Performance, combustion and emission characteristics of a diesel engine fuelled with Schizochytrium micro-algae biodiesel and its blends

Reddy, B. Rajendra Prasad; Reddy, N. Rana Prathap; Manne, Bhaskar; Srikanth, H. V.

doi:10.1080/01430750.2020.1720808

Cited by 23 publications

(6 citation statements)

References 29 publications

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“…A study found that when microalgae were used as a partial replacement for diesel fuel, the BTE was practically identical with that of a regular diesel fuel at full load. Furthermore, nitrous oxide emissions decreased substantially with fewer hydrocarbon and carbon dioxide emissions . The combustion behavior of microalgae-based biodiesel in a CI engine was investigated, and the outcomes of that study were that biodiesel blends decreased ignition delay, enhanced peak cylinder pressure (CP), and mean gas temperature when mixed up to 40% with diesel.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, nitrous oxide emissions decreased substantially with fewer hydrocarbon and carbon dioxide emissions. 20 The combustion behavior of microalgae-based biodiesel in a CI engine was investigated, and the outcomes of that study were that biodiesel blends decreased ignition delay, enhanced peak cylinder pressure (CP), and mean gas temperature when mixed up to 40% with diesel. They suggested using microalgae-based biodiesel in the IC engine.…”

Section: Introductionmentioning

confidence: 99%

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Multicriteria Decision-Making Technique for Choosing the Optimal Ammonia Energy Share in an Ammonia–Biodiesel-Fueled Reactivity-Controlled Compression Ignition Engine

Ramachandran,

Krishnaiah,

Vellore Gangadharan

et al. 2024

ACS Omega

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Low-temperature combustion paired with the use of carbon-free ammonia and carbon-neutral biofuels is a novel approach for improving performance, reducing greenhouse gases, and reducing regulated emissions. Reactivity-controlled compression ignition (RCCI), a low-temperature combustion technology, dramatically reduces NOx and smoke emissions compared to traditional engines. Ammonia can be projected as a good transit fuel in the journey toward achieving net zero emissions and cleaner energy. This study examines the impact of ammonia energy premixing fraction (AEPF) (20, 30, 40, and 50%) as a lowreactive fuel (LRF) and algal biodiesel as a high-reactive fuel on the performance and emission characteristics of a single-cylinder, water-cooled 3.5 kW CI engine at a constant speed of 1500 rpm under various loading conditions. The research results indicate that the 40% ammonia share RCCI mode exhibited a reduction in carbon dioxide (CO 2 ) by 14.16%, nitrogen oxide (NOx) by 22.6%, and smoke by 42.1%, with an 11.5% improvement in thermal efficiency compared to the neat biodiesel-fueled conventional engine. Furthermore, the analytical hierarchy process (AHP) will be used in conjunction with the technique for order of preference by similarity to ideal solution (TOPSIS) of multiple criteria decision-making techniques to determine the optimal energy share in the RCCI combustion with the goal of achieving superior thermal efficiency and lower emissions. According to the AHP-TOPSIS study findings, AEPF40 is the best choice for all engine loads.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multicriteria Decision-Making Technique for Choosing the Optimal Ammonia Energy Share in an Ammonia–Biodiesel-Fueled Reactivity-Controlled Compression Ignition Engine

Ramachandran,

Krishnaiah,

Vellore Gangadharan

et al. 2024

ACS Omega

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“…Microalgal biodiesel is a fuel that significantly lowers NO x emissions by between 47 and 70% while still producing some particulate matter and smoke in CI engines. 13 Reddy et al 14 experimentally studied microalgal biodiesel as a potential partial diesel fuel replacement in CI engines, and it was discovered that the BTE remained quite similar to that of diesel and HC and CO emissions were mitigated than diesel, with higher NO x emissions leaving scope for further improvement.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation for Determining an Ideal Algal Biodiesel–Diesel Blend to Improve the Performance and Mitigate Emissions Using a Response Surface Methodology

