INTERNATIONAL JOURNAL OF ENGINEERING AND TECHNOLOGY RESEARCH (IJETR) VOL. 16 (2)
ISSN-2329-7309 (PRINT) MARCH, 2019
Cambridge Research and Publications International,
Centre for African Humanity and Development Circle
(CAHDC), University of Nigeria, Nsukka,
Enugu State, Nigeria
Copyright © 2019 Cambridge Research and Publications International.
Please contact us for any enquiry.
SORET EFFECTS ON THE ONSET OF THERMOSOLUTAL INSTABILITY OF A ROTATING FLUID LAYER IN THE PRESENCE OF A MAGNETIC FIELD
*DR. ISOBEYE GEORGE **PROF. C. ISRAEL-COOKEY
*Department of Mathematics/Statistics, Ignatius Ajuru University of Education, Port Harcourt. **Department of Physics, Rivers State University, Nkpolu-Oroworukwo, Port Harcourt
This paper investigates soret effects on the onset of thermosolutal instability in a rotating saturated porous medium in the presence of a magnetic field. For the onset of both stationary and oscillatory convections, the linear stability theory is applied. The critical Rayleigh numbers for the onset of convection are determined in terms of the governing parameters: the porosity χ2, magnetic field, , rotation, , solutal Rayleigh number, , soret parameter, a, and Lewis number, . It was discovered that applying magnetic field on a rotating porous layer has the effect of raising the critical Rayleigh number thereby retarding the onset of convection.
Keywords: Soret effect, thermosolutal instability, rotating fluid, magnetic field, porous layer.
IMPLEMENTATION AND PERFORMANCE EVALUATION OF AN INVERTED PENDULUM USING A FUZZY LOGIC AND PID CONTROLLER
Department of Mechanical Engineering, Federal Polytechnic Bauchi, Nigeria
Implementation and performance evaluation of an inverted pendulum using LabVIEW and MatLab-Simulink to implement a Fuzzy Logic and PID (Proportional, Integral and Derivative) Controller is discussed in this publication. This was achieved using a simple Lego Mindstorm Cart. The motorized Cart is an easy-to-use and powerful robotic tool with great prospects. The system dynamics and kinematics are also highlighted based on the fundamental principle of the inverted pendulum, which finds its application in several self-balancing motorized equipment like the two-wheel self-balancing Segway vehicle. The principle of the inverted pendulum provides a solution to developing light and small vehicles required for navigation within confined spaces, which has made research in the area fascinating and extensive. The Simulink toolbox of MatLab computational software provides an intuitive graphical programming language and was used as a platform to implement the PID control strategy.
Keywords: PID Controller, Inverted Pendulum, Simulink-MatLab, LabVIEW, Fuzzy Logic
DESIGN AND IMPLEMENTATION OF ANLP GAS-LEAKAGE DETECTOR WITH SMS FEEDBACK AND ALARM SYSTEM
1ADEJUMOBI, O.K., 2SADIQ, M.O., 2AYENI, M.O. AND 2SAMUEL, A.O.
1Computer Engineering Department, the Polytechnic, Ibadan 2Electrical Engineering Department, The Polytechnic, Ibadan
Liquefied Petroleum (LP) Gas is a flammable hydrocarbon gas used as a fuel for many residential, cooking and commercial applications. LP gas liquefied through pressurization and is stored in gas bottles, cylinders and tanks. It can be propane, butane or propane-butane blends’. As useful as LP gas is, its leakage can lead to various accidents resulting into bothfinancial loss and human injuries, including death. This Paper therefore presents the ‘Design and Implementation of an LP Gas-Leakage Detector with Feedback Alert and Alarm System’. Here, the gas Sensor (MQ-6) is used to detect any gas leakage in a particular location; its output is then interfaced with a 12F1840 PIC-Microcontroller programmed in AssemblyLanguage through its ADC Port. A GSM Module with a registered SIM Card is connected to the output of the Microcontroller. The Module is configured to send gas leakage alerts in form of a short message service (SMS) tothe owner’s GSM phone to enable prompt action in the event of a leakage condition – an alarm also blows until the leakages are attended to, to prevent fire outbreak. .In conclusion, the design worked according to specifications. It is a simple, low cost but effective safety device that can be adopted for both domestic and industrial applications. However, it is recommended that the device be modified to incorporate an automatic fire extinguisher in case of sudden fire incident.
