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-emissioins
Publication year: 2006
Relevant Sustainable Development Goals (SDGs):

The SDG label(s) above have been assigned by OSDG.ai

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. 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
Other publications >>

Record metadata

Click to view metadata

	
    header: 
        identifier: oai:dalea.du.se:2482
        datestamp: 2021-04-15T12:03:00Z
        setSpec: SwePub-du
    metadata: 
        mods: 
            @attributes: 
                version: 3.7
            recordInfo: 
                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