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Heat losses and thermal performance of commercial combined solar and pellet heating systems
Dalarna University, School of Technology and Business Studies, Energy and Environmental Technology.
Dalarna University, School of Technology and Business Studies, Energy and Environmental Technology.
2004 (Undetermined)In: Eurosun 2004, Freiburg/Germany, 2004Conference paper, (Other academic) Published
Abstract [un]

Various pellet heating systems are marketed in Sweden, some of them in combination with a solar heating system. Several types of pellet heating units are available and can be used for a combined system. This article compares four typical combined solar and pellet heating systems: System 1 and 2 two with a pellet stove, system 3 with a store integrated pellet burner and system 4 with a pellet boiler. The lower efficiency of pellet heaters compared to oil or gas heaters increases the primary energy demand. Consequently heat losses of the various systems have been studied. The systems have been modeled in TRNSYS and simulated with parameters identified from measurements. For almost all systems the flue gas losses are the main heat losses except for system 3 where store heat losses prevail. Relevant are also the heat losses of the burner and the boiler to the ambient. Significant leakage losses are noticed for system 3 and 4. For buildings with an open internal design system 1 is the most efficient solution. Other buildings should preferably apply system 3. The right choice of the system depends also on whether the heater is placed inside or outside of the heated are. A large potential for system optimization exist for all studied systems, which when applied could alter the relative merits of the different system types.

Place, publisher, year, edition, pages
Freiburg/Germany, 2004.
Keyword [un]
Pellet heating systems, heat losses, flue gas losses, leakage losses
Identifiers
URN: urn:nbn:se:du-554OAI: oai:dalea.du.se:554DiVA: diva2:521308
Conference
Eurosun 2004 , Freiburg/Germany, June 2004, 2004
Available from: 2004-11-12 Created: 2004-11-12 Last updated: 2012-04-24Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • 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