COMPARATIVE STUDY OF SUPERMARKET BUILDING PERFORMANCE UNDER CURRENT AND FUTURE WEATHER CONDITIONS IN ABUJA MUNICIPAL COUNCIL (AMAC), ABUJA-NIGERIA

This study investigates the energy performance and carbon emissions of LIDL supermarket buildings in Abuja, Nigeria, under current and future climate conditions. Using a multi-methodological approach, the research evaluates three construction models—Model P1 (steel columns with cladding panels), Model P2 (Poroton blocks), and Model P3 (precast concrete columns with glulam beams)—to understand the impacts of construction techniques and materials on building energy efficiency and sustainability. The study employs Thermal Analysis Software (TAS) v9.5.0 to simulate energy consumption and emissions under different scenarios, utilizing dynamic weather data from the Chartered Institution of Building Services Engineers (CIBSE) for both present and future climate projections (2050s and 2080s). The methodology integrates critical building elements, including floor area, thermal properties, and heating, cooling, and lighting systems, and incorporates site-specific data from Jabi, Abuja, to analyze regional climate effects. Key simulation assumptions include construction details, U-values, and infiltration rates, while databases from ASHRAE are used to model thermal properties and heat transfer. Results highlight the energy demand changes and carbon emissions associated with heating and cooling across seasonal extremes. This research provides actionable insights into optimizing supermarket energy performance and sustainability in response to climate change, offering valuable guidance for building designs in urbanizing and climate-vulnerable regions like Nigeria.