Rapid Non-Intrusive Gas Turbine Exhaust Temperature Measurement

2000 ◽  
Author(s):  
Michael. A. Welch ◽  
Moira Hilton ◽  
Chris W. Wilson
Keyword(s):  
Gas Turbine ◽  
Infrared Radiation ◽  
Gas Flow ◽  
Beam Steering ◽  
Black Body ◽  
Exhaust Temperature ◽  
Steering Mechanism ◽  
Ftir Spectrometer ◽  
Gas Turbine Exhaust ◽  
Analysis System

An integrated data collection and rapid analysis system was developed which produces temperature maps of gas turbine efflux using Fourier Transform Infrared (FTIR) spectroscopy. The system is purely passive, collecting the infrared radiation from the hot plume gases and requiring no contact with the plume or additional source of infrared radiation. A remotely controlled infrared beam steering mechanism traverses in 2 dimensions, parallel to the direction of exhaust gas flow, positioning the line of sight of a FTIR spectrometer across the plume. Project-specific software integrates the collection of infrared spectra by the FTIR spectrometer (interfacing with the commercial spectrometer software) and analysis of the data utilising a single PC. The plume gas temperatures are calculated by comparison of specific CO2 bands with the radiance of a black body source.

Multi-Stage Ejector Design and Numerical Simulation for Marine Gas Turbine

2014 ◽  
Vol 1078 ◽  
pp. 280-285 ◽  
Author(s):  
Tao Sun ◽  
Bo Wan ◽  
Chang Jiang Sun ◽  
Zheng Wei Ma
Keyword(s):  
Gas Turbine ◽  
Rational Design ◽  
Exhaust Temperature ◽  
Second Stage ◽  
Multi Stage ◽  
Gas Turbine Exhaust ◽  
Narrow Space ◽  
Independent Design ◽  
The Impact ◽  
Turbine Exhaust

With the continuous development of infrared-guided weapons, the survival of ship at sea faces increasingly challenges especially high-risk waters. The ship gas turbine exhaust ejector is the core component parts, charged with the task of reducing or even eliminating the infrared radiation signal of ship gas turbine exhaust systems. In the designing of exhaust ejector, structure forms of nozzle have a big influence on its ejector effect. Making a rational design of nozzle, which working in a narrow space, to reduce the exhaust temperature effectively while minimizing the impact of flow of gas turbine body has always been a focus and difficulty. In this article, a multistage ejector is designed by adding a second-stage ejector section based on an independent design of single-stage ejector.

Flow Guiding and Distributing Devices on the Exhaust Side of Stationary Gas Turbines

1990 ◽  
Vol 112 (1) ◽  
pp. 80-85
Author(s):  
F. Fleischer ◽  
C. Koerner ◽  
J. Mann
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Gas Flow ◽  
Flow Simulation ◽  
Exhaust System ◽  
Flow Distribution ◽  
Scale Model ◽  
Gas Turbine Exhaust ◽  
First Time ◽  
Turbine Exhaust

Following repeated cases of damage caused to exhaust silencers located directly beyond gas turbine diffusers, this paper reports on investigations carried out to determine possible remedies. In all instances, an uneven exhaust gas flow distribution was found. The company’s innovative approach to the problem involved constructing a scale model of a complete gas turbine exhaust system and using it for flow simulation purposes. It was established for the first time that, subject to certain conditions, the results of tests conducted on a model can be applied to the actual turbine exhaust system. It is shown that when an unfavorable duct arrangement might produce an uneven exhaust flow, scale models are useful in the development of suitable flow-distributing devices.

A Novel Approach of Retrofitting a Combined Cycle With Post Combustion CO2 Capture

2010 ◽  
Vol 133 (1) ◽  
Author(s):  
Klas Jonshagen ◽  
Nikolett Sipöcz ◽  
Magnus Genrup
Keyword(s):  
Gas Turbine ◽  
Carbon Capture ◽  
Gas Flow ◽  
Carbon Capture And Storage ◽  
Main Tool ◽  
Pressure Level ◽  
Combined Cycle ◽  
Pressurized Water ◽  
Novel Approach ◽  
Gas Turbine Exhaust

