Exergy and Energy Analysis of Combustion of Blended Levels of Biodiesel, Ethanol and Diesel Fuel in a DI Diesel Engine

Khoobbakht, Golmohammad; Akram, Asadollah; Karimi, Mohammad; Najafi, G.

doi:10.1016/j.applthermaleng.2016.01.022

Cited by 92 publications

(32 citation statements)

References 20 publications

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“…The intensive exploitation of a renewable energy source may also cause a destruction of exergy through excessive wastes due to insufficient materials recycling. Some work and non‐renewable resources are needed to treat these wastes in order to reduce or prevent environmental damage …”

Section: Introductionmentioning

confidence: 99%

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Multi‐objective optimization of transesterification in biodiesel production catalyzed by immobilized lipase

Karimi

Jenkins

Stroeve

2016

Biofuels Bioprod Bioref

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In order to comply with criteria of green energy concepts and sustainability, a multi-objective analysis was performed for the transesterification of waste cooking oil (WCO) using immobilized lipase. Response surface methodology and artificial neural networks, followed by multiple response optimization through a desirability function approach were applied to individually and simultaneously evaluate the fatty acid methyl esters (FAME) content and the exergy effi ciency. Reaction time and concentrations of methanol, immobilized lipase and water were considered as the design variables in maximizing FAME content and exergy effi ciency. The maximum individual desirability of FAME content was predicted to be 95.7% corresponding to a methanol to WCO molar ratio of 6.7, catalyst concentration of 45%, water content of 9% and reaction time of 25 h. However, based on the simultaneously optimization of both the FAME content and the exergy effi ciency, the maximum overall desirability was found at a methanol to WCO molar ratio of 6.7, catalyst concentration of 35%, water content of 12% and reaction time of 20 h to achieve FAME content of 88.6% and exergy effi ciency of 80.1%, respectively.

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Section: Introductionmentioning

confidence: 99%

“…Some work and non-renewable resources are needed to treat these wastes in order to reduce or prevent environmental damage. 13,14 Most real processes need to be optimized with respect to several criteria simultaneously. Frequently, design or operating conditions are constrained for meeting product specifi cations.…”

Section: Introductionmentioning

confidence: 99%

Multi‐objective optimization of transesterification in biodiesel production catalyzed by immobilized lipase

Karimi

Jenkins

Stroeve

2016

Biofuels Bioprod Bioref

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“…In a related research, the blends of diesel, biodiesel, and ethanol were considered in a DI diesel engine exergetically. 17 The exergy efficiency decline with addition of biodiesel and bioethanol, while it raise with engine speed and load. Kul and Kahraman 18 investigated energy and exergy aspect of diesel engine fueled with biodiesel, bioethanol, and diesel.…”

Section: Exergy Analysis Of the Baseline And Optimized Engine Charactmentioning

confidence: 99%

“…The irreversibility of biodiesel combustion can be reduced as much as 10.34% compared to pure diesel. In a related research, the blends of diesel, biodiesel, and ethanol were considered in a DI diesel engine exergetically . The exergy efficiency decline with addition of biodiesel and bioethanol, while it raise with engine speed and load.…”

Section: Introductionmentioning

confidence: 99%

Optimization of a DI diesel engine to reduce emission and boost power by exergy and NLPQL method

Taghavifar

Anvari

2019

Env Prog and Sustain Energy

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The design and manufacture of efficient diesel engines, which can convert the majority of fuel combustion into a mechanical rotation movement is still growing. Simultaneous investigation of optimum engine configuration and the second law of thermodynamics consideration can best achieve this goal. A baseline 1.8 Ford diesel engine is simulated via AVL Fire software and then the multiobjective nonlinear programming by quadratic Lagrangian method have been applied to find the global optimal design. Then for exergy analysis of the baseline and optimized engine characteristics, a FORTRAN developed code is used. Two basic optimization cases are detected for exergy assessment that are RunID41 (feasible design) and RunID35 (infeasible design) among 55 run points. It was determined that the optimum feasible solution should characterize with low inner wall diameter (Di) with wider half spray cone angle to avoid wall collision in order to stay in the constraint zone and feasible area. The results of exergy also indicates that RunID41 is fuel efficient since the fuel burnt exergy of three design of ID41, ID35, and baseline are 719.52, 694.77, and 643.07 J, respectively. It has also been pointed out that the feasible optimum gives the higher thermo‐mechanical exergy, work exergy, and total exergy, while the infeasible optimum yields a higher heat release rate exergy and chemical exergy as there are no restrictions of injection and combustion chamber geometry set by the designer.

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“…In this regard first and second law analysis of thermodynamics is good techniques for evaluation of efficient and effective usage of fuels (Khoobbakht, Akram, Karimi & Najafi, 2016). At a given state, exergy of a system (availability) can be explained as the maximum extractable power from the system when it reaches thermal, mechanical and chemical equilibrium with its surrounding while performing a reversible process.…”

Section: Introductionmentioning

confidence: 99%

Performance, Emission and Efficiency Analysis of a Diesel Engine Operated With Diesel and Diesel-Ethanol (E20) Blend

Özgür

Tosun

Özgür

et al. 2017

mijst

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Exergy and Energy Analysis of Combustion of Blended Levels of Biodiesel, Ethanol and Diesel Fuel in a DI Diesel Engine

Cited by 92 publications

References 20 publications

Multi‐objective optimization of transesterification in biodiesel production catalyzed by immobilized lipase

Multi‐objective optimization of transesterification in biodiesel production catalyzed by immobilized lipase

Optimization of a DI diesel engine to reduce emission and boost power by exergy and NLPQL method

Performance, Emission and Efficiency Analysis of a Diesel Engine Operated With Diesel and Diesel-Ethanol (E20) Blend

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