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Volume 3 Issue 3

This paper presents the outcome of our research on the optimization of output in the present-day Nigerian power stations using Afam power plant as a case study. Afam power plant is a representative of the about 23 power generating plants connected to the Nigerian national grid which has a total installed capacity of circa 12,000MW. This work has been done using the formulation of various cases of load dispatch equations relevant to the subject and hybrid computational approach i.e., Non-Linear Programming (NLP) optimization method. The authors have applied the various formulations to the operations information at Afam Power Plant. Results revealed that for load dispatch without power generator constraints, generated power is about 650MW, while for load dispatch with power generator constraints, generated power is about 610MW. The results also show that Afam power plant did not produce maximum output in most of the years between 2010 and 2016. The worst years were 2011, 2014 and 2016 due to obvious issues ranging from maintenance downtime to unavailability of transmission line to receive generated power. The research shows that the output of Afam power plant started to improve from 2017 to first Quarter of 2020. Further analysis shows that for system losses and generator limits, dispatch and total cost in naira per hour for a given number of generators load demand can be determined.
Author(s) and Download Link
Folorunso O. Kolade, Sunny Orike, Christopher O. Ahiakwo, and Dikio C. Idoniboyeobu
Journal of Newviews in Engineering and Technology (JNET), June, 2021 pp1-10 Maximization of Output and Effective Load Dispatch of Afam Power Plant [Online Full Text]
The study clarifies the mechanism of debris formation and adhesion on metal counterface. Polymeric materials filled with 30% sodium hydroxide 3, 4 and 5% treated and untreated coconut shell and bagasse fillers 100, 180 and 112 μm particle sizes, respectively, were produced. In the spectroscopic analysis, the increase in the transmittance level of a functional group indicates its reduction. 5% NaOH treated coconut shell filler and 4% NaOH treated bagasse filler had the highest reduced OH functional group in the treated fillers. Their carboxylic acid transmittances were 98.218% and 99.900%, respectively. The carboxylic acid transmittances of the untreated coconut shell and bagasse fillers were 95.218% and 95.954%, respectively. The unfilled polymers had a friction coefficient of 0.21, and their wear rates were in the order of 10-3mm3N-1mm-1. The filled polymers had a friction coefficient lower than 0.21 with varied wear rates. Polypropylene with sieved 100, 180 and 112 μm coconut shell and bagasse particles had wear rates in this order 0.010, 0.008 and 0.011 mm3N-1mm-1, and 0.009, 0.11 and 0.007 mm3N-1mm-1, respectively. The wear rate of the polyethylene with sieved 100, 180 and 112μm coconut shell and bagasse particles were in this order 0.012, 0.006 and 0.010 mm3N-1mm-1, and 0.008, 0.009 and 0.008 mm3N-1mm-1, respectively, in the same order with the particle sizes. The SEM micrograph of the wear track showed low adhesive and detached patchy shapes debris of the polymeric materials on the disc counterface. The larger filler particles caused agglomeration and low dispersion, especially in bagasse-filled polymeric materials. The suggestion, therefore, was the examination of the polymeric material on different metal counterfaces.
Author(s) and Download Limk
Sylvanus Alibi, Steven Odi-Owei, Charles Obunwo, and Barinyima Nkoi
Journal of Newviews in Engineering and Technology (JNET), June, 2021 pp11-19 Effect of Treatment of Natural Fillers on the Tribological Behaviour of Polymeric Materials [Online Full Text]

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The Editor-in-Chief, JNET
Faculty of Engineering.
Rivers State University, Port Harcourt, Nigeria.
E-mail: jnet@rsujnet.org, rsujnet@gmail.com
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