scholarly journals The Decarboniztion of Gas Turbine Power

2020 ◽  
Vol 142 (06) ◽  
pp. 52-53
Author(s):  
Lee S. Langston
Keyword(s):  
Carbon Dioxide ◽  
Energy Conversion ◽  
Gas Turbine ◽  
Carbon Dioxide Emissions ◽  
Gas Turbines ◽  
Sustainable Energy ◽  
Energy Conversion Systems

Abstract The gas turbine industry is facing the prospects of meeting proposed national and international targets for reducing carbon dioxide emissions and for the promotion of sustainable energy. The evolving role of gas turbines to decarbonize the world’s energy conversion systems has been the theme of articles in the Global Gas Turbine News (GGTN) in the last three issues, of September 2019, December 2019 and March 2020. The articles are reviewed here

scholarly journals Local Green Power Supply Plants Based on Alcohol Regenerative Gas Turbines: Economic and Environmental Aspects

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2156 ◽  
Author(s):  
Oleksandr Cherednichenko ◽  
Valerii Havrysh ◽  
Vyacheslav Shebanin ◽  
Antonina Kalinichenko ◽  
Grzegorz Mentel ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Gas Turbine ◽  
Carbon Dioxide Emissions ◽  
Gas Turbines ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Waste Heat ◽  
Turbine Engine ◽  
Engine Efficiency ◽  
Conversion Performance

Growing economies need green and renewable energy. Their financial development can reduce energy consumption (through energy-efficient technologies) and replace fossil fuels with renewable ones. Gas turbine engines are widely used in transport and industry. To improve their economic attractiveness and to reduce harmful emissions, including greenhouse gases, alternative fuels and waste heat recovery technologies can be used. A promising direction is the use of alcohol and thermo-chemical recuperation. The purpose of this study is to estimate the economic efficiency and carbon dioxide emissions of an alcohol-fueled regenerative gas turbine engine with thermo-chemical recuperation. The carbon dioxide emissions have been determined using engine efficiency, fuel properties, as well as life cycle analysis. The engine efficiency was maximized by varying the water/alcohol ratio. To evaluate steam fuel reforming for a certain engine, a conversion performance factor has been suggested. At the optimal water/methanol ratio of 3.075 this technology can increase efficiency by 4% and reduce tank-to-wake emission by 80%. In the last 6 months of 2019, methanol prices were promising for power and cogeneration plants in remote locations. The policy recommendation is that local authorities should pay attention to alcohol fuel and advanced turbines to curb the adverse effects of burning petroleum fuel on economic growth and the environment.

scholarly journals Chemically Recuperated Gas Turbines for Offshore Platform: Energy and Environmental Performance

2021 ◽  
Vol 13 (22) ◽  
pp. 12566
Author(s):  
Oleg Bazaluk ◽  
Valerii Havrysh ◽  
Oleksandr Cherednichenko ◽  
Vitalii Nitsenko
Keyword(s):  
Carbon Dioxide ◽  
Gas Turbine ◽  
Steam Reforming ◽  
Carbon Dioxide Emissions ◽  
Gas Turbines ◽  
Offshore Platforms ◽  
Turbine Engine ◽  
Wobbe Index ◽  
Gas Turbine Cycle ◽  
The Impact

Currently, offshore areas have become the hotspot of global gas and oil production. They have significant reserves and production potential. Offshore platforms are energy-intensive facilities. Most of them are equipped with gas turbine engines. Many technologies are used to improve their thermal efficiency. Thermochemical recuperation is investigated in this paper. Much previous research has been restricted to analyzing of the thermodynamic potential of the chemically recuperated gas turbine cycle. However, little work has discussed the operation issues of this cycle. The analysis of actual fuel gases for the steam reforming process taking into account the actual load of gas turbines, the impact of steam reforming on the Wobbe index, and the impact of a steam-fuel reforming process on the carbon dioxide emissions is the novelty of this study. The obtained simulation results showed that gas turbine engine efficiency improved by 8.1 to 9.35% at 100% load, and carbon dioxide emissions decreased by 10% compared to a conventional cycle. A decrease in load leads to a deterioration in the energy and environmental efficiency of chemically recuperated gas turbines.

