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Viability of district heating networks in temperate climates: Benefits and barriers of cold and warm temperature networks
Halmstad University, School of Business, Innovation and Sustainability.ORCID iD: 0000-0002-6369-2222
Halmstad University, School of Business, Innovation and Sustainability.ORCID iD: 0000-0003-2885-0923
Halmstad University, School of Business, Innovation and Sustainability.ORCID iD: 0000-0001-9118-4375
TECNALIA, Basque Research and Technology Alliance (BRTA), Derio, Spain.ORCID iD: 0000-0001-8805-0392
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2023 (English)In: Book of Abstracts: 9th International Conference on Smart Energy Systems / [ed] Lund, Henrik; Mathiesen, Brian Vad; Østergaard, Poul Alberg; Brodersen, Hans Jørgen, Aalborg, 2023, p. 280-281Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

The decarbonization of the heat supply and the attainment of a higher security of supply demand the transition towards zero-carbon heating solutions. In dense urban environments, where the construction cost of a pipe network is relatively low, heating and cooling networks can deliver heating and cooling at a lower cost compared to individual solutions. 

This paper builds on prior research by these authors mapping heating and cooling energy use in Bilbao, Spain, a city characterised by mild oceanic climate and a dense urban pattern. Areas within the city where heating and cooling networks could be more feasible have been identified taking into account the building stock characteristics and energy use, together with other urban and resource parameters, and a city district has been selected for further study.      

Warm networks deliver heat at a sufficiently high temperature to be directly used by the consumers whereas cold networks employ lower temperatures, thus requiring heat pumps at the consumers premises. Research has highlighted as advantages of this newer configuration the possibility of delivering both heating and cooling with the same network, the lower capital costs of these networks and negligible heat losses. Nonetheless, comparisons between the two technologies have been seldom performed in the literature. In this paper, an economic comparison between these two solutions is presented for the selected district of Bilbao.  Results show that cold networks require a lower investment in the actual network infrastructure but the distributed heat pumps increase the costs to a higher total CAPEX than in warm networks.  Overall life cycle costs of heat are also slightly higher for cold networks than for warm networks. Other benefits and barriers for each of the solutions, for example regarding necessary space or speed and modularity of the implementation of the network are also discussed.

Place, publisher, year, edition, pages
Aalborg, 2023. p. 280-281
Keywords [en]
District Heating, Warm Network, Cold Network, Distribution Technology, Heat Density
National Category
Energy Engineering
Research subject
Smart Cities and Communities
Identifiers
URN: urn:nbn:se:hh:diva-51640OAI: oai:DiVA.org:hh-51640DiVA, id: diva2:1797581
Conference
9th International Conference on Smart Energy Systems, Copenhagen, Denmark, 12-13 September, 2023
Projects
Decarb City Pipes 2050 - Transition roadmaps to energy efficient, zero-carbon urban heating and cooling
Funder
EU, Horizon 2020, 893509Available from: 2023-09-15 Created: 2023-09-15 Last updated: 2023-09-28Bibliographically approved

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Book of Abstracts

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Sánchez-García, LuisAverfalk, HelgePersson, Urban

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Sánchez-García, LuisAverfalk, HelgePersson, UrbanHermoso-Martínez, NekaneHernández-Iñarra, Patxi
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