Engineering

Research Papers/Topics in Engineering

Open-Loop Variable Voltage Variable Frequency Control of Three (3) Phase Induction Motor for an Electric Vehicle Drive

ABSTRACT This work presented an open loop variable voltage variable frequency (V/F) control of three phase induction motor for an electric vehicle drive. The major advantage of v/f is the ease of implementation. 6 Simulation and practical implementation of the project was carried out using sequential logic circuit for the control of the three phase inverter. Also included in the design is a 120V to 600V boost converter that increases the battery supply voltage to be able to supply the 420V in...

Biometric-Assisted Unique Patient Identifier

ABSTRACT Over the years, healthcare institutions have relied on one or a combination of medical record number (MRN), demographics and issued documents such as name, sex, date of birth, social security number, and identity cards as patient identifiers. But all those have been proven unsuitable and inefficient as patient identifiers due to one or more of the following drawbacks: non-uniqueness, possessiveness, inability to establish the true identity of a patient, and limitedness of applicabili...

Effects of Addition of Carbide on Sewage Degradation

ABSTRACT The objective of this research is to investigate the effect of addition of carbide on sewage degradation. To provide answers to the above objective, some laboratory tests were conducted which include Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total coliform, pH and Suspended Solids (SS) tests. Six experimental set ups of 5liters of sewage were constructed in the laboratory under anaerobic condition. Each of the sewage contained 0g (which served as control), 1g, 2g...

Application of Common Management Information Protocol (Cmip) in Atm Network Bandwidth Allocation System

ABSTRACT Asynchronous Transfer Mode (ATM) of transmission is designed as a Broadband Integrated Services Digital Network (B-ISDN) transfer mode that supports a wide range of traffic classes with diverse flow characteristics. ATM guarantees different quality of service (QoS) demands placed on a network by different services (traffic types). The above powerful feats could be well achieved in ATM network with the application of an efficient and effective network resource management system. This ...

Optimisation of Data Throughout for Leo Satellite Downlink Using Trellis Coded Modulation.

ABSTRACT The line of sight communication between an orbiting LEO satellite and its Ground Station is time constrained by duration of visibility and number of visible passes in a day. In Equatorial region like Nigeria, the average duration is short and number of passes is very few. In most cases, the satellite size is small and therefore power generated on-board is also small, consequently the downlink budget is power constrained. Transmission bandwidth is also constrained by Regulations and n...

Performance Evaluation on the Utilization of an Established Variable Amplitude and Frequency of Vibrating Container for Potential Application in Slowing Down Sprouting in Yam

A variable amplitude and frequency of mechanical vibrating container working on cam and follower mechanism have been established. This study carried out a performance evaluation on the utilization of the established vibrating container for potential application in slowing down sprouting in yam. The vibrating container is electrically operated and a variable speed electric motor of 15, 000 rpm was selected for the machine. The performance parameters of the established mechanical vibrating cont...

Improvement of the Performance of Thermal Power Systems Through Energy and Exergy Analysis

ABSTRACT This research work is aimed at using the energy and exergy analysis with thermodynamic data to suggest improvements in the performance of steam and gas turbine power plants. In this regard, specific data from Egbin steam power plant and Geregu I gas turbine power plant were used for the analysis. In the analysis, scientific tools such as Engineering Equation Solver (EES) programme with built-in functions for most thermodynamic and transport properties was used to calculate the enthal...

Academic Portal for Electronic Engineering Department, University of Nigeria, Nsukka

ABSTRACT Internet is a huge technology that has brought life to computer and its applications. Most forms of information management and data sharing are done using the internet. The World Wide Web has made this possible. With a browser running on your PC, you can get connected to the entire world. The Internet has been used in different aspects of life most especially in the area of education. Web portal is that area in which the huge resources available on the Internet are being tapped. A we...

Experimental Performance Evaluation of Charcoal-Stove

ABSTRACT An experimental evaluation of the performance of a charcoal stove designed to reduce human labour and health hazards associated with frying in open fire was carried out. The channel- type metallic stove was lagged with 2.54 mm thick glass wool. The charcoal grate is 160 mm from the floor and has 44 holes of 12 mm diameter each to serve as air holes and provide passage for ashes, drilled in it. The charcoal bed is 230 mm from the bottom of the pot and the channel gap is 8mm. A 300 mm ...

Sms-Based Information Search and Retrieval System

TABLE OF CONTENT APPROVAL PAGE.............................................................................................................................................. iii DECLARATION................................................................................................................................................... iv CERTIFICATION............................................................................................................................................... v...

Appraisal of Construction Health and Safety Risk Management in Nigerian Construction Industry – a case study of the Building Industry

ABSTRACT The study examined the state of health and safety risk management practices in the building sector of the construction industry and has the objectives to: evaluate the construction risks inherent in the building sector of the construction industry; examine the health and safety risk management processes adopted by the construction industry in Nigeria; validate the existence of identified factor(s) militating against the implementation of health and safety practices in the constructio...

Design And Development of a Data Warehouse for School Information System Case Study of Heritage International School

ABSTRACT  Data warehousing and business intelligence are key enablers in the drive to harness management information and improve decision-making. They underpin the recent wave of interest in data mining and customer relationship management and create opportunities for performance improvements based on quantitative analysis at every level in an organization. Data warehousing is a relatively new field in information technology, and current research centers primarily on data warehousing in busi...

Charge Control Using Fuzzy Logic

ABSTRACT This work modified an existing lead-acid battery charging system by developing and simulating the conventional lead-acid battery and the fuzzy logic control of the lead-acid battery charging systems. The fuzzy logic system is developed using Mamdani inference system in Matlab toolbox and Simulink, and consequently employed in controlling the 12 conventional charging system adopted. The output voltage of the battery is controlled using matrix laboratory (MATLAB) in creating Fuzzy Infe...

Natural Variable Modeling and Performance of Interior Permanent Magnet Motor with Concentrated and Distributed Windings

ABSTRACT Interior Permanent Magnet (IPM) motor is widely used for many industrial applications and has relatively high torque ripple generated by reluctance torque. Since the configuration of the stator has great influence on reluctance torque, different stator configuration is necessary to improve the torque performance of IPM motor. Natural variable modeling and performance comparison of Interior Permanent Magnet Motor with Concentrated winding (CW), Short pitched and Full pitched distribut...

Development of a Model for Thin Layer Solar Drying of Salted Fish Fillets

Abstract A batch type direct passive solar dryer was designed and fabricated to dry salted tilapia fish fillets. The dryer has a capacity a capacity of 1500g/batch. The tilapia fish species were obtained from Domita Farms Nig. Ltd,.Uyo, Akwa Ibom State and transported immediately to Nsukka in a cold storage container. The salted fish fillet was prepared to conform to thin layer drying specification of 3.0mm-5.0mm thickness before drying. The solar drying experiments were conducted at the Depa...


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