scholarly journals A Gas Turbine “CO” Boiler Installation; Economic and Thermodynamic Analysis

1961 ◽  
Author(s):  
Charles Bultzo
Keyword(s):  
Steam Turbine ◽  
Gas Turbine ◽  
Thermodynamic Analysis ◽  
Flue Gas ◽  
Gas Turbine Exhaust ◽  
Turbine Installation ◽  
Turbine Drive ◽  
Turbine Exhaust

The paper presents a detailed thermodynamic analysis of a combined gas-turbine “CO” boiler installation. Regenerator flue gas with 9 per cent CO is burned to CO2 using gas-turbine exhaust which contains 17 per cent O2. In addition, the first costs of a steam-turbine drive is compared to that of the gas-turbine installation. The summary is a comparison of the anticipated efficiency with those being experienced.

Luxury Liners Go Green

1998 ◽  
Vol 120 (07) ◽  
pp. 72-73 ◽  
Author(s):  
Michael Valent
Keyword(s):  
Steam Turbine ◽  
Gas Turbine ◽  
Gas Turbines ◽  
First Century ◽  
System A ◽  
Cruise Ships ◽  
Engine Room ◽  
Electric Drive System ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

This article reviews that twenty-first century passengers on the Royal Caribbean International and Celebrity Cruises are set to make history in style. Up to six of Royal Caribbean’s Voyager- and Millennium-class vessels will be the first cruise ships ever powered by General Electric’s gas turbines. In addition to reducing engine-room noise and vibration and cutting emissions, this propulsion system—a departure from the traditional diesel engine—will make it possible for ships to set sail with a reduced maintenance crew and smaller parts inventory. Royal Caribbean International currently operates a fleet of 12 ships. In the Royal Caribbean application, the GE gas turbine will be used to drive generators that will provide electricity to propeller motors. The steam turbine will recover heat from the gas turbine exhaust for other uses. This combined gas turbine and steam turbine integrated electric drive system represents a departure from diesel engines in more than one respect.

scholarly journals Design and Operating Experiences With Gas Turbine Combined Cycle Units

1971 ◽  
Author(s):  
R. W. Jones ◽  
A. C. Shoults
Keyword(s):  
Steam Turbine ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Combined Cycle ◽  
Economic Factors ◽  
Chemical Company ◽  
Gas Turbine Exhaust ◽  
Selection Of ◽  
Turbine Exhaust

This paper presents details of three large gas turbine installations in the Freeport, Texas, power plants of the Dow Chemical Company. The general plant layout, integration of useful outputs, economic factors leading to the selection of these units, and experiences during startup and operation will be reviewed. All three units operate with supercharging fan, evaporative cooler, and static excitation. Two of the installations are nearly identical 32,000-kw gas turbines operating in a combined cycle with a supplementary fired 1,500,000-lb/hr boiler and a 50,000-kw noncondensing steam turbine. The other installation is a 43,000-kw gas turbine and a 20,000-kw starter-helper steam turbine on the same shaft. The gas turbine exhaust is used to supply heated feedwater for four existing boilers.

scholarly journals Gas-Steam Power Generation

1960 ◽  
Author(s):  
P. F. Martinuzzi
Keyword(s):  
Power Generation ◽  
Steam Turbine ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Nuclear Reactors ◽  
Closed Cycle ◽  
Steam Power ◽  
Operational Characteristics ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

The combination of a gas turbine with a steam turbine driven by steam produced in a generator heated by the gas-turbine exhaust is studied. The field of application of such a gas-steam power plant is examined, as well as the best operational characteristics of the combination. The special features of closed-cycle gas turbines, particularly of the type used in conjunction with gas-cooled, high-temperature nuclear reactors, are shown to give considerable advantages when combined with a steam turbine.

Influence of Gas Turbine Exhaust CO2 Concentration on the Performance of Post Combustion Carbon Capture Plant

2015 ◽  
Author(s):  
Muhammad Akram ◽  
Simon Blakey ◽  
Mohamed Pourkashanian
Keyword(s):  
Gas Turbine ◽  
Flue Gas ◽  
Power Output ◽  
Carbon Capture ◽  
Co2 Concentration ◽  
Research Centre ◽  
Capture Process ◽  
Energy Penalty ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

As a result of increased concern over Greenhouse Gas emissions, capture of CO2 from stationary power sources is a topic under discussion throughout the world. The most developed technology for the application is post combustion carbon capture using liquid solvents. However, due to very low concentration of CO2 in the gas turbine emitted flue gas, energy penalty caused by the capture process is relatively high. One of the methods to increase CO2 concentration is the recycling of flue gas (also termed as EGR) in which part of the flue gas is sent back to join the air stream entering the compressor. This paper presents results of an experimental campaign carried out at the Pilot Scale Advanced Capture Technology (PACT) facilities of the UK Carbon Capture and Storage Research Centre (UKCCSRC). A Turbec T100 microturbine of 100kWe is integrated with a post combustion carbon capture plant of 1TPD (Ton per day) CO2 capture capacity. The microturbine is very lean combustion system and produces a flue gas having only 1.5% CO2. Therefore, in order to simulate EGR on industrial gas turbines which produce around 4–5% CO2 in the exhaust stream, CO2 from a cryogenic storage tank was injected into the slip stream of the gas turbine exhaust. The impact of different CO2 concentrations (representing EGR) on the post combustion carbon capture process is experimentally evaluated. It is observed that the energy penalty caused by the capture process is considerably reduced at higher CO2 concentration in the absorber inlet flue gas stream. EGR also has a negative impact on the produced power from the gas turbine as well as the combustion process. However, it has positive impact on the power output from steam turbine. Optimum recycle ratio for maximum power output from combined cycle gas turbine is discussed. Performance of the absorption column as indicated by rich and lean solvent CO2 loadings is discussed. Moreover, emissions of solvent and some of the degradation products with the exhaust gas from the capture plant are monitored and reported.

