Search results for "Daylight illuminance"

showing 2 items of 2 documents

Questionnaires and simulations to assess daylighting in Italian university classrooms for IEQ and energy issues

2021

Abstract Results from the DAYKE-Italy project are presented. An investigation on daylighting in eight classrooms in five Italian universities was carried out through a combined approach: an ad-hoc survey administered to students to investigate how they perceive daylight in classroom, and numerical simulations (DIVA + ALFA) to calculate a set of objective metrics (daylight, circadian, and energy-related). A sample of 542 questionnaires was collected through two sessions and the subjective judgments were correlated to objective metrics. Results from descriptive and statistical analyses showed: (i) the correlation was significant for all daylight metrics: among them, average daylight factor an…

Equivalent melanopic luxSample (statistics)DAYKE-Italy; DAYKE project; questionnaire survey; daylight in classrooms; daylight metrics; equivalent melanopic lux; statistical analyses.DAYKE-ItalyQuestionnaire surveyDaylight metricStatistical analysesStatisticsDaylightElectrical and Electronic EngineeringDaylight illuminanceCivil and Structural EngineeringMathematicsSettore ING-IND/11 - Fisica Tecnica AmbientaleDaylight in classroomMechanical EngineeringDAYKE-Italy; Questionnaire survey; Daylight in classrooms; Daylight metrics; Equivalent melanopic lux; Statistical analysesQuestionnaireBuilding and ConstructionDaylight metricsCombined approachStatistical analysesDAYKE-Italy; DAYKE project; Questionnaire survey; Daylight in classrooms; Daylight metrics; Equivalent melanopic lux; Statistical analysesDaylight factorDAYKE projectDaylight in classroomsDaylighting
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Modeling of light pipes for the optimal disposition in buildings

2019

A light pipe is an excellent solution to transport and distribute daylight into environments without or with little lighting, guaranteeing comfort inside the rooms. As stated in the literature, the evaluation of the performances of light pipes presents numerous complexities, making the work very difficult for technicians and designers. This study is aimed to present a methodology that is able to identify the potential of light pipes using indices such as daylight autonomy (DA), continuous daylight autonomy (DAc), and useful daylight illuminance (UDI). This paper presents an analysis of daylight obtained by several configurations of simple models of light pipes installed into a 5 &times

OptimizationControl and Optimizationdaylighting comfort020209 energy0211 other engineering and technologiesEnergy Engineering and Power Technology02 engineering and technologyDaylight indexdaylight autonomyLight pipelight pipe021105 building & constructionDaylighting comfort0202 electrical engineering electronic engineering information engineeringDaylightDAYSIMElectrical and Electronic EngineeringEngineering (miscellaneous)Daylight illuminanceDaylight autonomySettore ING-IND/11 - Fisica Tecnica AmbientaleRenewable Energy Sustainability and the EnvironmentIlluminanceAspect ratio (image)daylight indexLight pipesHorizontal position representationRadianceEnvironmental scienceVariable numberoptimizationEnergy (miscellaneous)Marine engineering
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