scholarly journals Early Experience With a 31,050-Hp Regenerative Cycle Gas Turbine

1975 ◽  
Author(s):  
C. A. Kennedy ◽  
R. P. Lang
Keyword(s):  
Gas Turbine ◽  
Sharp Increase ◽  
Early Experience ◽  
Compressor Unit ◽  
Natural Gas Transmission ◽  
Transmission Pipeline ◽  
The Cost ◽  
Operating History ◽  
Major Consideration ◽  
Regenerative Cycle

To gain the economic advantages of size, the trend has been to use larger and larger compressor/driver units in many types of service. Coupled with this “economy of size” trend, the recent sharp increase in the cost of fuel has made driver efficiency a major consideration. This paper describes the application, and discusses the early experience, of a recent installation of a very large, efficient gas turbine driven compressor unit in a natural gas transmission pipeline station. The task of the compressor/driver unit and the station arrangement are described and details of the turbine and compressor are presented. Then a brief account of the operating history is given.

scholarly journals Ten Years’ Operating History of a Large Gas Turbine/Recompression Train

1989 ◽  
Author(s):  
C. Peter Conquergood ◽  
Dave Blauser ◽  
Peter Willbourn
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Compressor Unit ◽  
History Of ◽  
Three Stages ◽  
Operating History ◽  
Canada Limited ◽  
Turbine Exhaust

In 1978, Shell Canada Limited commissioned a large aero-derivative gas turbine driven compressor unit in its Waterton Straddle Plant. This unspared unit provides the primary recompression service in the “Deep Cut” ethane extraction facility. Significant operating features of this unit include flat rating and three stages of waste heat recovery from the turbine exhaust. Throughout its history, this unit has demonstrated over 99% reliability and has operated for long periods without significant maintenance. All routine turbine maintenance has been accomplished on-site. This paper describes the features of the installation, the operating and maintenance philosophy, and the experience obtained from ten years’ service, thus providing the reader with insight in regard to features and practices which can provide for a successful installation.

scholarly journals Life-Cycle Cost Minimization of Gas Turbine Power Cycles for Distributed Power Generation Using Sequential Quadratic Programming Method

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3511 ◽  
Author(s):  
Satriya Sulistiyo Aji ◽  
Young Sang Kim ◽  
Kook Young Ahn ◽  
Young Duk Lee
Keyword(s):  
Life Cycle ◽  
Optimal Design ◽  
Gas Turbine ◽  
Sequential Quadratic Programming ◽  
Cost Reduction ◽  
Life Cycle Cost ◽  
Combined Cycle ◽  
Power Cycles ◽  
The Cost ◽  
Regenerative Cycle

The life-cycle cost reduction of medium-class gas turbine power plants was investigated using the mathematical optimization technique. Three different types of gas turbine power cycles—a simple cycle, a regenerative cycle, and a combined cycle—were examined, and their optimal design conditions were determined using the sequential quadratic programming (SQP) technique. As a modeling reference, the Siemens SGT-700 gas turbine was chosen and its technical data were used for system simulation and validation. Through optimization using the SQP method, the overall costs of the simple cycle, regenerative cycle, and combined cycle were reduced by 7.4%, 12.0%, and 3.9%, respectively, compared to the cost of the base cases. To examine the effect of economic parameters on the optimal design condition and cost, different values of fuel costs, interest rates, and discount rates were applied to the cost calculation, and the optimization results were analyzed and compared. The values were chosen to reflect different countries’ economic situations: South Korea, China, India, and Indonesia. For South Korea and China, the optimal design condition is proposed near the upper bound of the variation range, implying that the efficiency improvement plays an important role in cost reduction. For India and Indonesia, the optimal condition is proposed in the middle of the variation ranges. Even for India and Indonesia, the fuel cost has the largest contribution to the total cost, accounting for more than 60%.

scholarly journals Efficiency Enhancement of Gas Turbine Systems with Air Injection Driven by Natural Gas Turboexpanders

2021 ◽  
Vol 13 (19) ◽  
pp. 10994
Author(s):  
Ali Rafiei Sefiddashti ◽  
Reza Shirmohammadi ◽  
Fontina Petrakopoulou
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Power Plants ◽  
Combined Cycle ◽  
Promising Alternative ◽  
Ambient Temperatures ◽  
Available Energy ◽  
Wide Range ◽  
Natural Gas Transmission ◽  
Transmission Pipeline

