Abstract
The demand for energy-efficient housing is on the rise in Egypt. The information about the individual materials used in the construction of typical residential wall assemblies are known in the literature. However, data from lab tests to validate the performance for whole composite walls are limited. Three typical wall types were constructed and tested utilizing a standard experimental evaluation procedure based on thermal convection loads. A research framework combining the validated thermal performance data from the experimental test and the simulated data was developed. The experimental tests were performed utilizing a state-of-the-art guarded hotbox apparatus and following the guidelines of the ASTM C1363-11 standard. The solar radiation load was taken into account in the calculations according to the standard, and the error estimation and uncertainty analysis for the experimental tests are reported. The results of the experimental testing are described and a recommendation of the best wall type is noted. The output of this research will help to initiate a material database of the thermal performance of typical residential wall types used in Egypt that have been validated in the lab. This will be useful for the building industry as a whole to understand the performance of the materials in composite assemblies and their impact on energy efficiency.
Highlights
In Egypt, there is limited information published on the thermal performance of the local brick used in building construction
For a typical wall system, standard details and materials are often used; variations exist according to the source of material, workmanship, and at times the design details used by architects
The test rig apparatus is composed by three chamber: cold and hot, simulating the external and internal building environment and tempering ring
Summary
In Egypt, there is limited information published on the thermal performance of the local brick used in building construction. Throughout the literature, several techniques and standards have been developed for determining the thermal performance of building materials using different methods of experimental testing [1,2,3,4,5,6]. This review is summarized, showing a number of recent studies utilizing similar standards of measurement and similar experimental conditions, standards used, type of test specimen/module, and type of hotbox used. We utilize the guarded method and propose the use of experimental testing to analyze the performance of three wall systems commonly. A guarded method is a real-scale experiment It consists in recreating homogeneous conditions, close to standard values in buildings, and measuring the loss through a specimen. Static and dynamic thermal characterization of a hollow brick wall—tests and numerical analysis (Hollow Brick)
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