scholarly journals Gas Turbine Compressor Operating Environment and Material Evaluation

1989 ◽  
Author(s):  
R. W. Haskell
Keyword(s):  
Gas Turbine ◽  
Material Selection ◽  
Necessary Condition ◽  
Base Materials ◽  
Material Evaluation ◽  
Filtration System ◽  
And Performance ◽  
A Site ◽  
Gas Turbine Compressor ◽  
Selection Of

The reliability and performance of a gas turbine compressor is strongly dependent upon the environment in which it operates, the materials which are used, and the filtration system. Erosion and to a certain extent fouling can be controlled by the filtration system, but corrosion is largely controlled through site and material selection. The factors which determine the corrosivity of a site are humidity, the concentration of acid-forming gases, and the composition of particulates. The interrelationships of these factors are discussed with an aim of reducing their impact on compressor operation. A necessary condition for corrosion is the presence of moisture. The acidity of the moisture results from its interaction with the gases and particulates of the environment. The details of these interactions which are important to turbine operators are discussed. A considerable amount of corrosion testing of base materials and coatings has been performed and this is reviewed. A table is presented for selection of compressor materials based on the nature of the site environment and the type of compressor filtration.

scholarly journals Selection of the Most Advantageous Gas Turbine Air Filtration System: Comparative Study of Actual Operating Experience

1985 ◽  
Author(s):  
Seyed I. Gilani ◽  
Musadaq Z. Mehr
Keyword(s):  
Gas Turbine ◽  
High Efficiency ◽  
Operating Experience ◽  
Air Filtration ◽  
Actual Operating ◽  
Filtration System ◽  
Clean System ◽  
Gas Turbine Compressor ◽  
Selection Of ◽  
Pulse Jet

This paper discusses relative merits of three types of air filtration systems used by Sui Northern Gas Pipelines Ltd. (Pakistan), on its gas turbine compressor packages. These Filtration systems are: (i) Two stage inertial plus auto oil bath type multi-duty filters by AAF used on Saturn Mark–I packages manufactured by Solar Turbines Inc. (ii) Three stage high efficiency barrier filters by AAF used on Centaur packages by Solar. (iii) Single stage pulse-jet self-cleaning filter by Donaldson again used on a Centaur package. The selection is primarily based on package performance data collected over a 15 month period analyzing power loss due to fouling effects and related operation and maintenance costs for the three systems. The Company’s operating experience indicates that on new installations the pulse clean system offers the best advantage both in terms of filtration costs as well as availability of additional horse power when operating under moderate to severe environmental conditions.

scholarly journals Technology Review of Modern Gas Turbine Inlet Filtration Systems

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Melissa Wilcox ◽  
Rainer Kurz ◽  
Klaus Brun
Keyword(s):  
Gas Turbine ◽  
Life Cycle Cost ◽  
Ambient Air ◽  
Life Cycle Cost Analysis ◽  
Air Filtration ◽  
Successful Operation ◽  
Filtration System ◽  
Operational Life ◽  
The Many ◽  
Selection Of

An inlet air filtration system is essential for the successful operation of a gas turbine. The filtration system protects the gas turbine from harmful debris in the ambient air, which can lead to issues such as FOD, erosion, fouling, and corrosion. These issues if not addressed will result in a shorter operational life and reduced performance of the gas turbine. Modern day filtration systems are comprised of multiple filtration stages. Each stage is selected based on the local operating environment and the performance goals for the gas turbine. Selection of these systems can be a challenging task. This paper provides a review of the considerations for selecting an inlet filtration system by covering (1) the characteristics of filters and filter systems, (2) a review of the many types of filters, (3) a detailed look at the different environments where the gas turbine can operate, (4) a process for evaluating the site where the gas turbine will be or is installed, and (5) a method to compare various filter system options with life cycle cost analysis.

Application of Gas Turbine/Compressors in LNG Plants

1980 ◽  
Vol 102 (1) ◽  
pp. 132-135
Author(s):  
T. T. Brown ◽  
J. K. Hubbard
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Liquefied Natural Gas ◽  
Gas Turbine Compressor ◽  
Selection Of

The objective of this paper is to discuss key considerations associated with selection of Gas Turbine Driven LNG (Liquefied Natural Gas) Turbo Compressors. The selection of any compressor and the ultimate performance is greatly affected by the gas turbine driver chosen. The selection of gas turbine/compressor packages is even more critical when the compressor is to operate on refrigeration service such as in an LNG plant. The selection, performance and operation will be discussed for complete gas turbine compressor packages.

