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Abdollahi M, Khosravi F, Khalilpor S H. Comprehensive review and comparison of the properties of building insulations with the design requirements of the iran national building regulations (Section 19) approach. JCES 2018; 1 (3) :1-12
URL: http://journals.lu.ac.ir/jces/article-1-31-en.html

A significant portion of the world's energy consumption is spent on heating and cooling, which will increase the demand for energy efficiency improvements. One of the ways to improve energy consumption in buildings is the thermal design of various building components, including walls, ceilings and floors, in accordance with the requirements and principles set forth in the regulations. The main objective of this research is to provide a comprehensive comparison of all types of building insulations and familiarity with the design principles of their construction based on the requirements of section 19 of the National Building Regulations of Iran. In the present paper, after introducing various insulators, five criteria including density, thermal conductivity coefficient, fire resistance, resistance to sunlight and sound properties of insulators have been investigated and compared. In the end, a case study is conducted to get familiar with the thermal design process for a residential building in Tehran. The results show that a thickness of 5.5 cms for rock wool (regardless of the thermal resistance of other layers of the wall) will fullfill the thermal design requirements.