scholarly journals Gas Turbine Generating Experience of West Texas Utilities Company

1957 ◽  
Author(s):  
A. R. Cox
Keyword(s):  
Gas Turbine ◽  
Maintenance Cost ◽  
West Texas ◽  
Operation And Maintenance

A summary of West Texas Utilities Company’s gas-turbine generating experience covering operation and maintenance during the period between December, 1952, and August, 1956. Tabulated operating and maintenance cost is included.

Mercury™ 50 Product Durability, Operation and Maintenance Review

2005 ◽  
Author(s):  
David Teraji ◽  
Jeanne Hettick ◽  
Miller Robison
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Distributed Generation ◽  
Field Evaluation ◽  
Maintenance Cost ◽  
Design Development ◽  
Critical Factors ◽  
Operation And Maintenance ◽  
Product Durability ◽  
Reliability And Availability

The Mercury™ 50 gas turbine operates with a recuperated cycle to produce 4600 kW with a high thermal efficiency and very low emissions. Commercialized in 2003, the Mercury 50 gas turbine has completed an extensive design, development, and field evaluation program that insured a reliable and durable product that is easy to operate and maintain. This results in maximizing operation reliability and availability and lowering maintenance cost, critical factors in the distributed generation and cogeneration power generation markets. 6 Sigma, robust engineering and Kaizen methodologies were used during the design and pre-production phases to collect valuable input from users and prove out the durability, operability and maintainability of the product. This paper will review the Mercury 50 design for durability and ease of operation and maintenance.

Combined Cycle Powerplant Cost Sensitivity Analysis

2021 ◽  
Author(s):  
Pugalenthi Nanadagopal ◽  
Animesh Pandey ◽  
Manjunath More ◽  
Pertik Kamboj
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Combined Cycle ◽  
Maintenance Cost ◽  
Combine Cycle Power Plant ◽  
Manufacturing Companies ◽  
Levelized Cost Of Electricity ◽  
Combine Cycle ◽  
Electrical Generation ◽  
The Impact

Abstract In Gas turbine-based combined cycle power plant market, the customer conducts an economic evaluation of competitive products to decide their buying option. There are different methods to calculate the economics of a power plant like Levelized cost of electricity (LCOE), Net present value (NPV) and payback period. LCOE methodology is commonly used for lifecycle cost analyses for combine cycle power plant that covers cost details of the plant and plant performance over the complete lifetime of a power plant from construction to retiring. Typically, it includes a combine cycle power plant ownership costs (Total plant cost and operating & maintenance cost) and combine cycle power output and efficiency. This LCOE method is helpful to compare power generation system that use similar technologies. This paper encompasses the LCOE calculation method, assumptions & approach to analyze the impact of key parameters of the electrical generation cost. They key parameters includes combine cycle output, combine cycle efficiency, fuel cost, annual operating hours, capital charge factor, annual operating hours, power plant life, discount rate, nominal escalation rate, operating & maintenance cost. This paper analyses result will provide insights to the customer & Gas turbine-based OEM (Own Equipment Manufacturing) companies to focus on different area/parameters to reduce the unit cost of generating electricity.

scholarly journals 2MW Class High Efficiency Gas Turbine IM270 for Co-Generation Plants

1996 ◽  
Author(s):  
Hideo Kobayashi ◽  
Shogo Tsugumi ◽  
Yoshio Yonezawa ◽  
Riuzou Imamura
Keyword(s):  
Gas Turbine ◽  
High Efficiency ◽  
Mechanical Design ◽  
Development Program ◽  
Gas Turbine Engine ◽  
Maintenance Cost ◽  
Turbine Engine ◽  
Generation Plant ◽  
Emission Regulation ◽  
Heavy Duty Gas Turbine

IHI is developing a new heavy duty gas turbine engine for 2MW class co-generation plants, which is called IM270. This engine is a simple cycle and single-spool gas turbine engine. Target thermal efficiency is the higher level in the same class engines. A dry low NOx combustion system has been developed to clear the strictest emission regulation in Japan. All parts of the IM270 are designed with long life for low maintenance cost. It is planned that the IM270 will be applied to a dual fluid system, emergency generation plant, machine drive engine and so on, as shown in Fig.1. The development program of IM270 for the co-generation plant is progress. The first prototype engine test has been started. It has been confirmed that the mechanical design and the dry low NOx system are practical. The component tuning test is being executed. On the other hand, the component test is concurrently in progress. The first production engine is being manufactured to execute the endurance test using a co-generation plant at the IHI Kure factory. This paper provides the conceptual design and status of the IM270 basic engine development program.

