Performance degradation analysis of combined cycle power plant under high ambient temperature

Wan, Anping; Chen, Ting

doi:10.2298/tsci210221226w

Cited by 4 publications

(2 citation statements)

References 27 publications

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“…Several researchers have analyzed GT performance to determine how ambient temperature impacts optimal operation. Wan and Chen [14] analyzed GT performance at different temperatures by studying the thermodynamic characteristics and thermal properties of various working fluids. Their results showed that power generation decreased by 22.6% with increased ambient air temperatures from 5 to 35 °C.…”

Section: Introductionmentioning

confidence: 99%

Influence of Surrounding Air Temperature and Humidity upon the Performance of a Gas Turbine Power Plant

Alaa Ahmad Sammour,

Oleg V. Komarov,

Farkad A. Lattieff

et al. 2024

ARFMTS

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Nowadays, energy demand continuously rises while energy stocks are dwindling. Using current resources more effectively is crucial for the world. A wide method to effectively utilize energy is to generate electricity using thermal gas turbines (GT). One of the most important problems that gas turbines suffer from is high ambient air temperature especially in summer. The current paper details the effects of ambient conditions on the performance of a gas turbine through energy audits taking into account the influence of ambient conditions on the specific heat capacity ( , isentropic exponent ( ) as well as the gas constant of air . A computer program was developed to examine the operation of a power plant at various ambient temperatures and relative humidities. The ambient temperatures ranged from 0 to 45 ºC, with relative humidities from 10 to 90%. The obtained results show that a GT operated at increased inlet air temperatures is characterized by lower net power and thermal efficiency. At higher inlet air temperatures, increased relative humidity has a slight positive impact on the GT cycle net power and its thermal efficiency. Net output power of the GT decreased from 93.3 MW at 15 °C to 70 MW at 45 °C. Its efficiency decreased from 32.32% at 5 °C to 28.3% at 30 °C. Although fuel consumption is reduced, the heat rate as well and the specific fuel consumption (SFC) are enhanced. SFC increased by 5.36% with a 10 °C temperature rise in temperature at a constant relative humidity. Therefore, use of a gas turbine with inlet air cooling and humidification is appropriate for improved GT efficiency.

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Section: Introductionmentioning

confidence: 99%

Influence of Surrounding Air Temperature and Humidity upon the Performance of a Gas Turbine Power Plant

Alaa Ahmad Sammour,

Oleg V. Komarov,

Farkad A. Lattieff

et al. 2024

ARFMTS

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“…Additionally, they reported that when cooling inlet air temperature is reduced to 10 o C, the output power is augmented by 0.37-7.59%. Wan et al, [31] analyzed gas turbine performance under various temperatures considering the thermal characteristics of different working fluids. Their results showed that power generation decreased by 22.6% and efficiency decreased by 57.28% as ambient air temperatures changed from 5 to 35 o C. Additionally, the output of steam and gas turbines both dropped by 17.0% and 16.2%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Influence of Ambient Conditions on the Thermodynamic Characteristics of Air as a Working Fluid for Gas Turbines

Sammour

Komarov

Qasim

et al. 2023

ARFMTS

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The study focuses on estimating thermodynamic characteristics at constant pressure for ambient air as a working fluid for gas turbines. The objective of this paper is to carry out a thermodynamic analysis of the properties of air as a working gas for a power plant. Various values of relative humidity, as well as temperatures, were examined in this study. Code was written using EES (Engineering Equations Solver) to conduct the simulation. This code contains the necessary equation to compute the thermodynamic characteristics of the working fluid. According to the results, both temperature and relative humidity remarkably influence the specific heat capacity (C_p), isentropic exponent (γ_h) as well as the gas constant of air (R_h). According to the results, when the ambient air temperature is increased from 0 to 45 ℃ with constant relative humidity values of either 10% or 90%, the specific heat capacity increases by 5.01% and 17.6%, respectively. Furthermore, the isentropic exponent decreases by 1.07% and 4.5%, respectively. The results show that the gas constant of air increases with ambient air temperature and relative humidity. One can conclude that the ambient conditions have considerable influence on the thermodynamic characteristics of a gas turbine working fluid.

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Performance improvement of combined cycle power plant with combined ice slurry thermal energy storage cooling and adsorption cooling

Chen¹,

Wan²,

Zuo³

et al. 2023

Journal of Energy Storage

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Performance degradation analysis of combined cycle power plant under high ambient temperature

Cited by 4 publications

References 27 publications

Influence of Surrounding Air Temperature and Humidity upon the Performance of a Gas Turbine Power Plant

Influence of Surrounding Air Temperature and Humidity upon the Performance of a Gas Turbine Power Plant

Investigation of the Influence of Ambient Conditions on the Thermodynamic Characteristics of Air as a Working Fluid for Gas Turbines

Performance improvement of combined cycle power plant with combined ice slurry thermal energy storage cooling and adsorption cooling

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