Diffuse reflectance of non-clear glass rd -- Algorithm 2.37

The reflectance of glass is required for calculations of the average reflectance of a room For non-clear glass the variation of diffuse reflectance rd with KL values less than 2.0 has been derived using the data of Petherbridge.

Input

Normal incidence KL value of the glass, KL

Equation

Source

Petherbridge(1) , Sharples(2)

References

1. Petherbridge P Transmission characteristics of window glasses and sun controls Sunlight and buildings: CIE Conference Bouwcentrum, Rotterdam 1967

2. Sharples S, Page J K and Souster C G Modelling the daylight levels produced in rectangular, side-lit rooms by vertical windows containing clear or body-tinted glazing Department of Building Science, University of Sheffield (1981)