Air Inlet Filtration for Gas Turbine Units

1976 ◽  
Author(s):  
P. R. Goldbrunner ◽  
L. Savoie
Keyword(s):  
Gas Turbine ◽  
Maintenance Cost ◽  
Air Inlet

Gas Turbine operators are constantly seeking ways and methods to reduce maintenance cost and extend availability of their units. One method, the use of air inlet filtration, is discussed in this paper. A test of inlet filtration was conducted to solve a unique ingestion problem, but other benefits were also discovered.

scholarly journals Analysis of Contracts to Build Energy Infrastructures to Optimize the OPEX

2020 ◽  
Vol 12 (17) ◽  
pp. 7232
Author(s):  
Jesus Javier Losada-Maseda ◽  
Laura Castro-Santos ◽  
Manuel Ángel Graña-López ◽  
Ana Isabel García-Diez ◽  
Almudena Filgueira-Vizoso
Keyword(s):  
Energy Sector ◽  
Maintenance Cost ◽  
Maintenance Costs ◽  
Execution Costs ◽  
Operation And Maintenance ◽  
Maximum Profit ◽  
Hydroelectric Plants ◽  
Operation And Maintenance Cost ◽  
Contractual Agreement ◽  
Energy Infrastructures

The employer (owner) of the project wants to obtain the maximum profit for the money invested and the consultant (contractor) will try to give less for that money. The regulation of their relationship is based on the contractual agreement, which in the energy sector is mainly based on the engineering, procurement, and construction (EPC) model. The objective of this work was to evaluate which factors should be included in the drafting of contracts, to minimize problems between the parties, and thus minimize execution costs and optimize operation and maintenance costs. Information and data on the integration of operability and maintainability criteria in contracts for 158 projects, with a total contract value of close to €40,000M, were analyzed. Several of those projects corresponded to wind, solar, and hydroelectric plants. The information collected the perception of the agents involved, and was classified according to the experience of the agents consulted in the operation and maintenance areas. Finally, the proposed criteria were prioritized. In general, the owner is willing to introduce these criteria in his contracts if they reduce the operation and maintenance cost by around 1–5%, while the contractor is interested in increasing his probability to be selected by 1–3%.

scholarly journals Economic Assessment of Distributed Generation Technologies: A Feasibility Study and Comparison with the Literature

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2764
Author(s):  
Ameena Saad Al-Sumaiti ◽  
Abdollah Kavousi-Fard ◽  
Magdy Salama ◽  
Motahareh Pourbehzadi ◽  
Srikanth Reddy ◽  
...  
Keyword(s):  
Power Generation ◽  
Sensitivity Analysis ◽  
Wind Energy ◽  
Distributed Generation ◽  
Economic Assessment ◽  
Rate Of Return ◽  
Maintenance Cost ◽  
Fuel Cost ◽  
Operation And Maintenance ◽  
Operation And Maintenance Cost

