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1.2.3.4.
©
Survey Of Thermodynamic Methods To Improve The Efficiency
Of Coal-Fired
Electricity Generation
Rosen, MA; Dincer, I
PROFESSIONAL ENGINEERING PUBLISHING LTD, PROCEEDINGS OF THE
INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL
OF POWER AND ENERGY; pp: 63-73; Vol: 217
King Fahd University of Petroleum & Minerals
http://www.kfupm.edu.sa
Summary
Some of the more significant thermodynamic methods to improve the efficiency of
coal-based electricity generation technologies are surveyed and examined, focusing
on minor practical improvements that can be undertaken with limited effort and cost.
Two categories of methods are examined. The first is efficiency-improvement
techniques such as better maintenance and control, application of exergy and related
analysis methods, and use of computer-based simulation, analysis, optimization, and
design. The second category includes efficiency-improvement measures for devices,
including steam generators, condensers, reheaters, and regenerative feedwater heaters.
A case study is presented. It is concluded, for coal-fired electricity generation plants,
that (i) many useful techniques exist (especially exergy analysis) and should be used
for identifying and designing efficiency improvements, and (ii) the many possible
measures to improve efficiency should be weighed against other factors and where
appropriate implemented. Where larger efficiency increases are sought, improvements
applicable over longer time frames and of a broader nature should be investigated.
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