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Path: Home » Indice Pubblicazioni » Convegni ATI - Accesso riservato soci CTI » CA - 61 - Perugia 2006 » Daylighting and ventilation using a d...

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Daylighting and ventilation using a dynamic skylight

Pubblicazione


Autore: A. Carbonari, F. Peron, N. Cereser

Collana: CA - 61 - Perugia 2006

Note:
This paper presents a dynamic skylight, for daylighting and ventilation in a medium size room. The device includes an heliostat with variable geometry, which can exploits direct or sky diffuse solar radiation as function of season and weather conditions. During winter the direct radiation, if present, is re-directed inside the room on diffusing ceiling. During summer device’s configuration is modified to allow the entrance of lone sky diffuse radiation that is required for daylighting. The direct radiation impinging on the exposed side of the device is used to create a solar stack effect, that contributes to air extraction and natural ventilation. Size of opening on roof, device’s geometry and control logic have been optimised by means of computer simulations for two Italian sites: Venezia and Trapani. Room’s energy balance takes into account of solar and internal gains.
Optimisation is aimed to minimise the total annual energy demand for climatisation and illumination.


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