Exergy analysis of a 300 MW lignite thermoelectric power plant

Koroneos, C.; Fokaides, Paris A.; Christoforou, Elias

doi:10.1016/j.energy.2014.07.079

Cited by 21 publications

(6 citation statements)

References 16 publications

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“…A number of previous works to improve the efficiency of energy systems focused on using exergy as the energy "currency" because it allows the locations, types, and true magnitudes of wastes and losses to be determined more readily [3]. A number of authors have used exergy to identify particular areas of inefficiency and recommend potential engineering improvements [30][31][32][33][34]. This method for analysis appears to be growing in popularity and provides detailed information on the thermodynamic imperfections of the system [3].…”

Section: A Brief Utilization History Of Exergymentioning

confidence: 99%

A Review of Exergy Based Optimization and Control

2020

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This work presents a critical review of the use of exergy based control and optimization for efficiency improvements in energy networks, with a background of exergy based analysis given for context. Over the past three decades, a number of studies using exergy were conducted to gain a performance advantage for high energy consumption systems and networks. Due to their complexity and the increased scale of the systems, the opportunity to misuse energy inevitability leads to inefficient operations. The studies accomplished in this area are grouped into either control or optimization to highlight each method's ability to minimize system irreversibilities that lead to exergy destruction. The exergy based optimization and control studies featured demonstrate substantial improvements (as high as 40%) over traditional methods based on the first law of thermodynamics. This paper reviews the work completed in the area of exergy based optimization and control as of the end of September 2019, outlines the progress made, and identifies specific areas where future work can advance this area of study. A relatively small amount of publications are available compared to other fields, with most work occurring in the area of exergy based multi-objective optimization.

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Section: A Brief Utilization History Of Exergymentioning

confidence: 99%

A Review of Exergy Based Optimization and Control

2020

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“…Exergy facilitates performance evaluation of thermal power plant since it enables us to easily understand type, magnitude, locations of losses, and wastes . As it was mentioned, exergy analysis is a powerful method for evaluating both energy quantity and quality in coal‐fired plants by utilizing given data for various conditions . Based on results, exergy loss in the boiler can be decreased by appropriate preheating of air at the entrance of the boiler and decreasing fuel to air ratio .…”

Section: Three‐e Analyses Of Power Plantsmentioning

confidence: 99%

“…67 As it was mentioned, exergy analysis is a powerful method for evaluating both energy quantity and quality in coal-fired plants by utilizing given data for various conditions. 34,[68][69][70][71][72][73][74] Based on results, exergy loss in the boiler can be decreased by appropriate preheating of air at the entrance of the boiler and decreasing fuel to air ratio. 33,75 Wang et al 76 proposed the relationship between power plant's efficiency and irreversibilities in the rotating preheater (used for air) using exergy analysis.…”

Section: Literaturementioning

confidence: 99%

Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review

Ahmadi

Nazari

Sadeghzadeh

et al. 2018

Energy Science & Engineering

104

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Surging in energy demand makes it necessary to improve performance of plant equipment and optimize operation of thermal power plants. Inasmuch as thermal power plants depend on fossil fuels, their optimization can be challenging due to the environmental issues which must be considered. Nowadays, the vast majority of power plants are designed based on energetic performance obtained from first law of thermodynamic. In some cases, energy balance of a system is not appropriate tool to diagnose malfunctions of the system. Exergy analysis is a powerful method for determining the losses existing in a system. Since exergy analysis can evaluate quality of the energy, it enables designers to make intricate thermodynamic systems operates more efficiently. These days, power plant optimization based on economic criteria is a critical problem because of their complex structure. In this study, a comprehensive analysis including energy, exergy, economic (3‐E) analyses, and their applications related to various thermal power plants are reviewed and scrutinized.

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“…[10] Türkiye'deki 9 adet termik santralin performansını karşılaştırmalı olarak, Koreneos vd. [11] 300 MW'lık linyit yakan termik santralin, Pattanyak ve Sahu [12] 460 MW'lık işletme yükündeki pülverize kömür yakan termik santralin, Bolatturk vd. [13] Ankara-Çayırhan termik santralinin, Ahmadi ve Toghraie [14] 200 MW'lık termik santralin, Si vd.…”

Section: Introductionunclassified

Çevre Sıcaklığının Dolaşımlı Akışkan Yataklı Kazanın Ekserji Performansı Üzerindeki Etkisi

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Köse

2019

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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Sunulan bu çalışmada, Eskişehir'in Seyitgazi ilçesinde yer alan bir endüstriyel tesisteki 75 t/h buhar kapasiteli dolaşımlı akışkan yataklı kazanın konvansiyonel ekserji analizi yapılmıştır. Yapılan analizde; çevre sıcaklığındaki değişimin, kazan ve hava ısıtıcısının ekserji performansına olan etkisi irdelenmiştir. Bunun için standart ölü hal koşulu 25℃, 101,325 kPa ve ölçüm değerlerinin ortalaması olarak 17,27℃, 89,4 kPa'ın yanı sıra 30℃, 28℃, 20℃, 15℃ ve 12℃ için hesaplamalar yapılmıştır. Dolaşımlı akışkan yataklı kazan bölümler halinde incelenmesinden ziyade bir bütün olarak kabul edilmiştir. Hava ısıtıcısı ise kazandan ayrı olarak değerlendirilmiştir. Yapılan hesaplamalar sonucunda kazan ve hava ısıtıcısında gerçekleşen ekserji kayıpları belirlenmiştir. Ayrıca kazan ve hava ısıtıcısının ekserji verimleri hesaplanarak ekserji performansı ortaya çıkarılmıştır. Bu çalışma, dolaşımlı akışkan yataklı kazanın ve hava ısıtıcının ekserji performans kriterlerinin çevre sıcaklığındaki değişimden önemli ölçüde etkilendiğini göstermiştir.

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Exergy analysis of a 300 MW lignite thermoelectric power plant

Cited by 21 publications

References 16 publications

A Review of Exergy Based Optimization and Control

A Review of Exergy Based Optimization and Control

Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review

Çevre Sıcaklığının Dolaşımlı Akışkan Yataklı Kazanın Ekserji Performansı Üzerindeki Etkisi

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