gas turbine system Articles
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Exergy analysis of gas-turbine systems with high fogging compression
Gas-turbine cycles with high fogging compression could offer enhanced efficiency and low complexity. Whereas compression power and heat rates decrease when small amounts of water (up to 2% of air flow by mass) are injected at the machine inlet, increased injection amounts could allow implementation of regeneration, further decreasing the heat rate. In this study, an exergy analysis is carried out ...
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An appraisal method of exergy cost minimisation for co-generation systems
This study introduces an exergy cost-minimisation appraisal method for a simple gas turbine co-generation system. Optimisation of a gas turbine co-generation system of the electric output class of 17 MW is examined for a variety of turbine inlet temperatures of 950–1,300°C. An optimum value of the turbine inlet temperature exists for exergy cost minimisation and is estimated to be 1,200°C since ...
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NOx formation by steam injection using detailed chemical kinetics
In order to improve thermal efficiency of gas turbine system and better control NOx emission, the injection of steam into a gas turbine combustor has been employed. This study has used both chemical equilibrium calculations and the counterflow diffusion flame calculations of methane-air flame aiming at the elucidation of the NOx reduction mechanism due to the steam injection. The influence of the ...
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Exergy analysis of a gas turbine system with evaporative cooling at compressor inlet
This paper deals with the thermodynamically modelled gas turbine consisting of Media Evaporative Cooling System (MECS) at compressor inlet for investigating the generated power, second law efficiency, and entropy generation number. The parametric study using this model shows effects of ambient conditions, compressor and turbine inlet temperature, and pressure ratio on the gas turbine power and ...
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Sensitivity analysis of component efficiencies on performance of a gas turbine cogeneration system
The performance of a 1000 kW gas-turbine cogeneration system was evaluated in terms of performance measures, such as net power, exergy efficiency of the system, and the unit costs of electricity and steam. The efficiencies of some components that have a significant affect on the performance were taken as physical variables. Sensitivity was evaluated by introducing parameters, defined as the ratio ...
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Understanding and improving energy conversion systems with the aid of exergy–based methods
Exergy–based methods are powerful tools for developing, evaluating and improving an energy conversion system. Conventional exergy–based analyses have limitations, which are significantly reduced by the so–called advanced analyses. The latter evaluate: (a) the interactions among components of the overall system, and (b) the real potential for improving a system component. The main objective of ...
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Sensitivity analysis and thermo-economic optimisation of Steam Injected Gas Turbine cycle design parameters
The purpose of the present work is to apply thermo-economic concepts to a Steam Injected Gas Turbine (STIG) electricity generation system and optimise it to indicate its economical advantages over a simple gas turbine. The system incorporates a combustion chamber, gas turbine, a compressor and a Heat Recovery Steam Generator (HRSG). A detailed sensitivity analysis was also performed to examine ...
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The effect of elevated inlet air temperature and relative humidity on Gas Turbine cogeneration system: exergy assessment
This research aims to quantify the exergy destructions of Gas Turbine (GT) cogeneration system under different inlet air temperatures and humidity. Three different cogeneration schemes were examined in this research: conventional GT, GT-Single Pressure HRSG and GT-Dual Pressure HRSG. A parametric study was carried out in terms of exergy destruction and second-law efficiency. The exergy ...
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Thermodynamic analysis of an integrated gasification combined cycle power plant: effect of nitrogen supply on system performance
A comprehensive thermodynamic analysis of a conceptual integrated coal gasification combined cycle power plant is presented. Energy and exergy efficiencies and exergy destructions of each sub–unit are calculated. The effect of nitrogen, which is supplied from the Air Separation Unit (ASU) of the gasification unit to the combustion chamber of the gas turbine (GT) cycle, on system performance is ...
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11.4 MWe - Landfill Gas Fuel Simple Cycle Power Plant Charlotte Motor Speedway Landfill - Case Study
OWNER/OPERATOR Fortistar END USER Concord Energy LLC PROJECT ENGINEERING SCS Engineers CONSTRUCTION MANAGEMENT McCarthy & Smith, Inc. PRODUCT Two (2) 5.7 MWe Taurus 60 Gas Turbine Generator Sets CUSTOMER VALUE High Availability and Local Renewable Energy Supply The Concord Energy facility at the Charlotte Motor Speedway Landfill in North Carolina helps fulfill a regional need for ...
