Computer-Aided Evaluation of Steam Power Plants Performance Based on Energy and Exergy Analysis
Computer-Aided Evaluation of Steam Power Plants Performance Based on Energy and Exergy Analysis

Author: Ahmed ElZayati

Publisher:

Published: 2018-04-04

Total Pages: 136

ISBN-13: 9783668676114

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Master's Thesis from the year 2017 in the subject Engineering - Mechanical Engineering, grade: 90, language: English, abstract: Energy is the cornerstone of the economic development, so it is bound to reexamine the energy policies and take drastic steps to cope with the growing energy consumption. One way used to overcome the power consumption problem is to seek for minimizing losses, which is made by studying the management of power production in steam power plants from the first and second laws of thermodynamics point of view. Some researchers adopt a new approach using a computer software in their studies. A computer program called Energy and Exergy Analyses (EEA) was proposed and built to cover the shortage and overcome the problems of the previous programs. EEA has an interactive form containing many systems which have not been studied in the earlier programs. The proposed program is applicable to any steam power plant. The reversible, isentropic and the actual power of each equipment in the plant are calculated. EEA calculates the thermophysical properties of all supplied streams. It calculates the thermal efficiency, the exergetic efficiency and the exergetic destruction of the power plant. Also, the energy loss and the exergy destruction in the power plant's systems are listed. It presents the exergetic efficiency and destruction of each component and make a comparison between them. As the boiler is a major and important system in the power plant, EEA presents its results in detail. The program gives the energy and exergy efficiencies of the boiler. Generated fuel model and its specifications is presented and it is used in the combustion process formula. Air fuel ratio and adiabatic flame temperature in the stoichiometric and actual combustion are shown. EEA produces the results in reports which contain tables and charts to facilitate the analyses of these results. The recorded parameters of Cairo West Thermal Power Plant (Units 7 & 8) are used to test and

Exergy
Exergy

Author: Ibrahim Dincer

Publisher: Newnes

Published: 2012-12-31

Total Pages: 571

ISBN-13: 0080970907

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Exergy, Second Edition deals with exergy and its applications to various energy systems and applications as a potential tool for design, analysis and optimization, and its role in minimizing and/or eliminating environmental impacts and providing sustainable development. In this regard, several key topics ranging from the basics of the thermodynamic concepts to advanced exergy analysis techniques in a wide range of applications are covered as outlined in the contents. Offers comprehensive coverage of exergy and its applications, along with the most up-to-date information in the area with recent developments Connects exergy with three essential areas in terms of energy, environment and sustainable development Provides a number of illustrative examples, practical applications, and case studies Written in an easy-to-follow style, starting from the basics to advanced systems

Exergy
Exergy

Author: Marc A Rosen

Publisher: Elsevier

Published: 2007-09-18

Total Pages: 473

ISBN-13: 0080531350

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This book deals with exergy and its applications to various energy systems and applications as a potential tool for design, analysis and optimization, and its role in minimizing and/or eliminating environmental impacts and providing sustainable development. In this regard, several key topics ranging from the basics of the thermodynamic concepts to advanced exergy analysis techniques in a wide range of applications are covered as outlined in the contents. - Comprehensive coverage of exergy and its applications- Connects exergy with three essential areas in terms of energy, environment and sustainable development- Presents the most up-to-date information in the area with recent developments- Provides a number of illustrative examples, practical applications, and case studies - Easy to follow style, starting from the basics to the advanced systems

Energy and Exergy Analysis of a Captive Steam Powerplant
Energy and Exergy Analysis of a Captive Steam Powerplant

Author: Jignesh R. Mehta

Publisher: LAP Lambert Academic Publishing

Published: 2014-09-02

Total Pages: 128

ISBN-13: 9783659588068

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The fossil fuel stocks are limited and create pollution when consumed. We need to use them very rationally. Energy has quality as per second law of thermodynamics. Exergy analysis gives insight into quality of energy (exergy) lost in a given system. Exergy analysis focuses on magnitude and true location of energy loss. More effort need to be applied to place where there is more exergy destruction. This work is an energy and exergy analysis of a 43 MW captive co-generation steam power plant at a chemical plant. The co-generation plant produces power and steam from turbine can be used for process heating. Energy and exergy analysis is carried out for all individual components of the plant like boiler, turbine, condenser etc. Major exergy destruction is seen in combustor and heat recovery system. Frequent soot blowing and excess air control are recommended to improve performance of this plant. This can improve boiler efficiency by 2.2% and also reduce environmental emissions significantly. It is recommended to operate plant at high maximum continuous rating (MCR) for higher exergy efficiency of turbine.

Modelling, Simulation and Control of Thermal Energy Systems
Modelling, Simulation and Control of Thermal Energy Systems

Author: Kwang Y. Lee

Publisher: MDPI

Published: 2020-11-03

Total Pages: 228

ISBN-13: 3039433601

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Faced with an ever-growing resource scarcity and environmental regulations, the last 30 years have witnessed the rapid development of various renewable power sources, such as wind, tidal, and solar power generation. The variable and uncertain nature of these resources is well-known, while the utilization of power electronic converters presents new challenges for the stability of the power grid. Consequently, various control and operational strategies have been proposed and implemented by the industry and research community, with a growing requirement for flexibility and load regulation placed on conventional thermal power generation. Against this background, the modelling and control of conventional thermal engines, such as those based on diesel and gasoline, are experiencing serious obstacles when facing increasing environmental concerns. Efficient control that can fulfill the requirements of high efficiency, low pollution, and long durability is an emerging requirement. The modelling, simulation, and control of thermal energy systems are key to providing innovative and effective solutions. Through applying detailed dynamic modelling, a thorough understanding of the thermal conversion mechanism(s) can be achieved, based on which advanced control strategies can be designed to improve the performance of the thermal energy system, both in economic and environmental terms. Simulation studies and test beds are also of great significance for these research activities prior to proceeding to field tests. This Special Issue will contribute a practical and comprehensive forum for exchanging novel research ideas or empirical practices that bridge the modelling, simulation, and control of thermal energy systems. Papers that analyze particular aspects of thermal energy systems, involving, for example, conventional power plants, innovative thermal power generation, various thermal engines, thermal energy storage, and fundamental heat transfer management, on the basis of one or more of the following topics, are invited in this Special Issue: • Power plant modelling, simulation, and control; • Thermal engines; • Thermal energy control in building energy systems; • Combined heat and power (CHP) generation; • Thermal energy storage systems; • Improving thermal comfort technologies; • Optimization of complex thermal systems; • Modelling and control of thermal networks; • Thermal management of fuel cell systems; • Thermal control of solar utilization; • Heat pump control; • Heat exchanger control.

The Exergy Method of Thermal Plant Analysis
The Exergy Method of Thermal Plant Analysis

Author: T. J. Kotas

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 320

ISBN-13: 1483100367

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The Exergy Method of Thermal Plant Analysis aims to discuss the history, related concepts, applications, and development of the Exergy Method - analysis technique that uses the Second Law of Thermodynamics as the basis of evaluation of thermodynamic loss. The book, after an introduction to thermodynamics and its related concepts, covers concepts related to exergy, such as physical and chemical exergy, exergy concepts for a control method and a closed-system analysis, the exergy analysis of simple processes, and the thermocentric applications of exergy. A seven-part appendix is also included. Appendices A-D covers miscellaneous information on exergy, and Appendix E features charts of thermodynamic properties. Appendix F is a glossary of terms, and Appendix G contains the list of references. The text is recommended for physicists who would like to know more about the Exergy Method, its underlying principles, and its applications not only in thermal plant analysis but also in certain areas.