Multiple-criteria optimization of residential buildings envelope toward nZEBs: simplified approach for Damascus post-war

Conference paper


Khaddour, L. A. and Yeboah, S. K. (2022). Multiple-criteria optimization of residential buildings envelope toward nZEBs: simplified approach for Damascus post-war. The 3rd International Conference on Energy and Sustainable Futures (ICESF) . Coventry University, UK 07 - 08 Sep 2022
AuthorsKhaddour, L. A. and Yeboah, S. K.
TypeConference paper
Abstract

Syria faces significant challenges in optimizing residential building energy consumption to subsequently reduce CO2 emissions due to its conventional construction methods and systems, exacerbated by the recent conflict. Post-war re-construction provides new opportunities for improvement in building standards through the 2009 BIC insulation code towards nearly Zero Energy Buildings (nZEBs). However, the decline in economy growth poses significant challenges. In this study, we formulate a simplified building envelope selection approach using multi-criterion optimization methodology based on simulated thermal loads using IESVE and cost-energy trade-off. IESVE was used to evaluate the thermal performances of five cases representing 5 different building envelope structures on existing buildings in Damascus, Syria. Four out of the five cases were BIC compliant, and their thermal performances and cost energy trade-offs were evaluated against that of a conventional building representing the construction-as-usual case. Payback on the investment in insulation improvement of the envelope structures were also calculated. The results overall shows that the envelope structures incorporating insulation layer reduced annual heating, cooling, and combined energy loads of those buildings. Comparatively, these improvements were slightly better under winter conditions than in summer. Based on payback period analysis, none of the improvements provided acceptable economical payback within five years, as energy consumption tariffs were extremely low and insulation material costs were extremely high. A Multi-Criteria Decision Making (MCDM) framework was developed and applied to the cases investigated. Based on the limitations of the BIC, no optimal solution was obtained. However, the framework provides a good basis for stakeholders to make sound decisions in transitioning buildings especially under post war context towards nZEBs.

KeywordsInsulation; Housing; Energy; Simulation; Thermal Loads.
Year2022
Publication dates
Print07 Sep 2022
Publication process dates
Accepted07 Aug 2022
Deposited27 Oct 2022
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https://openresearch.lsbu.ac.uk/item/92407

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