Validation of measured data on F/A ratio and turbine inlet temperature with optimal estimation to enhance the reliability on a full-scale gas turbine combustion test for IGCC

Park, Seik; Shin, Jugon; Morishita, Mitsuhiro; Saitoh, Toshihiko; Choi, Gyung‐Min; Tanahashi, Mamoru

doi:10.1016/j.ijhydene.2019.03.233

Cited by 5 publications

(3 citation statements)

References 28 publications

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“…In the actual GT combustor application, the combustor outlet temperature (also known as the turbine inlet temperature) must be kept at the desired temperature to preserve the load and the hazard at bay [26]. When the temperature exceeds the specified temperature for the specific GT, it has the potential to damage the turbine material because it was built to accommodate for the specific turbine inlet temperature [27,28]. As a result of the current findings, flowrate tuning is required to include more than 10 % H 2 in the GT combustor in order to reduce the flame temperature to its baseline/requisite temperature.…”

Section: Resultsmentioning

confidence: 99%

Hydrogen-Enriched Natural Gas Swirling Flame Characteristics: A Numerical Analysis

Rahman

Shahril

Yusup

2022

CFDL

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Increasing the amount of hydrogen (H2) in natural gas mixtures contributes to gas turbine (GT) decarbonisation initiatives. Hence, the swirling flame characteristics of natural gas mixtures with H2 are investigated in the current work using a numerical assessment of a single swirl burner, which is extensively employed in GT combustors. The baseline numerical and experimental cases pertained to natural gas compositions largely consisting of methane (CH4). The results show that the numerical model adequately describes the swirling component of the flame observed in the experiment. Altogether, the findings show that hydroxyl (OH) radical levels increase in H2-enriched CH4 flames, implying that greater OH pools are responsible for the change in flame structure caused by considerable H2 addition. The addition of 10 % H2 is predicted to raise the peak flame temperature by 4 % compared to the baseline CH4 flame. Therefore, adding 10 % H2 into a GT combustor without any flowrate tuning raises the risk of turbine material deterioration and increased thermal NOx emission. Due to the lower volumetric Lower Heating Value (LHV) of H2, which needs a higher volumetric fuel flow rate than burning natural gas/CH4 at the same thermal output, the addition of 2 % H2 is predicted to reduce the peak flame temperature by 4 % compared to the baseline CH4 flame. Hence, if 2 % H2 is fed into a GT combustor without any flowrate tuning, the required load may not be obtained. When compared to the baseline CH4 case, the addition of 5 % H2 is predicted to provide almost identical peak flame temperature, which can be postulated that the addition of 5 % H2 can produce roughly the same peak flame temperature as the pure CH4 flame because the Wobbe Index is comparable. Therefore, it reveals that incorporating 5 % H2 in the natural gas-fired GT combustor with nearly no modification is viable. More research, however, is required to fully capture the flame structure and strain for assessing transient-related phenomena such as flashback and blow off by raising the H2 proportion and utilising a higher precision turbulence model.

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Section: Resultsmentioning

confidence: 99%

Hydrogen-Enriched Natural Gas Swirling Flame Characteristics: A Numerical Analysis

Rahman

Shahril

Yusup

2022

CFDL

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“…Hence, the probability density function f (t) is calculated by the following expression [21,34]: where η is the scale parameter, y is the location parameter and β is the shape parameter of the Weibull distribution. The Weibull paper plot, shown in Figure 24, allows to graphically read the Weibull distribution parameters, in the case where the parameter y is zero.…”

Section: Validation Of Obtained Resultsmentioning

confidence: 99%

“…In industrial reality, the analysis and evaluation of gas turbine reliability approaches is used to avoid failures and damage, with the aim of increasing their availability and productivity [17][18][19][20][21]. These types of machines are used in many gas compressor stations in the oil and gas industry.…”

Section: Two Shafts Gas Turbine Solar Titan 130mentioning

confidence: 99%

Reliability Modeling Using an Adaptive Neuro-Fuzzy Inference System: Gas Turbine Application

Hadroug

Hafaifa

Iratni

et al. 2021

Fuzzy Information and Engineering

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Recently, the development of the industry requires monitoring and follow-up of the working conditions of the facilities, to determine the reliability, availability, and durability of these systems, for objectively estimating the service life of these installations with reduced maintenance costs. In this sense, this work proposes a novel approach to reliability modeling, to determine failure assessment indicators based on an adaptive neuro-fuzzy inference system applied on a gas turbine. This is in order to describe the behavior of this rotating machine and to estimate their operating safety parameters, to improve its performance in terms of maintainability, availability, and operational safety with effective durability. The application of fuzzy rules to reliability estimation with practical implementations is innovative, making it possible to provide solutions to problems of reliable identification of gas turbines in their complex operating environments.

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Effect of H2 enrichment ratio and N2/CO2 dilution on swirl-stabilized partially premixed H2/CH4/C3H8 SNG combustion

Joo

Kwak

Yoon

2020

International Journal of Hydrogen Energy

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Validation of measured data on F/A ratio and turbine inlet temperature with optimal estimation to enhance the reliability on a full-scale gas turbine combustion test for IGCC

Cited by 5 publications

References 28 publications

Hydrogen-Enriched Natural Gas Swirling Flame Characteristics: A Numerical Analysis

Hydrogen-Enriched Natural Gas Swirling Flame Characteristics: A Numerical Analysis

Reliability Modeling Using an Adaptive Neuro-Fuzzy Inference System: Gas Turbine Application

Effect of H2 enrichment ratio and N2/CO2 dilution on swirl-stabilized partially premixed H2/CH4/C3H8 SNG combustion

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