Most state-of-the-art natural gas-fired combined cycle (NGCC) plants are triple-pressure reheat cycles with efficiencies close to 60%. However, with carbon capture and storage, the efficiency will be penalized by almost 10% units. To limit the energy consumption for a carbon capture NGCC plant, exhaust gas recirculation (EGR) is necessary. Utilizing EGR increases the CO2 content in the gas turbine exhaust while it reduces the flue gas flow to be treated in the capture plant. Nevertheless, due to EGR, the gas turbine will experience a different media with different properties compared with the design case. This study looks into how the turbomachinery reacts to EGR. The work also discusses the potential of further improvements by utilizing pressurized water rather than extraction steam as the heat source for the CO2 stripper. The results show that the required low-pressure level should be elevated to a point close to the intermediate-pressure to achieve optimum efficiency, hence, one pressure level can be omitted. The main tool used for this study is an in-house off-design model based on fully dimensionless groups programmed in the commercially available heat and mass balance program IPSEPRO. The model is based on a GE 109FB machine with a triple-pressure reheat steam cycle.

Optimal Combined Cycle for CO2 Capture With EGR

2010 ◽  
Author(s):  
Klas Jonshagen ◽  
Nikolett Sipo¨cz ◽  
Magnus Genrup
Keyword(s):  
Gas Turbine ◽  
Carbon Capture ◽  
Gas Flow ◽  
Carbon Capture And Storage ◽  
Main Tool ◽  
Pressure Level ◽  
Combined Cycle ◽  
Pressurized Water ◽  
Reheat Steam ◽  
Gas Turbine Exhaust

Most state-of-the-art natural gas fired combined cycle (NGCC) plants are triple-pressure reheat cycles with efficiencies close to 60 percent. However, with carbon capture and storage, the efficiency will be penalized by almost 10 percent units. To limit the energy consumption for a carbon capture NGCC plant, exhaust gas recirculation (EGR) is necessary. Utilizing EGR increases the CO2 content in the gas turbine exhaust while it reduces the flue gas flow to be treated in the capture plant. Nevertheless, due to EGR, the gas turbine will experience a different media with different properties compared to the design case. This study looks into how the turbo machinery reacts to EGR. The work also discusses the potential of further improvements by utilizing pressurized water rather than extraction steam as the heat source for the CO2 stripper. The results show that the required low-pressure level should be elevated to a point close to the intermediate-pressure to achieve optimum efficiency; hence one pressure level can be omitted. The main tool used for this study is an in-house off-design model based on fully dimensionless groups programmed in the commercially-available heat and mass balance program IPSEpro. The model is based on a GE 109FB machine with a triple-pressure reheat steam cycle.

Development of a tunable diode laser sensor for measurements of gas turbine exhaust temperature

2005 ◽  
Vol 82 (3) ◽  
pp. 469-478 ◽  
Author(s):  
X. Liu ◽  
J.B. Jeffries ◽  
R.K. Hanson ◽  
K.M. Hinckley ◽  
M.A. Woodmansee
Keyword(s):  
Gas Turbine ◽  
Diode Laser ◽  
Tunable Diode Laser ◽  
Laser Sensor ◽  
Exhaust Temperature ◽  
Diode Laser Sensor ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

scholarly journals Gas Turbine Exhaust Heat Recovery by Hybrid Steam/Ternary Aqueous Immiscible Liquid Cycle

1984 ◽  
Author(s):  
B. M. Burnside
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Immiscible Liquid ◽  
Working Fluid ◽  
Exhaust Temperature ◽  
Boiling Points ◽  
Exhaust Heat ◽  
Gas Turbine Exhaust ◽  
Turbine Exhaust

The concept of the dual pressure steam/pure organic hybrid immiscible liquid cycle applied to recover exhaust heat from gas turbines is extended to include organic mixtures. Thermodynamics of the resulting ternary working fluid cycle is presented. For the cycle arrangement analysed it is calculated that the ternary steam/nonane/decane cycle with the organic very nonane rich produces about 2% more work than the corresponding all steam cycle for a typical gas turbine exhaust temperature. It is estimated that this advantage can be raised to about 4% by adding additional heaters at the stack end of the heat recovery generator. The analysis shows that it is unnecessary to use a pure alkane organic. A mixture containing up to about 5% of alkanes with higher boiling points than nonane is adequate.

scholarly journals Flow Guiding and Distributing Devices on the Exhaust Side of Stationary Gas Turbines

