Gas Turbine and the Environment: Towards Net Zero CO2 Propulsion Systems

A special issue of Aerospace (ISSN 2226-4310). This special issue belongs to the section "Aeronautics".

Deadline for manuscript submissions: closed (15 June 2023) | Viewed by 2112

Special Issue Editors

Centre for Propulsion Engineering, Cranfield University, Cranfield MK43 0AL, UK
Interests: gas turbines and propulsion; power systems and turbines
Special Issues, Collections and Topics in MDPI journals
Centre for Propulsion Engineering, Cranfield University, Cranfield MK43 0AL, UK
Interests: gas turbines; transient performance; hybrid gas turbine and electrification

Special Issue Information

Dear Colleagues,

Gas turbines have dominated aircraft propulsion for more than 60 years, and have been a driving factor for the growth and success of the aviation industry and air transport. With success comes responsibility and the requirement for sustainable growth. Meeting future environmental targets while ensuring commercial success and uncompromised safety standards requires an unprecedented investment in research and technology. Given the urgency and the ambition, evolutionary, synergistic, and disruptive technologies need to be developed in the next 10–20 years. Advances in fuels and energy storage solutions that include hydrogen, ammonia, SAF, and others, combined with batteries and the introduction of electrification, digitalisation, additive manufacturing, advanced materials, smart sensors, energy harvesting, and the exponential increase in computational power can revolutionise the design and operation of the gas turbine. In this context, this Special Issue  on Gas Turbines and the Environment is focused on concepts and technologies that will lead to a new, carbon free, and low emissions era for aviation and air-transport. Papers concerning the following topics are of particular interest and highly encouraged:

  • Fuels and combustion;
  • Novel cycles, engine configurations, and propulsion architectures;
  • Component technologies;
  • Control strategies and sensor technologies;
  • Green operations and life cycle aspects;
  • Ground infrastructure for hydrogen and electrified applications.

Prof. Dr. Panagiotis Laskaridis
Prof. Dr. Konstantinos Kyprianidis
Dr. Hossein Balaghi Enalou
Guest Editors

Manuscript Submission Information

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Published Papers (1 paper)

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Research

19 pages, 6878 KiB  
Article
Effect of Refrigerated Inlet Cooling on Greenhouse Gas Emissions for a 250 MW Class Gas Turbine Engine
by Ali Dinc, Ali Mamedov, Ertugrul Tolga Duran, Fethi Abbassi, Ibrahim Elbadawy, Kaushik Nag, Mehdi Moayyedian, Mohamed Fayed, Murat Otkur and Yousef Gharbia
Aerospace 2023, 10(10), 833; https://doi.org/10.3390/aerospace10100833 - 25 Sep 2023
Viewed by 1036
Abstract
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 [...] Read more.
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. Full article
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