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A robust estimation of aged solar reflectance? ASTM D 7897-15

For building energy simulations, micro- and meso- climate modelling, environmental rating schemes, structural applications, etc. everybody needs a sound value for the aged optical-radiative properties of built surfaces. Product development needs it too. Getting the answer from natural ageing might take years… so what? One may get a reliable and sound estimate with the accelerated weathering and… Read more »