Research Papers/Topics in Agricultural Engineering

Development And Performance Evaluation Of A Non-Weighing Lysimeter For African Spinach

ABSTRACT A non-weighing lysimeter was designed, fabricated, tested and installed at Arochukwu, Abia State, Nigeria, where the farmers who engage in dry season vegetable production do so with no knowledge of irrigation water requirements. This method tends to either over-irrigation or under-irrigation below the vegetable water requirements. Too much water can leach costly fertilizers to depths below the root zone, where both the water and fertilizer are permanently lost. Too little water...

Development And Evaluation Of An Integral Passive Solar Crop Dryer

ABSTRACT A direct-heated solar crop dryer suitable for rural farmers and households was developed and evaluated. The simple structured dryer was fabricated using square and round pipes, aluminium sheet, Perspex, wire gauze, bolts and nuts. Its performance was evaluated using cassava chips and three cylindrical aluminium chimneys of heights 1200mm, 800mm and 400mm; all of equal diameter. Mature cassava roots were peeled, washed, chopped into flat circular chips of 10mm thickness and spr...

Determination Of The Compressive Strength Of Palm Kernel Shell Concrete

ABSTRACT This study is on the determination of the Compressive Strength of Palm Kernel Shell Concrete. The effect of percentage replacements (0, 25, 50, 75 and 100%) of crushed granite with palm kernel shell on density and compressive strength of concrete is presented. Concrete cube specimens of mix 1:2:4 were prepared with water-cement ratio of 0.6. The cubes (150mm×150mm×150mm) were cured using water-submerged curing until testing ages of 7, 14, 21 and 28 days when their densities a...

Design And Development Of A Hybrid Solar/Charcoal Fish Smoke-Dryer

ABSTRACT An indirect, natural convection solar-assisted charcoal smoking system was designed and fabricated in one of the host communities of the Federal University of Technology, Owerri where most of the fish farmers and processors adopt the conventional method of drying fishes, that is, using firewood. This method which works well during the dry period of the year is very inconvenient during the rainy season. Given the excessive heat generated by firewood and its resultant effect on t...

Using Nile Basin- Decision Support System (Nb-Dss) For Management Of Khour Abu Habil Water Resources

ABSTRACT Being able to assess the hydrologic ability of Abu Habil catchment to satisfy its future water demands is crucial in order to plan for the future and make wise decisions. In this study a Scenario Analysis approach was used by utilizing NB-DSS model for water resource management, evaluation allocation and planning, in order to assess the impacts of possible future water demands on the water resources of Khour Abu Habil catchment. For each scenario, the main outputs of the model ...

Synthesis Of Solid Acid Catalysts From Kaolin For Efficient Production Of Biodiesel From Shea Butter

ABSTRACTThis study reports synthesis of solidacid catalyst from cheaper raw materials for efficient biodiesel production. The dissertation consists of six main research section including: (1) Synthesis and characterization of ordered solidacid catalyst from kaolin; (2) Synthesis and characterization of hierarchical nanoporous HY zeolite from acid activated kaolin; (3) Synthesis of nanoporous HY zeolites from activated kaolin, a central composite design (CCD) optimization study; (4) Synthesis ...

A Computer Program for Agr-machinery Cost Estimation

AbstractThe computer program for machinery cost estimation (CP-Mace) is aWindows based software program that can be run on a Windows XP orhigher system on computers. It is a user-friendly interactive program writtenin VISUAL BASIC 6 programming language for machinery management. Itallows the user to interact with it by entering the required inputs and it willcarry out the interactive calculations. The program enables the user to printout the output which is displayed on the screen.The ...

Prediction Of Runoff And Sediment Yield From Agricultural Watersheds Using Annagnps: A Case Study Of Upper Ebonyi River Watershed, Enugu State.

Abstract Sediments resulting from soil erosion are the major non-point source pollutant of surface waters in agricultural watersheds. Annualized Agricultural Non-Point Source Pollution Model (AnnAGNPS) is a computer-based watershed model that predicts non-point source pollutants and runoff loadings within agricultural watersheds. AnnAGNPS v5.2 was used in conjunction with Arcview 3.2 GIS to predict streamflow and sediment discharges from a 250.89 ha agricultural watershed, Upper Ebonyi...

Exhaust Gases Energy Recoverable From Compression Ignition Engine Using Diesel And Biodiesel

ABSTRACT The broad objective of this research was to recover exhaust gases thermal energy from internal combustion engines for use in other applications. The specific objectives were: to determine the amount of thermal energy lost through exhaust gases at various engine speeds and loads; to determine the amount of energy recovered from exhaust gases at various engine speeds and loads; and to simulate the amount of maize that could be dried with the recovered energy. The experimental set...

Effectiveness Of Deficit Irrigation Scheduling On Crop Water Use Efficiency- A Case Of French Beans In Njoro Nakuru Countykenya

ABSTRACT Producing enough food in Kenya to better feed people and generate adequate income for the farmers is a great challenge. This challenge is likely to intensity, with a population that is projected to increase to 66.3 million in 2030. Scarce water resources and growing competition for water will be reduce its availability for irrigation, which necessitating major changes in irrigation management and scheduling in order to increase the efficiency of use of water that is allocated t...

Evaluation Of The Impact Of Land Use Change On Catchment Hydrology: The Case Of Wundanyi River Catchment In Taita Hills, Kenya

ABSTRACT The conversion of forest land to agricultural land and urban settlement usually increases soil erosion, and volume of storm runoff in a catchment. In Kenya, the rural communities are encroaching into the humid and marginal areas to open up new lands for agricultural production and settlement. These changes have led to environmental degradation, which has negatively altered the hydrologic regimes of many catchments in Kenya. The Wundanyi River catchment is one of the catchments ...

Influence Of Temperature, Air Flow Rate And Slice Thickness On Egg Drying Rate And Protein Content Under Forced Convection

ABSTRACT The availability of egg products for consumption is hindered by spoilage and breakages during processing. Forced convection drying serves as one of the methods of solving these challenges. However, the influence of temperature, airflow rate and slice thickness on forced convection drying of eggs is inadequately documented. Therefore, drying of eggs was investigated under forced convection process. The mode of airflow and the food material was the continuous concurrent type. Raw...

Performance Of An Experimental Biomass Micro Gasifier Cook Stove

ABSTRACT Most stoves based on the principle of micro gasification have improved thermal efficiencies with low emissions, however, knowledge on the effect of the stove operation at different air flow rates on thermal efficiency, fire power, emissions, specific fuel consumption and burning rate is scarce. The main objective of this research was to evaluate performance a micro gasifier cook stove. An experimental forced draft cook stove was therefore developed using the available materials...

Optimization Of Threshing Performance Of A Spike Tooth Sorghum Threshing Unit

ABSTRACT Sorghum threshing in Kenya is characterized by high grain breakages and accounts for grain loss of 4% of total production. Existing threshing methods are time consuming and yield a low throughput. Grain losses mainly occur due to grain damage and incomplete removal of grains from panicles. In order to reduce the losses, optimal levels of machine and operational parameters influencing threshing need to be established. A prototype spike tooth sorghum thresher was therefore develo...

CLASSIFICATION AND EVALUATION OF CROP STORAGE STRUCTURES IN WESTERN NIGERIA

AbstractA survey involving the use of questionnaires and personal communication during field trips was carried out in Western Nigeria with the aim of classifying and assessing the efficiency of the existing structures for the storage of crops. Barns; cribs; trenches; platforms; warehouses and silos are among the important. storage structures. The existing structures could be efficient with proper management but a major limitation of most of them is the low unit capacity which is inadequate to...


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