of Brixlegg (Tyrol, Austria).
Core topics of the study are the survey of the technical, organisational and legal framework for the implementation of a latent heat storage system as well as the calculation of the economic benchmarks and the ecologic effects in different variants of application.
In the course of a workshop with potential heat customers in the selected region, criteria could be compiled at which the use of the "heat from the container" could be possible. On the basis of these discussions, enterprises could be found which were willing to analyse their existing heat supply systems in terms of an application of the mobile heat system. With this, a "model system" could be created for the region of Brixlegg.
With the investigations of the model system, generally valid statements could be extracted regarding the requirements of heat source, logistics and heat customers, which are necessary for an implementation of such a system. With these general statements a transfer of the project into other fields of application is possible. Further valuable statements could be raised in terms of possible organisational models and the profitability of the system. Additionally, also still existing difficulties could be termed.
The results of the presented study show, that mobile latent heat storage systems are able to be an ecologic, and under specific conditions also an economic addition to conventional long distance heating lines. Nevertheless, for a broad conversion there's further need of development, especially in the field of energy density of the containers and the temperature level. Because the heat costs of mobile latent heat storages react however substantially more stable to crude oil price fluctuations than for example the fuel oil price, a very high potential in the future can be attended to this form of heat supply.
DI (FH) Angela Hofmann
ATB/TBB Antennen°Umwelt°Technik und Technisches Büro Becker
Project or cooperation partner
- Montanwerke Brixlegg AG
- FHS Kufstein Tirol Bildungs-GmbH
- Energie Tirol
- Cluster Tirol Wellness
- Tiroler Zukunftsstiftung