Browsing by Author "A. Nasir"

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    Gas Turbine Engine: Design, Application and Performance Analysis
    (Springer Nature Singapore Pte Ltd. 2019 S.-I. Ao et al. (eds.), Transactions on Engineering Technologies,, 2019) A. Nasir; A. Mohammed; J. Y. Jiya
    Gas Turbines (GT) are thermally rated air breathing engine which generates motive power from the combustion of fuel and expansion of gases. Gas turbines are employed in different spares of our daily lives, yet many people are unaware of the cutting-edge technologies used in the creation and operation of these engines. This article explains the principle involved with emphasis on the operation and performance analysis. The application of GT ranges from its use in power generation to aircraft propulsion, ship propulsion, gas compression in pipeline or tankers and others. GT is hugely affected by ambient conditions such as increase or decrease in ambient temperature. The operation of GT follows the Bryton cycle and detail is given in the paper. The effect of increase in ambient temperature on GT performance has been analyzed and discussed. As the ambient temperature increase, the mass flow reduces and therefore the performance of the GT drops.
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    PERFORMANCE ASSESSMENT OF HYDROPOWER GENERATING PLANTS
    (International Engineering Conference (IEC), 2015) J. Y. Jiya; A. Nasir; H. U. Ogboo; A. Salihu
    This paper studies the performance of ahydropower scheme in Nigeria which contributes to an acute electricity supplyand has effects on the country’s development. This does not only restrict the socioeconomic activities to basic human needs, but also adversely affecting the quality of life too.The expected full load installed capacity for the hydropower scheme is 522.74MW but the generated capacity for the period under review is 305.147MW. Only about 40% of the installed capacity was available. Average Capacity factor for this hydropower scheme is 47%, min. of 25% in 2014 and max. of 83% in 2013 as against the industrial best practice of 50 – 80%.Total generation reduction due to downtime of the hydropower scheme is 28165773MWh amounting to 53% of the total installed capacity. Based on Power generation reduction of 53% the loss of revenue in naira was about 186 Billion naira.To improve the annual power generation, a complete overhauling of all the generators and adequate water management practice must be in place so that the available water can sustain generation throughout the year.
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    SECURITY MANAGEMENT: THE ENGINEERING PERSPECTIVE
    (IEC, 2015) H. U. Ogboo; A. Nasir; J. Y. Jiya; H. T. Abdulkarim
    Security management is a difficult task as everyone agrees that security is a problem. As such, this work aims at addressing the ever increasing security challenge confronting us as individuals from the engineering perspective. Throughout human history, engineering has driven the advance of civilization. This can be seen from the metallurgists who ended the Stone Age to the shipbuilders who united the world’s people through travels and trades; the past witnessed many marvels of engineering prowess. As civilization grew, it became pertinent that the world became confronted with the challenge of survival and relevance and hence, the desire not to be cut out from the basic necessities of life and existence gave rise to devices by humanity to remain relevance and hence, the field of engineering owes it a responsibility to the world to see that this issue is sorted out as usual as it has always provided respite to the world.