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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 ...

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 ...

Performance Analysis of Gravitational Water Vortex Turbine using OpenFOAM Article

Tesfaye, Amanuel; Ramayya, A. Venkata (2021-10-15)

A Gravitational Water Vortex Turbine is a new development that extracts power from artificially formed water vortex when the water from open flow channel directed tangentially to a round basin and discharges through the ...

Modeling and analysis of flexural strength with fuzzy logic technique for a fused deposition modeling ABS components Article

Mamo, Hana Beyene; Tura, Amanuel Diriba; Santhosh, A. Johnson; Ashok, N.; Rao, Dommeti Kamalakara (2022-02-02)

Fused Deposition Modeling (FDM) is an additive manufacturing technique used for prototype, physical modeling, and end-of-line production. Proper parameter selection is essential for producing high quality items with ...

Finite element analysis, experimental investigation and process parameter optimization of sheet metal bending by line heating method. Article

Muluneh, Dawit; Kumar, Anil (2022-03-02)

The present study concerned with finite element analysis and experimental investigation of sheet metal deforming by line heating method that incorporates the combined effect of traverse speed of the torch, thickness of ...

Design and evaluation of solar parabolic trough collector system integrated with conventional oil boiler Article

TAHA, MUSTEFA JIBRIL; KIBRET, FISEHA BOGALE; RAMAYYA, VENKATA; ZERU, BALEWGIZE AMARE (ARCHIVES OF ELECTRICAL ENGINEERING, 2021-03-17)

In this paper an attempt has been made towards the design and evaluation of a solar parabolic trough collector (PTC) system integrated with a conventional oil boiler (COB) to increase the energy utilization effectiveness ...

Analysis of Solar Irradiance Variation on Heat Flux and Temperature Distribution for a Dish Concentrator Receiver Article

Bekele, Endeshaw Alemu; Ancha, Venkata Ramayya; Binchebo, Tarekegn Limore (ASME Open Journal of Engineering, 2022-03-10)

Concentrated solar power presents immense scope for the deployment of small-scale units focusing on diverse applications, including process heat and rural on/off-grid applications. This paper presents the analysis of ...

Vehicle Dynamics Modeling and Simulation with Control Using Single Track Model Article

Ahmed, Abdussalam Ali; Santhosh, Johnson; Aldbea, Ftema W. (2021-06-12)

One of the most important points to consider when designing and developing vehicles is vehicle dynamics control systems. The most important models that are used in the study of the vehicle control system is called ...

A Review on Natural Fibre-Reinforced Biopolymer Composites: Properties and Applications Article

Prakash, S. Om; Sahu, Parul; Madhan, Mohankumar; Santhosh, A. Johnson (International Journal of Polymer Science, 2022-01-15)

In ongoing decades, material researchers and scientists are giving more consideration towards the improvement of biobased polymer composites as various employments of items arranged by natural fibres and petrochemical ...

Experimental, Numerical Analysis and Parametric Optimization of Press-Brake Bending Process of Perforated Aluminium Alloy (AA Thesis

Ahmed Jemal; Besufekad Negash; Ahmed Mohammed (2020-10)

Spring-back is one of the problems in the press-brake v-bending process due to the elastic recovery of the material. It can be influenced by various technological, geometrical, and material parameters. In this thesis, ...

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 ...

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 ...

Biogas Production by Anaerobic Co-Digestion of Cactus Cladodes with Cow Dung and Goat Manure Thesis

Melore, Mathewos; Ramaya, Venkata; Kifle, Fikadu (2020-07-26)

Production of biogas through anaerobic digestion of organic waste materials provides an alternative environmentally friendly renewable energy. In this study, biogas production from co-digestion of cladodes of Opuntia ...

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