Faculty of Engineering, Technology, Applied Design & FineArt (FETADFA)
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Browsing Faculty of Engineering, Technology, Applied Design & FineArt (FETADFA) by Subject "Analysis"
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Item Restricted Analysis of Power Outages in Kabale Town: A Case Study of 33 KV Mbarara North-Kabale West Feeder.(Kabale University, 2024) Atibuni, YofatThis project examined the 33kV Mbarara North-Kabale feeder, a vital power supply line for Kabale Town, to address the persistent power outages affecting the region. The primary objectives were to evaluate the existing feeder infrastructure, analyze outage data, and propose solutions to minimize these disruptions. Spanning 145 km, the feeder traverses challenging environmental and geographical terrain, contributing to infrastructure stress and reliability concerns. The study included a comprehensive analysis of the feeder's infrastructure and load characteristics. A load flow assessment highlighted issues such as voltage fluctuations, significant power losses, and points of failure stemming from aged or insufficient equipment. Outage data revealed technical challenges, including surge arrestor failures, broken jumpers, damaged poles, and improper fuse ratings. Faulty surge arrestors were unable to clear faults, and over-sagging conductors posed risks of low-voltage and high-voltage contact. Environmental factors further exacerbated these problems, with tree cutting in Kyobugombe and Ndija, forested areas in Maziba, deteriorating poles in Katinda, and frequent lightning in Rubaya causing line faults and prolonged outages. To mitigate these issues, the study proposed several technical and operational interventions. These included upgrading surge protection devices, replacing degraded infrastructure, enhancing tree trimming and vegetation control, and ensuring the availability of correctly rated fuses in the Ugandan market. Additional recommendations involved improving the functionality of Automatic Voltage Regulators (AVRs) and Ground Voltage Regulators (GVRs) to stabilize voltage along the feeder.Item Restricted Design and Analysis of thermosyphon Solar Water Heating System.(Kabale University, 2024) Kakuru, StephenIn rural areas of Uganda, access to affordable hot water is a persistent challenge with communities often relying on firewood and charcoal for water heating which contributes to deforestation, air pollution, and health hazards hence respiratory diseases like asthma, lung cancer, TB, and allergic disease, climate changes and global warming. This research aimed at the design and analysis of a thermosyphon solar water heater that heats water using solar energy which is healthy, environmentally friendly, cost-effective, easily maintained, and simple since it depends on natural convection and gravity force for water flow. The system is made of a 4m2 flat plate collector to convert solar energy into thermal energy, an insulated stainless steel storage tank of 240 liters capacity for storing hot water, a pipe system for transporting water, and a painted mild steel frame for supporting the system. Various principles, assumptions, and formulae were used in the design of the system components to obtain the appropriate dimensions of parts and the best materials selected. The 3D modal of the system was made using SOLIDWORKS, imported into ANSYS workbench for thermal analysis, and solidworks2020 for fluid flow analysis, and then all results generated were well discussed.Item Restricted Design and Analysis of a Chamber for Thermal Sterilization of Irish Potatoes.(Kabale University, 2024) Igiraneza, JackinThis study examined the process that was undertaken to design and analyze a chamber for thermal sterilization of Irish potatoes. This chamber is part of a unit that will be used for sterilization and boiling of Irish potatoes. In this system, peeled and sliced Irish potatoes to the desired size are introduced into the system by the conveyor, and steam is sprayed into the chamber onto the potatoes until potatoes are boiled and sterilized. The processed potatoes are then unloaded for subsequent processing. The chamber emphasizes efficient handling of Irish potatoes during loading, processing, and unloading of processed potatoes thus the incorporation of a wire mesh conveyor in the system. Thermal sterilization is a process that focuses on the destruction/denaturing of bacteria contained within food by the application of heat at given temperatures and for a given period of time. Thermal sterilization is aimed at extending the shelf life of food. The design and analysis of the chamber begins with understanding the different processes of thermal sterilization of foods which include aseptic processing and canning, and also reviewing the current systems used in the sterilization of foods such as pasteurizers/ sterilizers for liquid foods and retorts for solid foods. The design of the chamber focuses on material selection and sizing of various components of the chamber using various methods based on the conditions of the chamber during operation such as pressure inside the chamber and the temperature of steam being introduced into the chamber. The analysis of the chamber emphasizes critical parameters such as stress and temperature distributions in the chamber by employing simulations in ANSYS to ensure that the design is safe for the conditions of operation.Item Restricted Design and Analysis of a Heat Exchanger for Irish Potato Pasteurization and Boiling.