Performance comparison of three chemical precooled turbine engine cycles using methanol and n-decane as the precooling fuels

Wang, Cong; Cheng, Kunlin; Qin, Jiang; Shao, Jiahui; Huang, Hongyan

doi:10.1016/j.energy.2022.123606

Cited by 15 publications

(9 citation statements)

References 28 publications

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“…In [2], a comparison of the performance of three cycles of a gas turbine engine using methanol and n-decane as fuels with pre-combustion chemical cooling was conducted. The calculation results showed that the use of preheated fuel is an effective way to improve engine performance.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Methanol demonstrates the best life cyclebased environmental performance compared to other fuel options. A drawback of the works [2][3][4][5] is the determination of enthalpy only as a function of temperature, which does not allow for a correct representation of the equivalent chemical reaction path and does not account for the thermal dissociation of combustion products. In [6], a study of a hybrid aircraft engine was conducted using three approaches: exergetic, exergoeconomic, and exergo-ecological analysis.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…In [7], six chemical nonequilibrium models are compared under various conditions encountered in real rocket engines. Unlike [2][3][4][5], the works [6,7] consider thermal dissociation of combustion products but do not accurately describe the equivalent chemical reaction path.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…It is known that methanol can be used as fuel for both aircraft and stationary gas turbine engines (GTE) [1][2][3][4][5]. Moreover, the conversion of gas turbine engines from one fuel type to another is relatively simple, not requiring significant investment to converting the existing fleet of stationary GTE to methanol fueling.…”

Section: Introductionmentioning

confidence: 99%

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Working process model development of the gas turbine engine combustor fueling on methanol

Shevchenko,

Ambrozhevich,

Fesenko

2024

EEJET

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The use of methanol as a fuel for aircraft and stationary gas turbine engines (GTE) is a priority direction in engine building. It is well known that when modeling the GTE performances using first-level mathematical models, there is an error in calculating specific fuel consumption, which is caused by the simplified description of the GTE combustor working process. The object of the study is the working process in the GTE combustor fueling on methanol. The peculiarity of the developed mathematical model of the working process of the GTE combustor is the use of enthalpy dependencies on temperature, pressure, and mixture composition. Enthalpy dependencies in this form implicitly account for the effect of thermal dissociation and allow for the correct formulation of the equivalent combustion reaction path. For two components (H2O and CO2), accounting for pressure leads to the fact that at standard temperature and partial pressures exceeding the saturation pressure, these components exist in a liquid state. This situation, with a constant enthalpy increment in the equivalent process of heating the combustion products from the standard temperature to the temperature at the end of adiabatic heat supply, decreases this temperature. Clarification of the temperature at the combustor outlet leads to changes in all calculated combustor performances, including the combustor fuel air ratio. The calculation results of the fuel air ratio are compared with known experimental data of the General Electric CF6-80A engine combustor (USA). The average calculation error of the fuel air ratio does not exceed 4 %. The developed model can be implemented in existing and developing mathematical models of gas turbine engines for temperatures at the end of the combustion process below 2,600 K

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Working process model development of the gas turbine engine combustor fueling on methanol

Shevchenko,

Ambrozhevich,

Fesenko

2024

EEJET

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“…Many studies on engine control and performance enhancements [1] have led to increased fuel economy [2][3][4] and stable combustion [5][6][7]. However, the drawbacks of high combustion emissions still endure [8,9]. Gaseous emissions such as nitrogen oxides and carbon monoxide impact human health, while carbon dioxide emissions promote climate change and global warming [10].…”

Section: Introductionmentioning

confidence: 99%

Measurement of Cyclic Variation of the Air-to-Fuel Ratio of Exhaust Gas in an SI Engine by Laser-Induced Breakdown Spectroscopy

Ikeda¹,

Kawahara

2022

Energies

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Temporally and spatially resolved laser-induced breakdown spectroscopy (LIBS) was applied to a four-stroke, single-cylinder test engine’s cyclic exhaust gas to demonstrate engine performance. The LIBS technique provided quantitative air-to-fuel ratio (A/F) measurements by generating localized breakdown plasma during the compression and exhaust strokes. The results showed that the timing and duration settings of the emission energy ionization and molecular spectra affect the intensity peaks. Optimum measurements performed between 200 ns and 10 ms after breakdown resulted in observed atomic spectra of CI (248 nm), Hβ (485 nm), Hα (656 nm), NI (745, 824 nm), and OI (777, 844 nm). The intensities of CI (248 nm) and Hα (656 nm) decreased with increasing A/F, whereas the intensity ratios of NI and OI remained constant. A decrease in the intensity ratio of C/O and Hα/O was observed as the A/F increased. This study is a major step toward defining a means of using LIBS to control the A/F ratio in gasoline engines by focusing on the exhaust gas rather than the flame.

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Performance assessment for a novel supersonic turbine engine with variable geometry and fuel precooled: From feasibility, exergy, thermoeconomic perspectives

Cai

Zheng

Fang

et al. 2023

Applied Thermal Engineering

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Performance comparison of three chemical precooled turbine engine cycles using methanol and n-decane as the precooling fuels

Cited by 15 publications

References 28 publications

Working process model development of the gas turbine engine combustor fueling on methanol

Working process model development of the gas turbine engine combustor fueling on methanol

Measurement of Cyclic Variation of the Air-to-Fuel Ratio of Exhaust Gas in an SI Engine by Laser-Induced Breakdown Spectroscopy

Performance assessment for a novel supersonic turbine engine with variable geometry and fuel precooled: From feasibility, exergy, thermoeconomic perspectives

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