Classroom Thermal Comfort and its Effect on Student Psychology in SMA Negeri 1 Obaa

Thermal comfort has an important role on student psychology because a comfortable environmental situation can improve psychological well-being and affect the creation of conducive and effective learning conditions. This study examines the thermal comfort of classrooms in SMA Negeri 1 Obaa, Mappi Regency, South Papua, and its impact on student psychology. The results showed that the thermal condition of the classroom reached a temperature of 32.4°C and humidity up to 86%, indicating discomfort for students, with an average PMV value of 2.35 (hot category) and PPD of 90%. Using descriptive quantitative methods, data was collected through measurements of air temperature, humidity, wind speed, as well as questionnaires on thermal comfort and student psychology. Results showed that 85% of students felt that thermal conditions had a significant effect on their psychology, affecting focus, concentration, stress, and emotional well-being. This study fills a gap in the literature by highlighting the importance of thermal comfort in hot climates, as well as providing empirical evidence on the psychological impact of thermal conditions in classrooms that has been underestimated.