gas turbine efficiency Articles
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Exergy analysis of the steam-injected gas turbine
In this paper, the effect of steam injection in the combustion chamber on the exergy efficiency of a gas turbine was investigated. Cycle exergy efficiency, net power output and exergy destruction have been calculated for different mass flow rates and temperature of the injected steam. The range of variation of the mass flow rate was between 0 and 5.24% of the design air flow rate, and the ...
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Modelling and exergoeconomic optimisation of a gas turbine with absorption chiller using evolutionary algorithm
In this paper, thermodynamic modelling of a gas turbine cycle with absorption chiller is performed. A thermoeconomic approach is utilised to find the most optimal values of design parameters for practical applications. Some design parameters considered are compressor pressure ratio, compressor isentropic efficiency, gas turbine isentropic efficiency, gas turbine inlet temperature, HRSG pressure, ...
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Modelling and exergoeconomic based design optimisation of combined power plants
In this research a combined cycle power plant (CCPP) which can provide 80 MW of electrical power has been studied. The design parameters of the plant were chosen as: compressor pressure ratio, compressor isentropic efficiency, gas turbine isentropic efficiency, and turbine inlet temperature, pinch difference temperature, steam turbine inlet temperature, steam turbine isentropic efficiency, ...
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Gas turbine emissions and environmental impact of efficiency boosting techniques
In this paper, environmental impact of gas turbine power generation equipment is reviewed and emissions sources are discussed. The types of pollutants in simple cycle gas turbine power plants and the associated air quality problems are compiled. Then, airborne pollutants which are generated in the combustion turbines are described and factors affecting emission formation are discussed. Also, the ...
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Equal to Removing 1 Million Cars from the Road Case Study
Powerphase commissioned a grid level analysis to assess how Turbophase technology could increase existing natural gas combined cycle gas turbine (GT) efficiencies in Florida, displacing baseload coal-fired generation and inefficient peaking plants to reduce electricity costs and pollution. Today’s electricity prices in Florida are higher than the national average, and while most of this ...
By Powerphase
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The effect of precooling inlet air on CHP efficiency in natural gas pressure reduction stations
Almost all pressure reduction stations in Iran use expansion valves to reduce the natural gas pressure, which leads to wasting large amount of exergy. In this paper, a system is proposed which includes the modification of a conventional pressure reduction station with the addition of a turbo expander and a gas turbine for power recovery and generation. The next step is investigating the effect of ...
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Thermodynamic analysis of a hybrid gas turbine/thermoacoustic heat pump/refrigeration engine
Possible performance enhancement of small gas turbine power plants through the application of thermoacoustic systems is examined. The thermoacoustic subsystem is powered only by the waste heat of the gas turbine. Two different gas turbine configurations are considered: a Thermoacoustic refrigerator assisted gas turbine (TRG) and a Combined thermoacoustic heat pump and refrigeration assisted gas ...
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Co-production of synthesis gas and power by integration of Partial Oxidation reactor, gas turbine and air separation unit
A new synthesis gas production process based on partial oxidation (POX) of natural gas is investigated. Synthesis gas and mechanical power are generated in a plant that integrates a POX reactor, a synthesis gas turbine and an air separation unit. The synthesis gas is expanded in the turbine which runs the air separation unit. By means of an exergy analysis, it is shown that the synthesis gas ...
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Efficiency of a standard gas-turbine power generation cycle running on different fuels
This paper presents a study of second-law efficiency in a standard Brayton combined cycle power generation, using several paraffinic fuels ranging from methane to heptane. The main objective of the study was to identify a trend with the number of carbon atoms in the compound. In this way, a qualitative criterion can be built to evaluate the properties of poor-quality gas turbine fuels containing ...
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11 MWe Combined Heat and Power - Food Processing Industry - Case Study
OWNER Cargill B.V LOCATION Sas Van Gent, The Netherlands PRODUCT Mars 100 Gas Turbine CUSTOMER VALUE Environmental Compliance Increased Performance Cargill provides food, agriculture, financial and industrial products and services to the world. Because their processes require heavy energy use and steam for process heat, the company operates many combined heat and power (CHP) plants at their ...
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Understanding fuel switching under the EU ETS
Since the creation of the European Union Emission Trading Scheme (EU ETS), European power producers have monitored carbon emissions resulting from the composition of their production. Fuel switching is the main short–term abatement measure under the EU ETS. It consists in substituting combined cycle gas turbines (CCGTs) for hard–coal plants in off–peak power generation. Thereby coal plants run ...
