EXERGY AND EXERGOECONOMIC ANALYSIS OF A STEAM BOILER

被引：15

作者：

Mitrovic, Dejan M. ^{[1
]}

Stojanovic, Branislav V. ^{[1
]}

Janevski, Jelena N. ^{[1
]}

Ignjatovic, Marko G. ^{[1
]}

Vuckovic, Goran D. ^{[1
]}

机构：

[1] Univ Nis, Fac Mech Engn, Nish, Serbia

来源：

THERMAL SCIENCE | 2018年 / 22卷

关键词：

exergy destruction; efficiency; exergoeconomic analysis; steam boiler; OPTIMIZATION;

D O I：

10.2298/TSCI18S5601M

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Relying on coal as primary fuel in thermal power plants represents an unsustainable concept due to limited coal reserves and a negative environmental impact. Efficient utilization of coal reserves and a request for minimization of irreversi-bilities are imperative for thermal power plants operation. Numerous studies have shown that a steam boiler is a thermal power plant component with the highest irreversibility. The idea of this paper is to quanta the amounts and sources of irreversibilities within a steam boiler and its components, serving a 348.5MWe thermal power plant. Having this in mind, exergy and exergoeconomic analysis of a steam boiler is presented in this paper. Exergy destruction and exergy efficiency of all boiler components and of the boiler as a whole were calculated. Based on exergy flows and economic parameters (cost of the boiler, annual operation hours of the unit, maintenance factor, interest rate, operating period of the boiler), exergy analysis resulted in the cost of produced steam. The obtained results show that the boiler exergy efficiency is at 47.4%, with the largest exergy destruction occurring in the combustion chamber with a value of 288.07 MW (60.04%), and the smallest in the air heater with a value of 4.57 MW (0.95%). The cost of produced steam is calculated at 49,356.7 $/h by applying exergoeconomic analysis.

引用

页码：S1601 / S1612

页数：12

共 20 条

[1] Exergy, exergoeconomic and environmental analyses and evolutionary algorithm based multi-objective optimization of combined cycle power plants [J].