1989 ◽  
Author(s):  
Friedrich Fleischer ◽  
Christian Koerner ◽  
Juergen Mann
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Gas Flow ◽  
Flow Simulation ◽  
Exhaust System ◽  
Flow Distribution ◽  
Scale Model ◽  
Gas Turbine Exhaust ◽  
First Time ◽  
Turbine Exhaust

Following repeated cases of damage caused to exhaust silencers located directly beyond gas turbine diffusers, this paper reports on investigations carried out to determine possible remedies. In all instances, an uneven exhaust gas flow distribution was found to be present. The company’s innovative approach to the problem involved constructing a scale model of a complete gas turbine exhaust system and using it for flow simulation purposes. It was established for the first time that, subject to certain conditions, the results of tests conducted on a model can be applied to the actual turbine exhaust system. It is shown that when an unfavourable duct arrangement might produce an uneven exhaust flow, scale models are useful in the development of suitable flow-distributing devices.

Acceptance Criteria for Heat Recovery Steam Generators Behind Gas Turbines

1986 ◽  
Author(s):  
Akber Pasha
Keyword(s):  
Gas Turbine ◽  
Steam Generator ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Design Parameters ◽  
Heat Recovery Steam Generator ◽  
Exhaust Temperature ◽  
Input Parameters ◽  
Input Variables ◽  
Gas Turbine Exhaust

The design of a Heat Recovery Steam Generator behind a gas turbine depends upon various input parameters such as gas turbine exhaust flow, exhaust temperature, etc. Most of the input parameters are either measured with tolerances or calculated based on experimental correlations. The design of the heat recovery steam generator itself utilizes various correlations and empirical values. The errors or measurement tolerances in these variables affect the performance of the steam generator. This paper describes the various design parameters, the possible magnitude of errors in these parameters and the overall effect on the steam generator’s performance. By utilizing the information given in this paper, it is possible to develop a performance envelope based on the possible error margins of the input variables. The steam generator performance can be deemed acceptable if it is within this envelope.

Gas Turbine Combined Cycle Dynamic Simulation: A Physics Based Simple Approach

2013 ◽  
Vol 136 (1) ◽  
Author(s):  
S. Can Gülen ◽  
Kihyung Kim
Keyword(s):  
Gas Turbine ◽  
Combined Cycle ◽  
Ease Of Use ◽  
Design And Optimization ◽  
Exhaust Temperature ◽  
Rapid Calculation ◽  
Solution Methods ◽  
Gas Turbine Exhaust ◽  
Computational Platform ◽  
Turbine Exhaust

This paper describes a simplified physics-based method derived from fundamental relationships to accurately predict the dynamic response of the steam bottoming cycle of a combined cycle power plant to the changes in gas turbine exhaust temperature and flow rate. The method offers two advantages: (1) rapid calculation of various modes of combined cycle transient performance such as startup, shutdown, and load ramps for conceptual design and optimization studies, and (2) transparency of governing principles and solution methods for ease of use by a wider range of practitioners. Thus, the method facilitates better understanding and dissemination of said studies. All requisite formulas and methods described in the paper are readily amenable to implementation on a computational platform of the reader's choice.

Study of an Experiment System and Flow Measurement of Group Nozzles in a Heavy-Duty Gas Turbine

2011 ◽  
Vol 66-68 ◽  
pp. 311-314
Author(s):  
Xu Li ◽  
Kai Liu
Keyword(s):  
Gas Turbine ◽  
Gas Flow ◽  
System Control ◽  
Gas Flows ◽  
Heavy Duty ◽  
Flow Meter ◽  
Experiment System ◽  
System Data ◽  
Heavy Duty Gas Turbine ◽  
Analysis System

Study of experiment system and experimental investigation results of the group nozzles in a heavy-duty gas turbine are expatiated. In order to measure gas flows of every flow branch in the group nozzles, flow meter of type SH-1 is specifically developed, The measure system, control system, data display system, data acquisition analysis system subtly combine, the SH-1 gas flow test equipment and these measured flows data are precise, stable, good reproducibility, the errors of the measuring are less 0.5%. Using SH-1 flow meter, gas flows of Ⅲ,Ⅳ,Ⅴbranches are precisely measured, the combustion testing of the group nozzles in the flame tube is made, its performance is satisfied with the design requirements, these demonstrate: the testing results by using SH-1 flowmeter are reliable, stable.

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