Thermal Performance Evaluation of TIM Combined with Residential Windows in Different Climatic Regions in Iran




Transparent insulation materials (TIM), thermal performance, energy saving, daylight, residential building


Windows play a significant role in the increase and loss of heat from the building envelope and determine the quantity, quality, and distribution of daylight. A strategy that involves incorporating transparent insulating materials into a double-glazed window offers the potential to provide combined improvements in thermal and daylighting performance. The thermal properties of transparent insulation materials in windows depend on various factors, such as the type of insulation material, thickness, geometry and insulation structure, location, and orientation of the window, among others. The aim of this research is to optimize three criteria: "thickness," "location of transparent insulation relative to window layers," and "direction of the wall with transparent insulation of the building window." The goal is to minimize thermal loads and reduce energy consumption in residential buildings. To achieve this, a real model was selected, and Design Builder software was used to measure the "heating load," "cooling load," and the sum of these two loads as the "total thermal load" for all three criteria in three cities of Iran with different climates: Tehran (moderate climate), Ahvaz (warm climate), and Tabriz (cold climate). The results of the research showed that for the city of Tehran, 3-inch insulation in the middle of the double-glazed window and the south front is optimal. For the city of Tabriz, 5-inch insulation on the inner surface of the window and the western front is optimal. And for the city of Ahvaz, 3-inch insulation on the outer surface of the window and the eastern front is optimal. It is worth noting that the annual heating load and total annual heating load for all three criteria have the highest values in Tabriz city. Therefore, it is recommended to use HSNPS insulation in transparent windows to reduce energy consumption in Tabriz (cold climate).


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Author Biographies

Mahya Ghouchani, Technical and Vocational University

Mahya Ghouchani is an architect and urban planner, researcher, and university lecturer. In 2013, she received her master’s degree in architectural engineering from Shahrood University, Shahrood, Iran, and since then has been working as an architectural designer and supervisor. In addition, she has written two books entitled "Principles of mosque design" and "Introduction to Architectural Design" in Persian. Her research interests span the Theory and Philosophy of Architecture, Architectural Design, Space and Culture, Mosque Design, Mosque Architecture, Intelligent Decision in Architecture, Islamic Architecture and Spirituality, Urban Design, Urban planning, Urban Development, Climate urban, Landscape and beauty in the city.

Pari Alavi, Islamic Azad University of Zanjan

Pari Alavi is an expert of architecture and Official member of the road and urban department. She has obtained her Ph.D. with an average of 19/43 in 2022 from the Islamic Azad Zanjan University. Her major research interests are in architecture and urban regeneration. She has cooperated as a reviewer for several scientific journals such as IJEE, IJBP, FoAR …. She has presented more than 60 articles on related subjects at national and international conferences and published more than 10 papers in several journals.

Farzaneh Fazel, Islamic Azad University of Zanjan

Farzaneh Fazel graduated in Architectural Engineering. She was deeply interested in optimizing energy in buildings and since her thesis she tried to focus more on it. From 2 years ago she has started to research and also has professional experience in this area.

Seyed Saman Ghaffari, Islamic Azad University of Zanjan

Seyed Saman Ghaffari graduated as an architectural engineer. He is very interested in clean energy and has research experiences in sustainable architecture and efficient methods in construction.


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How to Cite

Ghouchani, M., Alavi, P., Fazel, F., & Ghaffari, S. S. (2023). Thermal Performance Evaluation of TIM Combined with Residential Windows in Different Climatic Regions in Iran. ICONARP International Journal of Architecture and Planning, 11(2), 734–753.