The effect of the internal reheat application on the efficiency of the 900 MW ultra-supercritical coal-fired power unit

• Autorzy: Łukowicz H. , Dykas S. , Stępczyńska K. , Rulik S.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a thermal-economic analysis of a 900 MW coal-fired power unit for ultra-supercritical parameters with internal steam reheat. The subject of the study was the cycle proposed as the "initial thermal cycle structure" during the completion of the project "Advanced Technologies for Energy Generation" with the steam parameters of 650/670 [degrees]C/30 MPa. Two configurations of internal reheat were analysed: with a fourand seven-section exchanger. The effect of reheat on the operation of the power unit under a partial load was also analysed, and preliminary calculations of the heat exchange area of the internal reheat were made.

Słowa kluczowe

EN

electricity generation efficiency; internal reheat; ultra-supercritical coal-fired power units

PL

sprawność generowania energii elektrycznej; ultra-nadkrytyczne bloki energetyczne; wewnętrzne podgrzewanie

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2011
• Tom: Vol. 32, no. 3
• Strony: 127--144
• Opis fizyczny: Bibliogr. 6 poz.,

Twórcy

autor

Łukowicz H.

autor

Dykas S.

autor

Stępczyńska K.

autor

Rulik S.

• Silesian University of Technology, Institute of Power Engineering and Turbomachinery, ul. Konarskiego 18, 44-100 Gliwice, Poland,

Bibliografia

• [1] CHMIELNIAK T.: Thermodynamical cycles of turbines. Wrocław 1988 (in Polish).
• [2] KRZYŚLAK P., CHMIELNIAK T.: A concept of internal reheat and analysis of its thermodynamical and economical effectiveness. In: Supercritical Cycles for Coal-Fired Systems (T. Chmielniak, A. Ziębik, eds.) Silesian University of Technology Publishers, Gliwice 2010 (in Polish).
• [3] KRZYŚLAK P.: Efficiency of turbopower systems with and without internal reheat. Archiwum Energetyki (Archives of Energetics) XXI (2002), 3/4, 57–69 (in Polish).
• [4] KUBSKI P.: Influence of interstage internal reheat on efficiency of the power unit. Energetyka 4(2001), 189–193 (in Polish).
• [5] LOGAN E. Jr., ROY R.: Handbook of Turbomachinery. 2005.
• [6] PIETROWSKI J. W., FASTOWSKI W. G.: Contemporary high-efficiency heat exchangers. Warsaw 1964 (in Polish).