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.

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

Process System Value and Exergoeconomic Performance of Captive Power Plants
Process System Value and Exergoeconomic Performance of Captive Power Plants

Author: Dr. Shouri P V Sumesh K T

Publisher: Partridge Publishing

Published: 2021-05-03

Total Pages: 102

ISBN-13: 1543706843

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The economic performance of power plants have received significant notice in today’s modern world. An important parameter that remain as the key performance indicator of power plants of modern times is the plant availability. The out-dated layouts ,components and fuel systems designed of olden times built during plant establishment periods are subject to modifications in terms of configurations ,plant size ,retrofit , renovations and fuel systems with the objective of enhanced economic performance and improved plant availability .In today’s world of depleting energy resources, the importance for energy conservation policies and frame works are high and the outlook towards economic performance of plants and their reliability and availability after process system modifications is highly specific . This book presents the impact of the modifications done in De-Super heater and Flame Burner System of a Boiler during conversion from Oil fired to LNG fired system on the process system value of 7MW Captive power plant of a fertilizer process industry .It also examines the criticality of LNG price variation on the modified processes.First Law Efficiency analysis and Second law efficiency anaylsis are also done on major components of the captive power plant and results are analyzed before and after modifications.