BUILDING FACADE SURFACE FOR SEASONAL SELECTIVENESS OF SOLAR IRRADIATION ABSORPTION AND REFLECTION

摘要

Disclosed are various building facade surface configurations and related methods. An exemplary facade includes grooved cavities that are configured in a manner that reflects summer (cooling season) insolation and absorbs winter (heating season) insolation. The effective absorptivities of the exemplary facade for various cavity reflectance characteristics, i.e., a wide range of diffuse and specular reflectance characteristics, are evaluated using a Monte Carlo model. The calculations in an illustrated embodiment are performed for the latitude of 41° N where both heating and cooling loads are significant. Embodiments of facades and other structures are similarly within the scope of the disclosure for locations of different latitudes and longitudes.