Index Terms: LPG, MQ-2Sensor, Microcontroller, Leakage, SMS Alert, GSM module
EXPERIMENTATION OF MICROCONTROLLER BASED DUAL AXIS SUN TRACKING SYSTEM FOR MAXIMUM SOLAR ENERGY GENERATION
ABDULLAHI KIRE MU’AZU1, IBRAHIM MUHAMMAD HARRAM2 & BASHIR SADIQ USMAN3
1, 2, 3 Department of Electrical/ Electronic Engineering Technology, the Federal Polytechnic, Damaturu, Yobe State, Nigeria
Innovations in solar energy are turning into a promising sustainable power source. Ordinarily fixed solar panel board with a specific angle of inclination restrains their zone of sun intensity because of revolution of the Earth. The automatic solar tracking system solves this problem. In this paper a dual axis solar tracker is planned and implemented to track the sun in both azimuth and altitude axes by using an AVR microcontroller. The executed framework comprises mostly of the ATmega 328 controller, DC motors, light sensors and relays. The results show that the designed low cost sun tracker increases the output power generation efficiency by 25-30% as compared with the fixed panel systems. The impact of temperature and panel covering by shaded cellophane on the performance of the designed system is also studied. The temperature and the colored cellophanes decrease the output power of the solar panel.
Keywords: Dual –Axis sun tracker, ATmega 328 Microcontroller, photo-voltaic, solar energy, maximum power point
OUTDOOR ILLUMINATION DESIGN AND LIGHT POLLUTION EFFECT ON ENVIRONMENT
1AHMAD M.Y. JUMBA, 2BALA HUSSAINI, 3ZAHRADDIN UMAR DAHIRU, 4HUSSAINI ABACA
1,3Department of Electrical/ Electronic Engineering Technology Federal Polytechnic Bauchi Bauchi State 2Department of Electrical/ Electronic Engineering Technology Jigawa State Polytechnic Dutse Jigawa State 4Department of Electrical/ Electronic Engineering Technology Idris Alooma Polytechnic Gaidam Yobe State
Light pollution does a lot of damage to the environment and health, as do other forms of pollution such as air pollution, noise pollution, water pollution, and soil pollution. While people are well aware of the problems associated with later, only very negligible percentage are aware of the light pollution. In contemporary world today we cannot do without outdoor lightning, this paper examines the effects of light pollution on the environment as described: the concept, the current status, the key problems. Aim of which is to create awareness among the professionals, general public, policy makers, also to offer some solutions, using today technology, in order the effects can be brought under control.
Keywords: Light pollution, outdoor illumination, health, environment, current status
PERFORMANCE COMPARISON OF DIFFERENT CONTROL TECHNIQUES APPLIED TO VEHICLE SUSPENSION SYSTEM
LADAN MAIJAMAA1, AMINU BABANGIDA2
1 Electrical and Electronics Engineering Department Federal Polytechnic, Bauchi, Bauchi State, 2 B.Eng. Electrical Engineering, Kano State University of Science and Technology, Wudil.
The road irregularities such as bumps, holes cause unnecessary vibrations in our vehicles which make passenger fells discomfort. The need to improve the compromise between the conflicting criteria such as road handling ability and ride comfort is critical. This makes it imperative to develop a reliable control technique for the suspension system. However, the presence of nonlinearities in the suspension makes this unrealistic with classical controls. In his paper a Model Predictive Control (MPC) for a vehicle passive suspension system is suggested. A quarter passive suspension system is considered and conventional control schemes such as Proportional Integral (PI), Full State Feedback (FSF) and Linear Quadratic Regulator (LQR) were designed for the system and compared with the proposed controller to indicate its effectiveness. The controllers were evaluated by the commonly used control response parameters such as the maximum overshoot, the settling time and the rise time. The simulation results obtained proved MPC to be a suitable controller for the suspension system.
Keywords: Suspension System, MPC, PI, FSF and LQR.
INVESTIGATING THE QUALITIES OF SOME SELECTED SACHET WATER IN BAUCHI METROPOLIS, BAUCHI STATE.
LAGASI, JOSEPH ELMA1 JOSIAH O. ULOKO2 ABDULLAHI DALHAT SALISU3 BENEDICT KEINDE OLAJIDE4
Department of Civil Engineering Technology, Federal Polytechnic, Bauchi.
