Design Modelling And Simulation Of Injera Baking Steam Oven By Using Biogas Boiler For Small Scale Industry

Abstract

Energy is one of the basic things needed to satisfy basic human needs. The main energy source of developing countries for cooking comes from biomass. Like most developing countries, Ethiopia is also dependent on using traditional fuels. The conventional injera baking method of using open three tone baking stove has a lot of limitations such as much energy consumption house and environmental pollution, deforestation, lung, skin and eye attacks due smoke etc. The second alternative energy that currently used is electricity. The cost of electric energies is increase year to year because of world cost inflation. This paper proposes the design and implementation of a steam energy-powered injera baking oven. The oven utilizes steam generated from a steam boiler or similar heat source to cook injera. The design incorporates elements such a steam generator, temperature control mechanisms, steam injection system, baking surface, ventilation, safety features, and monitoring systems. By harnessing steam energy, the oven offers a sustainable and efficient solution for baking injera, with potential applications in both domestic and commercial settings. The objective of this study was the analytical calculation, CAD modeling and simulation of the heat transfer during the process of injera baking. The design parameters are, capacities of boiler (proposed for five ovens which can bake 600 injeras within 6 hours), geometry of baking pan (diameter 60 cm and thickness 1 cm). The required energy power is 1980kW. The capacity may be depending on the specific requirements of the target users and market demand. Injera baking machine is powered by steam energy. The temperature of steam is equivalent to in the range 180-230oC. The component design and the assembly have been done by Solidworks, AutoCAD. The components are Lamont boiler and baking ovens. This oven is highly recommended to save energy, totally avoid individual energy bill per month and minimize operation costs of hotels and restaurants. Therefore, this injera baking oven saves labor, energy and it is hygienic