Mesele Hayelom

• Master of Science
• PhD Student at Norwegian University of Science and Technology

This research experimentally demonstrates the practicability of using large-sized direct solar frying as an alternative technology for the predominantly biomass-based injera baking method. The system was designed and developed with fryers 40, 50, and 55 cm in diameter and two operational options: continuous mode and alternating mode. Extensive expe...

Injera baking poses a significant energy demand and strain on the national grid, requiring temperatures of 180–220 ◦C with traditional clay Mitads. This study aimed to design a solar thermal system to replace electrical baking energy at the Mekelle University student cafeteria. The system, designed for baking 11,000 Injera within a 6-h daily operat...

Background Injera is food consumed daily by Ethiopians like bread and rice in other parts of the world. Biomass stoves are used to bake Injera in most rural households. The unsustainable use of fuelwood causes deforestation. Improved cook stoves such as Mirt (name in local language) were introduced to replace traditional stoves and save fuel wood....

Energy poverty is at its highest risk in Africa and yet introducing clean and modern energy in rural Africa demands huge resource. Most African rural use biomass energy in traditional cook stoves. Similarly, Ethiopia’s rural are using traditional stoves with their associated risks. Injera, the highly consumed food in the country is the most energy...

In Ethiopia, like most developing countries, the majority of households depend on wood and charcoal as their cooking energy resources. This energy has a direct impact on the forest coverage and its emissions have significant health issues. Biogas technology has introduced to address these problems and reduce energy poverty in developing countries....

This paper deals with PHL management of Guava fruit through small-scale juice processing in rural areas that have no access of modern energy. Guava trees cover large areas in Tigray region of Ethiopia, however, during the harvest period the consumption and yield of the fruit is not in balance. Consequently, considerable amount of the fruit spoiled...

In this study, a solar powered indirect food dryer is designed and developed. The dryer design consists of a solar collector unit, drying chamber with two columns of four rack shelves, chimney for the exhaust air, and a solar powered fan. The outlet of the dryer is designed in a truncated pyramid geometry so that precipitation of condensed water wo...

Injera is a staple food particular to Ethiopia and Eritrea. It is one of the most consumed food by most of the 100 million population in the two countries. The conventional Injera baking process is an energy intensive, inefficient and mainly biomass energy based as majority of the population live off-grid. This oil based indirect solar fryer for In...

The Injera baking electrical mitad is the most energy-consuming device in every household in Ethiopia. This research presents a detail engineering study on the energy-consumption performance of existing electrical mitad in Mekelle city. The research work considered thirty-one electrical mitad from different workshops in Mekelle. Depending on the nu...

Injera is a traditional staple pancake and it is part of the daily dish to most of the one hundred million population in Ethiopia and Eritrea. The conventional baking method uses either biomass in rural areas or Electricity in majority of urban areas. A direct solar fryer for Injera baking application is developed as an alternative to the conventio...

This paper deals with the energy audit and heat recovery system modeling and design, taking a cement factory in Ethiopia as a case study. The system is a dry type rotary kiln equipped with a sixth stage cyclone type preheater, pre-calciner and grate cooler. The kiln has a capacity of 3,000 tons/day. The energy auditing has been performed based on t...

A wind pump prototype with 3.6 m rotor diameter, 19 m hub height above ground and 0.22 mm reciprocating pump stroke has been developed at the Department of Mechanical Engineering, Mekelle University. The prototype was designed and manufactured locally. Theoretical model based on combined efficiency of the rotor and the reciprocating pump was used t...

This paper deals with the energy audit and heat recovery system modeling and design, taking a cement factory in Ethiopia as a case study. The system is a dry type rotary kiln equipped with a sixth stage cyclone type preheater, pre-calciner and grate cooler. The kiln has a capacity of 3,000 tons/day. The energy auditing has been performed based on t...

Wind energy potential in Ethiopia is estimated to be enormous due to local peculiar landscape situations. However, the country started to utilize the potential only very recently. One of the reasons for low utilization of wind energy in Ethiopia is the absence of reliable and accurate wind energy resource data. Development of reliable and accurate...

The paper presents economic value of the design and manufacturing of essential oil production plant as a strategy for rural poverty alleviation in rural Ethiopia. The level of technology for small scale essential oil industry is characterized for rural community in Ethiopia. The adaptation of oil distillation technology for essential oil production...