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Techno-Economic Analysis of Solar Options for a Block Heating System
Dalarna University, School of Technology and Business Studies, Energy Technology. Chalmers University of Technology. (SERC)ORCID iD: 0000-0001-6692-9224
Dalarna University, School of Technology and Business Studies, Energy Technology.
Chalmers University of Technology.
2016 (English)In: Conference Proceedings: Eurosun 2016, Palma De Mallorca: International Solar Energy Society, 2016, , p. 16Conference paper, Published paper (Refereed)
Abstract [en]

An innovative small solar district heating system with one central heating plant and four solar substations has been built in Vallda Heberg, Sweden, to supply a new housing area with passive houses. The target solar fraction was 40% and the total system design, including heat distribution in the buildings, was based on previous experience and aimed to be simple and cost-effective. The main aim of this study was to determine whether the system can be designed in a more effective manner by change of distribution system and load density. TRNSYS models were calibrated against measured data and then used to predict the energy performance. Results indicate that lower distribution heat losses can be obtained by change to a distribution concept with lower operating temperatures, while potentially reducing cost. Changes in heat density cause reduced distribution losses and boiler supplied heat demand, with only minor effects on solar system yield.

Place, publisher, year, edition, pages
Palma De Mallorca: International Solar Energy Society, 2016. , p. 16
Keywords [en]
solar thermal, district heat, hot water circulation, simulation
National Category
Energy Systems
Research subject
Energy and Built Environments
Identifiers
URN: urn:nbn:se:du-30565DOI: 10.18086/eurosun.2016.05.12OAI: oai:DiVA.org:du-30565DiVA, id: diva2:1337542
Conference
Eurosun 2016, Palma de Mallorca (Spain), 11 – 14 October 2016
Projects
SHINE
Funder
EU, FP7, Seventh Framework Programme, 317085Available from: 2019-07-16 Created: 2019-07-16 Last updated: 2019-07-24Bibliographically approved

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Publisher's full texthttp://proceedings.ises.org/paper/eurosun2016/eurosun2016-0094-Andersen.pdf

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