The fuel source of many simple and combined-cycle power plants usually comes from a nearby natural gas transmission pipeline at a pressure from 50 to over 70 bar. The use of a turboexpander instead of throttling equipment offers a promising alternative to regulate the pressure of natural gas introduced to the power plant. Specifically, it helps recover part of the available energy of the compressed gas in the transmission pipeline, increase the power output and efficiency of the gas turbine system, and decrease the fuel use and harmful emissions. In this paper, the addition of such a turboexpander in a gas pressure-reduction station is studied. The recovered power is then used to drive the compression of extra air added to the combustion chamber of a heavy-duty gas turbine. The performance of this configuration is analyzed for a wide range of ambient temperatures using energy and exergy analyses. Fuel energy recovered in this way increases the output power and the efficiency of the gas turbine system by a minimum of 2.5 MW and 0.25%, respectively. The exergy efficiency of the gas turbine system increases by approximately 0.36% and the annual CO2 emissions decrease by 1.3% per MW.

Paper 21: Planning for Failures

1969 ◽  
Vol 184 (2) ◽  
pp. 156-160
Author(s):  
R. H. W. Brook
Keyword(s):  
Reliability Analysis ◽  
Gas Turbine ◽  
Gas Turbine Engine ◽  
Failure Pattern ◽  
Management Decisions ◽  
Turbine Engine ◽  
The Cost ◽  
Service Data ◽  
Component Failures ◽  
Realistic Prediction

When a serious failure situation has developed, an expensive crash programme is usually required. If in-service data are analysed as a routine, then impending trouble may be foreseen and management decisions made to minimize the cost. A reliability analysis can help to establish a failure pattern compatible with intuitive engineering assessment so that, from a realistic prediction, alternative courses of action can be considered. A recent gas-turbine engine problem which has caused six component failures is analysed, and alternative replacement strategies are considered. It is suggested that to adopt the intuitive compromise strategy could be the most expensive in this case.

Thermodynamic Evaluation of Gas Turbine Cogeneration Cycles: Part II—Complex Cycle Analysis

1987 ◽  
Vol 109 (1) ◽  
pp. 8-15 ◽  
Author(s):  
I. G. Rice
Keyword(s):  
Gas Turbine ◽  
Heat Balance ◽  
Steam Injection ◽  
Balance Method ◽  
Visual Perspective ◽  
Thermodynamic Evaluation ◽  
The Future ◽  
Steam Cooling ◽  
The Heat Balance ◽  
Regenerative Cycle

Complex open gas turbine cycles are analyzed by applying the heat balance method presented in Part I of this paper. Reheating, intercooling, regeneration, steam injection, and steam cooling are evaluated graphically to give a visual perspective of what takes place in terms of the overall heat balance when such complexities are introduced to the cycle. An example of a viable, new, intercooled regenerative cycle is given. A second example of a prototype reheat gas turbine is also included. The overall approach using the heat balance method can be applied to various cogeneration configurations when considering the more complex cycles of the future.

Gas Turbine Recuperator Technology Advancements

1972 ◽  
Author(s):  
C. F. McDonald
Keyword(s):  
Heat Exchanger ◽  
Power Systems ◽  
Gas Turbine ◽  
Substantial Reduction ◽  
Liquid Fuels ◽  
Cycle Space ◽  
Fuel Savings ◽  
Efficient Heat Transfer ◽  
The Cost ◽  
Turbine Design

Because of intense development in the aircraft gas turbine field over the last 30 years, the fixed boundary recuperator has received much less development attention than the turbomachinery, and is still proving to be the nemesis of the small gas turbine design engineer. For operation on cheap fuel, such as natural gas, the simple cycle-engine is the obvious choice, but where more expensive liquid fuels are to be burned, the economics of gas turbine operation can be substantially improved by incorporating an efficient, reliable recuperator. For many industrial, vehicular, marine, and utility applications it can be shown that the gas turbine is a more attractive prime mover than either the diesel engine or steam turbine. For some military applications the fuel logistics situation shows the recuperative gas turbine to be the most effective power plant. For small nuclear Brayton cycle space power systems the recuperator is an essential component for high overall plant efficiency, and hence reduced thermal rejection to the environment. Data are presented to show that utilization of compact efficient heat transfer surfaces developed primarily for aerospace heat exchangers, can result in a substantial reduction in weight and volume, for industrial, vehicular, marine, and nuclear gas turbine recuperators. With the increase in overall efficiency of the recuperative cycle (depending on the level of thermal effectiveness, and the size and type of plant), the cost of the heat exchanger can often be paid for in fuel savings, after only a few hundred hours of operation. Heat exchanger surface geometries and fabrication techniques, together with specific recuperator sizes for different applications, are presented. Design, performance, structural, manufacturing, and economic aspects of compact heat exchanger technology, as applied to the gas turbine, are discussed in detail, together with projected future trends in this field.

