Analysis of fouling thermal resistance of feed-water heaters in steam power plants

• Autorzy: Butrymowicz D. , Głuch J. , Hajduk T , Trela M. , Gardzilewicz A.
• Języki publikacji: EN

Abstrakty

EN

In this paper a problem is discussed of thermal degradation of shell-and-tube recuperative feed-water heaters due to heat transfer surface fouling. Application (to an example steam cycle of power plant) of DIAGAR software system intended for the analysing of impact of degradation of a particular heat exchanger on whole recuperative system performance, is presented. On the basis of the systematically performed simulative calculations it was concluded that the degradation of feed-water heaters of the lowest extraction pressure results in an additional load imposed on the heaters of higher extraction pressures, moreover it was estimated that the degradation of the heaters due to presence of sediments of the thermal resistance reaching 5*10-4 m2*K/W, has resulted in the drop of turbine set efficiency by about 0.3%. Such drop depends on a given configuration of degree of degradation of particular feed-water heaters applied in a considered turbine set.

Słowa kluczowe

EN

steam power unit; fouling; feedwater heaters

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2009
• Tom: S 1
• Strony: 3--8
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Butrymowicz D.

autor

Głuch J.

autor

Hajduk T

autor

Trela M.

autor

Gardzilewicz A.

Bibliografia

• 1. Butrymowicz D., Trela M.: The effect of impurities and inert gases on heat transfer during condensation (in Polish).11th Symposium on Heat and Mass Transfer, vol. 2, Szczyrk, 2001.
• 2. Butrymowicz D., Trela M.: Effects of fouling and inert gases on performance of recuperative feed-water heaters. Archives of Thermodynamics, No. 1-2,Vol. 23, 2001.
• 3. Gardzilewicz A., Głuch J., Uziębło W., Bogulicz M., Kurant B., Krzyślak P., Jamroż J., Jankowski T., Rutkowska K., Rogala I., Dzierzgowski J.: A software system for calculations of turbine thermal cycles (in Polish). Opracowania wewnętrzne Instytutu Maszyn Przepływowych PAN (Internal reports of IFFM), Gdańsk, 1985÷1997.
• 4. Gardzilewicz A., Uziębło W., Głuch J., Bogulicz M., Topolski J.: Modernization of the computer program for calculating thermal cycles, version 1998 (in Polish). Opracowanie wewnętrzne IMP PAN (Internal report of IFFM), No. 267/98, Gdańsk 1998.
• 5. Gardzilewicz A., Głuch J., Bogulicz M., Walkowiak R., Najwer M., Kiebdój J., Banasiewicz J.: Implementation of modern heat-and-flow diagnostics to turbine sets in TURÓW electric power station (in Polish). Proc.of The Conference ENERGETYKA’2004, Wrocław, 6÷8 November 2004
• 6. Krzyżanowski J., Głuch J.: Heat-and-flow diagnostics of power objects (in Polish). Wydawnictwo IMP PAN (IFFM Publishers), Gdańsk, 2004.
• 7. Butrymowicz D., Hajduk T., Karwacki J.: A method for measuring the fouling thermal resistance of heat exchangers (in Polish). 13th Symposium on Heat and Mass Exchange, Koszalin-Darłówko, 2007.
• 8. Butrymowicz D.: Analysis of possible measurement of thermal resistance of surface fouling of heat exchangers (in Polish). Opracowanie wewnętrzne Instytutu Maszyn Przepływowych PAN (Internal report of IFFM),, No. 281/1996, Gdańsk, 1996.
• 9. Zhang C.: Local and Overall Condensation Heat Transfer Behaviour in Horizontal Tube Bundles. Heat Transfer Engineering, Vol. 17, No 1, 1996.
• 10. Berman S.S.: Calculation of surface heat transfer equipment for condensation of steam from air-steam mixture (in Russian), Teploenergetika, No 7, 1959.
• 11. Trela M., Butrymowicz D., Matysko R.: Diagnostics of flow and thermal processes in power plant equipment. Chapter 7, Monograph on Diagnostics of New-Generation Thermal Power Plants, IFFM Publishers, Gdańsk, 2008.