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Lennermo, Gunnar
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Lennermo, G., Lauenburg, P. & Werner, S. (2019). Control of decentralised solar district heating. Solar Energy, 179, 307-315
Open this publication in new window or tab >>Control of decentralised solar district heating
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 heating networks. This decentralised heat supply has to consider two major output conditions: a stable required feed-in supply temperature and a feed-in heat power equal to the heat output from the solar collectors. However, many installations cannot achieve the second output condition, since severe oscillations appear in the feed-in heat power. 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. One main conclusion is that a robust control system is characterized by the ability to provide required flows and temperatures. 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. 

Place, publisher, year, edition, pages
Elsevier Ltd, 2019
National Category
Energy Engineering
Identifiers
urn:nbn:se:mdh:diva-42298 (URN)10.1016/j.solener.2018.12.080 (DOI)000458942300029 ()2-s2.0-85059474876 (Scopus ID)
Available from: 2019-01-10 Created: 2019-01-10 Last updated: 2019-03-07Bibliographically approved
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