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District heating in future Europe: Modelling expansion potentials and mapping heat synergy regions

Urban Persson (Institutionen för energi och miljö, Energiteknik)
Göteborg : Chalmers University of Technology, 2015. ISBN: 978-91-7597-088-2.- 90 s.
[Doktorsavhandling]

This thesis presents a set of methodologies and approaches to investigate and determine the extent by which district heating can contribute to improved energy system efficiency and reduced carbon dioxide emissions in future Europe. The main motivation for suggesting large-scale implementation of district heating as a structural energy efficiency measure to obtain these objectives originates essentially in the predicament that a majority of European buildings today remain highly dependent on fossil fuels to provide energy needed for space heating and hot water preparation. In parallel, vast annual volumes of rejected excess heat from European power plants and industries are mainly neglected and lost unutilised to the ambient surroundings, why extended recovery and utilisation of such secondary energy assets realistically could replace significant shares of current inefficient supplies by fuel substitution. A prerequisite, however, for the viability of this logical prospect, is that infrastructures by which to facilitate excess heat recovery and subsequent network heat distribution are in place, which by no means is the average case in contemporary Europe. Hereby, the investigation is structured orderly by first establishing whether district heating can be a competitive alternative on current urban European heat markets, facilitated by a distribution capital cost model, where after the energy systemic benefits of expanding district heating are characterised and used to estimate a plausible expansion potential based on comparative analysis. Next, energy system modelling of continental EU27 by the year 2050, with district heating expanded in alignment with this potential, is performed to assess the total energy system cost benefits relative an alternative scenario focusing mainly on individual energy efficiency measures. Finally, spatial mapping to identify current primary target regions from which large-scale implementation of district heating could emanate is conceived and performed by use of a geographical information systems interface. The findings are generally supportive of a realisation of the objectives, mainly so by establishing a three-fold directly feasible expansion potential for district heating in city areas, but recognise also several additional, mainly non-technical, issues and challenges necessary to address in a successful transition to more energy efficient supply structures in future Europe.

Nyckelord: district heating, energy efficiency, distribution capital cost, heat demand density, plot ratio, excess heat recovery, sequential energy supply, heat utilisation rate, effective width



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Denna post skapades 2014-12-05. Senast ändrad 2015-07-28.
CPL Pubid: 207521

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Energiteknik

Ämnesområden

Samhällsbyggnad
Energi
Hållbar utveckling
Energiteknik

Chalmers infrastruktur

Examination

Datum: 2015-01-08
Tid: 10:00
Lokal: Hörsal HC3, Hörsalsvägen 14
Opponent: Prof. Lars J. Nilsson

Ingår i serie

Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie 3769