Thermal Performance Evaluation of Traditional Buildings Flat Roofs in a Hot and Arid Climate of Algeria

This investigation aims to apply the analytical method of admittance for determining the thermal performance of composite flat roofs in traditional houses located in the southern region of Algeria,  characterized by hot and arid climate conditions. The effect of adding insulation to the composition...

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Main Authors: M'hamed Mahdad, Aghiles Hammas, Said Abboudi
Format: Article
Language:English
Published: National University Of Architecture And Construction Of Armenia 2025-04-01
Series:Journal of Architectural and Engineering Research
Subjects:
Online Access:https://jaer.nuaca.am/index.php/jaer/article/view/191
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author M'hamed Mahdad
Aghiles Hammas
Said Abboudi
author_facet M'hamed Mahdad
Aghiles Hammas
Said Abboudi
author_sort M'hamed Mahdad
collection DOAJ
description This investigation aims to apply the analytical method of admittance for determining the thermal performance of composite flat roofs in traditional houses located in the southern region of Algeria,  characterized by hot and arid climate conditions. The effect of adding insulation to the composition of flat roofs in traditional houses is studied by varying its, type, location and thickness. In this study, nine configurations of composite flat roof systems were manufactured using multiple layers with five types of insulations. Moreover, different dynamical thermal parameters are analyzed in this study, namely time lag (TL), decrement factor (DF), admittance (Y), transmittance (U), and surface factor (SF). The main results revealed that the roof configuration of R8 with insulation based on formaldehyde board presents a high value of TL (9.94 hours) and the lowest value of DF (0.1). In contrast, the configurations without insulation addition (R1, R2, and R3) display the lowest values of TL (4.91, 4.74, and 4.81, respectively) and the highest values of DF (0.59, 063, and 0.62, respectively). This research is useful for clearly understanding the thermal performance of composite flat roofs for the improvement of the energetic efficiency of traditional buildings.
format Article
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institution DOAJ
issn 2738-2656
language English
publishDate 2025-04-01
publisher National University Of Architecture And Construction Of Armenia
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series Journal of Architectural and Engineering Research
spelling doaj-art-2651287f372042b7adbca267e2088e342025-08-20T03:18:05ZengNational University Of Architecture And Construction Of ArmeniaJournal of Architectural and Engineering Research2738-26562025-04-01810.54338/27382656-2025.8-05Thermal Performance Evaluation of Traditional Buildings Flat Roofs in a Hot and Arid Climate of AlgeriaM'hamed Mahdad0Aghiles Hammas1Said Abboudi2National Centre of Studies and Integrated Research on Building EngineeringNational Centre of Studies and Integrated Research on Building EngineeringUniversité de Bourgogne Franche Comté This investigation aims to apply the analytical method of admittance for determining the thermal performance of composite flat roofs in traditional houses located in the southern region of Algeria,  characterized by hot and arid climate conditions. The effect of adding insulation to the composition of flat roofs in traditional houses is studied by varying its, type, location and thickness. In this study, nine configurations of composite flat roof systems were manufactured using multiple layers with five types of insulations. Moreover, different dynamical thermal parameters are analyzed in this study, namely time lag (TL), decrement factor (DF), admittance (Y), transmittance (U), and surface factor (SF). The main results revealed that the roof configuration of R8 with insulation based on formaldehyde board presents a high value of TL (9.94 hours) and the lowest value of DF (0.1). In contrast, the configurations without insulation addition (R1, R2, and R3) display the lowest values of TL (4.91, 4.74, and 4.81, respectively) and the highest values of DF (0.59, 063, and 0.62, respectively). This research is useful for clearly understanding the thermal performance of composite flat roofs for the improvement of the energetic efficiency of traditional buildings. https://jaer.nuaca.am/index.php/jaer/article/view/191Thermal insulationflat roofsdynamic thermal propertiesdecrement factortime lag
spellingShingle M'hamed Mahdad
Aghiles Hammas
Said Abboudi
Thermal Performance Evaluation of Traditional Buildings Flat Roofs in a Hot and Arid Climate of Algeria
Journal of Architectural and Engineering Research
Thermal insulation
flat roofs
dynamic thermal properties
decrement factor
time lag
title Thermal Performance Evaluation of Traditional Buildings Flat Roofs in a Hot and Arid Climate of Algeria
title_full Thermal Performance Evaluation of Traditional Buildings Flat Roofs in a Hot and Arid Climate of Algeria
title_fullStr Thermal Performance Evaluation of Traditional Buildings Flat Roofs in a Hot and Arid Climate of Algeria
title_full_unstemmed Thermal Performance Evaluation of Traditional Buildings Flat Roofs in a Hot and Arid Climate of Algeria
title_short Thermal Performance Evaluation of Traditional Buildings Flat Roofs in a Hot and Arid Climate of Algeria
title_sort thermal performance evaluation of traditional buildings flat roofs in a hot and arid climate of algeria
topic Thermal insulation
flat roofs
dynamic thermal properties
decrement factor
time lag
url https://jaer.nuaca.am/index.php/jaer/article/view/191
work_keys_str_mv AT mhamedmahdad thermalperformanceevaluationoftraditionalbuildingsflatroofsinahotandaridclimateofalgeria
AT aghileshammas thermalperformanceevaluationoftraditionalbuildingsflatroofsinahotandaridclimateofalgeria
AT saidabboudi thermalperformanceevaluationoftraditionalbuildingsflatroofsinahotandaridclimateofalgeria