Tubular daylighting devices. Part II : validation of the optical model (1415-RP)

Alternative titleTubular daylighting devices-Part II: validation of the optical model (1415-RP)
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DOIResolve DOI: http://doi.org/10.1080/10789669.2012.741501
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Journal titleHVAC and R Research
Pages557572; # of pages: 16
SubjectTubular daylighting; tubular skylight; lightpipe; skylight; light guide; optical model
AbstractThis article presents the development of a methodology to measure the visible transmittance of complex configurations of tubular daylighting devices under direct sunlight, and conducts a comparison study between the measurements and computer simulations using the new optical model developed in the first part of the study. A large integrating box was built and calibrated, and the procedure was benchmarked by comparing the measurement of a transparent glazing sample with the manufacturer data. Two commercially available tubular daylighting devices with prismatic and frosted elements built into the glazing and a custom-made tubular daylighting device with a complex pipe having roof and ceiling elbows were selected for the comparison study. The model predictions were overall in good agreement with the measurement for the tested tubular daylighting device configurations, and the sources of discrepancies were clearly identified.
Publication date
PublisherTaylor and Francis
AffiliationConstruction; National Research Council Canada
Peer reviewedYes
NRC number55257
NPARC number21268577
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Record identifier13c5a45a-b5b0-42e5-aae5-93c65ceac1dc
Record created2013-10-17
Record modified2016-05-09
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