Authors: Akerele Olalekan Victor, Omojogberun Veronica Y, Abegunde-Abikoye O.S
Abstract: Many buildings available today are built without considering whether they are energy efficient or not. This gives rise to either over-estimation or under-estimation of energy (electricity) to be used by the building. Hence, a way of estimating the total energy consumption of a building is to properly account for the variables that demand energy usage from a building and then calculate the resultant energy used using a suitable computer application. The energy performance of two two-bedroom bungalows was estimated using a developed computer application. The computer application allowed input of various building parameters such as geometry (height, breadth, and width), roof type, building orientation, window shading, cooling load, and other electrical appliances. The estimation was done during the peak hour of the day (Cooling Load Temperature Difference between 11 am and 3 pm) for one hour with the building facing due west to efficiently ascertain how energy efficient the building would perform under peak load. The results from computed data show that the building required more energy to keep it cool due to excessive sunlight incident on the building. Also, the roofing material and window shading contributed to the poor energy performance of the building. With an estimated value of 16kW, it can be concluded that the energy performance of the building was below average as a result of the poor selection of building materials and building orientation.
