Thermal performance of a gas turbine based on an exergy analysis

Haouam, Abdallah; Derbal, Chaima; Mzad, Hocine

doi:10.1051/e3sconf/201912801027

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…Also, it gets less than the standard temperature of 15 • C. Moreover, the lower exergy efficiency obtained in higher Ta. Also, it gets less than the standard temperature of 15 • C, which is consistent with most recent researchers [15,16,22]. The obtained results clearly show the effect of temperature on the energy efficiency available for the simulation results.…”

Section: Effect Of Change In T a On The Exergy Efficiencysupporting

confidence: 90%

Evaluation of the gas turbine unit in the Kirkuk gas power plant to analyse the energy and exergy using ChemCad simulation

Salah

Abbas

Ali

et al. 2022

International Journal of Low-Carbon Technologies

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The purpose of the study is to evaluate the thermal performance of the gas turbine unit represented by (K3) under actual weather conditions by applying the first and second laws of thermodynamics, the design production of the unit (283.6 MW) at standard conditions (1 bar) and temperature (15) Celsius, which included the analysis of the unit energy and available energy. To find out the weaknesses and losses in the system using the ChemCad simulation for a whole year and knowing the effects of external factors for the performance of the turbine unit (ambient temperature, compression ratio and relative humidity). Overall results showed that the maximum exergy efficiency was obtained in November; it was about 37% when Ta was 19.39°C. The maximum efficiency obtained at Ta equal to 19.39°C, which was around 37.67%. Higher ambient temperature increases specific fuel consumption. The results show that the specific fuel consumption (SFC) for the practical and program calculations increases with the increase in the temperature of the external environment and reached the maximum rate in the practical calculations in September (0.224) at 33.27°C. Thus it economically affects the price of power production. Moreover, the results showed that the combustion chamber occupied the first place for the destruction of available energy, and the results of energy efficiency and available energy were (39.20%) and (30.83%), respectively.

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Section: Effect Of Change In T a On The Exergy Efficiencysupporting

confidence: 90%

Evaluation of the gas turbine unit in the Kirkuk gas power plant to analyse the energy and exergy using ChemCad simulation

Salah

Abbas

Ali

et al. 2022

International Journal of Low-Carbon Technologies

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“…Investigations dealing with experimental investigations based on second law in gas turbines and power plants are rarely reported [ 57 , 58 , 59 , 60 , 61 , 62 ]. Regarding gas turbines, Ibrahim et al [ 57 ] conducted energy and exergy analysis of gas turbine power plants, including the compressor, combustion chamber and turbine.…”

Section: Experimental Investigations and 1d Calculations Of Exergy An...mentioning

confidence: 99%

“… Application Components with Reacting Flow 1D RANS LES DNS Entropy Source Terms Calculation Method Exp. Power plant Combustion Chamber [ 57 , 58 , 59 , 60 , 61 , 63 , 65 , 67 , 68 ] - - - Skeletal [ 57 , 58 , 68 ] Stationary gas turbine Combustion Chamber [ 71 , 72 , 73 ] - - - Skeletal - Aircraft gas turbine Combustion Chamber [ 74 , 75 , 76 , 77 , 78 , 79 ] - - …”

Section: Table A1mentioning

confidence: 99%

Entropy Generation Analysis in Turbulent Reacting Flows and Near Wall: A Review

Sadiki

Agrebi

Ries

2022

Entropy

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This paper provides a review of different contributions dedicated thus far to entropy generation analysis (EGA) in turbulent combustion systems. We account for various parametric studies that include wall boundedness, flow operating conditions, combustion regimes, fuels/alternative fuels and application geometries. Special attention is paid to experimental and numerical modeling works along with selected applications. First, the difficulties of performing comprehensive experiments that may support the understanding of entropy generation phenomena are outlined. Together with practical applications, the lumped approach to calculate the total entropy generation rate is presented. Apart from direct numerical simulation, numerical modeling approaches are described within the continuum formulation in the framework of non-equilibrium thermodynamics. Considering the entropy transport equations in both Reynolds-averaged Navier–Stokes and large eddy simulation modeling, different modeling degrees of the entropy production terms are presented and discussed. Finally, exemplary investigations and validation cases going from generic or/and canonical configurations to practical configurations, such as internal combustion engines, gas turbines and power plants, are reported. Thereby, the areas for future research in the development of EGA for enabling efficient combustion systems are highlighted. Since EGA is known as a promising tool for optimization of combustion systems, this aspect is highlighted in this work.

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“…MS-7001 turbine is a special purpose gas turbine produced by General Electric (GE) which is used in various industrial applications. It is important to note that the feasibility of an intake air cooling system for MS-7001 turbine will depend on the particular specifications and installation conditions (Haouam et al, 2019 andKhawaji et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Mega-train turbine performance improvement through intake air cooling system dimensioning and design

Djennane,

Benyoucef,

Yakoub

et al. 2024

SEES

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Gas turbines are a well-known rotating machines used in a variety of industrial sectors. However, the aforementioned turbines are highly sensitive to climatic changes such as variations in temperature and humidity, which can significantly affect their performance. Focusing on the being cited limitations, and aiming at the improvement of the system performances, it is important to control the ambient air temperature. In this context, the current study analyzes the design of an enhanced air-cooling system by putting forth a novel and practical method for raising output while lowering investment costs and ensuring steady and dependable operation. Firstly, the thermodynamic analysis of the realistic MS-7001 is carried out. Then, the feasibility of an air-cooling system for the MS-7001 turbine used at the Natural Gas Liquefaction complex – Skikda is conducted before starting the prototyping process. The proposed system uses a water evaporative cooler as a pre-cooler to reduce the temperature by around 12°C, while, increasing the relative humidity to around 90%, In order to ensure the thermal effectiveness of the system, a compressed air injection station is used for the production of a cold air at high pressure. CFD analysis results and conducted experiments on the proposed prototype have confirmed that it is effective and can be adapted to both wet and dry climates, even under hard variations. The adopted technique enhances the system efficiency and makes it possible to maintain the nominal operating point of gas turbines independently of external variations of atmospheric condition, without modifying their composition, which minimizes investment, development and maintenance costs.

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Thermal performance of a gas turbine based on an exergy analysis

Cited by 7 publications

References 2 publications

Evaluation of the gas turbine unit in the Kirkuk gas power plant to analyse the energy and exergy using ChemCad simulation

Evaluation of the gas turbine unit in the Kirkuk gas power plant to analyse the energy and exergy using ChemCad simulation

Entropy Generation Analysis in Turbulent Reacting Flows and Near Wall: A Review

Mega-train turbine performance improvement through intake air cooling system dimensioning and design

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