Design And Performance Of Gas Turbine Power Plants Pdf

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Langston, L. March 1,

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ISO 18888:2017

JavaScript is disabled for your browser. Some features of this site may not work without it. My Downloads. Abstract The simple gas turbine engine Operates on the basic Joule-Brayton cycle and it is notorious for its poor thermal efficiency. However, higher values of energy utilisation efficiency have been claimed in recent years by using low grade heat from the engine exhaust either for district heating or for raising low pressure steam for chemical processes.

Both applications are not very attractive in hot countries. The concept of using the low grade thermal energy from the gas turbine exhaust to raise steam in order to drive a steam turbine and generate additional electricity, i. It was hypothesized that the operational parameters, hence the performance of the CPP plant, would depend on the allowable gas turbine entry temperature. Hence, the exhaust gas temperature could not be decided arbitrarily.

This thesis deals with the performance of the gas turbine engine operating as a part of the combined power and power plant. In a CPP plant, the gas turbine does not only produce power but also the thermal energy that is required to operate the steam turbine plant at achievable thermal efficiency. The combined gas turbine-steam turbine cycles are thermodynamically analysed. A parametric study for different configurations of the combined gas-steam cycles has been carried out to show the influence of the main parameters on the CPP cycle performance.

The parametric study was carried out using realistic values in view of the known constraints and taking into account any feasible future developments. The results of the parametric study show that the maximum CPP cycle efficiency would be at a point for which the gas turbine cycle would have neither its maximum efficiency nor its maximum specific work output.

It has been shown that supplementary heating or gas turbine reheating would decrease the CPP cycle efficiency; hence, it could only be justified at low gas turbine inlet temperatures. Also it has been shown that although gas turbine intercooling would enhance the performance of the gas turbine cycle, it would have only a slight effect on the CPP cycle performance. A graphical method for studying operational compatibility, i. The author would like to submit that the graphical method offers a novel and easy to understand approach to the complex problem of component matching.

It has been shown that matching conditions between the compressor and the turbine could be satisfied by superimposing the turbine performance characteristics on the compressor performance characteristics providing the axes of both were normalised. This technique can serve as a valuable tool to determine the operating range and the engine running line. Furthermore, it would decide whether the gas turbine engine was operating in a region of adequate compressor and turbine efficiencies.

A computer program capable of simulating the steady state off-design conditions of the gas turbine engine as part of the CPP plant has been developed. The program was written in Visual Basic. Also, another program was developed to simulate the steady state off-design operation of the steam turbine power plant.

A combination of both programs was used to simulate the combined power plant. Finally, it could be claimed that the computer simulation of the CPP plant makes significant contribution to the design of thermal power plants as it would help in investigating the effects of the performance characteristics of the components on the performance of complete engines at the design and off-design conditions. This investigation of the CPP plant performance can be carried out at the design and engineering stages and thus help to reduce the cost of manufacturing and testing the expensive prototype engines.

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Design and Performance of Gas Turbine Power Plants

Not a MyNAP member yet? Register for a free account to start saving and receiving special member only perks. This chapter describes nine aggressive goals—in power generation, aviation, and oil and gas—that should be pursued as a high priority in order to substantially accelerate the ability to develop advanced technologies that can be introduced into the design and manufacture of gas turbines. The selection criteria for the goals are described in Chapter 1. Power generation turbines for the electrical grid are generally used in one of two different configurations: 1 combined cycle to meet base load power demand, and 2 simple cycle to meet transient and peak power demand. A combined cycle power plant employs both gas turbines and a steam turbine together to produce up to 50 percent more electricity from the same fuel than a simple cycle plant. The waste heat from the gas turbine that escapes through the exhaust in a simple cycle gas turbine is routed to a heat recovery steam generator, where the heat of the exhaust gas is used to generate steam for the steam turbine.

This study presents thermodynamic analysis of the design and performance of eleven selected gas turbine power plants using the first and second laws of thermodynamics concepts. Energy and exergy analyses were conducted using operating data collected from the power plants to determine the energy loss and exergy destruction of each major component of the gas turbine plant. Energy analysis showed that the combustion chamber and the turbine are the components having the highest proportion of energy loss in the plants. Energy loss in combustion chamber and turbine varied from The exergy analysis revealed that the combustion chamber is the most exergy destructive component compared to other cycle components. Exergy destruction in the combustion chamber varied from

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A gas turbine , also called a combustion turbine , is a type of continuous and internal combustion engine. The main elements common to all gas turbine engines are:. A fourth component is often used to increase efficiency on turboprops and turbofans , to convert power into mechanical or electric form on turboshafts and electric generators , or to achieve greater thrust-to-weight ratio on afterburning engines.

ISO specifies standard rules for preparing, conducting, evaluating and reporting thermal performance tests on combined cycle and cogeneration power plants driven by gas turbines for base and part load operation with or without supplementary firing. It can be used to determine the following thermal performance test goals and expected values, under specific operating and reference conditions within defined test boundaries:. ISO does not apply to individual equipment component testing, which is covered by corresponding standards. Proof returned by secretariat 60 Publication Check out our FAQs.

Edited by W. Hawthorne and W. This is a comprehensive presentation of basic problems involved in the design of aircraft gas turbines, including sections covering requirements and processes, experimental techniques, fuel injection, flame stabilization, mixing processes, fuels, combustion chamber development, materials for gas turbine applications, turbine blade vibration, and performance. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions.

Design and Performance of Gas Turbine Power Plants