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Biomass energy conversion in a gasifier for injera baking mitad application
Tayachew Nega1, Nigus Gabbiye Habtu2, Assefa Tesfaye3
1Department of Mechanical Engineering, University of Gondar, Institute of Technology, 196, Gondar, Ethiopia.
Heliyon
|December 29, 2022
Summary
This study optimized gasification for Injera baking by adjusting airflow and preheating air, improving fuel efficiency and reducing baking time. The new gasifier design achieved effective baking temperatures with reduced wood fuel consumption.
Area of Science:
- Biomass Energy Conversion
- Sustainable Cooking Technologies
- Food Science and Engineering
Background:
- Injera baking traditionally relies on inefficient fuel sources.
- Biomass gasification offers a cleaner alternative for cooking applications.
- Optimizing gasifier performance is crucial for efficient and sustainable food preparation.
Purpose of the Study:
- To evaluate gasification performance for Injera baking.
- To investigate the impact of moisture content and airflow rates on gasifier efficiency.
- To enhance temperature distribution and uniformity on the baking surface (mitad).
Main Methods:
- Conducted gasification experiments with varying primary and secondary airflow rates.
- Modified the reactor cone diameter to influence temperature distribution.
- Tested pre-heated primary air and adjusted air-fuel ratios.
- Measured gasifier temperatures, baking surface temperatures, fuel consumption, and baking time.
Main Results:
- Pre-heating primary air and optimizing air-fuel ratio improved gasification efficiency.
- Reduced cone diameter enhanced central temperature but increased variability.
- Effective Injera baking temperatures (170-185°C) were achieved between 650-800°C gasification temperatures.
- The optimized gasifier demonstrated fuel efficiency of 0.45 and time savings of 0.12.
Conclusions:
- Pre-heated air is more efficient and cost-effective for gasification and Injera baking.
- Gasifier performance, including fuel consumption and burning rate, is significantly influenced by airflow rates.
- The modified gasifier design shows promise for sustainable and efficient Injera production.
