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dc.contributor.authorKotey, Nathan Amon
dc.contributor.authorWright, John L.
dc.contributor.authorCollins, Michael R. 18:04:15 (GMT) 18:04:15 (GMT)
dc.description© 2009, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. ( Published in ASHRAE Transactions 2009, vol. 115, part 1. For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAE’s prior written permission.en
dc.description.abstractSolar gain through fenestration constitutes a significant portion of peak cooling load and annual energy consumption in buildings. As such, any reduction in solar gain translates into savings associated with the cost of purchasing and operating cooling equipment. Shading devices in general, and roller blinds in particular, can be used to reduce solar gain appreciably. The performance of a roller blind is largely determined by its solar optical properties. In this study, an integrating sphere was used to obtain off-normal solar properties of six typical roller blind samples. Measurements were used to develop semi-empirical models for the off-normal beam-beam, beam-diffuse, and diffuse-diffuse solar optical properties. The models provide a means to calculate off-normal properties by adjusting known values of beam-beam transmittance (i.e., openness), beam-total transmittance, and beam-total reflectance measured at normal incidence. The properties that apply to normal incidence are readily obtained. Such models are valuable components of building energy simulation software.en
dc.description.sponsorshipNatural Sciences and Engineering Research Council || ASHRAE 1311-TRPen
dc.publisherAmerican Society of Heating, Refrigerating and Air-Conditioning Engineersen
dc.subjectRoller blinden
dc.titleDetermining Off-Normal Solar Optical Properties of Roller Blindsen
dcterms.bibliographicCitationKotey, N.A., Wright, J.L., Collins, M.R., "Determining Off-Normal Solar Optical Properties of Roller Blind Materials," ASHRAE Transactions, Vol. 115, Pt. 1, pp. 145-154, (2009)en
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen

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