Supra-Regional District Heating Networks: A Missing Infrastructure for a Sustainable Energy System

In analogy to electricity transmission networks, this paper analyzes the concept of supra-regional district heating networks (SR-DHN), connecting a large number of actors. Using a back-casting approach, a SR-DHN is assumed to exist and thus, implementation challenges, such as economic feasibility an...

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Main Authors: Simon Moser, Stefan Puschnigg
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/12/3380
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author Simon Moser
Stefan Puschnigg
author_facet Simon Moser
Stefan Puschnigg
author_sort Simon Moser
collection DOAJ
description In analogy to electricity transmission networks, this paper analyzes the concept of supra-regional district heating networks (SR-DHN), connecting a large number of actors. Using a back-casting approach, a SR-DHN is assumed to exist and thus, implementation challenges, such as economic feasibility and energy losses, are circumvented in the first step (but are analyzed in the discourse). The paper then analyzes, in an interdisciplinary qualitative manner and supported by a case study, what technical, operational, economic and legal issues must have been resolved. Results show that the heat transmission network, being the backbone of the SR-DHN, is an expensive infrastructure, but is likely to become economic in a non-fossil energy system. By decreasing the reliance on single waste heat sources, SR-DHN allows longer payback periods and can thus be an enabler for using industrial waste heat. However, involving many actors requires comprehensive contractual foundations. The derived hypothesis is that SR-DHN, which is predominantly fed by waste heat, shall be operated with lower temperatures in winter (feeding the return while minimizing expensive winter losses) and high temperatures in summer (enabling alternative usages while accepting high but inexpensive summer losses).
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spelling doaj.art-d81f13187c7547cd904177e7806385172023-11-21T23:16:44ZengMDPI AGEnergies1996-10732021-06-011412338010.3390/en14123380Supra-Regional District Heating Networks: A Missing Infrastructure for a Sustainable Energy SystemSimon Moser0Stefan Puschnigg1Department of Energy Economics, Energy Institute at the Johannes Kepler University, A-4040 Linz, AustriaDepartment of Energy Technology, Energy Institute at the Johannes Kepler University, A-4040 Linz, AustriaIn analogy to electricity transmission networks, this paper analyzes the concept of supra-regional district heating networks (SR-DHN), connecting a large number of actors. Using a back-casting approach, a SR-DHN is assumed to exist and thus, implementation challenges, such as economic feasibility and energy losses, are circumvented in the first step (but are analyzed in the discourse). The paper then analyzes, in an interdisciplinary qualitative manner and supported by a case study, what technical, operational, economic and legal issues must have been resolved. Results show that the heat transmission network, being the backbone of the SR-DHN, is an expensive infrastructure, but is likely to become economic in a non-fossil energy system. By decreasing the reliance on single waste heat sources, SR-DHN allows longer payback periods and can thus be an enabler for using industrial waste heat. However, involving many actors requires comprehensive contractual foundations. The derived hypothesis is that SR-DHN, which is predominantly fed by waste heat, shall be operated with lower temperatures in winter (feeding the return while minimizing expensive winter losses) and high temperatures in summer (enabling alternative usages while accepting high but inexpensive summer losses).https://www.mdpi.com/1996-1073/14/12/3380district heatingwaste heatenergy cooperationindustrial symbiosis
spellingShingle Simon Moser
Stefan Puschnigg
Supra-Regional District Heating Networks: A Missing Infrastructure for a Sustainable Energy System
Energies
district heating
waste heat
energy cooperation
industrial symbiosis
title Supra-Regional District Heating Networks: A Missing Infrastructure for a Sustainable Energy System
title_full Supra-Regional District Heating Networks: A Missing Infrastructure for a Sustainable Energy System
title_fullStr Supra-Regional District Heating Networks: A Missing Infrastructure for a Sustainable Energy System
title_full_unstemmed Supra-Regional District Heating Networks: A Missing Infrastructure for a Sustainable Energy System
title_short Supra-Regional District Heating Networks: A Missing Infrastructure for a Sustainable Energy System
title_sort supra regional district heating networks a missing infrastructure for a sustainable energy system
topic district heating
waste heat
energy cooperation
industrial symbiosis
url https://www.mdpi.com/1996-1073/14/12/3380
work_keys_str_mv AT simonmoser supraregionaldistrictheatingnetworksamissinginfrastructureforasustainableenergysystem
AT stefanpuschnigg supraregionaldistrictheatingnetworksamissinginfrastructureforasustainableenergysystem