Combined solar and pellet heating systems
Studies of energy use and CO-emissions
Document identifier: oai:dalea.du.se:2482
Keyword: Pellet and solar heating systems,
CO-emissioinsPublication year: 2006Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: In this study 4 solar and pellet heating systems have been studied with the help of annual dynamic simulations. Two of the systems comprised a pellet stove and two systems were solar combisystems; one with a store integrated pellet burner, the other with a separate pellet boiler.
The aim was to evaluate their thermal performance and their CO-emissions. The systems have been modelled based on lab measurements of the single system components. The used models allow a detailed study of the dynamic behaviour of the systems.
The stove systems have the least primary energy consumption provided the auxiliary electricity is taken into account with a conversion factor of 100%. If the auxiliary electricity is taken into account with a conversion of 40% and/or the systems are placed in the heated area the combisystems need less or a similar amount of primary energy.
Modulating combustion power reduces the number of starts and stops and for most pellet units this reduces the total CO emissions. The obtained annual CO emissions are higher than the values obtained from the standard test methods. It was shown that the average emissions under realistic annual conditions were greater than the limit values of two Eco-labels.
The system performance can be significantly improved by a proper control of the pellet heater and by sizing the pellet heater according to the size of the peak space heating demand.
Based on these findings from the simulations two prototypes of a combined solar and pellet heating system has been designed, built and tested; one for the lab and one that has been installed in a demonstration house. The system is very compact and is suitable for detached houses with no heating room or little space for a heating system.
Authors
Frank Fiedler
Högskolan Dalarna; Miljöteknik
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identifier: oai:dalea.du.se:2482
datestamp: 2021-04-15T12:03:00Z
setSpec: SwePub-du
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recordContentSource: du
recordCreationDate: 2007-02-05
identifier: http://urn.kb.se/resolve?urn=urn:nbn:se:du-2482
titleInfo:
@attributes:
lang: eng
title: Combined solar and pellet heating systems
subTitle: Studies of energy use and CO-emissions
abstract: In this study 4 solar and pellet heating systems have been studied with the help of annual dynamic simulations. Two of the systems comprised a pellet stove and two systems were solar combisystems; one with a store integrated pellet burner the other with a separate pellet boiler. \nThe aim was to evaluate their thermal performance and their CO-emissions. The systems have been modelled based on lab measurements of the single system components. The used models allow a detailed study of the dynamic behaviour of the systems. \nThe stove systems have the least primary energy consumption provided the auxiliary electricity is taken into account with a conversion factor of 100%. If the auxiliary electricity is taken into account with a conversion of 40% and/or the systems are placed in the heated area the combisystems need less or a similar amount of primary energy. \nModulating combustion power reduces the number of starts and stops and for most pellet units this reduces the total CO emissions. The obtained annual CO emissions are higher than the values obtained from the standard test methods. It was shown that the average emissions under realistic annual conditions were greater than the limit values of two Eco-labels. \nThe system performance can be significantly improved by a proper control of the pellet heater and by sizing the pellet heater according to the size of the peak space heating demand. \nBased on these findings from the simulations two prototypes of a combined solar and pellet heating system has been designed built and tested; one for the lab and one that has been installed in a demonstration house. The system is very compact and is suitable for detached houses with no heating room or little space for a heating system.
subject:
@attributes:
lang: eng
topic: Pellet and solar heating systems
@attributes:
lang: eng
topic: CO-emissioins
language:
languageTerm: eng
genre:
publication/doctoral-thesis
vet
note:
Published
1
name:
@attributes:
type: personal
authority: du
namePart:
Fiedler
Frank
role:
roleTerm: aut
affiliation:
Högskolan Dalarna
Miljöteknik
nameIdentifier: ffi
originInfo:
dateIssued: 2006
publisher: Mälardalen University
place:
placeTerm: Västerås
relatedItem:
@attributes:
type: series
titleInfo:
title: Mälardalen University Press Dissertations
partNumber: 36
identifier: 1651-4238
physicalDescription:
form: print
typeOfResource: text