Engineering

Research Papers/Topics in Engineering

DETERMINATION OF ENGINEERING PROPERTIES OF SANDCRETE BLOCK USING DIFFERENT GRADE OF CEMENT

The ultimate purpose of this project investigates COMPARATIVE STUDY OF THE ENGINEERING PROPERTIES OF SANDCRETE BLOCKS USING DIFFERENT BRANDS/GRADE OF CEMENT.Over 90% of physical infrastructures in Nigeria are being constructed using sandcrete blocks making it a very important material in building construction. It is widely used in Nigeria, Ghana, and other African countries as load bearing and non-load bearing walling units. For a long time in Nigeria, sandcrete blocks are manufactured in man...

Evaluating the Effect of Adding Steel Machining Chips on the Properties of Clay

Abstract:Steel machining waste known as chips is a kind of waste that can be returned to the process of raw material for steel fabrication or else be traded as co-product of other industrial activities. The reuse of this product is of great importance owing to the economic and environmental aspects. This work investigates the effect of steel machining chips as additive on the properties of clay. The physical properties of the clay and steel machining chips composite were determ...

Energy Efficiency in Cement Industry: A Case Study of Lafarge Cement, Zambia

Abstract The main aim of this research is to determine how energy improvement, efficiency and conservation can be achieved in industry such as the cement plant. Energy, is an essential ingredient for socio-economic development and economic growth. The objective of the energy system is to provide energy services. Energy services are the desired and useful products, processes or indeed services that result from the use of energy, such as for lighting, provision of air-conditioned indoor cl...

TRIAL ERROR AND OUTLIER IN AGRICULTURAL EXPERIMENT DATA AND THEIR HANDLING

AbstractOutlier is a questionable plot value which differs greatly from the mean of all other replications of a specific treatment while trial error may occur as a result of a mistake in measurement or transcription during data collection or entry. The presence of any of the two confounds the inferences made from the data analyses especially the F-statistic whose estimate is based on sample means and variances. This report was intended to show how Genstat statistical software package assists ...

Introduction to Electrical Engineering Science

This paper is an introduction to electrical engineering science that covers basic topics such as electric current flow, joule's law etc. and sub-topics of engineering science in the field of engineering.Chapter One: Electric Current FlowChapter Two: Simple D.C. CircuitChapter Three: Electric EnergyChapter Four: Electrostatics, Capacitor & Capacitance

Determination of Physical Properties of Afzelia Africana Seeds

AbstractSelected physical properties of Afzelia africana seeds were determined at four moisture levels: 10.60%, 12.80%, 15.20% and 18.40% wet basis (w.b). The seeds were categorized in three batches according to their weights: Batch I (2g

Impact Damage to Selected Agricultural Produce from South Eastern Nigeria.

ABSTRACTAn Impact Test Apparatus was developed to determine the impact damage and bruise parameters of five fresh agricultural produce, namely: banana (Musa spp), tomato (Lycopersicon esculentum), sweet potato (Ipomea batatas), cassava tuber (Manihot esculenta) and lemon (Citrus limon) using Impact – Drop Height method. A constant impact energy of 0.9J – 4.5J was maintained as drop heights ranged from 0.20m – 1.00m. The bruise diameter, bruise depth, bruise width, bruise volume, bruise ...

Selected Physical And Aerodynamic Properties Of African Breadfruit (Treculia africana) Seeds From South Eastern Nigeria

Physical and aerodynamic properties of African breadfruit (Treculia africana) seeds were studied at four moisture levels: 12.50, 15.00, 17.50 and 20.10% dry base (w.b). As moisture content increased from 10.50 to 20.10% (w.b), the average weight, major diameter, minor diameter, intermediate diameter, geometric mean diameter, arithmetic mean diameter of the seeds ranged from 0.35±0.08 to 0.60g±0.04g, 8.08±0.90 to 10.05±0.60mm, 4.04±0.53 to 5.00±0.10mm, 2.96±0.43 to 4.60±0.40mm, 4.52±0...

Performance Analysis of High-Efficiency Motor and Variable Speed Drive in Black Tea Processing Machinery

AbstractPurpose: The present old standard efficiency motors (SEM) in black tea processing machinery consume large amount of electricity, thus increases the cost of production. Technologically improved high-efficiency motors (HEM) or HEM coupled with variable speed drive (VSD) could be useful to achieve high-energy efficiency. Therefore, a study was conducted with the focus to determine the feasibility of introducing HEM and VSD in withering and rolling machinery of black tea manufacturing.Met...

Drilling Cost Optimization for Extended Reach Deep Wells Using Artificial Neural Networks

AbstractGlobal Petroleum reserves are currently getting depleted. Most of the newly discovered oil and gas fields are found in unconventional reserves. Hence there has arisen a need to drill deeper wells in offshore locations and in unconventional reservoirs. The depth and difficulty of drilling terrains has led to drilling operations incurring higher cost due to drilling time. Rate of Penetration is dependent on the several parameters such as: rotary speed(N), Weight-On-Bit, bit state, f...

Optimization of the Operating Parameters for the Extractive Synthesis of Biolubricant from Sesame Seed Oil via Response Surface Methodology

This study examined the optimization of the transesterification reaction of sesame methyl esters (SMEs) with trimethylolpropane (TMP) to synthesise sesame biolubricant (SBL). Response surface methodology (RSM) using central composite design (CCD) was employed for the experimental design. Effects of temperature, mole ratio and reaction time on the yield of SBL were evaluated. The predicted yield after process optimization was found to agree satisfactorily with the experimen...

Production of Environmentally Adapted Lubricant Base Stock from Jatropha Curcas Specie Seed Oil

Jatropha curcas seed oil was studied for the synthesis of trimethylolpropane based biolube basestock via chemical transesterification of Jatropha methylester with trimethylolpropane (TMP) using calcium hydroxide catalyst. Reactions temperatures ranged between 80 and 160 C and methyl esters to TMP mole ratios ranged between 3:1 and 7:1. Product analysis, ester groups and physio-chemical properties were obtained by gas chromatography, Fourier transform i...

Synthesis and Tribological Evaluation of Sesame Oil-based Trimethylolpropane Ester

Synthesis of polyol ester as a novel biodegradable base stock from sesame seed oil for lubricant production was conducted via chemical transesterification of sesame methylester with trimethylolpropane (TMP) using calcium hydroxide catalyst. The reactions were carried out under varying temperatures (80 C160 C) and methyl esters to TMP mole ratios (3:1 to 7:1). Product’s analysis was performed using gas chromatography. Product’s physicochemical characteristics determi...

EXERGY ANALYSIS OF COUNTER FLOW FORCED DRAFT WET COOLING TOWER (CASE STUDY OF PORT HARCOURT REFINERY)

This study evaluated the exergy analysis of the mechanical forced draft counter flow of the Port Harcourt Refinery cooling towers. The exergy analysis was carried out using the exergy destruction method. The results of the investigation and optimization show that the exergy destruction increases with the increases in mass flow rates of the cooling water, makeup water, and Air. Also, exergy destruction decreases with the decreases in Humidity Ratio, Heat sink Temperature, and&nb...

A Study On Geotechnical Investigation Of Dhaka Mass Rapid Transit Development Project (Dhaka Metro Rail)- Line-06

ABSTRACT      Metro Rail is a mass rapid transportation system and also environment friendly. It is also a modern technology for transportation. To overcome the future demand and to make a short and less time consuming transportation system, Bangladesh Government has taken this project. It is a fast and time saving transportation system which is really needed for Dhaka. This study covers to find out geotechnical investigation and to compare the pile bearing  capacity&...


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