Hailu Arkbom
Sustainable Energy Center of Excellence, Addis Ababa Science and Technology University, P.O. Box 16417, Addis Ababa, Ethiopia.
Nuclear Technology Center of Excellence, Addis Ababa Science and Technology University, P.O. Box 16417, Addis Ababa, Ethiopia.
Heliyon. 2022 Aug 11;8(8):e10163. doi: 10.1016/j.heliyon.2022.e10163. eCollection 2022 Aug.
The performance of an Ethiopian-designed and built-in gasifier stove was studied and evaluated. The water boiling test (WBT) findings are reported. This test was conducted in a controlled setting utilizing eucalyptus, bamboo, and sawdust-cow dung briquettes as test feedstocks, in accordance with WBT's 4.2.3 standard process and test manuals. Based on moisture content, the net calorific values of eucalyptus, bamboo, and sawdust-cow dung briquettes were calculated and determined to be 15.77 MJ/kg, 14.70 MJ/kg, and 15.35 MJ/kg, respectively. The efficiency of this stove was calculated utilizing those three feedstocks. As a result, the gasifier stove's efficiency having eucalyptus, sawdust-cow dung briquette, and bamboo as feedstock were 32.30 ± 0.3%, 31.5 ± 0.5%, and 26.25 ± 0.25%, respectively. This proportion did not include the ultimate charcoal production, but when this yield was employed as an energy input for additional charcoal burners, it increased to 53 ± 2%. The relationship between gasifier stove charcoal production and total efficiency is negatively related, with a linear equation of Y = - 0.7956X+ 22.766 and an R-squared value of 0.92. When compared to local stoves and foreign gasifier stoves, whose efficiency is in the range of 10 %-39% this efficiency rating was exceptional due to the fact that space between the internal and external cylinder help the secondary air to preheat before combustion and also the interior hallow cylinder help the primary air to move evenly in the vertical circular pattern for proper gasification, it will also help the gases that are produced during gasification process to move to the top part for combustion, indicating that this study can be fostered for prospective use.
对一款埃塞俄比亚设计并制造的气化炉进行了性能研究与评估。报告了水煮沸试验（WBT）的结果。该试验是在可控环境下进行的，按照WBT的4.2.3标准流程和试验手册，使用桉树、竹子以及锯末 - 牛粪煤球作为试验原料。根据水分含量，计算得出桉树、竹子和锯末 - 牛粪煤球的净热值分别为15.77兆焦/千克、14.70兆焦/千克和15.35兆焦/千克。利用这三种原料计算了该炉灶的效率。结果，以桉树、锯末 - 牛粪煤球和竹子为原料的气化炉效率分别为32.30±0.3%、31.5±0.5%和26.25±0.25%。该比例不包括最终的木炭产量，但当此产量用作额外木炭燃烧器的能量输入时，效率提高到53±2%。气化炉木炭产量与总效率之间呈负相关，线性方程为Y = - 0.7956X + 22.766，决定系数R²值为0.92。与效率在10%-39%范围内的当地炉灶和国外气化炉相比，该效率评级非常出色，这是因为内外筒之间的空间有助于二次空气在燃烧前预热，并且内部空心筒有助于一次空气以垂直圆形模式均匀流动以实现适当气化，它还将有助于气化过程中产生的气体移动到顶部进行燃烧，表明该研究可用于未来的应用。
