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Control of decentralised solar district heating
Mälardalen University, Västerås, Sweden & Energianalys AB, Alingsås, Sweden.ORCID iD: 0000-0003-1965-0532
Department of Energy Sciences, Lund University, Lund, Sweden.ORCID iD: 0000-0003-4661-3155
Halmstad University, School of Business, Engineering and Science, The Rydberg Laboratory for Applied Sciences (RLAS).ORCID iD: 0000-0001-9069-0807
2019 (English)In: Solar Energy, ISSN 0038-092X, E-ISSN 1471-1257, Vol. 179, p. 307-315Article in journal (Refereed) Published
Abstract [en]

The purpose of decentralised solar district heating plants is to feed solar heat directly into district heatingnetworks. This decentralised heat supply has to consider two major output conditions: a stable required feed-insupply temperature and a feed-in heat power equal to the heat output from the solar collectors. However, manyinstallations cannot achieve the second output condition, since severe oscillations appear in the feed-in heatpower. This problem can be solved by two different control concepts with either temperature- or flow-control.Detailed measurements from two reference plants are provided for these two different control concepts. Onemain conclusion is that a robust control system is characterized by the ability to provide required flows andtemperatures. The major difference between robust and less robust control is that the supply temperatures and/or flows do not fluctuate even if the input conditions are unfavourable. © 2019 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
Oxford: Elsevier, 2019. Vol. 179, p. 307-315
Keywords [en]
Solar thermal, Feed-in systems, District heating, Control strategy, Prosumers
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:hh:diva-40906DOI: 10.1016/j.solener.2018.12.080ISI: 000458942300029Scopus ID: 2-s2.0-85059474876OAI: oai:DiVA.org:hh-40906DiVA, id: diva2:1369629
Funder
Knowledge Foundation
Note

Other funders: Industrial post-graduate school Reesbe & Fjarrsyn project (3314)

Available from: 2019-11-12 Created: 2019-11-12 Last updated: 2019-11-26Bibliographically approved

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Werner, Sven

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  • apa
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