du.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Combined Solar and Pellet Heating Systems for Houses: Improvement of Energy Efficiency and Reduction of Boiler ON/OFF cycling
Dalarna University, School of Technology and Business Studies, Energy and Environmental Technology.
2010 (English)In: Eurosun 2010, Graz, Austria, 2010Conference paper, Published paper (Other academic) Published
Abstract [en]

Annual simulations of combined solar and pellet combisystems have been performed based on measurements of two pellet boilers and a burner integrated into a solar thermal energy storage (TES). The results show that the investigated burner integration is more energy efficient in comparison with the external pellet boiler solution. The flue gas losses were the predominant losses measured for steady state burner operation, but heat losses to the ambient were predominant in the annual simulation results. The number of ON/OFF cycles of the pellet burner depends to a high degree on the control strategy implemented to adapt the power modulation to the current demand, and varied from almost 3000/a in the worst case to less than 900/a in the best case simulated. Based on parametric simulation studies, it was determined that the fractional energy savings of both systems could be increased fromaround 20% to 30% for a house with 4.6 kW heat load at climate Zurich without increasing the area of 10 m2 flat plate collectors or the TES volume of 850 litres. A comparison with a hypothetical TES of the tank-in-tank design showed additional potential for improvement due to a smaller area of the TES that has to be kept at high temperatures for DHW use.

Place, publisher, year, edition, pages
Graz, Austria, 2010.
Keyword [en]
solar combisystems pellet boiler on/off cycling
Research subject
Energi, skog och byggd miljö, SolNET
Identifiers
URN: urn:nbn:se:du-4993OAI: oai:dalea.du.se:4993DiVA: diva2:522184
Conference
Eurosun 2010 , Graz, Austria, 28 september - 1 oktober, 2010
Available from: 2010-10-13 Created: 2010-10-13 Last updated: 2012-04-24Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Bales, Chris
By organisation
Energy and Environmental Technology

Search outside of DiVA

GoogleGoogle Scholar

Total: 583 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf