INTEGRATIVE LIGHTING DESIGN OF PUBLIC BUILDINGS

The International Commission on Illumination has identified lighting as one of the key sustainable development goals, contributing to better health and well-being for people, which is related to the concept of integrated lighting. Given the significant amount of time spent indoors in public buildings, incorporating the non-visual effects of light into the requirements system when designing lighting systems for them is one way to implement sustainable lighting design. The main aspects of integrative lighting design of modern public buildings has been highlighted in the article. To describe the parameters of the non-visual effects of lighting on a person, the CIE has proposed a system of values related to the efficiency of melatonin production under the influence of lighting. Based on the analysis of these values and existing methods for determining the melanopic effect of a lighting system, an equation was formulated that combines visual and non-visual characteristics of lighting. This allowed, based on the data of the manufacturer of LED luminaires and the capabilities of the program DIALux evo, to conduct a study of the parameters of the lighting environment to assess the melanopic efficiency of lighting options with color temperatures of 3000, 3500 and 4000 K. According to research results, it was found that the best option for an integrated lighting system is LED devices with a color temperature of 4000 K. In the study of various options for integrative lighting, luminaires with sufficient melanopic efficiency at a wavelength of 480 nm were used. Considering the influence of the color rendering index and the modeling effect on visual comfort when performing visual work in public buildings, studies were conducted taking into account these parameters. Based on a comprehensive analysis of requirements and available LED luminaires, recommendations were proposed for the integrative lighting design that is energy-efficient, environmentally friendly.