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General Information
    • ISSN: 1793-8236 (Online)
    • Abbreviated Title Int. J. Eng. Technol.
    • Frequency:  Quarterly 
    • DOI: 10.7763/IJET
    • Managing Editor: Ms. Jennifer Zeng
    • Abstracting/ Indexing: Inspec (IET), CNKI Google Scholar, EBSCO, ProQuest, Crossref, Ulrich Periodicals Directory, Chemical Abstracts Services (CAS), etc.
    • E-mail: ijet_Editor@126.com
Editor-in-chief
IJET 2018 Vol.10(6): 487-491 ISSN: 1793-8236
DOI: 10.7763/IJET.2018.V10.1107

Validation Study for Daylight Dynamic Metrics by Using Test Cells in Mediterranean Area

M. A. Campano, I. Acosta, A. L. León, and C. Calama

Abstract—This paper presents the validation of two daylight dynamic predictive metrics, obtained through simulation with DaySim 3.2 tool: Daylight Autonomy (DA) and Continuous Daylight Autonomy (DAC). To that effect, a validation protocol is developed, in which the annual results of the predictive simulation model are compared to the illuminance values measured during a whole year into an existing test cell, located in Seville (Spain), which is used as a reference. After trials it was found that, for three illuminance thresholds of 100, 250 and 500 lux, the mean difference of daylight autonomy between measurements and dynamic simulations is lower of 2% with a standard deviation of 6.8%, and the mean difference for continuous daylight autonomy is 1.0% with a standard deviation of 4.9%. It is concluded that the use of these two metrics by calculation with DaySim tool is adequate for small-sized rooms with one window, located in the Mediterranean area. The exposed methodology allows to validate the use of these indicators in rooms with variable size, window size and location, so further investigation is required.

Index Terms—Daylight autonomy, field experiments, energy saving, useful daylight illuminance, window.

M. A. Campano, I. Acosta, A. L. León and C. Calama are with the Department of Building Construction I, Universidad de Sevilla, Spain (e-mail: mcampano@us.es, iacosta@us.es, leonr@us.es and ccalama@us.es).

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Cite: M. A. Campano, I. Acosta, A. L. León, and C. Calama, "Validation Study for Daylight Dynamic Metrics by Using Test Cells in Mediterranean Area," International Journal of Engineering and Technology vol. 10, no. 6, pp. 487-491, 2018.

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