Reduction in Greenhouse Gas Emissions in the Power Industry Using Compressed Air Power Enhancement Technology in Gas Turbines

Quintero, Sergio Arias; Auerbach, S.I.; Randel, J.; Kraft, R.

doi:10.1115/gt2014-27124

Cited by 2 publications

(1 citation statement)

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“…Dinc et al [34] introduced air inlet air cooling with a refrigeration system to the same gas turbine and obtained the normal ambient temperature power values with a PSFC improvement of 5.2% compared to the uncooled case. Additional studies on engine emissions can be found in the literature [35][36][37][38].…”

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confidence: 99%

Effect of Refrigerated Inlet Cooling on Greenhouse Gas Emissions for a 250 MW Class Gas Turbine Engine

Dinc,

Mamedov,

Duran

et al. 2023

Aerospace

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In this study, the effect of inlet air cooling on greenhouse gas (GHG) emissions and engine performance for a land-based gas turbine engine was investigated under varying ambient temperatures (15–55 °C). The study aimed to reduce GHG emissions while improving output power and fuel efficiency during hot weather operating conditions. For illustrative purposes, a representative gas turbine engine model, approximating the 250 MW class General Electric (GE) engine, was analyzed in a simple cycle. A refrigeration process was integrated with a turboshaft gas turbine engine to chill the incoming air, and the power required for cooling was extracted from the gas turbine’s output power. This mechanical chiller was assumed to provide a 15 °C inlet air temperature. Without inlet air cooling, at 55 °C ambient temperature, the engine’s power output was calculated to decrease by 15.06%, while power-specific fuel consumption and GHG emissions increased by 6.09% and 5.84%, respectively. However, activating the refrigeration or cooling system in the inlet made it possible to mitigate most of the adverse effects of hot weather on the engine’s performance and GHG emissions. Therefore, with inlet air cooling, the power output loss reduces to 3.28%, indicating an 11.78% recovery compared to the 15.06% loss without cooling. Similarly, the rise in power-specific fuel consumption caused by high ambient temperature decreases from 6.09% to 3.43%, reflecting a 2.66% improvement. An important finding of the study is that with inlet air cooling, the increase in GHG emissions reduces from 5.84% to 3.41%, signifying a 2.43% improvement on a hot day with a temperature of 55 °C.

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