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Assessment of Passive Retrofitting Scenarios in Heritage Residential Buildings in Hot, Dry Climates

par Ibrahim, Hanan ;Khan, Ahmed Z. ;Ahmed Mahar, Waqas;Attia, Shady;Serag, Yehya
Référence Energies, 14, 11, page (3359)
Publication Publié, 2021-06-07

Article révisé par les pairs

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Résumé :

Retrofitting heritage buildings for energy efficiency is not always easy where culturalvalues are highly concerned, which requires an integrated approach. This paper aims to assess thepotential of applying passive retrofitting scenarios to enhance indoor thermal comfort of heritagebuildings in North Africa, as a hot climate, a little attention has been paid to retrofit built heritagein that climate. A mixed-mode ventilation residential building in Cairo, Egypt, was selected asa case study. The study combines field measurements and observations with energy simulations.A simulation model was created and calibrated on the basis of monitored data in the referencebuilding, and the thermal comfort range was evaluated. Sets of passive retrofitting scenarios wereproposed. The results (based on the ASHRAE-55-2020 adaptive comfort model at 90% acceptabilitylimits) showed that the annual thermal comfort in the reference building is very low, i.e., 31.4%. Theapplication of hybrid passive retrofitting scenarios significantly impacts indoor thermal comfort inthe reference building, where annual comfort hours of up to 66% can be achieved. The originality ofthis work lies in identifying the most effective energy measures to improve indoor thermal comfortthat are optimal from a conservation point of view. The findings contribute to set a comprehensiveretrofitting tool that avoids potential risks for the conservation of residential heritage buildings inhot climates.