With the negative climate impact of fossil fuel power generation and the requirement of global policy to shift towards a green mix of energy production, the investment in renewable energy is an opportunity in developing countries. However, poor economy associated with limited income, funds availability, and regulations governing project funding and development are key factors that challenge investors in the energy sector. Given the various power generation resources, including renewables, it is necessary to evaluate the possible power generation investment options from an economic perspective. To realize this objective, solar PV, wind and diesel power generations are economically compared, considering the incremental rate of return and incremental benefit to cost ratio techniques. The alternative investment options of distributed generation technologies are evaluated for Maharashtra, India under different depreciation methods, and the effect of the latter on selecting the best investment candidate is investigated. The paper also conducts sensitivity analysis to examine the impact of capital cost, operation and maintenance cost, and fuel cost variations on the selection decision considering a comparison of the different general projects’ cash flow structures discussed in the literature. The economic aspects of selecting a project among possible alternatives for an investment in the power sector are analyzed, and the presented review provides comprehensive comparisons with respect to the literature approaches. The results reveal that, in the benchmark case study, the PV project is rejected and disregarded from further comparisons with other candidate projects since its equity internal rate of return (10.25%) is less than the minimum accepted rate of return, leaving the selection between wind and diesel energy projects. The study reveals that the incremental rates of return under such a comparison are 37.88%, 45.94% and 37.50% when MACRS, declining balance and straight line depreciations techniques are applied, respectively. Thus, the wind energy project is the favored option in this case. For the economic assessment of other case studies, the application of both sensitivity analysis on the capital cost and operation and maintenance cost and literature approaches to structure the projects reveal that wind energy for Maharashtra, India is a more attractive and feasible option compared to other distribution generation projects, while diesel is only considered to be a good option when its fuel cost is reduced by 5%. Finally, the paper highlights policy implications that can influence the decision to move towards investment in distributed generation technologies as a future research direction.

Life-Refurbishment of Service-Degraded Gas Turbine Buckets

2004 ◽  
Author(s):  
Yomei Yoshioka ◽  
Daizo Saito ◽  
Kazutoshi Ishibashi ◽  
Junji Ishii ◽  
Atsuhiko Izumi ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Low Cycle Fatigue ◽  
Hot Isostatic Pressing ◽  
Development Program ◽  
Charpy Impact ◽  
Turbine Rotor ◽  
Fatigue Properties ◽  
Maintenance Cost ◽  
Life Consumption ◽  
Non Destructive

Various methods have been developed, and used in practice, to reduce the maintenance cost of gas turbine hot parts by extending the replacement life. The life-refurbishment process by Hot Isostatic Pressing (HIP) is one of our accomplishments for the buckets retired due to the scheduled life and was confirmed to rejuvenate the microstructures and the tensile, Charpy impact, creep and low cycle fatigue properties to a condition equivalent to or even better than the new ones under the development program. According to above mentioned accomplishments, a number of HIP refurbished buckets were reinstalled in a Chubu Electric Power Co. Inc. (CEPCO) 1100°C-class gas turbine rotor on December 1999 and operated successfully for 2 years under the joint program. Those buckets also served for destructive and non-destructive evaluations after operation. From those tests, we reconfirmed the reliability of the HIP refurbished buckets and also validated that the life-consumption rate was the same as new ones.

Comparison of Externally Fired and Internal Combustion Gas Turbines Using Biomass Fuel

2001 ◽  
Vol 123 (4) ◽  
pp. 291-296 ◽  
Author(s):  
Sandro B. Ferreira ◽  
Pericles Pilidis
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
High Efficiency ◽  
Internal Combustion ◽  
Combined Cycle ◽  
Maintenance Cost ◽  
Combustion Gas ◽  
Exhaust Temperature ◽  
Exergetic Analysis ◽  
Main Components

There is a difference of opinion regarding the relative merits of gas turbines using biomass fuels. Some engineers believe that the internal combustion gas turbine coupled to a gasifier will give a higher efficiency than the externally fired gas turbine using pretreated biomass that is not gasified. Others believe the opposite. In this paper, a comparison between these schemes is made, within the framework of the Brazilian perspective. The exergetic analysis of four cycles is described. The first cycle is externally fired (EFGT), the second uses gasified biomass as fuel (BIG/GT), each of them with a combined cycle as a variant (EFGT/CC and BIG/GTCC). These four are then compared to the natural gas turbine cycles (NGT and NGT/CC) in order to evaluate the thermodynamic cost of using biomass. The comparison is carried out in terms of thermal efficiency and in terms of exergetic efficiency and exergy destruction in the main components. The present analysis shows that the EFGT is quite promising. When compared to the NGT cycle, the EFGT gas turbine shows poor efficiency, though this parameter practically equals that of the BIG/GT cycle. The use of a bottoming steam cycle changes the figures, and the EFGT/CC—due to its higher exhaust temperature—results in high efficiency compared to the BIG/GTCC. Its lower initial and maintenance cost may be an important attraction.

Sign in / Sign up

Export Citation Format

Share Document