Takeoff Performance Analysis Based on Aeroengine EGT Trend Monitoring and Control

2014 ◽  
Vol 680 ◽  
pp. 307-310
Author(s):  
Fu Qiang ◽  
Fan Ding
Keyword(s):  
Performance Analysis ◽  
Performance Prediction ◽  
Statistical Data ◽  
Exhaust Gas ◽  
Monitoring And Control ◽  
Gas Temperature ◽  
Trend Monitoring ◽  
Exhaust Gas Temperature ◽  
And Control

Exhaust gas temperature (EGT) is an important parameter for aeroengine. By monitoring the change in trend, can effectively predict the engine take-off performance. The characteristics of takeoff EGT were introdeced firstly. Two methods of estimating takeoff performance were analyzed subsequently. According to the statistical data, EGT can be used for takeoff performance prediction.

scholarly journals Dynamic performance simulation and control of an aeroengine by using NARX models

2019 ◽  
Vol 304 ◽  
pp. 03005
Author(s):  
Maria Grazia De Giorgi ◽  
Antonio Ficarella ◽  
Marco Quarta
Keyword(s):  
Dynamic Performance ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
Transient Behaviour ◽  
Fuel Flow ◽  
Narx Models ◽  
Model Training ◽  
Exhaust Gas Temperature ◽  
And Control ◽  
Transient Operations

Dynamic aeroengine model plays a key role in the design of engine control systems. Moreover, modelling of the engine using performance simulations is an important step in the design process in order to reduce costs, decrease risks and shortening development period. Parameters such as engine spool speeds, vibration, oil temperature, exhaust gas temperature, and fuel flow are often used to estimate performance in gas turbine engines. In this study, two artificial neural network methods were used for the prediction, under transient operations, of one of the most important engine parameters, the Exhaust Gas Temperature (EGT). The data used for model training are time series datasets of several different flight missions, which have been created using a gas path analysis, and that allow to simulate the engine transient behaviour. The study faces the challenge of setting up a robust and reliable Nonlinear Input-Output (NIO) and a Nonlinear AutoRegressive with eXog nous inputs (NARX) models, by means of a good selection of training. At the end of the study, two network that predicts the engine EGT in transient operations with the smallest error have been identified.

Performance Analysis of a New Type Economizer System for Active Control of Exhaust Flue Gas Temperature in a 600 MW Power Plant

2017 ◽  
Author(s):  
Pengcheng Xiao ◽  
Jizhou Wang ◽  
Yanping Zhang
Keyword(s):  
Performance Analysis ◽  
Active Control ◽  
Flue Gas ◽  
Electrostatic Precipitator ◽  
Calculation Model ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
New Type ◽  
Exhaust Gas Temperature ◽  
Gas Ratio

A new type of bypass staged economizer system is presented in this paper. The calculation model of the bypass staged economizer and ordinary LPE were established based on a 600 MW unit. The performance analysis for important operating parameters of the presented economizer system such as exhaust gas temperature and bypass flue gas ratio are carried out. Simulation results showed that, when the scheme of the bypass staged economizer was adopted, the temperature of the flue gas entering the electrostatic precipitator (ESP) can be reduced to 95°C, which can greatly improve unit efficiency, reduce standard coal equivalent (SCE) consumption by 2.8g/kWh. Compared with the traditional LPE, it can reduce SCE consumption by 1.59g/kWh. In addition, the technology can also achieve the active control of the exhaust flue gas temperature by changing the bypass flue gas ratio. The different flue gas temperatures correspond to different bypass flue gas ratios. And the optimum bypass flue gas ratio was calculated in different exhaust gas temperature conditions.

Lime kiln conversion from coke to natural gas operation – an option in direction of sustainable energy

2020 ◽  
pp. 431-434
Author(s):  
Oliver Arndt
Keyword(s):  
Natural Gas ◽  
New Technology ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
Gaseous Fuels ◽  
Lime Kiln ◽  
Lime Kilns ◽  
Co2 Balance ◽  
Exhaust Gas Temperature

This paper deals with the conversion of coke fired lime kilns to gas and the conclusions drawn from the completed projects. The paper presents (1) the decision process associated with the adoption of the new technology, (2) the necessary steps of the conversion, (3) the experiences and issues which occurred during the first campaign, (4) the impacts on the beet sugar factory (i.e. on the CO2 balance and exhaust gas temperature), (5) the long term impressions and capabilities of several campaigns of operation, (6) the details of available technologies and (7) additional benefits that would justify a conversion from coke to natural gas operation on existing lime kilns. (8) Forecast view to develop systems usable for alternative gaseous fuels (e.g. biogas).

scholarly journals Multivariate statistical data analysis of cell‐free protein synthesis toward monitoring and control