Performance Entitlement of Supercritical Steam Bottoming Cycle

2013 ◽  
Vol 135 (12) ◽  
Author(s):  
S. Can Gülen
Keyword(s):  
Steam Turbine ◽  
Gas Turbine ◽  
Power Plants ◽  
Performance Enhancement ◽  
Combined Cycle ◽  
Cycle Systems ◽  
Steam Boilers ◽  
Potential Impact ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

A supercritical steam bottoming cycle has been proposed as a performance enhancement option for gas turbine combined cycle power plants. The technology has been widely used in coal-fired steam turbine power plants since the 1950s and can be considered a mature technology. Its application to the gas-fired combined cycle systems presents unique design challenges due to the much lower gas temperatures (i.e., 650 °C at the gas turbine exhaust vis-à-vis 2000 °C in fossil fuel-fired steam boilers). Thus, the potential impact of the supercritical steam conditions is hampered to the point of economic infeasibility. This technical brief draws upon the second-law based exergy concept to rigorously quantify the performance entitlement of a supercritical high-pressure boiler section in a heat recovery steam generator utilizing the exhaust of a gas turbine to generate steam for power generation in a steam turbine.

Acoustic Characteristics of a Gas Turbine Exhaust Model

1974 ◽  
Vol 96 (3) ◽  
pp. 181-184 ◽  
Author(s):  
J. R. Cummins
Keyword(s):  
Gas Turbine ◽  
Acoustic Radiation ◽  
Flow Path ◽  
Scale Model ◽  
Temperature Ratio ◽  
Acoustic Characteristics ◽  
Gas Turbine Exhaust ◽  
Acoustical Data ◽  
Turbine Exhaust

To investigate the sources of acoustic radiation from a gas turbine exhaust, a one-seventh scale model has been constructed. The model geometrically scales the flow path downstream of the rotating parts including support struts and turning vanes. A discussion and comparison of different kinds of aerodynamic and acoustic scaling techniques are given. The effect of the temperature ratio between model and prototype is found to be an important parameter in comparing acoustical data.

Prediction of Pressure Rise in a Gas Turbine Exhaust Duct Under Flameout Scenarios While Operating On Hydrogen and Natural Gas Blends

2021 ◽  
Author(s):  
Orlando Ugarte ◽  
Suresh Menon ◽  
Wayne Rattigan ◽  
Paul Winstanley ◽  
Priyank Saxena ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Combustion Process ◽  
Pressure Rise ◽  
Combustion Model ◽  
Computational Domain ◽  
Cfd Model ◽  
Exhaust Duct ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

Abstract In recent years, there is a growing interest in blending hydrogen with natural gas fuels to produce low carbon electricity. It is important to evaluate the safety of gas turbine packages under these conditions, such as late-light off and flameout scenarios. However, the assessment of the safety risks by performing experiments in full-scale exhaust ducts is a very expensive and, potentially, risky endeavor. Computational simulations using a high fidelity CFD model provide a cost-effective way of assessing the safety risk. In this study, a computational model is implemented to perform three dimensional, compressible and unsteady simulations of reacting flows in a gas turbine exhaust duct. Computational results were validated against data obtained at the simulated conditions in a representative geometry. Due to the enormous size of the geometry, special attention was given to the discretization of the computational domain and the combustion model. Results show that CFD model predicts main features of the pressure rise driven by the combustion process. The peak pressures obtained computationally and experimentally differed in 20%. This difference increased up to 45% by reducing the preheated inflow conditions. The effects of rig geometry and flow conditions on the accuracy of the CFD model are discussed.

scholarly journals General Design Considerations for Gas Turbine Waste Heat Steam Generators

1968 ◽  
Author(s):  
W. V. Hambleton
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat ◽  
Steam Generation ◽  
Steam Generators ◽  
Design Considerations ◽  
Exhaust Heat ◽  
Gas Turbine Exhaust ◽  
Exhaust Heat Recovery ◽  
Turbine Exhaust

This paper represents a study of the overall problems encountered in large gas turbine exhaust heat recovery systems. A number of specific installations are described, including systems recovering heat in other than the conventional form of steam generation.

A Fluidic Technique for Measuring the Average Temperature in a Gas Turbine Exhaust Duct

1968 ◽  
Vol 90 (3) ◽  
pp. 265-270 ◽  
Author(s):  
C. G. Ringwall ◽  
L. R. Kelley
Keyword(s):  
Gas Turbine ◽  
Wave Velocity ◽  
Test Data ◽  
Output Pressure ◽  
Average Temperature ◽  
Phase Discrimination ◽  
Exhaust Duct ◽  
Average Wave ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

Circuit concepts and test data for a fluidic system to sense the average temperature in a gas turbine exhaust duct are presented. Phase discrimination techniques are used to sense the average wave velocity in a long tube and to produce an output pressure differential proportional to temperature error.

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