Near-Zero CO2 Emissions Power Plant Based on High Temperature Fuel Cells

2019 ◽  
Author(s):  
Roberto Carapellucci ◽  
Roberto Cipollone ◽  
Davide Di Battista
Keyword(s):  
Carbon Dioxide ◽  
Fuel Cells ◽  
High Temperature ◽  
Fuel Cell ◽  
Power Plant ◽  
Energy Conversion ◽  
Gas Turbine ◽  
Co2 Emissions ◽  
Cathode Side ◽  
Energy Conversion Systems

Abstract The recent awareness on the environmental issues related to global warming is leading to the search for always more efficient energy conversion systems and, mainly, with very low carbon dioxide emissions. In fact, they are strictly related to the combustion reaction of fossil fuels which is the main process of the actual power generation technology. In this regard, fuel cells are energy conversion systems which are characterized by higher efficiency and near-zero CO2 emissions. Their novel integration with conventional power plants participates to the concept of the decarbonization of the economy. In this work, the integration of two high temperature fuel cells (HTFC) with a gas turbine power plant has been proposed and investigated, thanks to the combination of a physical model of the fuel cells and a numerical one of the components involved in the gas turbine cycle. In the layout studied, fresh air is compressed, pre-heated and used in a Solid Oxide Fuel Cell (SOFC), where the high operating temperature and the exothermic process give exhaust gases at very high temperatures, suitable for an expansion in a turbine. After the expansion, the gases are rich of CO2 and, so, they can be sent to the cathode side of a Molten Carbonate Fuel Cell (MCFC). Hence, the so-defined integrated plant is composed by three power units: a turbine, a SOFC and a MCFC; operating pressure, fuel need, oxygen and carbon dioxide utilizations in the fuel cells are parameterized in order to optimize the whole plant and find additional room of energy exploitation. Moreover, the MCFC acts as an active device for carbon separation, introducing further environmental benefits.

scholarly journals The Role of the Recuperator in High Performance Gas Turbine Applications

1978 ◽  
Author(s):  
C. F. McDonald
Keyword(s):  
High Temperature ◽  
Heat Exchanger ◽  
Gas Turbine ◽  
Gas Turbines ◽  
High Performance ◽  
Waste Heat ◽  
Closed Cycle ◽  
Exhaust Waste Heat ◽  
Prime Movers

With soaring fuel costs and diminishing clean fuel availability, the efficiency of the industrial gas turbine must be improved by utilizing the exhaust waste heat by either incorporating a recuperator or by co-generation, or both. In the future, gas turbines for power generation should be capable of operation on fuels hitherto not exploited in this prime-mover, i.e., coal and nuclear fuel. The recuperative gas turbine can be used for open-cycle, indirect cycle, and closed-cycle applications, the latter now receiving renewed attention because of its adaptability to both fossil (coal) and nuclear (high temperature gas-cooled reactor) heat sources. All of these prime-movers require a viable high temperature heat exchanger for high plant efficiency. In this paper, emphasis is placed on the increasingly important role of the recuperator and the complete spectrum of recuperative gas turbine applications is surveyed, from lightweight propulsion engines, through vehicular and industrial prime-movers, to the large utility size nuclear closed-cycle gas turbine. For each application, the appropriate design criteria, types of recuperator construction (plate-fin or tubular etc.), and heat exchanger material (metal or ceramic) are briefly discussed.

scholarly journals Supercritical Carbon Dioxide Applications for Energy Conversion Systems

2015 ◽  
Vol 82 ◽  
pp. 819-824 ◽  
Author(s):  
Damiano Vitale Di Maio ◽  
Alessandro Boccitto ◽  
Gianfranco Caruso
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Energy Conversion ◽  
Energy Conversion Systems ◽  
Supercritical Carbon

Combustion Characteristics of Methane-CO2 Mixture and a Microturbine Cogeneration System Utilized Sewage Digester Gas

2007 ◽  
Author(s):  
Tadashi Kataoka ◽  
Teruyuki Nakajima ◽  
Takahiro Nakagawa ◽  
Nobuhiko Hamano ◽  
Saburo Yuasa
Keyword(s):  
Carbon Dioxide ◽  
Gas Turbine ◽  
Power Output ◽  
Gas Turbines ◽  
Combustion Efficiency ◽  
Stable Operation ◽  
Combustion System ◽  
Lean Burn ◽  
Peripheral Equipment ◽  
Cogeneration System

This paper describes an approach to utilize sewage digester gas as a fuel for gas turbines. Sewage digester gas is composed of about 60% methane and 39% carbon dioxide. To apply it as a gas turbine fuel requires optimizing the combustion system to improve the combustion efficiency, flame-holding characteristics, etc. This paper presents an approach whereby a mass-produced microturbine and its peripheral equipment can be converted for such application with a minimum of modification and without the use of extraordinary combustors. The approach is described whereby a recuperative cycle microturbine having rich-burn, quick-mix, lean-burn (RQL) combustor is started up with a high-Btu fuel and the fuel is switched to digester gas when the inlet-air has been preheated to 600K or higher. This approach has proven that reliable starting, stable operation from idling to the rated power output, and efficiency equivalent to that obtained with a high-Btu fuel, can be achieved by the microturbine utilizing sewage digester gas.

Carbon dioxide emissions in OECD service sectors: the critical role of electricity use

Energy Policy ◽  
1998 ◽  
Vol 26 (15) ◽  
pp. 1137-1152 ◽  
Author(s):  
Tom Krackeler ◽  
Lee Schipper ◽  
Osman Sezgen
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Critical Role ◽  
Electricity Use ◽  
Service Sectors
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