Economic Evaluation of Industrial Gas Turbines for Electrical Power Generation

2012 ◽  
Author(s):  
W. Mohamed ◽  
B. Al-Abri ◽  
P. Pilidis ◽  
A. Nasir
Keyword(s):  
Power Plant ◽  
Gas Turbines ◽  
Net Present Value ◽  
Electrical Power ◽  
Engine Performance ◽  
Performance Model ◽  
Multidimensional Analysis ◽  
Levelized Cost Of Electricity ◽  
Operational Life ◽  
Industrial Gas Turbines

This paper looks at some of the financial implications of generating electricity using a 165 MW gas turbine based power plant operating in a warm coastal environment. The engine performance model is developed using the Turbomatch in-house software package capable of simulating engine performance at both design and off-design conditions. Given the long operational life of the power plant, the economic model uses the Net Present Value (NPV) technique to simulate and account for the time value of money. This allows techno-economic comparisons between various modes of operation and variations in power demand to be made. The modelling will be used to optimise operation using key economic and performance parameters. The modelling is based on the Techno-Economic, Environmental and Risk Analysis (TERA) philosophy which allows for a broad and multidimensional analysis of the problem to aid plant operation and equipment selection. The analysis shows that 30 °C increase in ambient temperature above the design point results in 11.5% increase in the levelized cost of electricity (LCOE). The analysis also shows that the LCOE is increased by 4.3 as a result of 5% degradation in turbine compressor.

An Improved Method for Evaluating Market Value of Turbine Gaspath Component Alternatives

2003 ◽  
Author(s):  
Fred T. Willett ◽  
Michael R. Pothier
Keyword(s):  
Power Plant ◽  
Gas Turbines ◽  
Net Present Value ◽  
Risk Level ◽  
Improved Method ◽  
Short Term ◽  
Plant Operator ◽  
Efficiency Increase ◽  
Industrial Gas Turbines

The large installed base of large frame industrial gas turbines has prompted a number of replacement part offerings, in addition to the replacement parts offered by the OEM. Willett [1] proposed an economic model developed to evaluate gas turbine component alternatives for base load and cyclic duty operation. The improved method expands the capability of the earlier model by including risk level as a variable. Power plant operator value of alternative replacement turbine components for a popular large frame industrial gas turbines is evaluated. A baseline case is established to represent the current component repair and replacement situation, assuming no risk. Each of the modes of power plant operation is evaluated from a long-term financial focus. A short-term financial focus is evaluated for contrast and discussed briefly. Long-term focus is characterized by a nine-year evaluation period, while short-term focus is based on first year benefit only. Four factors are varied: part price, output increase, simple cycle efficiency increase, and additional risk. Natural gas fuel is considered at two different gas prices. Peak, off-peak, and spot market electricity prices are considered. Results are calculated and compared using net present value (NPV) criteria. A case study is presented to demonstrate the method’s applicability to a range of different risk scenarios, from ill-fitting replacement parts to catastrophic turbine failure.

scholarly journals Powering Ahead

2011 ◽  
Vol 133 (05) ◽  
pp. 30-33 ◽  
Author(s):  
Lee S. Langston
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Nuclear Power ◽  
Electrical Power ◽  
The United States ◽  
Combined Cycle ◽  
Electrical Power System ◽  
Efficient Technology ◽  
The Military

This article explores the increasing use of natural gas in different turbine industries and in turn creating an efficient electrical system. All indications are that the aviation market will be good for gas turbine production as airlines and the military replace old equipment and expanding economies such as China and India increase their air travel. Gas turbines now account for some 22% of the electricity produced in the United States and 46% of the electricity generated in the United Kingdom. In spite of this market share, electrical power gas turbines have kept a much lower profile than competing technologies, such as coal-fired thermal plants and nuclear power. Gas turbines are also the primary device behind the modern combined power plant, about the most fuel-efficient technology we have. Mitsubishi Heavy Industries is developing a new J series gas turbine for the combined cycle power plant market that could achieve thermal efficiencies of 61%. The researchers believe that if wind turbines and gas turbines team up, they can create a cleaner, more efficient electrical power system.

scholarly journals Turbomachinery Design Considerations for the Nuclear HTGR-GT Power Plant

1981 ◽  
Vol 103 (1) ◽  
pp. 65-77 ◽  
Author(s):  
Colin F. McDonald ◽  
Murdo J. Smith
Keyword(s):  
Power Plant ◽  
Gas Turbines ◽  
Mechanical Design ◽  
Primary System ◽  
Design Considerations ◽  
Commercial Plant ◽  
Industrial Gas Turbines ◽  
Plant Configuration ◽  
Turbomachinery Design ◽  
The U.S