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Exergy analysis of gas turbine – solid oxide fuel cell–based combined cycle power plant
Fuel cell technology is one of the promising systems for cleaner and competitive alternate power generation systems. When the high temperature fuel cells like solid oxide fuel cell and molten carbon fuel cell are integrated with the gas turbines, the total thermal efficiency of the combined cycle can be obtained greater than 60%. In the present work, thermodynamic analysis of SOFC–GT combined ...
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Pressurised pulverised coal combustion ? a coal-based combined-cycle state of the cooperative project: cleaned flue gas matches specifications for use with gas turbines
A high efficiency of 60% in a combined-cycle power plant technology with fuels like gas or light oil is estimated to be achievable. On the other hand existing conventional coal-fired power plants based on steam generation have an efficiency of about 40?45%. A huge potential of improvement in efficiency could be achieved by the implementation of a simple and cost-effective technology: PPCC, a ...
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Combined fuel cell?gas turbine plant for highly efficient power generation from renewable energy sources
The impact of renewable energy sources on today's energy supply substantiates the importance of hydrogen as an energy carrier. Hydrogen can be directly produced from solar energy and is considered a promising technology for temporary storage of electrical energy from wind turbines and photovoltaic systems. The generation of electrical energy from stored hydrogen requires highly efficient systems ...
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24.5 MWe - Combined Heat and Power Pulp And Paper Industry - Case Study
OWNER AIE IDAE Sant Joan LOCATION Sant Joan Les Fonts (Girona), Spain PRODUCT Titan 250 Gas Turbine CUSTOMER VALUE Efficiency of Combined Heat and Power Plant The Spanish Institute for Energy Diversification and Saving (IDAE) and the Lecta Group conceptualized a new combined heat and power plant for a paper mill. The objective was clear. It had to produce a specific rangeof power and flexible ...
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Towards an European Fuel Cell Strategy
Head of Unit 'Energy Consumption Technology' At the onset of the Fourth Framework Programme for Community research and technological development including demonstration, a ten year fuel cell strategy for Europe was published in 1995 jointly by DG XII (Directorate General for Science, Research and Development) and DG XVII (Directorate General for Energy). The interest of the European Community ...
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4.2 MWe combined heat and power plant ceramic industry - Case Study
OWNER Pamesa Do Brasil LOCATION Suape - Recife, Brazil PRODUCT Centaur 50 Gas Turbine CUSTOMER VALUE Efficiency Pamesa Do Brasil is owned by Pamesa Espana, together with private Brazilian capital and is dedicated to the production, distribution and sale of ceramic floonng and glazed porcelain tiles. Pamesa's experience, high quality of products and constant technological innovation make it ...
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7.5 MWe Direct Drying and Cogeneration - Tissue Industry - Case Study
OWNER Lucart Group LOCATION Province of Lucca, Italy DIRECT DRYING DESIGN AND SUPPLY Valmet PRODUCT Taurus 70 Gas Turbine CUSTOMER VALUE Efficient and Sustainable Power The Lucart Castelnuovo di Garfagnana tissue mill is part of the Lucart Group, one of the first European paper and tissue producers. The mill has inaugurated its cogeneration system which is comprised of a Taurus™ 70 gas ...
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5MWe Combined Heat and Power Punt - Veterans Administration Hospital - Case Study
DEVELOPER/OWNER Sempra Energy LOCATION La Jolla, California, U.S.A. PRODUCT Mercury 50 Recuperated Gas Turbine CUSTOMER VALUE Efficient and Stable Power Under the United States Federal Energy Managers Program, the Veterans Administration (VA) Medical Center entered into an energy savings performance contract with Sempra Energy Services. The project required replacing two existing 1.2 MWe ...
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5MWe - Combined Heat and Power Plant - Veterans Administration Hospital - Case Study
DEVELOPER/OWNER Sempra Energy LOCATION La Jolla, California, U.S.A. PRODUCT Mercury 50 Recuperated Gas Turbine CUSTOMER VALUE Efficient and Stable Power Under the United States Federal Energy Managers Program, the Veterans Administration (VA) Medical Center entered into an energy savings performance contract with Sempra Energy Services. The project required replacing two existing 1.2 MWe ...
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