Browsing by Author "Ajiboye, Tajudeen"
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Item Application of Off-Grid Energy Sources to Reduce Rate of Increase in Demand on National Grids(University of Ilorin and Cape Peninsula University of Technology, 2011) Olorunmaiye, John; Opadiji, Jayeola; Ajiboye, TajudeenThe demand for electrical energy from the national grids is increasing in African countries as result of population growth and construction of more residential buildings. Residential electricity usage constitutes a high percentage of electrical energy demand from national grids in most African countries because of the low level of industrialization In the last few years, some companies have started operating in Nigeria installing solar panels to charge deep-cycle batteries to supply electricity to residential buildings. A case study of a home where it was installed showed that their average monthly electricity consumption has reduced from 352.14kWh before the installation to 154.73kWh after the installation as indicated by the 3- phase meter provided by Power Holding Company of Nigeria. In that home a solar plate collector for heating water was to also installed to produce warm water for bathing. This resulted in a saving of about 2kg of Liquefied petroleum gas per month. If most residential buildings in a country adopt these technologies to provide electricity and hot water instead of using electric water heater, the energy demand from the national grid per building will reduce.Item Investigation of Thermal Insulation Properties of Biomass Composites(Faculty of Engineering Universitas Indonesia, 2016-09) Abdulkareem, Sulaiman; Ogunmodede, S.; Aweda, Jacob O.; Abdulrahim, A. T.; Ajiboye, Tajudeen; Ahmed, Ismaila Idowu; Adebisi, Jeleel AdekunleThis paper reports on the investigation of thermal properties of Kapok, Coconut fibre and Sugarcane bagasse composite materials using molasses as a binder. The composite materials were moulded into 12 cylindrical samples using Kapok, Bagasse, Coconut fibre, Kapok and Bagasse in the ratios of (70:30; 50:50 and 30:70), Kapok and Coconut fibre in the ratios of (70:30; 50:50 and 30:70), as well as a combination of Kapok, Bagasse and Coconut fibre in ratios of (50:10:40; 50:40:10 and 50:30:20). The sample size is a 60mm diameter with 10mm – 22mm thickness compressed at a constant load of 180N using a Budenberg compression machine. Thermal conductivity and diffusivity tests were carried out using thermocouples and the results were read out on a Digital Multimeter MY64 (Model: MBEB094816), while a Digital fluke K/J thermocouple meter PRD-011 (S/NO 6835050) was used to obtain the temperature measurement for diffusivity. It was observed that of all the twelve samples moulded, Bagasse, Kapok plus Bagasse (50:50), Kapok plus Coconut fibre (50:50) and Kapok plus Bagasse plus Coconut fibre (50:40:10) has the lowest thermal conductivity of 0.0074, 0.0106, 0.0132, and 0.0127 W/(m-K) respectively and the highest thermal resistivity. In this regard, Bagasse has the lowest thermal conductivity followed by Kapok plus Bagasse (50:50), Kapok plus Bagasse plus Coconut fibre (50:40:10) and Kapok plus Coconut fibre (50:50).