Browsing by Author "Olorunmaiye, John"
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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 Experimental investigation of the effect of change in ambient air temperature on power consumption of domestic refrigerators,(Faculty of Engineering, University of Ilorin, 2012) Olorunmaiye, John; Awolola; Opadiji, JayeolaOne of the manifestations of climate change is increase in ambient temperature usually referred to as global warming. For sustainable development in a country, there is need to identify impacts of climate change and the necessary adaptation and mitigation strategies to adopt. To simulate the effect of global warming on the power consumption of refrigerators, a (model No. 150) THERMOCOOL refrigerator filled with twenty-five 75cl packaged ware was run in an air-conditioned room, in a room with the air-conditioner switched off and near an oven in a bakery. The electric power consumption of the refrigerator was measured using "Watts up!.net" watt meter and the ambient temperature was measured using FLUKE temperature/humidity meter. The average hourly energy consumption of the refigerator operating at mean ambient temperatures of 25.4C, 30.7C, 38.8C were 93.844Wh, 100.32Wh, 105.08Wh, respectively. Some possible ways to reduce the increase in power consumption of refrigerators due to global warming include using compressors of higher efficiency and condensers of greater effectiveness.