Combined effects of indoor thermal-luminous environments on humans: A review and meta-analysis

Abstract

Thermal and luminous environments are critical to human health and comfort. Existing research has considered this in the specific case, and this review explores whether and to what degree the interaction of thermal-luminous environments on humans through an extensive literature review and meta-analysis. 79 publications were investigated to discuss the interaction of thermal-luminous environments on humans, such as potential mechanisms, thermal perceptions, visual perceptions, and physiological parameters. Among these, 14 studies met the criteria for meta-analysis of luminous environment on thermal sensation votes. Meta-analyses of these studies revealed that high illumination levels are associated with higher thermal sensation votes (SDM 0.41, 95% CI 0.10 to 0.71), while high color temperatures are associated with lower thermal sensation votes compared to low color temperatures (SDM −0.29, 95% CI −0.52 to −0.06). Luminous environments are closely related to the body’s ability to regulate temperature. Exposure to light can alter thermal-related physiological responses. Additionally, the thermal environment can impact the visual perception of warmth or coolness and preferences for different lighting conditions. This paper discusses potential improvements and future developments in the research on the combined effects of thermal and luminous environments on humans. This comprehensive review serves as a valuable reference for further investigations aimed at gaining a deeper understanding of, or making predictions about, the relationship between thermal-luminous environments and human comfort.