Thermodynamic and economic study of two configurations of solar thermal power plant / Madjid Amani (2021) 

Public ISBD Titre : Thermodynamic and economic study of two configurations of solar thermal power plant Type de document : texte imprimé Auteurs : Madjid Amani, Auteur ; Adel Ghenaiet, Directeur de thèse ; Smaili, Arezki, Directeur de thèse Editeur : [S.l.] : [s.n.] Année de publication : 2021 Importance : 151 f., 1 fichier PDF (3.40 Mo) Présentation : ill. Format : 30 cm Note générale : Mode d'accès : accès au texte intégral par intranet. Thèse de Doctorat : Génie Mécanique : Alger, École Nationale Polytechnique : 2021 Bibliogr. f. 127 - 142 . Annexe f. 143- 151 Langues : Anglais (eng) Mots-clés : Integrated solar  Combined cycle Solar power tower Heat recovery Steam generator Index. décimale : D004521 Résumé : The present thesis is concerned with thermodynamic and economic investigations of two different integrated solar combined cycle (ISCC) plants. The first plant integrates a parabolic trough collector (PTC) technology into a combined cycle (CC) to constitutem the ISCC-PTC system where solar heat is introduced in the steam cycle and the second one is integrating a solar power tower (SPT) system to compose the ISCC-SPT. The latter is a proposed configuration which integrates solar thermal energy as sensible heat to heat up the exhaust gases from the gas turbine, thus solar integration plays the role of supplementary firing. The thermal performances analysis shows high thermal efficiency values during the day for both ISCC-PTC and ISCC-SPT which are about 59 % and 64 % respectively much higher when they work as a CC mode during night or cloudy periods. In addition, the economic assessment for the electricity cost expressed by the levelized cost of energy (LCOE) are about 0.0222 $/kWh for the ISCC-PTC and 0.0301 $/kWh for the ISCC-SPT. These LCOE values could be reduced through an optimization and become competitive when the environment cost is taken into consideration. Also, a comparative study of instantaneous and annual performances between these two ISCC configurations is carried out. The obtained results reveal that ISCCSPT performs better than ISCC-PTC and it shows noticeable enhancements in solar-toelectric efficiency throughout the year. In terms of economic comparison, both power plants show approximately the same LCOE value of about 0.0297 $/kWh and 0.0269 $/kWh for ISCC-SPT and ISCC-PTC respectively. Furthermore, these two solar systems permit an important fuel saving and less pollutant emission during the operating lifetime. All these outcomes allow concluding that integration of concentrating solar technologies into a CC is a promising option as it is technically and economically viable over the operating lifetime. Thermodynamic and economic study of two configurations of solar thermal power plant [texte imprimé] / Madjid Amani, Auteur ; Adel Ghenaiet, Directeur de thèse ; Smaili, Arezki, Directeur de thèse . - [S.l.] : [s.n.], 2021 . - 151 f., 1 fichier PDF (3.40 Mo) : ill. ; 30 cm. Mode d'accès : accès au texte intégral par intranet. Thèse de Doctorat : Génie Mécanique : Alger, École Nationale Polytechnique : 2021 Bibliogr. f. 127 - 142 . Annexe f. 143- 151 Langues : Anglais (eng) Mots-clés : Integrated solar  Combined cycle Solar power tower Heat recovery Steam generator Index. décimale : D004521 Résumé : The present thesis is concerned with thermodynamic and economic investigations of two different integrated solar combined cycle (ISCC) plants. The first plant integrates a parabolic trough collector (PTC) technology into a combined cycle (CC) to constitutem the ISCC-PTC system where solar heat is introduced in the steam cycle and the second one is integrating a solar power tower (SPT) system to compose the ISCC-SPT. The latter is a proposed configuration which integrates solar thermal energy as sensible heat to heat up the exhaust gases from the gas turbine, thus solar integration plays the role of supplementary firing. The thermal performances analysis shows high thermal efficiency values during the day for both ISCC-PTC and ISCC-SPT which are about 59 % and 64 % respectively much higher when they work as a CC mode during night or cloudy periods. In addition, the economic assessment for the electricity cost expressed by the levelized cost of energy (LCOE) are about 0.0222 $/kWh for the ISCC-PTC and 0.0301 $/kWh for the ISCC-SPT. These LCOE values could be reduced through an optimization and become competitive when the environment cost is taken into consideration. Also, a comparative study of instantaneous and annual performances between these two ISCC configurations is carried out. The obtained results reveal that ISCCSPT performs better than ISCC-PTC and it shows noticeable enhancements in solar-toelectric efficiency throughout the year. In terms of economic comparison, both power plants show approximately the same LCOE value of about 0.0297 $/kWh and 0.0269 $/kWh for ISCC-SPT and ISCC-PTC respectively. Furthermore, these two solar systems permit an important fuel saving and less pollutant emission during the operating lifetime. All these outcomes allow concluding that integration of concentrating solar technologies into a CC is a promising option as it is technically and economically viable over the operating lifetime.

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