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Exergoeconomic optimisation of steam power plant
The second law of thermodynamics combined with economics forms a powerful tool for systematic analysis and assessment of energy systems. This paper presents an exergoeconomic optimisation of 50 MW steam turbine power plant associated with a large fertiliser industrial unit through Thermoeconomic Evaluation and Optimisation (TEO) method, and identifies the losses in various components. As the ...
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Brigham Young University Rexburg, Idaho - 5.7 MW Gas Turbine CHP System - Case Study
Quick Facts LOCATION: Rexburg, Idaho MARKET SECTOR: University FACILITY SIZE: Educates 34,000 students FACILITY Total Electrical Energy Production: 38.4 million kWh/year EQUIPMENT: 5.7 MW Solar Taurus 60 gas turbine with 50,000 lbs/hour heat recovery steam generator (HRSG) FUEL: Natural gas-fired, with dual fuel oil-firing capability for both the gas turbine and HRSG USE OF THERMAL ENERGY: Steam ...
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24 MWe - Natural Gas Fuel Combined Heat and Power Plant - University of Illinois Hospital - Case Study
OWNER University of Illinois Hospital PROJECT ENGINEERING EME, LLC ENGINEERING, PROCUREMENT AND CONSTRUCTION Solar Turbines Incorporated PRODUCT Three (3) Taurus 70 Natural Gas Turbine Generator Gets With Heat Recovery Boilers CUSTOMER VALUE Power Reliability, Energy Savings, Reduced Emissions, Island Mode Operation A major hospital that treats critically ill patients cannot afford power ...
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Versatility of Byproducts from a Plastic Pyrolysis Plant for Diverse Industrial Applications
At the heart of a plastic pyrolysis plant lies the process of pyrolysis, wherein plastic waste is subjected to high temperatures in the absence of oxygen, leading to the breakdown of complex hydrocarbons into simpler compounds. This thermochemical transformation yields a trifecta of valuable byproducts: pyrolysis oil, syngas, and carbon black. Pyrolysis oil, often referred to as bio-oil or ...
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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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Gas turbine performance enhancement by intake air cooling
In this work, the influence of air cooling intake on the gas turbine performance is presented. The proposed system, together with the gas turbine, is described. A mathematical model of ACIGT (Air Cooling Intake Gas Turbine) is derived and formulated in dimensionless form from which the constraint multivariable optimisation problem was formulated. To demonstrate the effectiveness of the proposed ...
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More Power & Efficiency on a 7FA in the Middle East at 50°C Case Study
Powerphase collaborated with the Tamimi Group of Companies and Saudi Electricity Company (SEC) to demonstrate Turbophase system’s ability to boost F-class gas turbine (GT) power output at the high ambient air temperatures that Saudi Arabian summers are known for. Besides having hot summers, Saudi Arabian labor costs are high such that any technology that reduces plant downtime can help ...
By Powerphase
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More Power & Flexibility Lead to Profits Case Study
In 2014, Powerphase installed a Turbophase system consisting of two Turbophase modules, at a cogeneration plant in the U.S. The Morris Cogen plant is a 177 MW combined-cycle gas facility located within the Equistar Chemicals petrochemical plant in Morris, IL. The Morris plant has a single pressure steam turbine (ST) (625 psig/750°F) rated at 57 MW, and three GE MS6001B, PG6561 gas turbines ...
By Powerphase
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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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Performance enhancement of GT-ST power plant with inlet air cooling using lithium bromide/water vapour absorption refrigeration system
Performance improvement techniques in power generation systems especially in gas turbine-steam turbine (GT-ST) combined cycle (CC) power plants by compressor inlet air cooling prove to be much improvising. In this work, the performance enhancement of CC power plant by inlet air cooling method using lithium bromide-water (LiBr/H2O) absorption refrigeration system powered by waste heat from heat ...
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