Enhancing gas turbine performance by intake air cooling using an absorption chiller

Mohanty, B.; Paloso, G.

doi:10.1016/0890-4332(95)90036-5

Cited by 74 publications

(32 citation statements)

References 3 publications

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“…Ameri et al investigated the output power of Frame 5 and 6 gas turbines at the Kish Island, Iran gas power plant using absorption chillers for inlet air cooling, and found that this method raised the output power of gas turbine by about 14% [12]. Mohanty and Poloso used absorption chillers on gas turbine inlets in Bangkok to decrease the compressor input air temperature about 15 °C, achieving an increase in turbine output work of 11% [13]. Boonnasa et al increased the turbine work output of two of gas turbines units of 110 MW capacity in Thailand by 10.6% by applying absorption chillers for compressor inlet air cooling [14].…”

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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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%

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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“…According to thermodynamics, with the increase of ambient temperature, air density decreases, the inlet air mass flow of compressor and power capability of units reduce, so gas turbine and combined cycle relative power output both fall ［3］ . Especially in the hot summer, outdoor high temperature restricts air mass flow into gas turbine compressor, which makes the capacity of power generation and heat recovery provided by gas turbine decline linearly [4]. GTIAC (gas turbine inlet air cooling) is a practice used to improve power performances of CCHP system ［ 5, 6 ］ .…”

Section: Introductionmentioning

confidence: 99%

Typical Characteristics of Gas Turbine-Based CCHP System with Inlet Air Cooling

Zeng

Yang

2011

2011 Asia-Pacific Power and Energy Engineering Conference

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Gas turbine-based CCHP system performance is strongly influenced by the ambient conditions. Gas turbine inlet air cooling technology improves gas turbine performance and its integrated CCHP system performance as well. Using the typical analytical characteristics of the system components, i.e. ， small-sized gas turbine, single pressure HRSG and double-effect water/LiBr absorption chiller, this paper investigated the effect of gas turbine inlet air cooling on the operation performance of an integrated CCHP system. Thermal efficiency, equivalent exergy efficiency and economic exergy efficiency of the system were also discussed. The results indicate that, every 1℃ increase in gas turbine inlet air temperature averagely results in 0.879% decrease in power capacity, 0.282% decrease in heat capacity and 0.205% decrease in cooling capacity. Gas turbine inlet air cooing influences the CCHP thermal efficiency and economic exergy efficiency slightly, even brings out a negative increase. Nomenclature: COP--performance coefficient of chiller COP/ COP 0 --relative performance coefficient G f --relative fuel consumption rate N gt --relative power output Q c --relative cooling capacity Q h --relative heating capacity H u --low calorific value of fuel(kJ/kg) R--load rate of chiller r--ratio of work to heat t a --ambient temperature (℃) t 1 --inlet air temperature (℃) t cs --chilled water temperature t wi --inlet cooling water temperature of chiller X Ac --flowrate ratio of the steam for the absorption chiller to the total HRSG steam η ec --economic exergy efficiency η ec /η ec0 --relative economic exergy efficiency η gt --gas turbine design efficiency π c --pressure ratio of gas turbine p s --steam pressure of HRSG α--price ratio of cooling to power β--price ratio of heating to power γ--ratio of steam flowrate to fuel flowrate τ--temperature ratio of gas turbine 0--design value

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“…There is a quite extensive literature on this particular application, thus only a few examples will be given here. In Mohanty and Paloso (1995) it is studied the use of a water/LiBr double-e!ect chiller to cool the air inlet of a gas turbine of 100 MW situated in the area of Bangkok. This work concludes that it is more economic the integration of an absorption cycle than the installation of a gas turbine of higher capacity, based on the investment costs of these units.…”

Section: Introductionmentioning

confidence: 99%

Optimization of energy plants including water/lithium bromide absorption chillers

Bruno

Miquel

Castells

2000

Int. J. Energy Res.

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Enhancing gas turbine performance by intake air cooling using an absorption chiller

Cited by 74 publications

References 3 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

Typical Characteristics of Gas Turbine-Based CCHP System with Inlet Air Cooling

Optimization of energy plants including water/lithium bromide absorption chillers

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