A review of inlet air-cooling technologies for enhancing the performance of combustion turbines in Saudi Arabia

Al-Ibrahim, A.M.; Varnham, Abdulhadi

doi:10.1016/j.applthermaleng.2010.04.025

Cited by 127 publications

(63 citation statements)

References 47 publications

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“…With this equation, the fuel-based electricity cost can be calculated considering a fuel cost equivalent to 0.003 US$/MJ and specifying the value of first law efficiency [20].…”

Section: Economic and Environmental Analyses Of Gas Turbine With And mentioning

confidence: 99%

“…By investigating the performance of a gas cycle including two high-pressure and low-pressure compressors and an inter-cooler evaporative chiller with a heat recovery system, Basilly found that cooling the compressor inlet air with an absorption chiller increased the efficiency and the turbine power 3.5% and 50%, respectively [19]. Al-Ibrahim and Varnham showed in Saudi Arabia that decreasing compressor input temperature from 50 to 10 °C increased the output power by 30% in Riyadh and by 33% in Ghasim [20]. In a study of gas turbine cycle performance, Bassily demonstrated that reducing the compressor inlet temperature by evaporative chilling elevated the cycle efficiency by 3.5%, and that evaporative cooling and heat recovery in the compressor outlet (after-cooling) as well as input air cooling by evaporative chilling increased the cycle output by 16% and the power by 110 kW [21].…”

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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“…With this equation, the fuel-based electricity cost can be calculated considering a fuel cost equivalent to 0.003 US$/MJ and specifying the value of first law efficiency [20].…”

Section: Economic and Environmental Analyses Of Gas Turbine With And mentioning

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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“…This can be particularly problematic since periods of peak load demand tend to increase in summer [1][2][3]. A method to enhance energy efficiency is cooling the inlet air to the gas turbine and inlet fogging [4].…”

Section: Introductionmentioning

confidence: 99%

Comparative Exergoeconomic Analyses of Gas Turbine Steam Injection Cycles with and without Fogging Inlet Cooling

et al. 2015

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Abstract:The results are reported of exergoeconomic analyses of a simple gas turbine cycle without a fogging system (SGT), a simple steam injection gas turbine cycle (STIG), and a steam injection gas turbine cycle with inlet fogging cooler (FSTIG). The results show that (1) a gas-turbine cycle with steam injection and simultaneous cooling has a higher power output than the other considered cycle; (2) at maximum energy efficiency conditions the gas turbine has the highest exergy efficiency of the cycle components and the lowest value of exergy efficiency is calculated for the fog cooler, where the mixing of air and water at greatly different temperatures causes the high exergy destruction; and (3) utilization of the fogging cooler in the steam injection cycle increases the exergy destruction in the combustion chamber. Furthermore, the simple gas turbine cycle is found to be more economic as its relative cost difference, total unit product cost, and exergoeconomic factors are less than those for the two other configurations. However, its efficiency and net power output are notably lower than for the gas turbine with steam injection and/or fog cooling. The total unit product cost is highest for the simple gas turbine with steam injection. OPEN ACCESSSustainability 2015, 7 12237

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“…Al Ibrahim et al [9] tested a simple gas cycle in the central Qaseem region of Saudi Arabia. They concluded that high ambient temperatures of mid-day of the summer season cause a 24% decreasing in system capacity [10]. Baakeem et al [11] studied theoretically the effect of the average hourly temperature and relative humidity on the performance of a typical gas turbine unit used in three Saudi regions: Ad Dammam, Riyadh and Jeddah.…”

Section: Capacity (Mw)mentioning

confidence: 99%

Impact of Ambient Conditions of Arab Gulf Countries on the Performance of Gas Turbines Using Energy and Exergy Analysis

Baakeem

Orfi

Alaqel

et al. 2017

Entropy

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Abstract:In this paper, energy and exergy analysis of typical gas turbines is performed using average hourly temperature and relative humidity for selected Gulf cities located in Saudi Arabia, Kuwait, United Arab Emirates, Oman, Bahrain and Qatar. A typical gas turbine unit of 42 MW is considered in this study. The electricity production, thermal efficiency, fuel consumption differences between the ISO conditions and actual conditions are determined for each city. The exergy efficiency and exergy destruction rates for the gas turbine unit and its components are also evaluated taking ISO conditions as reference conditions. The results indicate that the electricity production losses occur in all cities during the year, except in Dammam and Kuwait for the period between November and March. During a typical day, the variation of the power production can reach 4 MW. The rate of exergy destruction under the combined effect of temperature and humidity is significant in hot months reaching a maximum of 12 MW in July. The presented results show also that adding inlet cooling systems to the existing gas turbine units could be justified in hot periods. Other aspects, such as the economic and environmental ones, should also be investigated.

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A review of inlet air-cooling technologies for enhancing the performance of combustion turbines in Saudi Arabia

Cited by 127 publications

References 47 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

Comparative Exergoeconomic Analyses of Gas Turbine Steam Injection Cycles with and without Fogging Inlet Cooling

Impact of Ambient Conditions of Arab Gulf Countries on the Performance of Gas Turbines Using Energy and Exergy Analysis

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