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Energy Systems

Energy systems is one of the research areas within the Rydberg Laboratory for Applied Sciences (RLAS).

The research on Energy systems focuses on technologies for the utilization of renewable energy resources, specifically district heating, wind power and biogas production.

The research is multidisciplinary, with a foundation in physics and biology, for example mechanics, fluid mechanics, thermodynamics, acoustics, electricity and microbiology. Statistical methods are also essential, for example when analysing district heating scenarios.

District heating

The research on district heating within RLAS has been both productive and successful. The research considers district heating as an energy resource in a broad perspective, both in Sweden and globally.

The potential of district heating and cooling in a European context are examined, the economy of distribution and investments is studied, and a comprehensive database is being established. The future of district heating and cooling is also studied. In this context, analyses of population and demography are used to create maps and statistics for the European countries with the GIS tool. The analyses indicates where excess heat are available from power plants and industry, heat which may be utilized.

To better understand future heat demands, societal, economical and cultural aspects connected to the technology, acceptance and communication are important issues to study.

Wind power

The research on wind power within RLAS is primarily directed towards different aspects of vertical-axis wind turbines. This part of the research is conducted in cooperation with Uppsala University, which provides the group with access to a 200-kW vertical-axis wind turbine in Falkenberg. Based on experiments on this turbine, mechanisms for noise generation in this type of turbines, and influence of wind turbulence on performance are studied.

Conventional horizontal-axis wind turbines are also studied within RLAS, for example measurements of low frequency noise from wind farms.

Biogas

Biogas is an important renewable fuel that can be produced from manure and other organic excess or waste products. The biogas is doubly beneficial for the climate as it both replaces fossil fuels and reduces the methane emissions in agriculture if the manure is anaerobically digested before used as fertilizer.

The biogas research within RLAS focuses on optimizing usage of substrates and bio-fertilizers, and to present innovative solutions that can create profitability within the agricultural sector.

Henrik Lund, Sven Werner, Robin Wiltshire, Svend Svendsen, Jan Eric Thorsen, Frede Hvelplund, Brian Vad Mathiesen.

There is much discussion of the role of district heating in future systems using 100 per cent renewable energy. A new concept, fourth generation district heating (4GDH), can help district heating play an important part in matching heating or cooling requirements to future sources of heat. One important aspect is reducing the temperature in the district heating network, to make better use of various sources of heat.

Fredric Ottermo, Erik Möllerström, Anders Nordborg, Jonny Hylander, Hans Bernhoff.

Noise from conventional wind turbines may to some extent prevent a large expansion of wind power. The vertical axis wind turbine design shows a potential for lower noise levels, indicating a relevance for the design in the future expansion. In this study, the noise sources are located for a vertical axis design, and the underlying mechanisms are modelled. This may help us making the design even more silent.

Photo: Marie Mattsson

Marie Mattsson, Niklas Karlsson.

Biogas2020 is a project within the EU-programme Interreg Öresund-Kattegat-Skagerrak. The project focuses on a number of factors that contribute to positive developments in the production and use of biogas.

An important factor for both profitability and public benefits in the biogas sector is the development of new business models. We study which success factors are necessary, and the tools that can be used to create innovative business models. We draw our case studies from agricultural collaborations aimed at developing biogas clusters.

Sven Werner. Photo: Anders Andersson

Jonny Hylander

Marie Mattsson. Photo: Anders Andersson

Updated 2018-01-16