For several years, design studies have been underway in the U.S. on a nuclear closed-cycle gas turbine plant (HTGR-GT). This paper presents design aspects of the helium turbo-machine portion of these studies. Gas dynamic and mechanical design considerations are presented for helium turbomachines in the 400 MWe (non-intercooled) and 600 MWe (intercooled) power range. Design of the turbomachine is a key element in the overall power plant program effort, which is currently directed towards the selection of a reference HTGR-GT commercial plant configuration for the U.S. utility market. A conservative design approach has been emphasized to provide for maximum safety and durability. The studies presented for the integrated plant concept outline the necessary close working relationship between the reactor primary system and turbomachine designers. State-of-the-art technology from large industrial gas turbines developed in the U.S., considered directly applicable to the design of a helium turbomachine, particularly in the areas of design methodology, performance, materials, and fabrication methods, is emphasized.

scholarly journals Pressure gain combustion advantage in land-based electric power generation

2017 ◽  
Vol 1 ◽  
pp. K4MD26 ◽  
Author(s):  
Seyfettin C. Gülen
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Gas Turbines ◽  
Combined Cycle ◽  
Cycle Performance ◽  
Heavy Duty ◽  
Quantum Leap ◽  
Pressure Gain Combustion ◽  
Industrial Gas Turbines ◽  
Plant Efficiency

AbstractThis article evaluates the improvement in gas turbine combined cycle power plant efficiency and output via pressure gain combustion (PGC). Ideal and real cycle calculations are provided for a rigorous assessment of PGC variants (e.g., detonation and deflagration) in a realistic power plant framework with advanced heavy-duty industrial gas turbines. It is shown that PGC is the single-most potent knob available to the designers for a quantum leap in combined cycle performance.

scholarly journals Impact of compressed air energy storage demands on gas turbine performance

2020 ◽  
pp. 095765092090627 ◽  
Author(s):  
Uyioghosa Igie ◽  
Marco Abbondanza ◽  
Artur Szymański ◽  
Theoklis Nikolaidis
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Pressure Ratio ◽  
Engine Performance ◽  
Compressed Air ◽  
Design Stage ◽  
Simulation Code ◽  
Ratio Distribution ◽  
Stall Margin ◽  
Industrial Gas Turbines

Industrial gas turbines are now required to operate more flexibly as a result of incentives and priorities given to renewable forms of energy. This study considers the extraction of compressed air from the gas turbine; it is implemented to store heat energy at periods of a surplus power supply and the reinjection at peak demand. Using an in-house engine performance simulation code, extractions and injections are investigated for a range of flows and for varied rear stage bleeding locations. Inter-stage bleeding is seen to unload the stage of extraction towards choke, while loading the subsequent stages, pushing them towards stall. Extracting after the last stage is shown to be appropriate for a wider range of flows: up to 15% of the compressor inlet flow. Injecting in this location at high flows pushes the closest stage towards stall. The same effect is observed in all the stages but to a lesser magnitude. Up to 17.5% injection seems allowable before compressor stalls; however, a more conservative estimate is expected with higher fidelity models. The study also shows an increase in performance with a rise in flow injection. Varying the design stage pressure ratio distribution brought about an improvement in the stall margin utilized, only for high extraction.

Requirements for Gas Turbine Inlet Systems in Russia

2009 ◽  
Author(s):  
Tagir R. Nigmatulin ◽  
Vladimir E. Mikhailov
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Oil And Gas ◽  
Inlet System ◽  
Climate Zones ◽  
Russian Market ◽  
Turbine Inlet ◽  
Industrial Gas Turbines

Russian power generation, oil and gas businesses are rapidly growing. Installation of new industrial gas turbines is booming to fulfill the demand from economic growth. Russia is a unique country from the annual temperature variation point of view. Some regions may reach up to 100C. One of the biggest challenges for world producers of gas turbines in Russia is the ability to operate products at power plants during cold winters, when ambient temperature might be −60C for a couple of weeks in a row. The reliability and availability of the equipment during the cold season is very critical. Design of inlet systems and filter houses for the Russian market, specifically for northern regions, has a lot of specifics and engineering challenges. Joint Stock Company CKTI is the biggest Russian supplier of air intake systems for industrial gas turbines and axial-flow compressors. In 1969 this enterprise designed and installed the first inlet for the power plant Dagskaya GRES (State Regional Electric Power Plant) with the first 100MW gas-turbine which was designed and manufactured by LMZ. Since the late 1960s CKTI has designed and manufactured inlet systems for the world market and been the main supplier for the Russian market. During the last two years CKTI has designed inlet systems for a broad variety of gas turbine engines ranging from 24MW up to 110MW turbines which are used for power generation and as a mechanical drive for the oil and gas industry. CKTI inlet systems with filtering devices or houses are successfully used in different climate zones including the world’s coldest city Yakutsk and hot Nigeria. CKTI has established CTQs (Critical to quality) and requirements for industrial gas turbine inlet systems which will be installed in Russia in different climate zones for all types of energy installations. The last NPI project of the inlet system, including a nonstandard layout, was done for a small gas-turbine engine which is installed on a railway cart. This arrangement is designed to clean railway lines with the exhaust jet in a quarry during the winter. The design of the inlet system with efficient multistage compressor extraction for deicing, dust and snow resistance has an interesting solution. The detailed description of challenges, weather requirements, calculations, losses, and design methodologies to qualify the system for tough requirements, are described in the paper.

scholarly journals Industrial Gas Turbine Performance: Compressor Fouling and On-Line Washing

