Abstract In the present study, a new technology controlled Ethanol/Water mix injection method is applied to a direct injection (DI) diesel engine to show effect on engine performance and emissions under steady operation. Ethanol/water mix is injected into the inlet manifold during inlet period. The experimental test matrix included six different fuels, namely Neat Diesel fuel and five secondary Ethanol/Water mix fuel with diesel fuel. The mixed fuels contain 0.55–2.79 by volume fraction of...
ABSTRACT In the last two decades, electricity generating plants in Nigeria have been operating below their capacity with available capacity barely surpassing half the installed capacity which is short of international standards of over 95% installed capacity. Due to this low availability, other key performance indicators such as capacity factor and load factor have also been relatively low. This research work therefore aims at evaluating the performance of selected gas turbine power plants i...
ABSTRACT The emission of noxious elements from building ceiling fire is increasingly becoming a source of concern globally. Hence, there is the need to develop eco-friendly flame-retardant building ceilings from composite materials to forestall the unwanted toxic emissions. This study aims at developing a bio-degradable hybrid aluminium dross ceiling utilizing varying material percentages using the moulding process. Box-Behnken factorial design from Minitab 17 was used to analyze the effect ...
ABSTRACT Solar energy applications being developed to assist in limiting the extent of climate change through low-carbon technologies, rely on the natural environment that may be sensitive to changes in the climate, resulting from rising carbon emissions. Climate models are essential to predict the future of solar irradiance fields needed for long range planning of solar energy use. Despite the wide use of numerial models on precipitation and agriculture, their applications on measuring the ...
The ejector is a device that been used to release the vapor and gases, or used to suctioned fluid from place to another been pumped to. Power plants condenser need this equipment to release gases and uncondensate steam, the ejector available in Kosti Thermal Power Station (KTPS) is not sufficient for produce the required vacuum for releasing gases and vapor. In this research the ejector was studied and some modifications to it like change is done the in throat length and divergent lengt...
ABSTRACT Numerous failures and eventual losses in the chemical industry have been traced to corrosion processes. Failures resulting from the inability of metals to support designed load requirements because of losses imposed by corrosion effects can be combated economically through the use of chemical inhibitors. Despite the fact that synthetic inhibitors are effective, nonetheless they are associated with problems of toxicity, disposal, litigation and enormous costs. In order to protect the...
ABSTRACT Spur gears are components used in power transmission in bottling machines. Bottling machine breakdowns are often the result of spur gear failure, and the cause of gear failure can stem from many issues, of which the most common is failure due to wear. This study, therefore, developed a spur gear with adequate mechanical properties that can function in such an environment. Pareto and metallurgical techniques were used to characterise the failure and its effects on the production proc...
ABSTRACT Spur gears are components used in power transmission in bottling machines. Bottling machine breakdowns are often the result of spur gear failure, and the cause of gear failure can stem from many issues, of which the most common is failure due to wear. This study, therefore, developed a spur gear with adequate mechanical properties that can function in such an environment. Pareto and metallurgical techniques were used to characterise the failure and its effects on the production proc...
ABSTRACT The PEDAL POWERED WASHING MACHINE is a project, which is undertaken to solve the problem of electric supply to people in rural areas. To run a washing machine, the source of power is electricity. In Nigeria most of the villages are suffering from shortage of electricity. So to overcome above problem we select the washing machine, which is operated manually. It requires no electric power supply or diesel supply. This project is low weight & portable can be easily transported. We�...
ABSTRACT The decrease in availability of fuel wood and rise in prices of fo~sil foels in Nigeria calls for considering alternative sources of energy for domestic and industrial use. This project was carried out in order to design and develop a low cost briquetting machine for rural communities. It involves the modificaion of hand use in producing briquettes by employing the use of hydraulic jack, moulds, pistons etc. This method is faster and easier. The agricultural residue used was 80% saw...
ABSTRACT Mobile surveillance robot is a robot which is used for the purpose of surveillance. monitoring, analysis of data and gathering of information with or" ithout the approved know ledge or the holder of the in formation and the timely d issem i nation nf in format ion to those who need to know so that action can be taken. The designed mobile survei I lance robot has a night vision camera with the ability to monitor its surrouncling. environment and collect data from it. The need to surve...
ABSTRACT The research evaluates the chemical, mechanical and microstructural characterization of an armour steel sourced from a scraped armoured vehicle in order to develop local content in the armouring technology. Chemical analysis, optical microscopy and mechanical tests were employed to examine the microstructural and mechanical properties of a low carbon armour steel. Chemical analysis showed the elemental constituents and the exact weight per percentage of each element present in the t...
ABSTRACT Majority of small scale farmers and homes are still using open-sun and/or non-convective methods for drying due to either high cost of gas/electric dryer or lack of electricity in their locations. These methods are time consuming and exposed the products to rain and contamination. A maintenancefriendly and properly enclosed dryer is therefore desired. The batch kerosene heated dryer was studied and adapted to suit the need of these people. In this work, the heat and mass transfer an...
Abstract Torsional vibration in Internal Combustion Engines is an important phenomenon occurs due to excitation loads, cycle-to-cycle variations results from the force the burnt gases and to change in inerita forces generated by reciprocating parts during convertoin of rotary motion to the linear one . This conversion leads to twist torque on the crankshaft which, in turn, leads to high stresses causing its damage. The importance of the present study stem from the fact that this phenomenon c...
Abstract With the increase in vehicle production and world population, more and more parking spaces and facilities are required. In this research a new parking system called Smart Parking System (SPS) is proposed to assist drivers to find vacant spaces in a car park in a shorter time and save effort. The new system uses sensors to detect either car park occupancy or improper parking actions. Features of SPS include display of available parking spaces, payment facilities and different types o...