Surface temperature of wooden window frames under influence of solar radiation

Surface temperature of wooden window frames under influence of solar radiation

TNO Bouw
Castenmiller, C.J.J.

2004

Under influence of solar radiation the surface temperature of wooden window frames can reach values above 60 0C. High temperature can cause considerable tensions within the window frame; as a result joints can be cracked and rain water can penetrate into these joints. This penetration of rain water is often the start of considerable degradation of the window frame. Which surface temperatures can be reached depends on the colour of used paint and the orientation of the surface. The frame sill appears to be the surface that is most heated by solar radiation; window frames that are painted in a dark colour show the highest surface temperatures because of the relatively high absorption coefficient of dark coloured paints. Calculations with an dynamic model are made to predict which surface temperature can be reached on sunny days. It appears that surface temperatures up to more than 60 0C can be reached. To avoid these high surface temperatures light coloured paints are preferable.

Sun radiation
Surface temperature
Wooden window frames
Absorption
Color
High temperature effects
Solar radiation
Surface treatment
Wood products
Dark colors
Spring
Sun radiation
Wooden window frames
Windows
Absorption
High Temperature
Sun Light
Surface Temperature
Surface Treatment
Windows
Wood Products
Buildings and Infrastructure
Built Environment

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