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

Author

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  • Mohammad Reza Majdi Yazdi

    (Department of Aerospace Engineering, Kish International Campus, University of Tehran, Kish 79416-55665, Iran)

  • Mehdi Aliehyaei

    (rtment of Mechanical Engineering, Pardis Branch, Islamic Azad University, Pardis New City 14778-93855, Iran)

  • Marc A. Rosen

    (Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON L1H 7K4, Canada)

Abstract

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 NO x 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.

Suggested Citation

  • Mohammad Reza Majdi Yazdi & Mehdi Aliehyaei & Marc A. Rosen, 2015. "Exergy, Economic and Environmental Analyses of Gas Turbine Inlet Air Cooling with a Heat Pump Using a Novel System Configuration," Sustainability, MDPI, vol. 7(10), pages 1-28, October.
    • Handle: RePEc:gam:jsusta:v:7:y:2015:i:10:p:14259-14286:d:57582
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    References listed on IDEAS

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    1. Palacios, Jose-Luis & Calvo, Guiomar & Valero, Alicia & Valero, Antonio, 2018. "The cost of mineral depletion in Latin America: An exergoecology view," Resources Policy, Elsevier, vol. 59(C), pages 117-124.
    2. M. Ehyaei & M. Kasaeian & Stéphane Abanades & Armin Razmjoo & Hamed Afshari & Marc Rosen & Biplab Das, 2023. "Natural gas‐fueled multigeneration for reducing environmental effects of brine and increasing product diversity: Thermodynamic and economic analyses," Post-Print hal-04113893, HAL.

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