Simulating Daylighting and Energy Demand for Lighting of Buildings with Different Models and Programs: Analysis of Influencing Factors and Comparison of Results

The calculation of the energy demand for lighting, including the daylight provision, is a key aspect of the process to assess the energy performance of a building. This paper compares a simplified model, from the European Standard EN 15193:2017, and a dynamic simulation tool, DIVA-for-Rhino. Both tools are designed to calculate climate-based daylighting conditions and the consequent energy demand for lighting. The two approaches were applied to a set of case studies. An analysis of correspondences and discrepancies of the methods and of the results is presented.