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External load-bearing walls configuration of residential buildings in Iraq and their thermal performance and dynamic thermal behaviour

机译：伊拉克住宅建筑物的外部承重墙结构及其热性能和动态热行为

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Improving thermal performance of external load-bearing walls in residential buildings could be the most effective way in reducing energy consumption for air-conditioning purpose in housing sector. The aim of this study is to characterize the already existing external load-bearing walls in the residential buildings, in Iraq, in terms of the thermo-physical properties of the used materials. In addition to that, the assemblies of these materials, i.e. wall configurations have been evaluated regarding the steady-state thermal performance and dynamic thermal admittance parameters. Different scenarios were suggested in order to improve the thermal performance of the existing walls. The effect of the binding material (cement mortar) on the global thermal performance of the wall fabrics has also been investigated by utilizing image analysis to calculate the percentage of this material from whole wall. The results showed that binding material has no significant effect on the thermal performance for the studied walls. Gypsum coating layer can be removed as it has marginal effect on the evaluated properties. It was found that involving two air-cavities (internally and externally) has much effect on the walls thermal performance than other approaches.
机译：改善住宅建筑中外部承重墙的热性能可能是减少住宅领域空调能耗的最有效方法。这项研究的目的是根据使用过的材料的热物理性质，对伊拉克居民建筑中已经存在的外部承重墙进行表征。除此之外，已经针对稳态热性能和动态热导率参数评估了这些材料的组件，即壁构造。为了改善现有墙壁的热性能，提出了不同的方案。还已经通过使用图像分析来计算了粘结材料（水泥砂浆）对墙织物整体热性能的影响，以从整个墙体中计算出该材料的百分比。结果表明，粘结材料对所研究的墙的热性能没有显着影响。可以去除石膏涂层，因为它对评估的性能影响很小。已经发现，涉及两个气腔（内部和外部）比其他方法对壁的热性能影响更大。

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