VeLoNOx™ Combustion System Operating Experience on Heavy Duty Gas Turbine

2010 ◽  
Author(s):  
Federico Bonzani ◽  
Carlo Piana ◽  
Domenico Zito
Keyword(s):  
Gas Turbine ◽  
Operating Experience ◽  
Combustion System ◽  
Heavy Duty ◽  
Operational Conditions ◽  
Commercial Operation ◽  
Heavy Duty Gas Turbine ◽  
Service Agreement ◽  
System Operating

In order to improve operability and flexibility, Ansaldo Energia has upgraded its top of the line AE94.3A gas turbine with a new combustion system called VeLoNOx™ (Very Low NOx) based on its own experience. This new combustion system meets the most stringent pollutant limitations (as of today) required by the governments all over EU, i.e. less than 15 ppm NOx emissions. The system has been first tested intensively on a single AE94.3A built by Ansaldo Energia. Due to the long term service agreement with the customer the whole operation has been constantly monitored and all most relevant operational conditions have been tested. Then has been installed on other engines. Up to now VeLoNOx™ combustion systems have been cumulating more than 25000 EOH on many sites, showing very good performances in line with expectations. Orders for many retrofit applications have been already awarded. This paper describes the performance of the system on the units of Ansaldo Energia fleet such as AE94.3A2 and AE94.3A4, focusing on the improvements carried out during commercial operation.

scholarly journals Design of a 65,000-Hp Heavy Duty Two-Shaft Gas Turbine

1974 ◽  
Author(s):  
A. J. Orsino ◽  
K. E. Gilbert ◽  
H. Kojima
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Operating Experience ◽  
Commercial Application ◽  
Heavy Duty ◽  
Heavy Duty Gas Turbine ◽  
High Level

This paper describes the design of a 65,000-Hp heavy duty gas turbine for marine service, for land-based mechanical drive applications and for 50 Hz power generation. Operating experience of generically similar units was used to establish the high level of reliability and maintainability incorporated into this unit. This model series gas turbine will be available for commercial application in 1974.

Operating Experience in Refinery Application of the 13MW-Class Heavy Duty MF-111 Gas Turbine Engine

1990 ◽  
Author(s):  
J. Masada ◽  
I. Fukue
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Operating Experience ◽  
Combined Cycle ◽  
Outlet Temperature ◽  
Heavy Duty ◽  
Turbine Engine ◽  
Industrial Gas Turbines ◽  
Heavy Duty Gas Turbine ◽  
Temperature Levels

A new, 13MW class, heavy duty gas turbine, the “MF-111” was developed for use as a prime mover for cogeneration, combined cycle and repowering applications. The use of such equipment in refineries presents special challenges as regards the combustion of nonstandard fuels, tolerance of industrial environments, and accomodation of site-specific design requirements. Such circumstances add substantially to the tasks of proving and adjusting the design of a new gas turbine, meeting stringent emissions requirements and introducing to the world of industrial gas turbines the benefits of F-class (1250°C burner outlet temperature) levels of thermodynamic performance. This paper describes how these challenges have successfully been met during the three calendar years and ten machine-years of MF-111 refinery-application experience accumulated to-late.

scholarly journals Development and Testing of the 13MW Class Heavy Duty Gas Turbine MF-111

1987 ◽  
Author(s):  
Eiji Akita ◽  
Kuniaki Aoyama ◽  
Yoshiaki Tsukuda ◽  
Ichiro Fukue ◽  
Sunao Aoki
Keyword(s):  
Gas Turbine ◽  
Axial Flow ◽  
Combined Cycle ◽  
Outlet Temperature ◽  
Heavy Duty ◽  
Design Goal ◽  
Commercial Operation ◽  
Cooling Technology ◽  
Heavy Duty Gas Turbine ◽  
Flow Compressor

A new 13 MW class heavy duty gas turbine “MF-111” with the combustor outlet temperature of 1250°C (1523 K) was developed and tested. The thermal efficiency of MF-111 is designed to be 32% for simple-cycle and 45% in combined-cycle operation. MF-111 has single-shaft configuration, 15-stage axial flow compressor, 8 cannular type combustors and 3-stage axial flow turbine. Advanced cooling technology was incorporated for the turbine and the combustor design to be capable of higher combustor outlet temperature. The prototype was shoptested at full load in April, 1986. The performance and the metal temperatures of hot parts were confirmed to well satisfy the design goal. The first machine of MF-111 started the commercial operation from August, 1986 and has logged satisfactory operations.

Microstructure and Mechanical Property of a Directional Ni-Based Superalloy during Long-Term Exposure

2012 ◽  
Vol 452-453 ◽  
pp. 51-55
Author(s):  
Xuan Xiao ◽  
Xu Le ◽  
Zeng Chao ◽  
Li Yuan Sheng ◽  
Yong An Guo ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Gas Turbine ◽  
Thermal Processing ◽  
Heavy Duty ◽  
Major Research ◽  
Heavy Duty Gas Turbine ◽  
Service Environments ◽  
Increasing Temperature ◽  
Microstructure And Mechanical Property

Directional Ni-based superalloy DZ483 is an advanced gas turbine blade material for heavy duty gas turbine application, which has good combination properties. The major research of this paper is studied on DZ483 alloy’s microstructural changes and mechanical property during long-term exposures in service environments. The results showed that: During thermal processing, the size and distribution of γ' phase tends to be more homogeneous in the interdendritic spaces; the γ' phase on the dendrite seem to arrange in designated directions. During long-term exposures, the amount of the γ' phase was decreasing and the foursquare γ' phases gradually became abnormal with the increasing temperature. However, tensile properties of DZ483 have not decreased obviously

A New Superalloy Enabling Heavy Duty Gas Turbine Wheels for Improved Combined Cycle Efficiency

2017 ◽  
Author(s):  
Andrew Detor ◽  
◽  
Richard DiDomizio ◽  
Don McAllister ◽  
Erica Sampson ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Combined Cycle ◽  
Heavy Duty ◽  
Heavy Duty Gas Turbine ◽  
Cycle Efficiency

Impact of Different Film-Cooling Modes at Trailing Edge on the Aerodynamic Performance of Heavy Duty Gas Turbine Cascade

2011 ◽  
Vol 84-85 ◽  
pp. 259-263
Author(s):  
Xun Liu ◽  
Song Tao Wang ◽  
Xun Zhou ◽  
Guo Tai Feng
Keyword(s):  
Gas Turbine ◽  
Film Cooling ◽  
Large Mass ◽  
Turbine Cascade ◽  
Heavy Duty ◽  
Trailing Edge ◽  
Central Difference ◽  
Adiabatic Effectiveness ◽  
Heavy Duty Gas Turbine ◽  
The Impact

In this paper, the trailing edge film cooling flow field of a heavy duty gas turbine cascade has been studied by central difference scheme and multi-block grid technique. The research is based on the three-dimensional N-S equation solver. By way of analysis of the temperature field, the distribution of profile pressure, and the distribution of film-cooling adiabatic effectiveness in the region of trailing edge with different cool air injection mass and different angles, it is found that the impact on the film-cooling adiabatic effectiveness is slightly by changing the injection mass. The distribution of profile pressure dropped intensely at the pressure side near the injection holes line with the large mass cooling air. The cooling effect is good in the region of trailing edge while the injection air is along the direction of stream.

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