2014 ◽  
Vol 136 (10) ◽  
Author(s):  
Uyioghosa Igie ◽  
Pericles Pilidis ◽  
Dimitrios Fouflias ◽  
Kenneth Ramsden ◽  
Panagiotis Laskaridis
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Engine Performance ◽  
Operating Conditions ◽  
Compressor Cascade ◽  
Compressor Blades ◽  
Turbine Performance ◽  
Industrial Gas Turbines ◽  
On Line ◽  
The Impact

Industrial gas turbines are susceptible to compressor fouling, which is the deposition and accretion of airborne particles or contaminants on the compressor blades. This paper demonstrates the blade aerodynamic effects of fouling through experimental compressor cascade tests and the accompanied engine performance degradation using turbomatch, an in-house gas turbine performance software. Similarly, on-line compressor washing is implemented taking into account typical operating conditions comparable with industry high pressure washing. The fouling study shows the changes in the individual stage maps of the compressor in this condition, the impact of degradation during part-load, influence of control variables, and the identification of key parameters to ascertain fouling levels. Applying demineralized water for 10 min, with a liquid-to-air ratio of 0.2%, the aerodynamic performance of the blade is shown to improve, however most of the cleaning effect occurred in the first 5 min. The most effectively washed part of the blade was the pressure side, in which most of the particles deposited during the accelerated fouling. The simulation of fouled and washed engine conditions indicates 30% recovery of the lost power due to washing.

Performance Deterioration in Industrial Gas Turbines

1992 ◽  
Vol 114 (2) ◽  
pp. 161-168 ◽  
Author(s):  
I. S. Diakunchak
Keyword(s):  
Gas Turbine ◽  
Service Time ◽  
Gas Turbines ◽  
Engine Performance ◽  
Turbine Engine ◽  
Factors Affecting ◽  
Preventative Measures ◽  
Industrial Gas Turbines ◽  
Performance Deterioration ◽  
Industrial Gas Turbine

This paper describes the most important factors affecting the industrial gas turbine engine performance deterioration with service time and provides some approximate data on the prediction of the rate of deterioration. Recommendations are made on how to detect and monitor the performance deterioration. Preventative measures, which can be taken to avoid or retard the performance deterioration, are described in some detail.

Energy, Financial, and Environmental Investigation of a Direct Steam Production Power Plant Driven by Linear Fresnel Solar Reflectors

2020 ◽  
Vol 143 (2) ◽  
Author(s):  
Mokhtar Ghodbane ◽  
Evangelos Bellos ◽  
Zafar Said ◽  
Boussad Boumeddane ◽  
Abderrahmane Khechekhouche ◽  
...  
Keyword(s):  
Power Plant ◽  
Net Present Value ◽  
Solar Power ◽  
Solar Power Plant ◽  
Present Value ◽  
Optical Efficiency ◽  
Levelized Cost Of Electricity ◽  
Water Steam ◽  
Produce Water ◽  
The Mean

Abstract The objective of this paper is the investigation of the annual performance of a solar power plant with linear Fresnel reflectors in the El-Oued region at Algeria. The solar collectors produce water steam that feeds a turbine to produce electricity. The System Advisor Model (sam) tool is used for simulation. The mean net daily electricity production rate from 8:30 am to 5:30 pm is 48 MWe, and the respective annual production is 210,336 MWh/year. The mean daily optical efficiency of the solar field was close to 52%, while the mean thermal efficiency was about 39%. The net daily cycle efficiency is found to be 24%. The net capital cost of the examined system is $393 million, and the developer net present value is $47 million; the investor net present value is $15 million, the entire period of capital recovery is 11 years, and the levelized cost of electricity is 0.0382 $/kWh. The solar power plant leads to the yearly avoidance of 420,672 tons carbon dioxide emissions (operational cost savings of $6.1 million). Based on the obtained results, linear Fresnel reflectors can be used to achieve satisfying, energetic, financial, and environmental performance that can lead to sustainability.

scholarly journals Assessing Diagnostic Techniques for Poblem Identification in Advanced Industrial Gas Turbines

1990 ◽  
Author(s):  
Alexander Lifson ◽  
Anthony J. Smalley ◽  
George H. Quentin ◽  
Joseph P. Zanyk
Keyword(s):  
Power Generation ◽  
Electrical Power Generation ◽  
Gas Turbines ◽  
Signal Analysis ◽  
Electrical Power ◽  
Diagnostic Techniques ◽  
Operating Conditions ◽  
Recent Past ◽  
Analysis Methods ◽  
Industrial Gas Turbines

This paper describes existing, developing, and needed methods for detection, identification, and diagnosis of problems in combustion turbines. The use of combustion turbines for electrical power generation is growing, and advanced models of large industrial turbines are now starting to enter service. In view of the harsh operating conditions and severe service to which these new turbines will be exposed, this paper evaluates sensors and signal analysis methods to detect and diagnose the problems which may surface in operation. Generic problems which have been observed in combustion turbine installations in the recent past are identified, and methods for detecting these problems, quantifying them, and isolating their causes are analyzed.

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