Down the tube – tubular skylight systems


A tubular skylight consists of a transparent dome located outside the building, collecting light and directing it into a tube with a highly reflective surface. The tube conducts the light to the required room, where it is distributed by a diffuser mounted on the end of the tube. The Building Research Establishment has published "Measurements of the Transmittance of Light Pipes", in which the transmittance efficiencies of the three most frequently specified tubular skylights in the UK are compared. The use of daylight instead of artificial lighting not only gives cost savings, but also improves the health, well-being and productivity of the building's occupants.

Source: Build.Serv.J.

             Vol.25, No.9, 2003, p.49-50


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