Whereas the saying goes that no water no life, it is also important to add that consuming good quality water guarantees healthy living. Packaged water is the widely patronized form in which larger populace patronizes drinking water. This work set out to investigate the quality of five (5) randomly selected sachet water tagged, A, B, C, D and E, from various factories located in Bauchi metropolis. The use of Paqua lab was employed in carrying out this analysis to determine some physical (Color, Turbidity, Temperature, pH, Conductivity, and Total Dissolved Solid) and Chemical qualities. (Nitrite, Magnesium, Sulphate, Alkalinity, Phosphate and Calcium) The results obtained were compared with the National Standard for Drinking Water Quality. (NSDWQ). The investigation carried out, it revealed that the entire samples complied with the stipulated standard, hence showing their suitability and safety for human consumption.
Keywords: Quality, Parameter, Investigating, Standard, Micro-organism.
OVEN DESIGN USING COMPACT RIO AND LABVIEW
ORISANAIYE BRUNO AKINJIDE
Department of Mechanical Engineering Technology, Federal Polytechnic Bauchi, Nigeria
Implementing an embedded system requires different methodologies depending on the scale and functionality of the system. This paper highlights the use of a Compact RIO to implement a simple but effective temperature control system. The cRIO is a small standalone embedded system. It consists of a real time controller, a Field Programmable Gate Array (FPGA) and I/O modules. It can be interfaced with a Windows PC to create a graphical user interface. The aim of this paper is to highlight the use of Compact RIO and LabVIEW Virtual Instrument software to implement the design of a laboratory oven based on a maximum operating temperature of 800ᵒ, also required to meet the following specifications in the following order. Door to close using a switch, which will light up the Door Closed LED. Next, the door to lock for temperatures greater than or equal to 100ᵒ, using a solenoid, and indicating the output by lighting up the Door Locked On/Off LED. This starts the Oven by triggering a switch and activating a relay that turns on the heater while lighting up the Heater On/Off LED. The Oven temperature is set using a Potentiometer and temperature monitored using a thermocouple. The temperature out of range indication light comes on if the temperature is not within the set temperature.
Keywords: cRIO, LabVIEW, Control, Oven, temperature
DEVELOPMENT AND CONSTRUCTION OF PLAIN BLANKING-PUNCHING DIES FOR FLIP-FLOP FLOOR MAT USING COMPUTER NUMERICAL CONTROL MACHINE
USMAN JIBRIN RUMAH AND IBRAHIM LADAN MOHAMMED
1Department of Mechanical Engineering, College of Engineering, P.M.B. 2021, Kaduna Polytechnic, Tudun Wada, Kaduna.
A die is a tool intended to cut or shape sheet metal or similar materials. Basically, the die proper consists of the die block and the punch. The die block is the part of the die that contains a hole that has the same outline as the piece that is to be punched. The punch fits into the hole in the die block. It is the part to which power is applied for performing the cutting operation. This paper discuses the production of a punch and a die block where Computer Numerical Control (CNC) program was generated for both the punch and the die block, 3mm end mill cutter was used as cutting tool. The program was run on B555 CNC Training Mill, the die block and the punch perfectly matched with a very close clearance fit, which is not obtainable with on conventional milling machine. The sample punched was neat and accurate.
Keywords: Production; Program; Computer Numerical Control; Die.
THE NEED FOR RICE HUSK BRIQUETTE AS AN ALTERNATIVE SOURCE OF FUEL
MUSA A. JATTO.
Departments of Mechanical Engineering, Federal Polytechnic Damaturu, Yobe State
This study investigates the usefulness of rice husk as an alternative fuel for household energy. The effect on environment by agricultural waste is on increase and causing a lot of problem. Adequate means of disposing these waste are lacking, hence, converting them to other useful products such as briquettes for domestic fuel is desirable. Much attention is being focused on identifying suitable alternative and renewable energy sources, which can provide high-energy outputs, to replace fuel wood energy sources. The total energy stored in terrestrial biomass is not only enormous but is also highly available and renewable. Biomass if properly harnessed can form a substantial part of future energy sources which will reduce the pressures on the global energy crises. The type of biomass required is largely determined by the energy conversion process and the form in which the energy is required. This paper was given an overview of the different types of energy generation using biomass sources, focusing on the challenges and implications of rice husk for the Nigerian society.
Keywords: Rice, briquette, fuel, biomass, and rice husk.