Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 57 1 2025 03 21 Evaluating of the Impact of Environmental Indicators on Thermal Comfort for Different Climates in Iran Using the PMV Model Evaluating of the Impact of Environmental Indicators on Thermal Comfort for Different Climates in Iran Using the PMV Model 3 24 5727 10.22060/mej.2025.23850.7819 FA Vahid Rezaee Department of Mechanical Engineering and Electrical Engineering, National University of Skills (NUS), Tehran, Iran 0000-0002-6502-4738 Abouzar Taghizadeh Department of Electrical Engineering, National University of Skills (NUS), Tehran, Iran Journal Article 2025 01 20 <span style="letter-spacing: .05pt;">In this study, environmental indicators for ensuring thermal comfort conditions for the design of residential buildings in various climatic conditions of Iran have been investigated and evaluated. This study proposes the impact of climatic indicators on building design using coding and the ASHRAE 55 standard thermal comfort model in the Climate Consultant software. Iranian cities are divided into 9 climates using the Köppen climatology method. The environmental indicator parameters in these 9 climates include temperature ranging from 18 to 38 degrees Celsius, air velocity between 0.1 to 0.5 meters per second, relative humidity between 40 to 80 percent, metabolic rate (met) between 0.7 to 2, and clothing insulation (clo) ranging from 0.5 to 1.5, which are generated randomly. The results of active methods (evaporative cooling, heating and humidification, cooling and dehumidification) and passive methods (window shading, direct passive solar heating) for thermal comfort showed that for the four scenarios (winter and summer clo, and met), the best performance was in the scenarios of (winter and summer clo at 0.5 and met at 2). For most climates in Iran, comfortable conditions are achieved with passive methods for approximately 15 to 20 percent of the year.</span> <span style="letter-spacing: .05pt;">In this study, environmental indicators for ensuring thermal comfort conditions for the design of residential buildings in various climatic conditions of Iran have been investigated and evaluated. This study proposes the impact of climatic indicators on building design using coding and the ASHRAE 55 standard thermal comfort model in the Climate Consultant software. Iranian cities are divided into 9 climates using the Köppen climatology method. The environmental indicator parameters in these 9 climates include temperature ranging from 18 to 38 degrees Celsius, air velocity between 0.1 to 0.5 meters per second, relative humidity between 40 to 80 percent, metabolic rate (met) between 0.7 to 2, and clothing insulation (clo) ranging from 0.5 to 1.5, which are generated randomly. The results of active methods (evaporative cooling, heating and humidification, cooling and dehumidification) and passive methods (window shading, direct passive solar heating) for thermal comfort showed that for the four scenarios (winter and summer clo, and met), the best performance was in the scenarios of (winter and summer clo at 0.5 and met at 2). For most climates in Iran, comfortable conditions are achieved with passive methods for approximately 15 to 20 percent of the year.</span> https://mej.aut.ac.ir/article_5727_dc363817786ff182b7bc59565d864523.pdf