Effect of various inlet air cooling methods on gas turbine performance

Farzaneh–Gord, Mahmood; Deymi–Dashtebayaz, Mahdi

doi:10.1016/j.energy.2010.11.027

Cited by 131 publications

(47 citation statements)

References 17 publications

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“…They concluded that these two systems generate 40% and 55% more electrical power respectively than a fog cooling system [16]. Farzaneh-Gord and Deymi-Dashtebayaz investigated the effects for Khangiran power plant in the south Iran of input air cooling by two common methods (evaporative cooling and mechanical chillers) and a new method based on extra gas pressure derived from gas pressure diminution stations [17]. They found that system efficiencies are raise using absorption chiller (by 5%), evaporative cooling (3%) and the turbo-expander method (4%) [17].…”

Section: Introductionmentioning

confidence: 99%

“…Farzaneh-Gord and Deymi-Dashtebayaz investigated the effects for Khangiran power plant in the south Iran of input air cooling by two common methods (evaporative cooling and mechanical chillers) and a new method based on extra gas pressure derived from gas pressure diminution stations [17]. They found that system efficiencies are raise using absorption chiller (by 5%), evaporative cooling (3%) and the turbo-expander method (4%) [17]. Wang and Chiou examined the effect of simultaneous vapor injection and input air cooling on a frame 7B turbine in Taiwan, and demonstrated that turbine output power increased from 52.1 to 88.2 MW and total efficiency from 29.0% to 37.2% during the summer [18].…”

Section: Introductionmentioning

confidence: 99%

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Exergy, Economic and Environmental Analyses of Gas Turbine Inlet Air Cooling with a Heat Pump Using a Novel System Configuration

2015

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Gas turbines incur a loss of output power during hot seasons due to high ambient air temperatures, and input air cooling systems are often used to partly offset this problem. Here, results are reported for an investigation of the utilization of a heat pump to cool the inlet air of a gas turbine compressor. The analyses are carried out for two climates: the city of Yazd, Iran, which has a hot, arid climate, and Tehran, Iran, which has a temperate climate. The heat pump input power is obtained from the gas turbine. The following parameters are determined, with and without the heat pump: net output power, first and second law efficiencies, quantities and costs of environmental pollutants, entropy generation and power generation. The results suggest that, by using the air-inlet cooling system, the mean output power increases during hot seasons by 11.5% and 10% for Yazd and Tehran, respectively, and that the costs of power generation (including pollution costs) decrease by 11% and 10% for Yazd and Tehran, respectively. Also, the rate of generation of pollutants such as NOx and CO decrease by about 10% for Yazd and 35% for Tehran, while the average annual entropy generation rate increases by 9% for Yazd and 7% for Tehran, through air-inlet cooling. The average increase of the system first law efficiency is 2% and of the system second law efficiency is 1.5% with the inlet-air cooling system. OPEN ACCESSSustainability 2015, 7 14260

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exergy, Economic and Environmental Analyses of Gas Turbine Inlet Air Cooling with a Heat Pump Using a Novel System Configuration

2015

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“…Many researchers have studied different cooling methods to enhance the performance of GT plants operating at high conditions of ambient temperature [12,13,14]. Johnson [15] presented a discussion of the theory and operation of evaporative coolers for industrial gas turbine installations.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of a Gas Turbine Power Plant Modelled with an Evaporative Cooler

Oyedepo¹,

Kilanko²

2014

Int. J. Thermo

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In this paper the performance enhancement of gas turbine power plants by cooling the compressor intake air with an evaporative cooler is studied. This study investigated the effect of inlet air cooling system on the performance of an existing gas turbine power plant in Nigeria. The results show that for each 5 o C decrease of inlet air temperature, net output power increases around 5-10% and the thermal efficiency increases around 2-5%. It is shown that the amount of this increase is higher when the pressure ratio is high and turbine inlet temperature is low. The results of this study shows that retrofitting of the existing gas turbine plant with inlet air cooling system gives a better system performance and may prove to be an attractive investment opportunity to the Nigeria government and stakeholders of the plant.

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“…It is well known that ambient temperature, humidity and pressure are important factors in gas turbine performance. As mentioned in [2], thermodynamic analyses exposed that thermal efficiency and specific output decrease with an increase of humidity and ambient temperature.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Self-Cleaning Canister Filter With Add-On Filter Cap

et al. 2017

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Abstract. Filtration in a turbo machinery system such as a gas turbine will ensure that the air entering the inlet is free from contaminants that could bring damage to the main system. Self-cleaning filter systems for gas turbines are designed for continuously efficient flow filtration. A good filter would be able to maintain its effectiveness over a longer time period, prolonging the duration between filter replacements and providing lower pressure drop over its operating lifetime. With this goal in mind, the current study is focused on the difference in pressure loss of the benchmark Salutary Avenue Self-cleaning filter in comparison to a new design with an add-on filter cap. Geometry for the add-on filter cap will be based from Salutary Avenue Manufacturing Sdn.Bhd. SOLIDWORKS software was used to model the geometry of the filter, while simulation analysis on the flow through the filter was done using Computational Fluid Dynamic (CFD) software. The simulations are based on a low velocity condition, in which the parameter for the inlet velocity are set at 0.032 m/s, 0.063 m/s, 0.094 m/s and 0.126 m/s respectively. From the simulation data obtained for the inlet velocities considered, the pressure drop reduction of the modified filter compared to the benchmark was found to be between 7.59% and 30.18%. All in all, the modification of the filter cap produced a lower pressure drop in comparison with the benchmark filter; an improvement of 27.02% for the total pressure drop was obtained.

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Effect of various inlet air cooling methods on gas turbine performance

Cited by 131 publications

References 17 publications

Exergy, Economic and Environmental Analyses of Gas Turbine Inlet Air Cooling with a Heat Pump Using a Novel System Configuration

Exergy, Economic and Environmental Analyses of Gas Turbine Inlet Air Cooling with a Heat Pump Using a Novel System Configuration

Thermodynamic Analysis of a Gas Turbine Power Plant Modelled with an Evaporative Cooler

Numerical Study on Self-Cleaning Canister Filter With Add-On Filter Cap

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