Design and fabrication of a portable Fresnel reflector

Document identifier: oai:dalea.du.se:2263
Publication year: 2006
Abstract:

This paper presents a feasibility study of a portable Fresnel reflector that was designed and constructed using inexpensive materials and then tested. An aluminium plastic laminated reflector was chosen for its cost, reflectance and flexibility. The prototype Fresnel reflector had nine rings of 5 cm width held in place by a lightweight wooden construction, giving a diameter of 1.05 m. All rings and wooden holders can be assembled and disassembled and be stored in a small bag. In the tests, a piece of steel was used as receiver. Two different types of surface on the receiver were tested, namely Maxorb sheet and black paint. The tests showed that the Maxorb achieved a stagnation temperature of above 500 °C while the black paint achieved less than 400 °C. The optical efficiency for both was 0.26. Moreover, the collector could remain unadjusted for a duration of 35 minutes without the receiver temperature dropping lower than 300°C at the center.

Authors

Lim Say Yong

Other publications >>

Chris Bales

Högskolan Dalarna; Miljöteknik
Other publications >>

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    header: 
        identifier: oai:dalea.du.se:2263
        datestamp: 2021-04-15T12:29:00Z
        setSpec: SwePub-du
    metadata: 
        mods: 
            @attributes: 
                version: 3.7
            recordInfo: 
                recordContentSource: du
                recordCreationDate: 2006-08-21
            identifier: http://urn.kb.se/resolve?urn=urn:nbn:se:du-2263
            titleInfo: 
                @attributes: 
                    lang: eng
                title: Design and fabrication of a portable Fresnel reflector
            abstract: 
This paper presents a feasibility study of a portable Fresnel reflector that was designed and constructed using inexpensive materials and then tested. An aluminium plastic laminated reflector was chosen for its cost reflectance and flexibility. The prototype Fresnel reflector had nine rings of 5 cm width held in place by a lightweight wooden construction giving a diameter of 1.05 m. All rings and wooden holders can be assembled and disassembled and be stored in a small bag.\nIn the tests a piece of steel was used as receiver. Two different types of surface on the receiver were tested namely Maxorb sheet and black paint. The tests showed that the Maxorb achieved a stagnation temperature of above 500 °C while the black paint achieved less than 400 °C. The optical efficiency for both was 0.26. Moreover the collector could remain unadjusted for a duration of 35 minutes without the receiver temperature dropping lower than 300°C at the center.

            language: 
                languageTerm: eng
            genre: 
                conference/other
                vet
            note: 
                Published
                2
            name: 
                    @attributes: 
                        type: personal
                    namePart: 
                        Yong
                        Lim Say
                    role: 
                        roleTerm: aut
                    @attributes: 
                        type: personal
                        authority: du
                    namePart: 
                        Bales
                        Chris
                    role: 
                        roleTerm: aut
                    affiliation: 
                        Högskolan Dalarna
                        Miljöteknik
                    nameIdentifier: cba
            originInfo: 
                dateIssued: 2006
                place: 
                    placeTerm: Glasgow UK
            relatedItem: 
                @attributes: 
                    type: host
                titleInfo: 
                    title: Eurosun 2006
            physicalDescription: 
                form: print
            typeOfResource: text