Performance of Thermal Insulation of Different Composite Walls and Roofs Materials Used for Energy Efficient Building Construction in Iraq  

作　　者：Ahmed Mustaffa Saleem Abdullah A.Badr Bahjat Hassan Alyas Omar Rafae Alomar 

机构地区：[1]Engineering Technical College of Mosul,Cultural Group,Northern Technical University,Mosul,41002,Iraq

出　　处：《Frontiers in Heat and Mass Transfer》2024年第4期1231-1244,共14页热量和质量传递前沿（英文）

摘　　要：This study numerically involves the performance of thermal insulation of different types of composite walls and roofs to demonstrate the best model that can be used for energy-efficient building construction in Iraq.The mathematical model is solved by building its code using the Transmission Matrix Method in MATLAB software.The weather data of 21st July 2022 in Baghdad City/Iraq is selected as a test day.The wall types are selected:the first type consists of cement mortar,brick,and gypsum,the second type consists of cement mortar,brick,gypsum,and plaster and the third type consists of cement mortar,brick,gypsum,air cavity,and sheathing timber.The roof types are chosen:the first type consists of reinforced concrete,gypsum,and plaster,and the second type consists of the precast concrete flag,river sand,tar,reinforced concrete,gypsum,and plaster.The obtained solutions are compared with previous studies for the same city but with different types of walls and roofs.The findings display that the second and third types of walls reduce the entry heat flux by 4%and 10%as compared to the first type of wall.Also,the results indicate that the second type of roof reduces the entry heat flux by 21%as compared to the first type of roof.The results confirm that the best models of walls and roofs in Iraq are the third and second types,respectively,as compared to other models and hence,the performance of insulation material strongly depends on the materials used while building them.

关 键 词：Thermal insulation energy gain composites walls and roofs heat flux transmission matrix method 

分 类 号：TU111.195[建筑科学—建筑理论]