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López-Lovillo, R.; Aguilar, T.; Domínguez-Amarillo, S.; Acosta, I.; Sendra, J. (2020, 1-3 de septiembre). User centered lighting environment. Assessing the variables for a biodynamic health enhanced control logic.

CONGRESO: Proc. of 35th PLEA CONFERENCE. SUSTAINABLE ARCHITECTURE AND URBAN DESIGN. Planning Post Carbon Cities.

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CIUDAD: A Coruña (España)

ABSTRACT:

An approach is proposed to assess the different parameters used for the feeding of a biodynamic lighting-control system for both the integration of natural and electrical lighting, prioritizing health and the ergonomics of users. Accordingly, variables that directly affect the Circadian Stimulus (CS) such as illuminance levels or SPD will be analysed. In addition, other parameters will also be considered in relation to the morphology of the building, task-oriented or dynamic and environmental factors. The CS will be used as a primary indicator of the impact of the room lighting in the health and the performance of users. A case study is developed in an Intensive Care Unit (ICU) where the care-workers have uninterrupted shifts of 12 hours 24/365. The models integrate natural and electrical lighting through five scenarios involving standard, dimmable and tuneable-white luminaires, and the impact in the Circadian Stimulus (CS) is assessed. Two locations with different type of sky conditions (Seville and London) are tested during winter and summer typical days. The results determine that both the luminous flux and the SPD have a significative impact on CS, so the use of tuneable luminaires presents another worthy potential to optimize CS levels synchronization into shift-time environments as ICU´s, since they allow both parameters to be regulated. The methodology has been proven to be adequate, although it is necessary to consider the use of other morphological or environmental variables.

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