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Energy Efficiency In Residential Buildings: A Case Study Of 1004 Federal Housing Authority Estate, Victoria Island, Lagos

Oligbinde, O.S. and Odunfa, K. M. and Ohunakin, O.S. and Odunfa, V.O. (2014) Energy Efficiency In Residential Buildings: A Case Study Of 1004 Federal Housing Authority Estate, Victoria Island, Lagos. In: International Conference of Mechanical Engineering, Energy Technology and Management IMEETMCon 2014.

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Globally, energy consumption in buildings takes up the largest proportion of world‘s energy production. This consumption is more in developing countries including Nigeria and Least Developed economies than the developed worlds. Researches are therefore, currently been geared towards reducing energy consumption due to the global problem of insufficient energy needed to meet the demand and the attendant environmental issues associated with the production based largely on fossil burning. In Nigeria, consumption in buildings takes up about a third of the total electricity production with Lagos accounting for the larger percentage of the total energy production due to the fast rising population, teeming economic growth and increased rate of construction across the state. This paper thus investigates the energy consumption in residential buildings (1004 Federal Housing Authority Estate), in Lagos state. Survey analysis approach was adopted in this work. Field trips to the study area were conducted, measurements were taken and questionnaires were administered to occupants. The design features of the buildings were analyzed. The household equipments and the occupants were also taken into consideration. The work also analyze the present electric energy use for cooling and lighting typical residential buildings of upper income households in Lagos and the possible energy savings by adopting certain energy efficient features (in wall) in the case study building. The enveloped thermal transfer value (ETTV) equation was utilized to account for the quantity of heat taking into the building through the buildings envelop. Building wall of 200mm concrete thickness plastered with 13mm cement thickness in and out was used in the study. Result obtained indicates that doubling the thickness of external walls, reduces the cooling load of the building and hence reduces its total energy consumption. The total envelop energy of the building obtained was found to be 64.98W/m2, while 57.60 W/m2 was obtained when perlite was used in wall plastering in place of the cement with same thickness. Improvement of energy efficiency in residential buildings was also achieved through series of demonstration works carried out in the analysis using ETTV equation. The study established that the perlite plaster has a lower thermal transmittance value (U-value) when compare to that of cement hence a better energy reducing material option in building construction. The impact of ETTV on the energy consumption of residential buildings leading to a reduction in building heat load was also established in the study.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Energy Efficiency, Survey Analysis, Perlite, ETTV, Residential buildings, 1004 Federal Housing Estate, Lagos
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 30 Jul 2015 09:54
Last Modified: 30 Jul 2015 09:54

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