Estrada-Diaz Luis, Hernández-Comas Brando, Bula-Silvera Antonio, Gonzalez-Quiroga Arturo, Duarte-Forero Jorge
KAI Research Unit, Department of Mechanical Engineering, Universidad del Atlántico, Carrera 30 Número 8-49, Puerto Colombia, Barranquilla, Colombia.
Energy Department, Universidad de la Costa, Cl. 58 #55-66, 080002, Barranquilla, Colombia.
Heliyon. 2024 Aug 6;10(16):e35820. doi: 10.1016/j.heliyon.2024.e35820. eCollection 2024 Aug 30.
As the world moves away from fossil fuels and embraces sustainable energy sources, the need for sustainable fuels for transportation becomes paramount. This study investigates the effects of pyrolysis oil derived from cassava peel waste (CPO), hydrogen (H), and diesel (D) blends as a partial substitute for low-displacement compression ignition engines. We tested three blends - CPO25, CPO25H5, and CPO25H10 - against neat diesel operation at engine speeds of 3400 rpm, 3600 rpm, and 3800 rpm and torques of 4 Nm, 6 Nm, and 8 Nm. Our findings reveal that while energy efficiency decreased with CPO25 compared to D100 operation, adding H increased energy efficiency. The highest increase was 7.8 % for CPO25H5 and 16 % for CPO25H10 compared to CPO25. Exergy efficiency also decreased with CPO25 compared to D100, but adding H compensated for this reduction. The highest increase was 8.0 % for CPO25H5 and 17 % for CPO25H10 compared to D100. CPO25H10 showed an increase of 8.1 % in combustion pressure and 9.9 % in heat release rate compared to CPO25. Emissions analysis also revealed that CO emissions were considerably lower with CPO and H than with D100, with the highest decrease of 11 % with CPO25H10. CO and hydrocarbon emissions followed the same trend as CO. Although NOx emissions slightly increased, the benefits of using pyrolysis oil-H-diesel blends as a partial substitution fuel for low-displacement compression ignition engines are evident.
随着世界逐步摆脱化石燃料并采用可持续能源，对可持续运输燃料的需求变得至关重要。本研究调查了源自木薯皮废料的热解油（CPO）、氢气（H）和柴油（D）混合物作为低排量压缩点火发动机的部分替代品的效果。我们在发动机转速为3400转/分钟、3600转/分钟和3800转/分钟以及扭矩为4牛米、6牛米和8牛米的条件下，对三种混合物——CPO25、CPO25H5和CPO25H10——与纯柴油运行进行了测试。我们的研究结果表明，与D100运行相比，CPO25运行时能源效率降低，但添加H可提高能源效率。与CPO25相比，CPO25H5的最高增幅为7.8%，CPO25H10的最高增幅为16%。与D100相比，CPO25的（火用）效率也有所降低，但添加H弥补了这一降低。与D100相比，CPO25H5的最高增幅为8.0%，CPO25H10的最高增幅为17%。与CPO25相比，CPO25H10的燃烧压力增加了8.1%，热释放率增加了9.9%。排放分析还表明，CPO和H的一氧化碳排放量比D100低得多，CPO25H10的最高降幅为11%。一氧化碳和碳氢化合物排放与一氧化碳遵循相同趋势。尽管氮氧化物排放量略有增加，但使用热解油 - H - 柴油混合物作为低排量压缩点火发动机的部分替代燃料的好处是显而易见的。