(Kabale University, 2024) Ssesanga, EdgarThe design of a shell and tube heat exchanger (STHE) plays a crucial role in various industrial applications, particularly in steam generation processes. This study focuses on the engineering and thermal analysis of shell and tube heat exchangers, which are widely used for their high efficiency, robustness, and versatility in handling different fluids. The analysis begins with an overview of various steam generators, including fire-tube, water-tube, nuclear steam reactors, and once-through boilers, highlighting their operational principles and applications. In fire-tube steam generators, hot gases produced from combustion pass through tubes submerged in water, where heat transfer occurs. Conversely, water-tube boilers circulate water within tubes heated by external flames, allowing for higher pressure and temperature operation. The once-through boiler represents an advanced design where water flows continuously through the heat exchanger, producing steam without the need for a steam drum. Each type of steam generator presents unique challenges and advantages, influencing the selection of an appropriate heat exchanger design. The design analysis of the STHE emphasizes critical parameters such as flow arrangement, surface area, and material selection. Additionally, the integration of design considerations for engineering detailing as well as simulation using ANSYS software and modeling using Solidworks. The findings underscore the significance of tailoring the STHE design to specific steam generation needs, considering factors like fluid properties, thermal load, and operational constraints. This study contributes to the ongoing development of efficient thermal systems and emphasizes the importance of innovative heat exchanger designs in enhancing steam generation efficiency across various industrial sectors.Item Restricted Design and Analysis of a Hydraulic Scissor Lift Trolley.(Kabale University, 2024) Katwesigye, WilfredThis project focused on designing and analyzing a hydraulic scissor trolley to address the safety hazards and inefficiencies associated with manually handling heavy food sacks in warehouses and food stores. Current practices often involve workers climbing trailers using makeshift wooden stairs without guardrails, creating serious risks of falls and injuries. To improve safety and efficiency, the hydraulic scissor trolley offers a secure and ergonomic solution that minimizes injury risks while boosting worker productivity and operational flow. Powered by hydraulic fluid that drives a cylinder, the scissor lift allows for vertical movement of the platform. This project provides a comprehensive overview of essential components, such as hydraulic cylinders, scissor arms, and the base structure. Materials were selected for optimal durability and strength to withstand operational demands. Engineering sketches detail component dimensions, supported by static stress analysis performed using advanced software like Ansys and SolidWorks. The analysis includes calculations for lift height and additional lifting range, illustrating how this innovative design enhances safety and optimizes material handling in food storage facilities. By implementing this solution, the project aims to reduce delays and bottlenecks, thereby increasing overall productivity in warehouse operations.Item Restricted Design and Analysis of a Serial Manipulator for Pick and Drop Objects for Material Handling at Uiri Metal Forming Workshop.(Kabale University, 2024) Behangana, AbertThis dissertation focused on the design and analysis of a 3-degree-of-freedom (3-DOF) serial manipulator tailored for handling hot objects at the UIRI metal forming workshop. The design process prioritized critical customer requirements, including maintainability, safety, usability, and adaptability. Five design alternatives human hand, jib crane, mobile crane, industrial serial manipulator, and belt conveyor were conceptualized and evaluated using a Pugh matrix against criteria such as load capacity, precision, and cost-effectiveness. Static and dynamic analyses conducted via ANSYS Workbench validated the manipulator's structural integrity under a 50N load, confirming its resistance to significant deformation during operation. MATLAB's ode45 and Simulink were employed to simulate joint motion and trajectory planning, providing insights into the manipulator's dynamic behavior under varied scenarios. Material selection was integral to the study, with A-36 steel, 6061 aluminum alloy, and 304 stainless steel analyzed for properties like deflection and stress resistance. A-36 steel emerged as the optimal choice due to its superior weight-to-structural stiffness ratio, while 6061 aluminum proved advantageous for weight-sensitive applications. Motion planning employed the Jacobian matrix to identify potential singularities and discrepancies between desired and actual trajectories. This analysis enhanced the understanding of motion control and trajectory optimization. Future recommendations include refining control algorithms, integrating advanced safety features, and exploring innovative materials to improve performance. Training programs for operators will also be developed to enhance usability and ensure safe operation. By addressing these aspects, the manipulator design advances precision, reliability, and operational efficiency, contributing significantly to industrial applications requiring high-performance automation solutions.