Energy Consumption and Residential Building Design in Lagos Metropolis

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Kusimo, M.A
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The use of energy has raised concerns over the problem of supply and exhaustion of the resources. In developing countries, particularly in Nigeria, the rate of energy consumption has been increasing rapidly due mainly to population growth, urbanization and development of infrastructures in recent time. The International Energy Agency (IEA) frightening annual energy use growth projection of 3.2% by emerging economies, with the expectation to exceed developed countries consumption, makes it inevitable, the future use of sustainable energy consumption in residential buildings. This research therefore aims at investigating energy consumption in Residential buildings in order to develop a viable model for projecting the energy consumption with different design parameters in Lagos metropolis. To this extent, extensive reviews on various building elements characteristics, identification of energy use indicators, environmental factors and occupant behavioural actions on household’s energy consumption were examined. Field survey was also carried out in order to identify, investigate, and determine variables effects such as design building characteristics, environmental thermal factor, human comfort requirements, access and use of building control mechanism among others. The research covered the Sixteen Local Government Areas found in the Metropolis of Lagos. The population considered in this study was derived from two main groups which comprise Public and Private Housing units. On this score, a random sampling technique was employed in selecting the sample required in this study. It is as a consequence of this that questionnaires, personal interviews and secondary data were utilized in collecting relevant data. The data were subjected to careful analysis using Chi-Square test, Spearman Correlation (rho), Pearson product moment correlation (r) and forward stepwise regression analysis. The data analysed revealed that what primarily determines energy consumption in the residential buildings considered can be traceable to seven significant variables which includes Environmental Outdoor Relative Humidity, Total Glazed External Area, Environmental Indoor Temperature, Building Envelope Area, General Glazing sizes, Building Cooled Floor Area and Environmental Indoor Relative Humidity. This prompts a major conclusion in this research that what is responsible for energy consumption in Lagos Metropolis is the relationship between Planning layouts and Building Characteristics in the control of both internal and external environmental conditions. Therefore, the research recommends that the knowledge of Architectural sustainability be encouraged in training Architects and Planners on energy use and management of energy resources in different climatic zones in Nigeria.
University of Lagos School of Postgraduate Studies Phd Thesis and Dissertation
Energy consumption , Energy indicators , Environmental thermal factors and Thermal Behaviour , Building characteristics
Kusimo, M.A (2017) Energy Consumption and Residential Building Design in Lagos Metropolis. University of Lagos School of Postgraduate Studies Phd Thesis and Dissertation