Efficiency improvement of existing lignite-fired power plants

Kakaras, E

dc.contributor.author	Kakaras, E	en
dc.date.accessioned	2014-03-01T01:48:32Z
dc.date.available	2014-03-01T01:48:32Z
dc.date.issued	1999	en
dc.identifier.issn	14353199	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25516
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0032691173&partnerID=40&md5=786672b651efd43af42ff7fd83c8e870	en
dc.subject.other	Coal fired boilers	en
dc.subject.other	Cooling towers	en
dc.subject.other	Energy efficiency	en
dc.subject.other	Feedwater heaters	en
dc.subject.other	Flue gases	en
dc.subject.other	Gas emissions	en
dc.subject.other	Industrial emissions	en
dc.subject.other	Lignite	en
dc.subject.other	Retrofitting	en
dc.subject.other	Soot blowers	en
dc.subject.other	Steam turbines	en
dc.subject.other	Lignite-fired power plants	en
dc.subject.other	Fossil fuel power plants	en
dc.title	Efficiency improvement of existing lignite-fired power plants	en
heal.type	journalArticle	en
heal.publicationDate	1999	en
heal.abstract	In this paper the results of an extended study aiming at the efficiency improvement of Greek lignite-fired power plants are presented. The investigations deal with the evaluation of several measures taken in connection with the boiler refurbishment, such as: - boiler sealing (reduction of leakage air), - optimization of the soot blowers performance, - installation of additional heating surfaces, together with optimization measures for the cold end of the water-steam cycle through modifications of the - steam turbine, - cooling towers. In accordance with the international experience, the results of this study have confirmed that: - the replacement of the turbine blades and the measures for the cold end optimization have a significant effect on the efficiency improvement, - the reduction of the flue gas outlet temperature through the installation of additional heating surfaces mainly results in the performance improvement of the ESP's and additionally it has only a limited influence on the power plant efficiency, - boiler sealing measures for the reduction of the infiltration air and the soot blower measures should be realized in the short run.	en
heal.journalName	VGB PowerTech	en
dc.identifier.volume	79	en
dc.identifier.issue	9	en
dc.identifier.spage	37	en
dc.identifier.epage	43	en