Table of Contents

Overview of the Design and Simulation of Solar Powered

Waterpumps for Boreholes

Abubakar Jibrin Abdullahi, Tanimu Garba Ibrahim,

and Aminu Omeiza                                                                                         1-15

Utilization of Talinum Triangulare (Water-Leaf) in Accessing the

Level OF Some Heavy Metals in Selected Farm Sites around Veritas

University, Abuja, Nigeria

Ebiekpe, V.E., Ogwuda, U.A. and Agbaghare, D.E.                                           16-33

Analysis of the Design Parameters of a Cyclone Dust Separator

Abubakar  N. Mohammed,  Zakari Ya’u Ladan  and Saanyol I. Igbax             34-46

Block Coded Modulation System Employing Concatenated Block

Codes

Gilbert A. Ibitola and Azeez W. A                                                                    47-61

Simulation of a Fluid Catalytic Cracking Regeneration Unit

Okpani, Fand Ogbeide, S. E                                                                             62-73

SIMULATION OF A FLUID CATALYTIC CRACKING REGENERATION UNIT

Okpani, Fand Ogbeide, S. E

Department of Chemical Engineering

University of Benin, Benin City, Nigeria

Email: Fancisibian302@yahoo.com samuelogbeide@uniben.edu

ABSTRACT

There is an ever increasing demand for high quality yields and products from chemical processes. Chemical processes are very complex to undusted design and operate.  In the petroleum refinery systems, the regenerators of the fluid catalytic cracking unit play key roles.  The reactor-regenerator system is the main facility. The activation of the spent catalyst takes place in the regenerator.  A model of the regenerator that adepts two phase theory of the regeneration of the spent catalyst has been presented using Aspen Hysys version 8.4.  The model is based on its temperature, and pressure conditions and flow rate of the air.  The profiles of the quality of the burnt coke, air flow rate, flue gas compositions are presented.  These parasites were compared with practical data from a Nigerian refinery.

BLOCK CODED MODULATION SYSTEM EMPLOYING CONCATENATED BLOCK CODES

Gilbert A. Ibitola¹ and Azeez² W. A

¹Department of Physical Sciences,

Ondo State University of Science and Technology, Okitipupa.

²Department of Physics, The Polytechnic, Ibadan, Nigeria.

E-mail:   ibitolaieee@gmail.com¹  and waazeez@yahoo.com²

ABSTRACT

Concatenation can be used to obtain block-coded modulation [BCM] schemes of various long block lengths using short block codes. Both the inner and the outer codes correspond to a BCM scheme. The inner block code is considered to be a virtual expanded channel signal constellation by the outer block code. The scheme considers systematic concatenation of general (non-linear) block codes of a fixed block length 3. Codes obtained are of length , where q is the number of stages each of block length 3. Encoding and soft decoding schemes for these codes are discussed in this paper.

ANALYSIS OF THE DESIGN PARAMETERS OF A CYCLONE DUST SEPARATOR

Abubakar  N. Mohammed,  Zakari Ya’u Ladan  and Saanyol I. Igbax

Department of Mechanical Engineering,

Kaduna polytechnic, Kaduna.

E-Mail:abdrrrauf35@gmail..com

ABSTRACT

Cyclones have often been regarded as low-efficiency collectors. However, efficiency varies greatly with particle size and cyclone design. Advanced design work has greatly improved cyclone performance. This paper have discussed the design parameters required to construct a high performing cyclone through the application of the classical cyclone design, However, the pressure drop in this design does not consider any vertical dimensions as contributing to pressure drop, This is a misleading in that a tall cyclone would have the same pressure drop as a short one as long as cyclone inlets and outlets dimensions and inlet velocities are the same.

Texas  cyclone design model was used to obtain an accurate pressure drop and sizing of cyclone, The Texas cyclone design approach to design cyclones was to initially determine optimum inlet velocities (design velocities) for different cyclone designs, hence using the inlets velocity a cyclone dimension can be determined.

Keywords: Cyclone, Inlet velocity, pressure drop, sizing

UTILIZATION OF TALINUM TRIANGULARE (WATER-LEAF) IN ACCESSING THE LEVEL OF SOME HEAVY METALS IN SELECTED FARM SITES AROUND VERITAS UNIVERSITY, ABUJA, NIGERIA

Ebiekpe, V.E., Ogwuda, U.A. and Agbaghare, D.E.

Department of Pure and Applied Chemistry

Veritas University, Abuja

 E-mail: ebivik@yahoo.com

ABSTRACT

Utilization of Talinum triangulare  (water-leaf) in accessing the level of some heavy metals in selected farm sites around Veritas University, Abuja, Nigeria was investigated using Atomic Absorption Spectrophotometer (AAS). The results obtained indicated the following ranges for the metal in the farm sites soil (in mg/kg): Farm site A: Cu(0.12), Fe(0.1), Zn(2.62), Ni(0.18), Pb(0.01), Cd(0.001) and Cr(0.001); Farm site B: Cu(0.26), Fe(0.18), Zn(1.51), Ni(1.06), Pb(0.02), Cd(0.003) and Cr(0.002); Farm site C: Cu(0.03), Fe(0.13), Zn(1.84), Ni(0.51), Pb(0.06), Cd(0.006) and Cr(0.002); Farm site D: Cu(0.06), Fe(0.11), Zn(1.22), Ni(0.16), Pb(0.05), Cd(0.002) and Cr(0.002); Farm site E: Cu(1.02), Fe(0.21), Zn(2.21), Ni(0.22), Pb(0.05), Cd(0.002) and Cr(0.003).The concentrations of the metals analyzed in the different farm sites were greater than those obtained in the control sample, but however, the obtained values were all within the NAFDAC/WHO permissible limits. The effects and environmental health implications of these heavy metals on humans are also discussed.

OVERVIEW OF THE DESIGN AND SIMULATION OF SOLAR POWERED WATERPUMPS FOR BOREHOLES

Abubakar Jibrin Abdullahi, Tanimu Garba Ibrahim, and Aminu Omeiza

Department of Mechanical Engineering, College of Engineering, Kaduna Polytechnic

E-mail: abdrrrauf35@gmail.com    

ABSTRACT

Recent studies confirm that fossil fuel consumption accounts for the majority of greenhouse gas emissions which have largely contributed to global warming. Therefore, utilization of renewable sources is vital today. A step towards increasing the share of renewable energy in the energy mix is the design of solar powered pumps which is discussed in this research. The basic principle of a solar pump is to utilize the energy generated by the solar panel and stored in the battery. The charged battery acts as a fuel tank and is used to supply electricity to drive the pump that supplies water for commercial, industrial and agricultural use. This paper has discussed  from past literature the use of modeling and simulation to determine the performance of a photovoltaic pump, and produced a model for solar water pumping system and simulates the results that will gives a PV size, pump size and pump efficiency and the cost of providing water.

Keywords: Photovoltaic, solar pump, submersible, cost of energy, renewable, panel

Received for Publication on 1 March 2019 and Accepted in Final Form 15 March 2019