Expectations and Recent Experience for Gas Turbine Reliability, Availability, and Maintainability (RAM)

2007 ◽  
Author(s):  
Robert F. Steele ◽  
Dale C. Paul ◽  
Torgeir Rui
Keyword(s):  
Power Systems ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Advanced Technology ◽  
Recent Experience ◽  
Reliability Growth ◽  
Market Place ◽  
New Product Introductions ◽  
Low Emission ◽  
The Cost

Since the early 1990’s there have been significant changes in the gas turbine, and power generation market place. The ‘F-Class’ Gas Turbines, with higher firing temperatures, single crystal materials, increased compressor pressure ratios and low emission combustion systems that were introduced in the early 1990’s have gained significant field experience. Many of the issues experienced by these new product introductions have been addressed. The actual reliability growth and current performance of these advanced technology machines will be examined. Additionally, the operating profiles anticipated for many of the units installed during this period has been impacted by both changes in the anticipated demand and increases in fuel costs, especially the cost of natural gas. This paper will review how these changes have impacted the Reliability, Availability, and Maintainability performance of gas turbines. Data from the ORAP® System, maintained by Strategic Power Systems, Inc, will be utilized to examine the actual RAM performance over the past 10 to 15 years in relation to goals and expectations. Specifically, this paper will examine the reliability growth of the F-Class turbines since the 1990’s and examine the reliability impact of duty cycle on RAM performance.

Applications of an Interactive Balancing Procedure for Gas Turbines and Other Turbomachinery

2009 ◽  
Author(s):  
Timothy C. Allison ◽  
Harold R. Simmons
Keyword(s):  
Cost Function ◽  
Least Squares ◽  
Gas Turbine ◽  
Case Studies ◽  
Gas Turbines ◽  
Interactive Approach ◽  
Interactive Method ◽  
Balance Weight ◽  
The Cost

Least squares balancing methods have been applied for many years to reduce vibration levels of turbomachinery. This approach yields an optimal configuration of balancing weights to reduce a given cost function. However, in many situations, the cost function is not well-defined by the problem, and a more interactive method of determining the effects of balance weight placement is desirable. An interactive balancing procedure is outlined and implemented in an Excel spreadsheet. The usefulness of this interactive approach is highlighted in balancing case studies of a GE LM5000 gas turbine and an industrial fan. In each case study, attention is given to practical aspects of balancing such as sensor placement and balancing limitations.

Thermodynamic Analysis of Intercooled Gas-Steam Combined and Steam Injected Gas Turbine Power Plants

2004 ◽  
Author(s):  
R. Yadav ◽  
Sunil Kumar Jumhare ◽  
Pradeep Kumar ◽  
Samir Saraswati
Keyword(s):  
Beneficial Effect ◽  
Gas Turbine ◽  
Thermodynamic Analysis ◽  
Power Plants ◽  
Power Production ◽  
Specific Work ◽  
Surface Type ◽  
The Cost ◽  
Current Emphasis ◽  
Plant Efficiency

The current emphasis on the development of gas turbine related power plants such as combined and steam injected is on increasing the plant efficiency and specific work while minimizing the cost of power production per kW and emission. The present work deals with the thermodynamic analysis of intercooled (both surface and evaporative) gas/steam combined and steam injected cycle power plants. The intercooling has a beneficial effect on both plant efficiency and specific work if the optimum intercooling pressure is chosen between 3 and 4. The evaporative intercooler is superior to surface type with reference to plant efficiency and specific work.

scholarly journals Paranoia — is it cost effective?

1990 ◽  
Vol 14 (5) ◽  
pp. 296-297
Author(s):  
C. R. Whyte
Keyword(s):  
Cost Effectiveness ◽  
Effective Treatment ◽  
Cost Effective ◽  
The Cost ◽  
Major Consideration

The cost effectiveness of treatment has to be a major consideration in any well managed service. It is, therefore, the job of management to ensure that effective treatment is delivered efficiently.

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