Power and Efficiency Analysis of Diesel Cycle Under Alternative Criteria

Atmaca, Mustafa; Gümüş, Metin

doi:10.1007/s13369-013-0773-0

Cited by 13 publications

(6 citation statements)

References 28 publications

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“…Atmaca and Gumus [146] investigated and compared the performances under the MP, MEP and MPD conditions of reversible Diesel cycles and found that design parameters under MEP conditions were better that those under MP and MPD conditions. Considering HTL, Klein [74] obtained the work output versus CR characteristics, investigated the influence of HTL on cycle performance, compared the optimum CR and efficiency at the MW of an endoreversible Diesel cycle with those of an endoreversible Otto cycle, and found that the CR at the MW of the endoreversible Diesel cycle was higher than that of the endoreversible Otto cycle, while the efficiencies at the MW of the two cycles were equal.…”

Section: The Progress In Optimum Performance Studies For As Diesel Cyclementioning

confidence: 99%

Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles

Chen

Sun

2016

Entropy

139

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Abstract:On the basis of introducing the origin and development of finite time thermodynamics (FTT), this paper reviews the progress in FTT optimization for internal combustion engine (ICE) cycles from the following four aspects: the studies on the optimum performances of air standard endoreversible (with only the irreversibility of heat resistance) and irreversible ICE cycles, including Otto, Diesel, Atkinson, Brayton, Dual, Miller, Porous Medium and Universal cycles with constant specific heats, variable specific heats, and variable specific ratio of the conventional and quantum working fluids (WFs); the studies on the optimum piston motion (OPM) trajectories of ICE cycles, including Otto and Diesel cycles with Newtonian and other heat transfer laws; the studies on the performance limits of ICE cycles with non-uniform WF with Newtonian and other heat transfer laws; as well as the studies on the performance simulation of ICE cycles. In the studies, the optimization objectives include work, power, power density, efficiency, entropy generation rate, ecological function, and so on. The further direction for the studies is explored.

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Section: The Progress In Optimum Performance Studies For As Diesel Cyclementioning

confidence: 99%

Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles

Chen

Sun

2016

Entropy

139

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“…For this purpose, Sahin et al [13] has proposed the power density criteria addressing the system dimensions and performance within the constraints of the first law of thermodynamics and defined as the ratio of the power generated to the maximum volume in a Brayton cycle. However, optimization indicative of the maximization of this function have been performed for such power cycles as the Carnot [14][15][16], Brayton [17][18][19][20][21], dual [22,23], Atkinson [24,25], and diesel [26] systems in recent years. Studies have investigated the effects design and irreversibility parameters have on performance criteria.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2022

Sigma J Eng Nat Sci - Sigma Müh Fen Bil Derg

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Oxy-combustion technologies are green energy systems and an impressive solution to climate change and global warming. This study presents a detailed exergy analysis obtained for oxy-combustion power systems in comparison with a conventional gas turbine power system. The results include net power, overal thermal efficiency, exergy destruction, exergy efficiency, power density, exergetic performance coefficient (EPC), ecological performance coefficient (ECOP), effective ecological power density (EFECPOD), and mean exergy density (MED), and cost of power density (COPD), which are calculated as functions of pressure and oxygen ratios. The conventional gas turbine power system obtained a pressure ratio for maximum net power of 20.8. Similarly, oxy-combustion power cycles at 26%, 28%, and 30% oxygen ratios have respective pressure ratios for maximum net power of 23.3, 27.4, and 29.7. Results from 24%-30% oxygen ratios are displayed to show the reactant oxygen's effect on the oxy-combustion power cycles. Increases in the pressure ratio show decreases in the total exergy destruction in both the conventional gas turbine power system and the oxy-combustion power systems. Meanwhile, increases in the pressure ratio show increases in the total efficiency, power density, exergy efficiency, EPC, EFFECPOD, and MED in both the conventional gas turbine and the oxy-combustion power systems. In addition, increases in the oxygen ratio in the oxycombustion power systems show different characteristics for these parameters based on the pressure ratio of the cycle. In terms of COPD, conventional gas turbine power systems are more advantageous than oxy-combustion power systems. Optimum COPD is obtained at a pressure ratio of 25.6.

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“…Chen et al [ 35 ] introduced the objective function

into the thermodynamic analysis and optimization of the Atkinson cycle. Atmaca and Gumus [ 36 ] compared and analyzed the optimal performance of a reversible Diesel cycle based on the

, and effective

(which was defined as the product of power output and thermal efficiency) criteria. Raman and Kumar [ 37 ] conducted thermodynamic analysis and optimization of a reversible Diesel cycle under the criteria of

, and effective

when the working fluid’s specific heats were linearly functioning with temperature.…”

Section: Introductionmentioning

confidence: 99%

Performance Optimizations with Single-, Bi-, Tri-, and Quadru-Objective for Irreversible Diesel Cycle

Shi

Chen

2021

Entropy

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Applying finite time thermodynamics theory and the non-dominated sorting genetic algorithm-II (NSGA-II), thermodynamic analysis and multi-objective optimization of an irreversible Diesel cycle are performed. Through numerical calculations, the impact of the cycle temperature ratio on the power density of the cycle is analyzed. The characteristic relationships among the cycle power density versus the compression ratio and thermal efficiency are obtained with three different loss issues. The thermal efficiency, the maximum specific volume (the size of the total volume of the cylinder), and the maximum pressure ratio are compared under the maximum power output and the maximum power density criteria. Using NSGA-II, single-, bi-, tri-, and quadru-objective optimizations are performed for an irreversible Diesel cycle by introducing dimensionless power output, thermal efficiency, dimensionless ecological function, and dimensionless power density as objectives, respectively. The optimal design plan is obtained by using three solution methods, that is, the linear programming technique for multidimensional analysis of preference (LINMAP), the technique for order preferences by similarity to ideal solution (TOPSIS), and Shannon entropy, to compare the results under different objective function combinations. The comparison results indicate that the deviation index of multi-objective optimization is small. When taking the dimensionless power output, dimensionless ecological function, and dimensionless power density as the objective function to perform tri-objective optimization, the LINMAP solution is used to obtain the minimum deviation index. The deviation index at this time is 0.1333, and the design scheme is closer to the ideal scheme.

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Power and Efficiency Analysis of Diesel Cycle Under Alternative Criteria

Cited by 13 publications

References 28 publications

Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles

Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles

Untitled

Performance Optimizations with Single-, Bi-, Tri-, and Quadru-Objective for Irreversible Diesel Cycle

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