AIChE Journal ◽  
2021 ◽  
Author(s):  
Carlos A. Duran‐Villalobos ◽  
Olotu Ogonah ◽  
Beatrice Melinek ◽  
Daniel G. Bracewell ◽  
Trevor Hallam ◽  
...  
Keyword(s):  
Protein Synthesis ◽  
Data Analysis ◽  
Statistical Data ◽  
Monitoring And Control ◽  
Statistical Data Analysis ◽  
Multivariate Statistical ◽  
Free Protein ◽  
And Control ◽  
Cell Free Protein Synthesis

scholarly journals Exhaust Gas Temperature Measurements in Diagnostics of Turbocharged Marine Internal Combustion Engines Part I Standard Measurements

2015 ◽  
Vol 22 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Zbigniew Korczewski
Keyword(s):  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Technical Condition ◽  
Temperature Measurements ◽  
Injection System ◽  
Exhaust Gas ◽  
Combustion Engines ◽  
Gas Temperature ◽  
Measuring Signal ◽  
Exhaust Gas Temperature

Abstract The article discusses the problem of diagnostic informativeness of exhaust gas temperature measurements in turbocharged marine internal combustion engines. Theoretical principles of the process of exhaust gas flow in turbocharger inlet channels are analysed in its dynamic and energetic aspects. Diagnostic parameters are defined which enable to formulate general evaluation of technical condition of the engine based on standard online measurements of the exhaust gas temperature. A proposal is made to extend the parametric methods of diagnosing workspaces in turbocharged marine engines by analysing time-histories of enthalpy changes of the exhaust gas flowing to the turbocompressor turbine. Such a time-history can be worked out based on dynamic measurements of the exhaust gas temperature, performed using a specially designed sheathed thermocouple. The first part of the article discusses possibilities to perform diagnostic inference about technical condition of a marine engine with pulse turbocharging system based on standard measurements of exhaust gas temperature in characteristic control cross-sections of its thermal and flow system. Selected metrological issues of online exhaust gas temperature measurements in those engines are discusses in detail, with special attention being focused on the observed disturbances and thermodynamic interpretation of the recorded measuring signal. Diagnostic informativeness of the exhaust gas temperature measurements performed in steady-state conditions of engine operation is analysed in the context of possible evaluations of technical condition of the engine workspaces, the injection system, and the fuel delivery process.

Energetic Based Organic Fluid Selection for a Solid Oxide Fuel Cell-Organic Rankine Cycle Combined System

2012 ◽  
Vol 622-623 ◽  
pp. 1162-1167
Author(s):  
Han Fei Tuo
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Heat Recovery ◽  
Waste Heat ◽  
Solid Oxide ◽  
Exhaust Gas ◽  
Oxide Fuel ◽  
Gas Temperature ◽  
Selection For ◽  
Exhaust Gas Temperature

In this study, energetic based fluid selection for a solid oxide fuel cell-organic rankine combined power system is investigated. 9 dry organic fluids with varied critical temperatures are chosen and their corresponding ORC cycle performances are evaluated at different turbine inlet temperatures and exhaust gas temperature (waste heat source) from the upper cycle. It is found that actual ORC cycle efficiency for each fluid strongly depends on the waste heat recovery performance of the heat recovery vapor generator. Exhaust gas temperature determines the optimal fluid which yields the highest efficiency.

Experimental Study of Natural Gas Fuel Temperature Influence on Radiation Enhancement and Emission

2010 ◽  
Author(s):  
S. Mohammad Javadi ◽  
Pourya Nikoueeyan ◽  
Mohammad Moghiman ◽  
M. Ebrahim Feyz
Keyword(s):  
Radiation Intensity ◽  
Flame Temperature ◽  
Photovoltaic Module ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
Fuel Temperature ◽  
Flame Radiation ◽  
Exhaust Gases ◽  
No Formation ◽  
Exhaust Gas Temperature

The enhancement of the flame radiation in gas fueled burners not only improves the thermal efficiency, but also can suppress the rate of NO emission due to reducing the flame temperature. In this experimental investigation, the effect of inlet gas temperature on the flame radiation intensity and the rate of NO formation are studied. To serve this aim, with increasing the temperature of inlet methane to the burner up to 310°C, the variations of CO and NO level in exhaust gases and also the exhaust gas temperature are recorded by gas analyzer device. In each case, the flame radiation intensity was also measured by a photovoltaic module. The results revealed that by increasing the inlet gas temperature up to 250°C, the NO concentration and the exhaust gases temperature are raising. But when the inlet gas temperature exceeds from 250°C and reaches to 310°C, the flame luminosity gradually increases which results in 70 percent growth in flame radiation and 10 percent drop in exhaust gas temperature. The results of the preheating of inlet air also show the same behavior.

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