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An Optimized Design of Heat Pipe Based Evacuated Tube Solar Water Heater with Thermal Storage (Case Study : - Wonji-Shoa Sugar Factory) Thesis

Daniel Shitaye; Balewgize Amare; Nebyou Bogale (2019-06)

Solar energy is one of the promising renewable sources in a direct and indirect methods of en ergy conversion. Solar water heating is simplest and most direct application of solar radiation into heat. The study aims to ...

Design and Experimental Evaluation of Solar Water Pasteurization with Integrated Heat Exchanger for Water Treatment: Case study of Jimma Thesis

Diro Kebebe; Ancha Venkata; Debela Geneti (2019-06)

Solar energy is one of the clean and environmentally friendly renewable energies gathered from the sun. It is the primary sources for all forms of energy. Water is one of the most important natural resources in the ...

Manufacturing and Mechanical Characterization of Metal-Polymer-Metal Sandwich Composites. Thesis

Girma Worku; Anil Kumar; Yegetaneh Tesfaye (2019-12)

Metal-polymer-metal (MPM) sandwich composite consists of two or more metal sheets laminated hot pressed layer by layer with low strength of polymer material. To achieve enhanced mechanical properties of MPM materials ...

Design, Thermo-Mechanical Analysis and Optimization of IC Engine Piston by Using FEA Thesis

Kibebe Derbew; Balewgize Amare; Fikadu Kifle (2019-06)

Internal combustion engine piston is subjected to high temperature and pressure due to direct contact with the combustion process inside the cylinder; therefore for smooth running of vehicle piston should be in proper ...

Fatigue Analysis of Wind Turbine Blade Made of Composite Material Thesis

Fakada Dabalo; SeungwonYoun; Johnson Sontosh (2019-06)

Currently, utilization of renewable energy sources is the major international attention to overcome the global warming. Wind energy which is generated from wind flow by wind turbine is one of a promising sources of ...

Analysis Of Thin-Walled Composite Beams With Stiffer Box For Enhancing Rigidity Thesis

Mesfin Demise; Seungwon Youn; Abiyou Solomon (2019-07-17)

Fiber reinforced composites have a set of attractive material properties such as higher tensile strength, high stiffness, corrosion resistance, and light weight which make them suitable for a variety of structural ...

Numerical, experimental analysis and parametric optimization on friction stir spot welding of AA1100 Thesis

Mohammed Endris; Anil Kumar; Lingerew Enbakom (2019-12)

In order to replace steel with aluminum in the structure of automobile bodies, it is necessary to explore joining methods that can be used efficiently. The present work deals with the optimization of process parameters ...

Design And Simulation Of Gear Manufacturing System Based On Powder Metallurgy Thesis

Dawit Yishak; Balewgize A.zeru; Olu Emmanuel (2019-06)

Our country relies on foreign imported products to satisfy its technological and industrial needs. The associated spare parts of all the imported equipment’s and machineries are also imported. Machineries and related ...

Comparative Study and Optimization of Linear and Non-linear Vehicle Suspension System Thesis

Biniyam Ayele; Johnson Santhosh; Yohanis Dabesa (2019-11)

This thesis presents the comparative study of a quarter car passive suspension model which consists of a two-degree of freedom with a linear and a non-linear suspension component such as: spring, damper and tire. The ...

Experimental Investigation of Mechanical Performance of Hybrid Fiber Reinforced polymer Composites for Structural Application Thesis

Samueal Tadesse; . Anil K; Hanna B. (2019-12)

Natural fibers which are sourced from plant and animals will have a significant role in developing ‘green’ economy. Because it has attractive features of abundant availability, renewable resources, environmentally ...

Dynamic Analysis And Control Simulation Of Half Car Model Active Suspension System Thesis

Sultan Mahamdnur; Riessom W/Giorgis; Abiyou Solomon (2019-07)

All over the world, the number of people killed in road traffic accidents each year is increas ing. And vehicle suspension system defect is one of the factors from a multiple factors that contributed for the incidence of ...

Design And Computational Fluid Dynamics Modeling Of Ultra-Low Head Dual Axis Cross Flowturbine: Wonji-Shoasugar Factory Irrigation Canalflowin Focus Thesis

Surafel Kifle; Balewgize Amare Zeru; Nebiyu Bogale (2019-07)

In Ethiopia, the main source of power supply is large scale hydropower plants, which accounts a total generation of 3,822MW in 2019. However, there are a number of problems associated with power transmission schemes ...

Performance Investigation and Enhancement of Solar Ejector Cooling System (Case study area: Addis Ababa, Ethiopia) Thesis

Mihretab Woldetsadik; Balewgize A. Zeru; Jemal Worku (2019-11)

In this research performance investigation of solar ejector cooling system has been carried out in on-design and off-design operating conditions and enhancement of the ejector is studied. Addis Ababa is taken as a case ...

Numerical Modelling of Fatigue Behaviour for Rail-Wheel Rolling Contact Problem Thesis

Goftila Gudeta; Hirpa Lem; Messay Alemu (2019-07)

The rail wheel fatigue failures are a serious problem that has been facing the international railway industries for more than two centuries. The railway industries have been spending millions of dollars annually for ...

Design, Numerical Modeling and Optimization for Experimental Evaluation of Biogas Burner flame-port in ‘Injera’ Baking Stove Thesis

Yohannes Mulugeta; Venkata Ramayya; Nebiyu Bogale (2019-07-19)

In Ethiopia, 95% of the population relies on the use of traditional biomass for cooking application (IEA, 2015) among which 50% of the energy is used to bake Injera. Due to the low efficiency of injera baking biomass ...

Techno Economic Assessment Of Solar Pv/Wind / Diesel Generator Hybrid Off-Grid Power Systems For Rural Community (A Case Study: Meta Robi District) Thesis

Robera Daba; Venkata Ramayya; Dabala Genati (2018-04)

Electrification to rural areas, those with no electric access or detached from national grid, is one of the most challenging issues in developing countries like Ethiopia. Due to the recent concerns about the global ...

Recycling Organic Solid Wastes By Using Pyrolysis Techniques Of Energy And Biochar Production: The Case Of Khat In Jimma Town. Thesis

Tarekegn Limore; Venkata Ramayya; Getachew Shunki (2017-05)

Biochar is a carbon-rich solid material produced during pyrolysis, which is the thermochemical conversion of biomass in the absence of oxygen. Biochar can be used for soil and compost amendment to increase agronomic ...

Assessment Of Frequent Design-Error Causing Change Order On Building Construction Projects: In Case Of Hawassa City Thesis

Yisihak Mathewos; Bien Maunahan; Abebe Eshetu (2021-04)

The building project phases are a set of complex processes involving many uncertainties. Since the nature of the industries and the uniqueness of projects, and the disintegration of the design and construction process ...

Landfill Site Selection Using Geographical Information System And Remote Sensing Techniques: The Case Of Fiche Town, North Shewa, Oromiya, Ethiopia Thesis

Bezu Abera; Feqadu Fufa; Beekan Gurmessa (2021-07)

Unsafe municipal solid waste disposal is the most difficult problem all over the world. Municipal solid waste has different components. Those responsible for global environmental degradation and health issues as a result ...

Design of Waste Heat Recovery System from Incinerator for Water Heating Application: The Case of Jimma University Referral Hospital. Thesis

Temesgen Duguma; Balewgize A. Zeru; Sewayehu.T (2020-08)

Energy recovery system of hospital waste heat to useful energy units represents a substantial part of the whole technology which enables to utilize heat contained in flue gas (off-gas) from incinerators or combustion ...

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