[en] In view of the constant growth of electricity usage and public pressure to reduce the dependence on nuclear power plants in the energy supply, solutions are sought to increase the capacity of power plants using fossil fuels. Highly efficient cycles are available : gas turbines combined with waste heat boilers and steam cycles are able to achieve efficiencies above 50-55%. However building new plants requires a large amount of capital. Alternative proposals are based on upgrades of existing plants : capital savings are expected by reusing part of the facilities. In the present study, three parallel proposals are compared on the basis of exergy efficiency; cost of investment and flexibility of operation are also discussed. They are compared with classical Rankine cycle and state of the art combined cycles. (C) 1998 Elsevier Science Ltd. All rights reserved.
Disciplines :
Chemical engineering Energy
Author, co-author :
Heyen, Georges ; Université de Liège - ULiège > Département de chimie appliquée > LASSC (Labo d'analyse et synthèse des systèmes chimiques)
Kalitventzeff, Boris ; Université de Liège - ULiège > Services généraux (Faculté des sciences appliquées) > Relations académiques et scientifiques (Sciences appliquées)
Language :
English
Title :
A comparison of advanced thermal cycles suitable for upgrading existing power plant
Publication date :
1999
Journal title :
Applied Thermal Engineering
ISSN :
1359-4311
eISSN :
1873-5606
Publisher :
Pergamon Press - An Imprint of Elsevier Science, Oxford, United Kingdom
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Bibliography
S.A. Belsim, SIMU II users guide, Belsim, Allée des Noisetiers, 1, B-4031 Angleur Belgium, 1995.
H. Kotschenreuther, Improvement of existing large steam power plant by conversion to combined cycle plant, Proceedings of International Conference on Assessment and Extension of the Residual Lifetime of Fossil-Fired Power Plants, Moscow, May 16-20 1994.
J. Ribesse, Cycle de turbine à gaz comportant un réacteur d'oxydation partielle catalytique de gaz naturel, son application dans des systèmes énergie-chaleur, Proceedings of 8th World Energy Conference, paper 3. 1-30, Bucharest, 1971.
Ribesse J. The isotherm partial oxidation gas turbine. European Journal M. 36:(1):1991;27-32.
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