Solar Radiation

Solar radiation absorbed, reflected, and transmitted by each element of the building is computed from solar data in the weather file. The calculation will resolve the radiation into direct and diffuse components and calculate the incident fluxes using a knowledge of sun position and empirical models of sky radiation. Absorption, reflection and transmission will be computed from the thermophysical properties of the building elements. There is an option to model external shading and track sun patches around room surfaces. Solar radiation entering a zone through transparent building components will fall on internal surfaces where it may be absorbed, reflected, or transmitted depending on the surfaces' properties. Distribution of reflected and transmitted solar radiation continues until all the radiation has been accounted for.

 

Factors Influencing Thermal Behaviour