Soiling of building envelope surfaces and its effect on solar reflectance - Part III: Interlaboratory study of an accelerated aging method for roofing materials

Sleiman, M.; Chen, S.; Gilbert, H. E.; Kirchstetter, T. W.; Berdahl, P.; Bibian, E. .; Bruckman, L. S.; Cremona, D.; French, R. H.; Gordon, D. A.; Emiliani, M.; Kable, L.; Martarelli, Milena; Paolini, R.; Prestia, M.; Renowden, J.; Revel, G. M.; Rosseler, O.; Shiao, M.; Terraneo, G.; Yang, T.; Yu, L.; Zinzi, M.; Akbari, H.; Levinson, R.; Destaillats, H.

doi:10.1016/j.solmat.2015.07.031

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A laboratorymethodtosimulatenaturalexposureofroofing materialshasbeenreportedina companion article.Inthecurrentarticle,wedescribe theresultsofaninternational,nine-participant interlaboratorystudy(ILS)conductedinaccordancewithASTMStandardE691-09toestablishthe precisionandreproducibilityofthisprotocol.Theacceleratedsoilingandweatheringmethodwas appliedfourtimesbyeachlaboratorytoreplicatecouponsof12productsrepresentingawidevariety of roofing categories(single-plymembrane,factory-appliedcoating(onmetal),baremetal, fieldappliedcoating,asphaltshingle,modified-bitumen capsheet,claytile,andconcretetile).Partici- pantsreportedinitialandlaboratory-agedvaluesofsolarreflectanceandthermalemittance.Mea- suredsolarreflectanceswereconsistentwithinandacrosseightofthenineparticipatinglabora- tories.Measuredthermalemittancesreportedbysix participantsexhibitedcomparableconsistency. Forsolarreflectance,theacceleratedagingmethodisbothrepeatableandreproduciblewithinan acceptablerangeofstandarddeviations:therepeatabilitystandarddeviation sr rangedfrom0.008to 0.015(relativestandarddeviationof1.2–2.1%)andthereproducibilitystandarddeviation sR ranged from0.022to0.036(relativestandarddeviationof3.2–5.8%). TheILSconfirmedthattheaccelerated aging methodcanbereproducedbymultipleindependentlaboratorieswithacceptableprecision. This studysupportstheadoptionoftheacceleratedagingpracticetospeedtheevaluationand performance ratingofnewcoolroofing materials.

Titolo:	Soiling of building envelope surfaces and its effect on solar reflectance - Part III: Interlaboratory study of an accelerated aging method for roofing materials
Autori:	Sleiman, M. Chen, S. Gilbert, H. E. Kirchstetter, T. W. Berdahl, P. Bibian, E. . Bruckman, L. S. Cremona, D. French, R. H. Gordon, D. A. Emiliani, M. Kable, L. MARTARELLI, MILENA Paolini, R. Prestia, M. Renowden, J. Revel, G. M. Rosseler, O. Shiao, M. Terraneo, G. Yang, T. Yu, L. Zinzi, M. Akbari, H. Levinson, R. Destaillats, H. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2015
Rivista:	SOLAR ENERGY MATERIALS AND SOLAR CELLS
Abstract:	A laboratorymethodtosimulatenaturalexposureofroofing materialshasbeenreportedina companion article.Inthecurrentarticle,wedescribe theresultsofaninternational,nine-participant interlaboratorystudy(ILS)conductedinaccordancewithASTMStandardE691-09toestablishthe precisionandreproducibilityofthisprotocol.Theacceleratedsoilingandweatheringmethodwas appliedfourtimesbyeachlaboratorytoreplicatecouponsof12productsrepresentingawidevariety of roofing categories(single-plymembrane,factory-appliedcoating(onmetal),baremetal, fieldappliedcoating,asphaltshingle,modified-bitumen capsheet,claytile,andconcretetile).Partici- pantsreportedinitialandlaboratory-agedvaluesofsolarreflectanceandthermalemittance.Mea- suredsolarreflectanceswereconsistentwithinandacrosseightofthenineparticipatinglabora- tories.Measuredthermalemittancesreportedbysix participantsexhibitedcomparableconsistency. Forsolarreflectance,theacceleratedagingmethodisbothrepeatableandreproduciblewithinan acceptablerangeofstandarddeviations:therepeatabilitystandarddeviation sr rangedfrom0.008to 0.015(relativestandarddeviationof1.2–2.1%)andthereproducibilitystandarddeviation sR ranged from0.022to0.036(relativestandarddeviationof3.2–5.8%). TheILSconfirmedthattheaccelerated aging methodcanbereproducedbymultipleindependentlaboratorieswithacceptableprecision. This studysupportstheadoptionoftheacceleratedagingpracticetospeedtheevaluationand performance ratingofnewcoolroofing materials.
Handle:	http://hdl.handle.net/11389/21319
Appare nelle tipologie:	1.1 Articolo in rivista

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