Gas turbine topping for existing brown coal fired power plants

Kakaras, E; Vigellis, G; Papageorgiou, N

dc.contributor.author	Kakaras, E	en
dc.contributor.author	Vigellis, G	en
dc.contributor.author	Papageorgiou, N	en
dc.date.accessioned	2014-03-01T02:48:11Z
dc.date.available	2014-03-01T02:48:11Z
dc.date.issued	1993	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33612
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0027840885&partnerID=40&md5=409035228480656a102b7f92e337ac8f	en
dc.subject.other	Efficiency	en
dc.subject.other	Energy conversion	en
dc.subject.other	Gas turbines	en
dc.subject.other	Industrial economics	en
dc.subject.other	Integration	en
dc.subject.other	Lignite	en
dc.subject.other	Natural gas	en
dc.subject.other	Retrofitting	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Brown Coal fired power plants	en
dc.subject.other	Electrical energy production structure	en
dc.subject.other	Gas turbine topping	en
dc.subject.other	Greece	en
dc.subject.other	Lignite fired power plant	en
dc.subject.other	Public power corporation	en
dc.subject.other	Electric power plants	en
dc.title	Gas turbine topping for existing brown coal fired power plants	en
heal.type	conferenceItem	en
heal.publicationDate	1993	en
heal.abstract	Most of the thermal power stations of the Public Power Corporation of Greece (P.P.C.) which operate with brown coal (lignite) are not able to operate with their nominal capacity, and this represents the main difficulty for PPC's efforts to cover the demand for electric power in Greece. This problem can be explained with the observed considerable deviation of the lignite quality from its preestimated value which forces lignite fired Units of 300 MWel to render most of the time 250 MWel which represents a significant economic loss. Considering the fact that natural gas will be available as a primary energy source for Greece in the next years, the possibility of its utilization in the existing electrical energy production structure, should be examined. The paper discusses the integration possibility of gas turbines fired with Natural gas in the same existing lignite fired power plants of northern Greece. A wide range of possible methods of retrofitting brown coal fired power plants with gas turbines is available and a number of alternative solutions are evaluated in this paper. In every test case the gas turbine and the additional steam characteristics will be optimized to cover the gap between nominal and operational load for the existing Units. The increase of the electric power production and the increased efficiency of the total process together with the required modifications of the existing equipment and the availability of the plant, are the main criteria for the evaluation of the proposed alternatives. These alternatives are also evaluated using technoeconomic criteria. The thermodynamic efficiency of the retrofitted installation is calculated and compared to the actual efficiency of the operating plant.	en
heal.publisher	Publ by ASME, New York, NY, United States	en
heal.journalName	American Society of Mechanical Engineers, International Gas Turbine Institute (Publication) IGTI	en
dc.identifier.volume	8	en
dc.identifier.spage	461	en
dc.identifier.epage	466	en