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Diffuse Daylight Autonomy – what is it?

If we want to live comfortably, but also healthily, we should study, read, work in sufficiently bright rooms. Within the scheme of the project Multi-Comfort Saint-Gobain, it is recommended that at least in 60% of time between 8:00 a.m. and 6:00 p.m. throughout the year the average light intensity in rooms should be at least 300 lux. The calculation is climate-based (Diffuse Daylight Autonomy):

  • The daylight autonomy is calculated on the basis of the cumulated horizontal distribution of disused lighting outside (weather data corresponding to the location of the building, the annual basis, hourly changes).
  • The sky asymmetry will be taken into account by means of indicative factors. The use of the room (schedule) can be modified according to the function of the space.
  • These calculations enable to get to know the capacity of satisfying illumination-related needs by means of diffused daylight coming from the sky (the sun that shines directly on the interiors is not taken into account in this calculation).

By using the DIAL + software we verify whether a given room has a sufficient amount of natural daylight to be recognised as comfortable. We predominantly focus on living rooms and children’s bedrooms.

Our results will have a form of a report, the most important part of which will be the light intensity distribution in the defined period. We can change many elements, such as obstacles blocking out windows, the colour of the floor, the walls, interior design, and many, many others.

Currently we have climatic data for the following locations: Bydgoszcz, Gdansk, Krakow, Poznan, Szczecin, Warsaw, Wroclaw, and the calculations will be performed for one of these locations.

 

 

Calculations in the DIAL+ software are performed thanks to the group cooperation within the scheme of the the MULTIComfort programme, the objective of which is to promote the highest building standards for the improvement of living comfort.

Details on: www.saint-gobain.pl/multicomfort

See also:

What is light and why is it so important!
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Designing glazing units
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ECLAZ also stands for high level of energy efficiency
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Saint-Gobain

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I hereby give my consent for my personal data contained in this form to be processed by Saint-Gobain in order to receive an answer to the question asked, as well as for receiving via e-mail and telephone essential information on products and services accordingly with the contents of my enquiry.
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Saint-Gobain Innovative Materials Sp. z o.o., 42-520 Dąbrowa Górnicza, ul. Szklanych Domów 1 hereby informs that your personal data will be processed for the purposes of: providing an answer to the question asked, providing information on products and services, providing commercial information – depending on the consent you have expressed. You have the right to view and correct your personal data, as well as the right to demand that the personal data are no longer processed and to file an objection on conditions defined in relevant legal regulations. Personal data disclosure is voluntary.