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An experimental study on energy-exergy analysis and sustainability index in a diesel engine with direct injection diesel-biodiesel-butanol fuel blends
Scopus
Toplam 148 atıf DOI
The aim of this study was to investigate the effects of biodiesel and butanol properties on energetic-exergetic efficiencies of the engine performance and assessment of sustainability. In this study, energy and exergy analyses were performed in a direct-injected (DI) diesel engine operating with various diesel-biodiesel-butanol fuel blends. The experiments were conducted with a single-cylinder, naturally aspirated, water-cooled, a DI diesel engine at the maximum torque (1400 rpm) and power (2800 rpm) condition. According to obtained results, it was found that biodiesel energetic-exergetic efficiencies and sustainability index (SI) of biodiesel were higher than euro diesel. The maximum energy-exergy efficiencies and SI of the diesel engine were 32.49%, 30.25%, and 1.434, respectively and were obtained using B100 fuel at 1400 rpm. However, low butanol ratio blends had considerably similar energetic-exergetic performance and SI trends compared to euro diesel, while these values decreased by increasing the butanol ratio. Thus, D75B20But5 can be accepted as fuel that has the best fuel ratio according to the performance of the energy-exergy and SI. It could be concluded that the properties of the biodiesel and butanol have substantially affected the energy-exergy analysis and SI value of a direct-injected diesel engine.
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Atıf Yapan Yayın
Effect of intake valve lift and binary alcohol (bioethanol+isobutanol) addition on energy, exergy, sustainability, greenhouse gas impact and cost analysis in a hydrogen/diesel dual fuel engines
Scopus
Havuzumuzda 20 atıf almış
Greenhouse gas emissions are a significant problem contributing to global warming and climate change and it is essential to increase the use of renewable and biomass-derived fuels in internal combustion engines to reduce greenhouse gas formation. Alcohol fuels and hydrogen have become prominent in recent years due to less harmful emission levels as a result of combustion. While there are very few studies in the literature on ternary mixture + hydrogen in terms of energy and exergy, there is a gap on the effect of the valve lift amount. The aim of this study is to investigate the effects of binary alcohol addition and variable intake valve lift (IVL) in hydrogen-diesel dual fuel mode on energy, exergy, sustainability, and greenhouse gas emissions. The experiments are conducted at variable torque conditions, involving three different IVL values (4, 4.46, and 4.9 mm) and four different fuel combinations (diesel, diesel + H2, diesel + binary alcohol, and diesel + binary alcohol + H2). The binary alcohol addition consists of 10% bioethanol and 10% isobutanol volumetrically, while in the dual-fuel mode, hydrogen is injected into the cylinder at a constant flow rate. When the results are examined, the highest energy and exergy values are obtained with the IVL-Diesel + H2 operation, providing on average 11% and 8% higher exergy efficiency compared to IVL 4-Diesel and IVL 4.46-Diesel studies, respectively. Additionally, the exergy destruction in the IVL-Diesel + H2 study shows an average decrease of 16% and 12%, respectively, compared to the IVL 4-Diesel and IVL 4.46-Diesel studies. Additionally, significant reductions in emissions are achieved. In the IVL 4.9-EB20+H2 study, HC, CO, and CO2 emissions decrease by 28%, 40%, and 28%, respectively, compared to the IVL 4.0 study. When examining the GHG emission impact, it is analysed that operating a single-cylinder engine with EB20+H2 fuels under 4.9 mm IVL conditions emits, on average, 36% and 32% less GHG impact over a one-year period compared to IVL 4-Diesel and IVL 4.46-Diesel studies, respectively.
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Kurumlar (1)
Selçuk Üniversitesi
Selçuklu, Turkey