Gas Turbine Field Performance Determination: Sources of Uncertainties

2000 ◽  
Author(s):  
M. Pinelli ◽  
P. R. Spina
Keyword(s):  
Gas Turbine ◽  
Estimation Error ◽  
A Priori ◽  
Field Performance ◽  
Thermodynamic Cycle ◽  
Field Measurements ◽  
Characteristic Parameters ◽  
And Performance ◽  
Selection Of

This paper presents an analysis of the uncertainties in the determination of gas turbine health, which arise by using a method of Gas Path Analysis. This method uses field measurements to estimate, through a mathematical model of the gas turbine thermodynamic cycle, the characteristic geometric and performance parameters, which are indices of gas turbine health. The investigated sources of uncertainties are the inaccuracy of measurements and the necessity of fixing a priori a number of characteristic parameters. This fact implies that variations occurring on these parameters in the actual gas turbine cause an estimation error on the characteristic parameters used as problem variables. The analysis leads to the selection of the appropriate measurements to be used in the gas turbine health determination and identification of both the most critical measurements and parameters.

scholarly journals Five Steps to Evaluate a Gas Turbine Inlet Air Filtration System

2011 ◽  
Vol 133 (02) ◽  
pp. 48-49 ◽  
Author(s):  
Melissa Wilcox
Keyword(s):  
Gas Turbine ◽  
Lifetime Cost ◽  
Air Filtration ◽  
Operating Environment ◽  
Turbine Inlet ◽  
Filtration System ◽  
Lifetime Costs ◽  
Fourth Step ◽  
And Performance ◽  
The Cost

This article discusses five steps for evaluating a gas turbine inlet air filtration system. The first step to evaluate an inlet filtration system is to study the operating environment. It is important to understand what must be removed from the air by the filtration system before evaluating the existing system. Once the operating environment is defined, the existing filtration system can be evaluated. Third step is the maintenance, which is an important part of any system. It ensures that the system will stay in an operable condition and perform as required. There are several tasks which, if performed consistently and correctly, can ensure that the filtration system operates properly. Fourth step is the upgrades, which should be considered if the operator finds deficiencies in the current filtration system. The fifth step is completing a lifecycle cost analysis. This analysis quantifies the cost and performance of a system in monetary terms to obtain a lifetime cost of the system. The lifetime costs between two different system options can be directly compared.

Gas Turbine Field Performance Determination: Sources of Uncertainties

2000 ◽  
Vol 124 (1) ◽  
pp. 155-160 ◽  
Author(s):  
M. Pinelli ◽  
P. R. Spina
Keyword(s):  
Gas Turbine ◽  
Estimation Error ◽  
A Priori ◽  
Field Performance ◽  
Thermodynamic Cycle ◽  
Field Measurements ◽  
Characteristic Parameters ◽  
And Performance ◽  
Selection Of

This paper presents an analysis of the uncertainties in the determination of gas turbine health, which arise by using a method of gas path analysis. This method uses field measurements to estimate, through a mathematical model of the gas turbine thermodynamic cycle, the characteristic geometric and performance parameters, which are indices of gas turbine health. The investigated sources of uncertainties are the influence of measurement accuracy and the a priori selection of the characteristic parameters that have to be considered constant during the calculation. This fact implies that variations occurring on these parameters in the actual gas turbine cause an estimation error on the characteristic parameters used as problem variables. The analysis leads to the selection of the appropriate measurements to be used in the gas turbine health determination and to the identification of both the most critical measurements and parameters.

A Review of the Factors Affecting the Design, Specification and Material Selection of Screws for Use in Orthopaedic Surgery

1978 ◽  
Vol 7 (2) ◽  
pp. 114-123 ◽  
Author(s):  
B. A. Jordan ◽  
A. N. Hughes
Keyword(s):  
Cortical Bone ◽  
Orthopaedic Surgery ◽  
Material Selection ◽  
Bone Screws ◽  
Design Specification ◽  
Factors Affecting ◽  
Bone Screw ◽  
And Performance ◽  
Selection Of

The literature on all aspects of design and performance of surgical screws has been reviewed. This information has then been used to optimize the design of surgical bone screws. Finally, the design of a 4 mm cortical bone screw has been considered in detail.

3D Design and Performance Analysis of Weft Insertion Mechanism of Carbon Fiber Multi-Layer Loom

2013 ◽  
Vol 455 ◽  
pp. 598-603
Author(s):  
Dan Dan Li ◽  
Jian Cheng Yang ◽  
Hua Qing Wang ◽  
Kai Yang ◽  
Jian Feng Qin ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Performance Analysis ◽  
Material Selection ◽  
Incidental Finding ◽  
3D Design ◽  
Work Requirements ◽  
Insertion Mechanism ◽  
And Performance ◽  
Static Simulation ◽  
Selection Of

The design and research of weft insertion mechanism of carbon fiber multi-layer loom which has the great significance for the development of modern 3D weaving equipment. According to the special requirements of carbon fiber multi-layer weaving fabric, a multilayer weft insertion system incidental finding device is designed, which can be satisfied with multi-layer weft insertion according to the change of shedding position and different layers. In order to meet the sword belt and lifting gear running smooth, kinematic and dynamic analysis and static simulation have been done. Analysis results show that institutions satisfy all work requirements, and have important guiding significance for material selection of components.

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