The effects of internal leakage on the performance of a micro gas turbine

Kim, Min Jae; Kim, Jeong-Ho; Kim, Tong Seop

doi:10.1016/j.apenergy.2017.12.029

Cited by 36 publications

(17 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 1 shows the structure of the virtual gas turbine, which was made using the in-house program coded in MATLAB R2019b, MathWorks, Natick, MA, USA [31]. The program was already verified in previous studies and used in various performance simulations [32][33][34]. Figure 2 shows the configuration of the gas turbine for the simulation, which consists of inlet and outlet ducts, a compressor, a combustor, a turbine, and a shaft.…”

Section: Overviewmentioning

confidence: 99%

Advanced Gas Turbine Control Logic Using Black Box Models for Enhancing Operational Flexibility and Stability

Moon

Kim

2020

Energies

Self Cite

View full text Add to dashboard Cite

In recent years, the importance of operational flexibility has increased for gas turbines that can stably operate under various operation conditions. This study proposes advanced control logic using black box models based on an artificial neural network. The goals are to enhance the operational flexibility by increasing the ramp rate and to enhance the operational stability by overcoming the limitation of conventional schedule-based control. By applying the advanced control logic, the turbine inlet temperature (TIT) and turbine exhaust temperature (TET) can be maintained at the optimal values, resulting in efficiency improvement by 0.35%. Furthermore, the maximum deviation of the rotational speed was reduced from 0.22% to 0.061%, and the maximum variations of TIT and TET were reduced by 15–20 °C during the fluctuation of the gas turbine’s power output. In conclusion, high-efficiency operation and a reduction in the degradation of the high-temperature parts can be expected through optimal operations of gas turbines by applying the proposed advanced control logic in a harsh operating environment. Moreover, fast load following can be achieved to meet the recent requirements of the operation environment of gas turbines by improving the ramp rate from 30 to 60 MW/min.

show abstract

Section: Overviewmentioning

confidence: 99%

Advanced Gas Turbine Control Logic Using Black Box Models for Enhancing Operational Flexibility and Stability

Moon

Kim

2020

Energies

Self Cite

View full text Add to dashboard Cite

show abstract

“…Due to the low TIT and pressure ratio in micro-turbines, their thermal efficiency is lower than conventional turbines. 60 Compared to the other equipment in the small-scale power generation systems, the micro-turbines are very expensive, and their failure or degradation has significant effects on power generation rate. Therefore, many studies have been performed to ensure the stable operation of micro-gas turbines.…”

Section: Combustion-based Micro-power Generationmentioning

confidence: 99%

Micro-power generation using micro-turbine (moving) and thermophotovoltaic (non-moving) systems

Hosseini

2019

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

Combustion-based micro-power generation is a serious candidate for substitution of traditional batteries. As the volume of combustion system decreases to small-scale combustors, ignition and combustion stability are becoming considerable challenges due to short residence time and large heat loss. To overcome these shortages, several experimental investigations have been implemented to generate micro-power using both moving (micro-turbines) and non-moving (thermophotovoltaic) systems. Although the goal of both systems is to generate micro-power via combustion phenomenon, the approaches to the goal is different. Nevertheless, combustion instability and various shortages in burner and combustor have been noticed by several researchers regardless of the micro-power generation method. In this paper, a review about recent development in application of small-scale combustion in micro-power generation and micro-thruster systems using micro-turbine and thermophotovoltaic systems is presented. The special focus of this paper is on flame regimes, fuel/oxidizer mixing, flame stability conditions, heat recirculation, non-equilibrium transport, flame-wall thermal and kinetic couplings, and improvement of energy conversion efficiency.

show abstract

“…Previous research efforts have made valuable contributions in improving performance-based gas path diagnostics methods. However, most of this work is focused on large scale industrial gas turbines; only a few studies are focused on micro gas turbine [35][36][37][38]. Performance-based diagnostics of MGT by employing GPA poses numerous challenges.…”

Section: Review On Performance Based Gas Path Diagnosticsmentioning

confidence: 99%

Diagnostics-Oriented Modelling of Micro Gas Turbines for Fleet Monitoring and Maintenance Optimization

Rahman

Zaccaria²,

Zhao³

et al. 2018

Processes

View full text Add to dashboard Cite

The market for the small-scale micro gas turbine is expected to grow rapidly in the coming years. Especially, utilization of commercial off-the-shelf components is rapidly reducing the cost of ownership and maintenance, which is paving the way for vast adoption of such units. However, to meet the high-reliability requirements of power generators, there is an acute need of a real-time monitoring system that will be able to detect faults and performance degradation, and thus allow preventive maintenance of these units to decrease downtime. In this paper, a micro gas turbine based combined heat and power system is modelled and used for development of physics-based diagnostic approaches. Different diagnostic schemes for performance monitoring of micro gas turbines are investigated.

show abstract

The effects of internal leakage on the performance of a micro gas turbine

Cited by 36 publications

References 31 publications

Advanced Gas Turbine Control Logic Using Black Box Models for Enhancing Operational Flexibility and Stability

Advanced Gas Turbine Control Logic Using Black Box Models for Enhancing Operational Flexibility and Stability

Micro-power generation using micro-turbine (moving) and thermophotovoltaic (non-moving) systems

Diagnostics-Oriented Modelling of Micro Gas Turbines for Fleet Monitoring and Maintenance Optimization

Contact Info

Product

Resources

About