Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회논문집

Currently, systems that uses natural lighting to replace lighting is being developed, and energy calculations that take this into account is necessary to analyze effect. However, the energy analysis program ECO2, which is used in building energy evaluation in Korea, does not reflect natural lighting when calculating lighting energy. EN 15193-1: 2017 specifies the method of analyzing lighting energy reflecting natural lighting, so the analysis was conducted based on the algorithm. First, after establishing the natural lighting variable in the algorithm, different input values were set according to the conditions of the variable. And the result was derived through the simulation using Relux, a lighting energy analysis program that reflects the EN 15193 algorithm. After confirming the effect of natural lighting on energy calculation through the result, the degree to which each variable contributes to the final result was additionally analyzed. Multiple regression analysis was conducted with the SPSS program as a method, and through this, priorities between variables were derived. As a result of the analysis, it was confirmed that the influence was high in the order of window area ratio, shade coefficient, merchant room height, glass light transmittance, shading, and dimming. As a result of confirming how natural lighting variables are applied in the algorithm and their influence, natural lighting must be reflected in the review of lighting energy consumption.