The work is devoted to the development of an approach to a comprehensive assessment of the general natural lighting of rooms, focused not only on meeting regulatory requirements, but also on the subjective perception of the light environment by the user. It is proposed to consider the room as an active element in the formation of a light pattern, while taking into account not only the characteristics included in the calculation of the coefficient of daylight illumination (D), but also additional parameters that are traditionally not included in this indicator. The purpose of the study is to formulate the principles of a method for assessing total natural lighting based on a combination of known lighting quantities and qualia-metrical analysis. The paper uses methods for calculating and measuring daylight factor D, conducted in field studies in two classrooms with different types of daylighting using verified luxmeters. Additionally, a simulation of the light environment was performed in the Relux software environment. The method of qualia-metric analysis is proposed as a promising tool for comprehensive assessment. D values were determined for the studied rooms, a tree of properties was constructed within the framework of qualia-metric analysis, and the main groups of criteria influencing the perception of general daylighting were identified. The conducted research has shown that the application of the qualia-metric approach in combination with the D indicator provides a more comprehensive and sensitive assessment of the quality of daylighting. The proposed method can be used at the conceptual design stage to select optimal spatial planning solutions and predict user satisfaction with the light environment.
The work is devoted to the development of an approach to a comprehensive assessment of the general natural lighting of rooms, focused not only on meeting regulatory requirements, but also on the subjective perception of the light environment by the user. It is proposed to consider the room as an active element in the formation of a light pattern, while taking into account not only the characteristics included in the calculation of the coefficient of daylight illumination (D), but also additional parameters that are traditionally not included in this indicator. The purpose of the study is to formulate the principles of a method for assessing total natural lighting based on a combination of known lighting quantities and qualia-metrical analysis. The paper uses methods for calculating and measuring daylight factor D, conducted in field studies in two classrooms with different types of daylighting using verified luxmeters. Additionally, a simulation of the light environment was performed in the Relux software environment. The method of qualia-metric analysis is proposed as a promising tool for comprehensive assessment. D values were determined for the studied rooms, a tree of properties was constructed within the framework of qualia-metric analysis, and the main groups of criteria influencing the perception of general daylighting were identified. The conducted research has shown that the application of the qualia-metric approach in combination with the D indicator provides a more comprehensive and sensitive assessment of the quality of daylighting. The proposed method can be used at the conceptual design stage to select optimal spatial planning solutions and predict user satisfaction with the light environment.

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• satisfaction with lighting
• quality of daylighting
• general daylighting
• daylight factor (D)
• qualia-metric analysis
• property tree
• uniformity
• saturation
• contrast
• connection with the external environment