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The heat load in district heating systems
Chalmers University of Technology.ORCID iD: 0000-0001-9069-0807
1984 (English)Doctoral thesis, monograph (Other academic)
Abstract [en]

This thesis considers the composition of the daily heat load in six Swedish district heating systems supplying heat for space heating and hot water supply. The analysis was performed by bringing together a heat load model and series of daily heat load observations covering periods ranging from five to eleven years.

The influences of transient heat transmission, solar gain, and wind infiltration are found to be significant but small. It is shown that a natural self control of water radiators affects the magnitude of these influences when the control systems are incomplete. The annual fraction of each heat load component, the composition of the heat load duration graph, and the long term changes in heat consumption are presented.

Furthermore, the heat load composition estimated facilitates future heat load simulations in order to quantify the outcome of various energy conservation measures with respect to reductions in design heat load and annual heat demand.

Place, publisher, year, edition, pages
Göteborg: Chalmers tekniska högskola , 1984. , 199 p.
, Doktorsavhandlingar vid Chalmers tekniska högskola, ISSN 0346-718X ; 496
Keyword [en]
District heating; heat load; simulation; solar gain; air infiltration; natural ventilation; distribution heat losses; regression analysis; control systems
National Category
Energy Engineering
URN: urn:nbn:se:hh:diva-24116ISBN: 91-7032-145-0OAI: diva2:676934
Public defence
1984-09-21, 10:15 (English)
Available from: 2013-12-13 Created: 2013-12-08 Last updated: 2014-03-05Bibliographically approved

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Werner, Sven
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