Research Article
Exergy and Economic Analysis of Modified Mixed Mode SolarInjeraDryer
@INPROCEEDINGS{10.1007/978-3-030-93712-6_30, author={Senay Teshome Sileshi and Abdulkadir Aman Hassen and Kamil Dino Adem}, title={Exergy and Economic Analysis of Modified Mixed Mode SolarInjeraDryer}, proceedings={Advances of Science and Technology. 9th EAI International Conference, ICAST 2021, Hybrid Event, Bahir Dar, Ethiopia, August 27--29, 2021, Proceedings, Part II}, proceedings_a={ICAST PART 2}, year={2022}, month={1}, keywords={Mixed mode dryer Injera drying Exergy analysis Economic analysis Embodied energy}, doi={10.1007/978-3-030-93712-6_30} }- Senay Teshome Sileshi
Abdulkadir Aman Hassen
Kamil Dino Adem
Year: 2022
Exergy and Economic Analysis of Modified Mixed Mode SolarInjeraDryer
ICAST PART 2
Springer
DOI: 10.1007/978-3-030-93712-6_30
Abstract
In Ethiopiainjerais consumed by most of the population. However, the application of solar dryers in dryinginjerais not a common practice. The aim of this study is to evaluate the performance of a modified mixed mode solarinjeradryer which integrates a vertical air distribution channel using energy and exergy analysis and to determine the economic significance. The overall drying efficiency of the modified dryer in dryinginjerawas found to be 10% and it takes around 4 h to reduce the moisture content to 0.14 g water/g solids. In dryinginjera, an even temperature distribution of drying air was observed over the drying trays with 2 ℃ temperature difference. The embodied energy of the modified dryer was obtained to be 765.46 kWh. The overall exergy efficiency of the modified dryer was found to be 13.2% and the result indicated that the exergy efficiency has an inverse relation with exergy loss. The exergy losses of the bottom and top trays were found to have very similar values and the exergy losses were observed to have monotonic relation with exergy inflow and an inverse relation with moisture content. From the economic analysis the saving per day of the modified dryer turns out to be 111.48 ETB/day and the cumulative present worth of the annual savings by using the modified dryer was found as 154,459 ETB with payback period of 104 drying days. This solarinjeradryer will be a cost-effective choice for mass producers of driedinjera.
