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Effect of thermal shock on the grates of improved charcoal cook-stoves made from different materials
Energy for Sustainable Development ( IF 5.5 ) Pub Date : 2021-08-14 , DOI: 10.1016/j.esd.2021.07.004
Peter Tumutegyereize 1 , Simon Muwanguzi 1 , Fildah Ayaa 1 , Simon Kizito 2 , Joshua Wanyama 1
Affiliation  

From the current literature on cook stoves, it remains unclear on which is the best temper and the alternative soils that can be used in the production of charcoal cook-stoves that are resistant to thermal shock. To this end, a study was conducted to determine which soil type and mixing ratio that can produce the highest thermal shock resistance when used as grates. The grates made of clay, red and anthill soils each mixed with shale rock in ratios of 1:0; 1:1; and 3:1 were compared. The grates were fired and then heated in a furnace set at 400 °C for 1 h and subjected to two cooling treatments; rapid cooling by quenching in water and cooling at ambient temperatures, for seven subsequent cycles after being heated. The shock resistance for all the grates made from different soil types and different mix ratios was measured based on crack initiation and propagation according to ASTM C1525-04 standards. The results showed that clay soil mixed with shale rock in the ratio of 3:1 had the highest thermal shock resistance with no crack initiation throughout the heating and cooling cycles, followed by anthill soil mixed with shale rock in the ratio of 1:1. Therefore, charcoal stove users and manufacturers can expect a better quality product with high durability if shale rock is used to temper the cook-stoves in comparison to burnt bricks that are currently commonly used in Uganda. The method used in this work can be applied in other regions to come up with more material ratios that are resistant to thermal shock.



中文翻译:

热冲击对不同材质改良木炭炉排炉排的影响

从目前关于炉灶的文献来看,尚不清楚哪种最佳回火和可用于生产抗热冲击的木炭炉灶的替代土壤。为此,进行了一项研究,以确定当用作炉排时,哪种土壤类型和混合比例可以产生最高的抗热震性。由粘土、红土和蚁丘土以1:0的比例与页岩混合而成的篦;1:1; 和 3:1 进行了比较。将炉排烧制,然后在设定为 400°C 的炉中加热 1 小时,并进行两次冷却处理;通过在水中淬火和在环境温度下冷却的快速冷却,加热后连续七个循环。根据 ASTM C1525-04 标准,基于裂纹萌生和扩展来测量由不同土壤类型和不同混合比制成的所有格栅的抗冲击性。结果表明,粘土与页岩以 3:1 的比例混合时抗热震性最高,在整个加热和冷却循环过程中均未产生裂纹,其次是蚁丘土与页岩以 1:1 的比例混合。因此,与乌干达目前常用的烧砖相比,如果使用页岩岩对炉灶进行回火,木炭炉用户和制造商可以期待质量更好、耐用性更高的产品。这项工作中使用的方法可以应用于其他地区,以提出更多抗热冲击的材料比例。结果表明,粘土与页岩以 3:1 的比例混合时抗热震性最高,在整个加热和冷却循环过程中均未产生裂纹,其次是蚁丘土与页岩以 1:1 的比例混合。因此,与乌干达目前常用的烧砖相比,如果使用页岩岩对炉灶进行回火,木炭炉用户和制造商可以期待质量更好、耐用性更高的产品。这项工作中使用的方法可以应用于其他地区,以提出更多抗热冲击的材料比例。结果表明,粘土与页岩以 3:1 的比例混合时抗热震性最高,在整个加热和冷却循环过程中均未产生裂纹,其次是蚁丘土与页岩以 1:1 的比例混合。因此,与乌干达目前常用的烧砖相比,如果使用页岩岩对炉灶进行回火,木炭炉用户和制造商可以期待质量更好、耐用性更高的产品。这项工作中使用的方法可以应用于其他地区,以提出更多抗热冲击的材料比例。其次是蚁丘土与页岩以1:1的比例混合。因此,与乌干达目前常用的烧砖相比,如果使用页岩岩对炉灶进行回火,木炭炉用户和制造商可以期待质量更好、耐用性更高的产品。这项工作中使用的方法可以应用于其他地区,以提出更多抗热冲击的材料比例。其次是蚁丘土与页岩以1:1的比例混合。因此,与乌干达目前常用的烧砖相比,如果使用页岩岩对炉灶进行回火,木炭炉用户和制造商可以期待质量更好、耐用性更高的产品。这项工作中使用的方法可以应用于其他地区,以提出更多抗热冲击的材料比例。

更新日期:2021-08-15
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