Calculation of View Factors for Building Simulations with an Open-Source Raytracing Tool

Longwave radiative heat transfer is a key determinant of energy consumption in buildings and view factor calculations are therefore required for the detailed simulation between their environment as well exchange within rooms. Typically, these either derived through analytical means or performed part process. This paper describes methodology employing RADIANCE, command-line open-source raytracing software, performing calculations. Since it was introduced late-1980s, RADIANCE has been almost exclusively employed back-end engine lighting simulations. We discuss theoretical basis calculating factors Monte Carlo with propose corresponding workflow. The results generated validated by comparing them solutions. fundamental proposed this can be scaled up to calculate more complex, practical scenarios. Furthermore, portability, multi-processing functionality cross-platform compatibility offered also calculation factors.