1.2.3.4.

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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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