Increasing efficiency and decreasing CO-emissions for a combined solar and wood pellet heating system for single-family houses

Document identifier: oai:dalea.du.se:2106
Keyword: Engineering and Technology, Other Engineering and Technologies, Other Engineering and Technologies not elsewhere specified, Teknik och teknologier, Annan teknik, Övrig annan teknik, Boilers, Efficiency, Emissions, Emission reduction
Publication year: 2006
Relevant Sustainable Development Goals (SDGs):

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

Abstract:

This study focus on how wood pellets and solar heating systems for single-family houses should be designed and controlled to reach high efficiency and to reduce the CO-emissions. A recently developed TRNSYS model was used to simulate the wood pellet boiler. Parameters for the model were identified from laboratory measurements on a boiler. A detailed simulation model of a complete solar combisystem was created and annual simulations were performed. Assuming that all heat losses to the room are waist heat, the results show that the most important factors to achieve high system efficiency are that the boiler and the buffer store should be well insulated. The sensor controlling the boiler should be placed in the store; the pump between the boiler and the store should only be in operation together with the burner and for some time after the burner have stopped to take care of the after burning heat. For boilers with relatively large start and stop CO-emissions modulating power may be an efficient measure to reduce CO-emissions. Especially for boilers using an ON-OFF control, the dominating contribution of CO-emissions may be during the start and stop phases, thus reducing emissions during operation may have little influence on the annual CO-emissions.

Authors

Tomas Persson

Högskolan Dalarna; Miljöteknik
Other publications >>

Frank Fiedler

Högskolan Dalarna; Miljöteknik
Other publications >>

Mats Rönnelid

Högskolan Dalarna; Miljöteknik
Other publications >>

Chris Bales

Högskolan Dalarna; Miljöteknik
Other publications >>

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    header: 
        identifier: oai:dalea.du.se:2106
        datestamp: 2021-04-15T14:31:33Z
        setSpec: SwePub-du
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                version: 3.7
            recordInfo: 
                recordContentSource: du
                recordCreationDate: 2006-05-16
            identifier: http://urn.kb.se/resolve?urn=urn:nbn:se:du-2106
            titleInfo: 
                @attributes: 
                    lang: eng
                title: Increasing efficiency and decreasing CO-emissions for a combined solar and wood pellet heating system for single-family houses
            abstract: 
This study focus on how wood pellets and solar heating systems for single-family houses should be designed and controlled to reach high efficiency and to reduce the CO-emissions. A recently developed TRNSYS model was used to simulate the wood pellet boiler. Parameters for the model were identified from laboratory measurements on a boiler. A detailed simulation model of a complete solar combisystem was created and annual simulations were performed. Assuming that all heat losses to the room are waist heat the results show that the most important factors to achieve high system efficiency are that the boiler and the buffer store should be well insulated. The sensor controlling the boiler should be placed in the store; the pump between the boiler and the store should only be in operation together with the burner and for some time after the burner have stopped to take care of the after burning heat. For boilers with relatively large start and stop CO-emissions modulating power may be an efficient measure to reduce CO-emissions. Especially for boilers using an ON-OFF control the dominating contribution of CO-emissions may be during the start and stop phases thus reducing emissions during operation may have little influence on the annual CO-emissions.

            subject: 
                    @attributes: 
                        lang: eng
                        authority: uka.se
                    topic: 
                        Engineering and Technology
                        Other Engineering and Technologies
                        Other Engineering and Technologies not elsewhere specified
                    @attributes: 
                        lang: swe
                        authority: uka.se
                    topic: 
                        Teknik och teknologier
                        Annan teknik
                        Övrig annan teknik
                    @attributes: 
                        lang: eng
                    topic: Boilers
                    @attributes: 
                        lang: eng
                    topic: efficiency
                    @attributes: 
                        lang: eng
                    topic: emissions
                    @attributes: 
                        lang: eng
                    topic: emission reduction
            language: 
                languageTerm: eng
            genre: 
                conference/other
                vet
            note: 
                Published
                4
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                        type: personal
                        authority: du
                    namePart: 
                        Persson
                        Tomas
                    role: 
                        roleTerm: aut
                    affiliation: 
                        Högskolan Dalarna
                        Miljöteknik
                    nameIdentifier: tpe
                    @attributes: 
                        type: personal
                        authority: du
                    namePart: 
                        Fiedler
                        Frank
                    role: 
                        roleTerm: aut
                    affiliation: 
                        Högskolan Dalarna
                        Miljöteknik
                    nameIdentifier: ffi
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                        type: personal
                        authority: du
                    namePart: 
                        Rönnelid
                        Mats
                    role: 
                        roleTerm: aut
                    affiliation: 
                        Högskolan Dalarna
                        Miljöteknik
                    nameIdentifier: mrd
                    @attributes: 
                        type: personal
                        authority: du
                    namePart: 
                        Bales
                        Chris
                    role: 
                        roleTerm: aut
                    affiliation: 
                        Högskolan Dalarna
                        Miljöteknik
                    nameIdentifier: cba
            originInfo: 
                dateIssued: 2006
                place: 
                    placeTerm: Jönköping Sweden
            relatedItem: 
                @attributes: 
                    type: host
                titleInfo: 
                    title: Proc. on USB of Pellets 2006 30 May - 1 June Jönköping Sweden
            location: 
                url: http://du.diva-portal.org/smash/get/diva2:521613/FULLTEXT01.pdf
            accessCondition: gratis
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                form: electronic
            typeOfResource: text