Download Conversion of Coal-Fired Power Plants to Cogeneration and by Ryszard Bartnik PDF

By Ryszard Bartnik

Conversion of Coal-Fired energy Plant to Cogeneration and Combined-Cycle provides the method, calculation strategies and instruments used to help company making plans for adapting strength stations to cogeneration and combined-cycle forms.

The authors examine the optimal number of the constitution of warmth exchangers in a 370 MW strength block, the constitution of warmth restoration steam turbines and fuel generators. Conversion of Coal-Fired energy Plant to Cogeneration and Combined-Cycle additionally addresses the issues of changing present energy crops to dual-fuel gas-steam combined-cycle applied sciences coupled with parallel structures.

Conversion of Coal-Fired strength Plant to Cogeneration and Combined-Cycle is an informative monograph written for researchers, postgraduate scholars and coverage makers in energy engineering.

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Sample text

It operates in the system of direct cooling of the stator and rotor windings. e. 7 Hard coal 23 kg/s 8C MPa °C MPa °C % – MJ/kg Fig. 8 533 MVA MW kV kA – kA \V Fig. 3 Cross-section of the GTHW-370 generator (1 clamping chamber, 2 rotor winding, 3 stator winding, 4 hydrogen cooler, 5 axial fan) barrel and stator’s core with hydrogen, which fills the entire empty space of the generator. The circulation of the water is induced by pumps situated outside the generator. 3). The heated hydrogen passes through water coolers situated vertically in the most remote chamber in the stator (Fig.

3c), whose energy efficiency is gb, is equal to _ ðPðNCVÞÞ coal ¼ m_ 1 ðh1 À h9 Þ : gb ð2:34Þ The total energy efficiency of the power plant after its modernization to the combined heat and power and repowered by a gas turbine (Fig. 3c) is equal to gEgs ¼ ST GT _ El N El el þ ðÀDN el Þ þ N el þ Qc _ _ ðPðNCVÞÞ coal þ ðPðNCVÞÞgas ð2:35Þ and is higher than the energy efficiency of the power plant prior to the modernization (Fig. 3a) gEel ¼ ¼ N El el El _ ðPðNCVÞÞ coal ½m_ 1 ðh1 À h2 þ h3 À hk Þ À m_ HPR ðh3 À hk Þ À ðm_ dea þ m_ LPR Þðhu À hk ފgme gb m_ 1 ðh1 À h9 Þ þ ðm_ 1 À m_ HPR Þðh3 À h2 Þ ð2:36Þ while the chemical energy stream of the coal combustion in the steam boiler in the power plant is equal to El _ ðPðNCVÞÞ coal ¼ m_ 1 ðh1 À h9 Þ þ ðm_ 1 À m_ HPR Þðh3 À h2 Þ : gb ð2:37Þ The annual net production of electricity in the gas turbogenerator with the gross power of N GT el is equal to GT EGT el; A ¼ N el ð1 À eel ÞsA ; ð2:38Þ where: eel relative coefficient of power station internal load; sA annual in-service time of the power plant.

8 533 MVA MW kV kA – kA \V Fig. 3 Cross-section of the GTHW-370 generator (1 clamping chamber, 2 rotor winding, 3 stator winding, 4 hydrogen cooler, 5 axial fan) barrel and stator’s core with hydrogen, which fills the entire empty space of the generator. The circulation of the water is induced by pumps situated outside the generator. 3). The heated hydrogen passes through water coolers situated vertically in the most remote chamber in the stator (Fig. 3). 4 presents the thermal diagram of the unit that is adapted to the combined heat and power using heaters XC2, XC3 and XC4 supplied from extractions A2, A3 and from IP to LP crossoverpipe.

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