Table of Contents

Potentials of using Millet Husk Ash (MHA) for Residual Lateritic Soil Modification/Stabilization

Jazuli Aminu Ahmed & Okorie Austine Uche                                                                                                  1 – 7

Structural, Electronics and Phonon Dispersion Relations of Bi-Iii

Binary Compound Semiconductors using Density Functional Theory                                                   

Amusa, R.A. and Oyewande, E.O.                                                                                          8 – 19

Biofuel Continue to be Energy Sustenance Option for Developing

Countries a Case Study of Maiduguri Metropolitan, Borno State.

Hayatu Abba Ibrahim                                                                                                             20 – 34                                                            

Inhibition of NST-44 Mild Steel Corrosion by some Inorganic

Substances in 0.1M Ammonium Nitrate Solutions

M. Alagbe                                                                                                                                35 – 41

Design and Construction of a Smart Security System

Okpeki U.K.                                                                                                                              42 – 55

Economic Load Dispatch Optimization of Renewable Energy

in Power System using Genetic Algorithm

Boniface Anyaka & Ogbodo Ikechukwu                                                                                  55-65

Modest Residential Building Cooling Load Components Analysis

Ibrahim, U.H., Baba A.A. and Idris, M.H.                                                                                  66-72

MODEST RESIDENTIAL BUILDING COOLING LOAD COMPONENTS ANALYSIS

Ibrahim, U.H., Baba A.A. and Idris, M.H.

Department of Mechanical Engineering,

Federal Polytechnic Mubi, Adamawa State, Nigeria

E-mail: heldabuk@yahoo.com

Abstract: In developing countries like Nigeria, the exacerbation of thermal discomfort in a living space is closely associated with high cost of air conditioning systems and the epileptic power supply. This paper therefore attempts to determine the contribution of each of the cooling load component of a modest residential building with the view of meliorating thermal comfort by manipulating the components that contribute significantly to the total cooling load of the building. To achieve the set objectives, the sources of heat load both internal and external were identified and their relative contributions to the total cooling load were determined. The results show that external heat load which encompasses heat gain through walls, windows, roof, and infiltration heat load, contributes about 87% of the total cooling load of the building. Significant reduction of the external cooling load by passive measures will not only make the occupants of the building to have relief comfort but can also reduce the size, cost and the power requirement of the air conditioning system to be used in the building. Amelioration of thermal comfort by mitigation of the external cooling load of a building using passive measures is recommended.

ECONOMIC LOAD DISPATCH OPTIMIZATION OF RENEWABLE ENERGY IN POWER SYSTEM USING GENETIC ALGORITHM

Boniface Anyaka & Ogbodo Ikechukwu

Department of Electrical Engineering

University of Nigeria, Nsukka, Enugu

Email: ikechukwuogbodo@yahoo.com

Abstract: The inclusion of a significant amount of renewable energy into power systems has resulted in additional constraints on Economic Load Dispatch (ELD) to accommodate the intermittent nature of the output. This condition may not match with system load demand or current trading mechanisms in a power system. A Genetic Algorithm (GA) method using ‘negative load’ and ‘inclusive’ approach is proposed and discussed. Index Terms – economic Load Dispatch (ELD), Genetic Algorithm (GA), Renewable Energy, Wind Power Generation.

DESIGN AND CONSTRUCTION OF A SMART SECURITY SYSTEM

Okpeki U.K.

Department of Electrical/Electronic/Computer Engineering,

Delta State University, Oleh Campus, Nigeria.

E mail: omakazeem@yahoo.com.

Abstract: From the wake of modern security technology, there had been a clarion need to equip our corporate organizations and homes against the increasing rate of crime and theft in our society. A robust security system that takes advantage of the numerous capabilities of the computer is designed and implemented. The system comprises of both the hardware and the software subsystems. The hardware consists of two parts the remote sensors and the central console for sensor data collection. The code is written with C + + language. It can monitor, process, and control the behaviour of the central console & sensors. The design methodology was modular. The hardware prototype when interfaced to the parallel port of a computer functioned as specified. The outstanding contribution of the project is direct software control of a networked alarm system,  automatically opens and closes the entry and exit doors, turns on all the fans/ACs on sensing the first person presence, turns all the security light on at night and off at day for a  corporate building , or home.

INHIBITION OF NST-44 MILD STEEL CORROSION BY SOME INORGANIC SUBSTANCES IN 0.1M AMMONIUM NITRATE SOLUTIONS

M. Alagbe

Department of Metallurgical Engineering

Kwara State Polytechnic, Ilorin, Nigeria

E-mail: alagbemic@yahoo.com

Abstract: This study presents the report of an investigation on the effect of sodium nitrite (NaN0₂), sodium biphosphate (Na₂HP0₄), potassium chromate (k₂Cr0₄), potassium dichromate (k₂Cr₂0₇) and sodium benzoate (C₆H₅COONa) inhibitors on the corrosion characteristics of NST-44 mild steel in 0.1M ammonium nitrate solutions.  The corrosion rates of the exposed mild steel were obtained using the weight loss immersion method.  It was observed that oxidizing inhibitors like sodium nitrite, potassium chromate and potassium dichromate were more efficient than non-oxidizing inhibitors like sodium biphosphate and sodium benzoate by providing inhibition at molar concentrations of 5 x 10^-3M and 5 x 10^-2M respectively in 0.1M ammonium nitrate solutions. The results obtained on cold-work and various inhibitors indicate that cold working increased adsorption of inhibitors.  Smaller quantities of inhibitors were therefore needed to inhibit corrosion of cold-worked mild steel than in un-worked sample.  The results of this research are expected to improve the corrosion resistance of this steel as a constructional material for fertilizers, dyes and explosives processing industries in Nigeria.