et al. 2023

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The ongoing depletion of the world’s fossil fuel sources and environmental damage has compelled the quest for alternative energy. Excellent characteristics of biodiesel include its renewable nature, safety, absence of sulfur, environmental advantages, and biodegradability, which can eradicate the above problems. In this study, algal oil was characterized to obtain the fatty acid profile, and the free fatty acid value of algal oil suggested a two-step process of esterification and transesterification for efficient biodiesel production. The performance and emission results of biodiesel and its blends (B10, B20, and B30) were investigated in a constant speed, single-cylinder, 4-stroke, 3.5 kW compression ignition engine at different loads for arriving at an appropriate fuel blend ratio. The response surface methodology technique is used to predict the ideal composition of microalgae–diesel using the experimental data with due weightage for the optimization criterion. The predicted blend ratio of B25 was tested on the engine and authenticated. The findings recorded an improvement in brake thermal efficiency to 31.42% and reduction in brake specific energy consumption to 9.82 MJ/kW h, unburned hydrocarbon to 85 ppm, carbon monoxide to 0.164% v/v, carbon dioxide to 4.115% v/v, nitrogen oxides to 691 ppm, and smoke opacity to 16.93%.

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“…Additionally, it emits more NOx, less HC and, CO 2 than diesel. 45 Therefore, biodiesel seems to have a high potential for supplanting fossil fuels whilst also emitting fewer emissions than diesel. It benefits CI engines, but still increases the NOx emissions.…”

Section: Introductionmentioning

confidence: 99%

Optimization of ideal engine parameters to adopt ammonia and algae biodiesel for reactivity controlled compression ignition engine using response surface methodology

Elumalai,

Ravi

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Renewable and green fuels like carbon-free ammonia and carbon neutral algal-biodiesel appear to be more promising alternatives. Reactivity controlled compression ignition offers a viable alternative to classical combustion. In current delving, compression ratio, injection timing and premixing ratio are established by investigating the combustion, performance, and emission parameters of reactivity-controlled compression ignition operation fueled with ammonia and algae biodiesel as low reactive and high reactive fuel. Primarily, different compression ratio (16, 17, and 18) for different ammonia energy premixing fractions (20%, 30%, 40%, and 50%) at 80% load with standard injection time (24° before top dead center) was evaluated to identify the ideal compression ratio. Next stage, different Injection timing (24°, 26°, and 28° before top dead center) was examined with that ideal compression ratio at 80% load utilizing combustion attributes. Finally, with the ideal compression ratio and injection timing (18° and 26°), the performance and emission for various ammonia energy premixing fractions (20%, 30%, 40%, and 50%) on the entire load ranges (20%, 40%, 60%, 80%, and 100%) were investigated and the optimal fuel fraction was arrived by multi objective optimization technique in response surface methodology by considering response weights. The multi objective optimization result enhances the 43% ammonia premixing combustion. The experimental validation of 43% ammonia premixing combustion achieved the best brake thermal efficiency of 34.02% whereas fuel consumption is 12.72 MJ/kWh. The maximum emission rate of hydrocarbon, carbon monoxide, carbon dioxide, oxides of nitrogen and smoke opacity is 47 ppm, 0.084% volume, 2.04% volume 593 ppm and 15.9%. In comparison to the Conventional biodiesel combustion, an increase in efficiency of 3.34% and a decrease in energy consumption of 3.72% are achieved for the 43% ammonia energy premixing combustion. Similarly, emissions were reduced by 45.35%, 44%, 46.25%, 23.44%, and 28.38% respectively than conventional biodiesel combustion.

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Performance, combustion and emission characteristics of a diesel engine fuelled with Schizochytrium micro-algae biodiesel and its blends

Cited by 23 publications

References 29 publications

Multicriteria Decision-Making Technique for Choosing the Optimal Ammonia Energy Share in an Ammonia–Biodiesel-Fueled Reactivity-Controlled Compression Ignition Engine

Multicriteria Decision-Making Technique for Choosing the Optimal Ammonia Energy Share in an Ammonia–Biodiesel-Fueled Reactivity-Controlled Compression Ignition Engine

Experimental Investigation for Determining an Ideal Algal Biodiesel–Diesel Blend to Improve the Performance and Mitigate Emissions Using a Response Surface Methodology

Optimization of ideal engine parameters to adopt ammonia and algae biodiesel for reactivity controlled compression ignition engine using response surface methodology

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