NDLI: Impact on Overall Efficiency of Component Efficiency Increases for an Existing Thermal Electrical Generating Station

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Marc, A. Rosen
Copyright Year	2002
Abstract	Most electrical generating utilities are striving to improve the efficiencies of their existing thermal electric generating stations, many of which are old. Exergy methods have been shown to provide meaningful insights that can assist in increasing the efficiency of conventional coal-to-electricity technologies. Here, exergy analysis is used to assess measures for improving the efficiencies of coal-fired electrical generating stations. This scope of the study is limited to minor practical improvements, which can be undertaken with limited effort and cost and are not overly complex. The plant considered is the coal-fired Nanticoke Generating Station (GS) in Ontario, Canada. The findings suggest that the results of exergy analyses should be used, along with other pertinent information, to guide efficiency improvement efforts for thermal generating stations. Also, efficiency improvement efforts should focus on plant components responsible for the largest exergy losses: the steam generator (where large losses occur from combustion heat transfer across large temperature differences), the turbines, the electrical generator and the transformer. Possible improvements in these areas should be assessed in conjunction with other criteria, and other components should be considered where economically beneficial improvements can be identified.
Sponsorship	Advanced Energy Systems Division
Starting Page	29
Ending Page	35
Page Count	7
File Format	PDF
ISBN	0791836266
DOI	10.1115/IMECE2002-33149
Volume Number	Advanced Energy Systems
Conference Proceedings	ASME 2002 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2002-11-17
Publisher Place	New Orleans, Louisiana, USA
Access Restriction	Subscribed
Subject Keyword	Temperature Exergy analysis Coal Power stations Boilers Combustion Generators Exergy Heat transfer Public utilities Turbines
Content Type	Text
Resource Type	Article

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