Method of application three-dimensional billiard systems in passive heating systems

In this article, the method of determining ray absorption ability by premises with insolation passive heating system by numerical experiments was studied. A heated premise (HP), having a translucent enclosure (TE), walls covered with a special smooth enclosure, was chosen as the object of study. The dynamics of the solar rays were studied as a billiard system and the reflection equations are given. Verification of result reliability was performed.