Analysis of Design and Operation Performance of Micro Gas Turbine : Part 2 - Variations in Engine's Operation and Performance Caused by Performance Degradation of Compressor and Turbine

2015 ◽  
Vol 18 (4) ◽  
pp. 30-35
Author(s):  
Jeong Ho Kim ◽  
Min Jae Kim ◽  
Tong Seop Kim
Keyword(s):  
Gas Turbine ◽  
Performance Degradation ◽  
Operation Performance ◽  
Micro Gas Turbine ◽  
And Performance

Impact of Different Volume Sizes on Dynamic Stability of a Gas Turbine Fuel Cell Hybrid System

2019 ◽  
Author(s):  
Alessio Abrassi ◽  
Alberto Traverso ◽  
David Tucker ◽  
Eric Liese
Keyword(s):  
Fuel Cell ◽  
Gas Turbine ◽  
Cell System ◽  
Open Loop ◽  
Operating Conditions ◽  
Micro Gas Turbine ◽  
Performance Pressure ◽  
Lumped Parameter ◽  
Turbine Shaft ◽  
And Performance

Abstract A dynamic model is developed for a Micro Gas Turbine (MGT), characterized by an intrinsic free-spool configuration, coupled to large volumes. This is inspired by an experimental facility at the National Energy Technology Laboratory (NETL) called Hyper, which emulates a hybrid MGT and Fuel Cell system. The experiment and model can simulate stable and unstable operating conditions. The model is used to investigate the effects of different volumes on surge events, and to test possible strategies to safely avoid or recover from unstable compressor working conditions. The modelling approach started from the Greitzer lumped parameter approach, and it has been improved with integration of empirical methods and simulated components to better match the real Hyper plant layout and performance. Pressure, flow rate, and frequency plots are shown for the surge behavior comparing two different volume sizes, for cases where gas turbine shaft speed is uncontrolled (open loop) and controlled (closed loop). The ability to recover from a surge event is also demonstrated.

DESIGN OF COMBUSTOR FOR MICRO GAS TURBINE TEST RIG AND ITS PERFORMANCE PREDICTION

2015 ◽  
Vol 77 (8) ◽  
Author(s):  
Feng Xian Tan ◽  
Srithar Rajoo ◽  
Meng Soon Chiong ◽  
Cheng Tung Chong ◽  
Alessandro Romagnoli ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Performance Prediction ◽  
Test Rig ◽  
Fuel Price ◽  
Power Generator ◽  
Micro Gas Turbine ◽  
Backup System ◽  
Range Extender ◽  
Auxiliary Power ◽  
And Performance

Stringent emission rules, air pollution, fluctuation of fuel price and depletion of fossil fuel resources are driving the industry to seek for better alternative of power generation. Micro gas turbine (MGT) provides a promising potential to solve the facing problems. MGT could be used in many applications such as in range extender vehicle, auxiliary power generator, power backup system, combine heat and power system, etc. Combustor plays a very crucial role in MGT system as its performance directly affects the emission quality, power output and fuel consumption of the entire system. This paper demonstrates the literature review, design methodology and performance prediction of the combustor designed for a 14.5kW MGT test rig.

Integration of Distributing Energy System I: Modeling and Simulation

2012 ◽  
Vol 512-515 ◽  
pp. 1156-1162
Author(s):  
Jin Yang Wang ◽  
Guo Min Cui ◽  
Fu Yu Peng
Keyword(s):  
Numerical Simulation ◽  
Gas Turbine ◽  
Performance Prediction ◽  
System Modeling ◽  
Energy System ◽  
Primary Energy ◽  
Simulation System ◽  
Generation System ◽  
Micro Gas Turbine ◽  
And Performance

The heating, power and cooling distributing energy system is studied by numerical simulation. System modeling and performance prediction are studied on the tri-generation system based on micro gas turbine as primary energy utilizing equipment in part Ⅰ. The results show: The numerical simulation can replace pilotscale experiment of objective project in the aspects of design and performance prediction of distributing energy system.

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

Processes ◽  
2018 ◽  
Vol 6 (11) ◽  
pp. 216 ◽  
Author(s):  
Moksadur Rahman ◽  
Valentina Zaccaria ◽  
Xin Zhao ◽  
Konstantinos Kyprianidis
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Performance Monitoring ◽  
High Reliability ◽  
Small Scale ◽  
Power Generators ◽  
Micro Gas Turbine ◽  
Commercial Off The Shelf ◽  
And Performance ◽  
The Cost

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.

System Development of Micro Gas Turbine Co-Generation

2007 ◽  
Vol 345-346 ◽  
pp. 1003-1006 ◽  
Author(s):  
Kwang Beom Hur ◽  
Sang Kyu Rhim ◽  
Jung Keuk Park ◽  
Jae Hoon Kim
Keyword(s):  
Gas Turbine ◽  
Distributed Generation ◽  
System Development ◽  
Gas Absorption ◽  
Power Performance ◽  
Micro Gas Turbine ◽  
Grid Connection ◽  
Number Of Factors ◽  
Safety And Reliability ◽  
And Performance

The new market penetration using the distributed generation technology is linked to a large number of factors like economics and performance, safety and reliability, market regulations, environmental issues, or grid connection standards. KEPCO, a government company in Korea, has performed the project to identify and evaluate the performance of Micro Gas Turbine (MGT) technologies focused on 30, 60kW-class grid-connected optimization and combined Heat & Power performance. This paper describes the results for the mechanical, electrical, and environmental tests of MGT on actual grid-connection under Korean regulations. As one of the achievements, the simulation model of Exhaust-gas Absorption Chiller was developed, so that it will be able to analyze or propose new distributed generation system using MGT.

Combustion chamber design and performance for micro gas turbine application

2017 ◽  
Vol 166 ◽  
pp. 258-268 ◽  
Author(s):  
Ibrahim I. Enagi ◽  
K.A. Al-attab ◽  
Z.A. Zainal
Keyword(s):  
Combustion Chamber ◽  
Gas Turbine ◽  
Micro Gas Turbine ◽  
Chamber Design ◽  
And Performance

Effects of Equivalence Ratio on the Off-Design Combustion Performance of Adjustable Fuel Feeding Combustor for a Micro-Gas Turbine

2017 ◽  
Author(s):  
Chang Xing ◽  
Penghua Qiu ◽  
Li Liu ◽  
Wenkai Shen ◽  
Yajin Lyu ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Characteristic Number ◽  
Outlet Temperature ◽  
Operation Performance ◽  
Feeding Method ◽  
Micro Gas Turbine ◽  
Combustion Performance ◽  
Fuel Flow ◽  
Combustion Technology ◽  
Fuel Tube

To improve off-design operation performance of micro-gas turbine, we proposed an adjustable fuel feeding combustor (AFFC), and it employed the lean premixed swirling combustion technology and the adjustable fuel feeding method (AFFM). The AFFM was achieved by switching the various working groups of main fuel tube, and represented by its unique characteristic number (U). To verify the availability of adopted models, the AFFC combustion performance was investigated numerically at different equivalence ratios (ϕ) in ANSYS CFX. The results indicate that NO emission has various trends with the rising U under different ϕ due to the coupling influence of fuel flow and jet velocity in each working main fuel tube. Although the AFFM has almost no effect on the distribution of outlet temperature and the length of primary recirculation zone, the maximum and non-uniform coefficient of outlet temperature increase with the rising U.

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