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Advantages of an application of the generalized method of data reconciliation in thermal technology from the decrease of uncertainty of measurements data point of view has been presented. The criterion of an assessment of the decrease of measurements uncertainty in form of global decrease of a measurements variance after measurement data reliability has been proposed. Derivation of the analyzed coefficient bases on the characteristic property of the measurements variance, coming from the variance-covariance matrix of measurements before and after data reconciliation. Exemplary calculations concerning thermal processes in the high-pressure heat regeneration exchangers in the thermal system of selected power unit have been provided. Among the substance and energy balances, the following additional equations have been applied; Peclet's equation for heat transfer in the heat exchangers, equation for over-cooling of condensate from the heat exchangers, Darcy's equation for the steam pressure drop in the steam pipeline. Results of exemplary calculations and final conclusions are presented.
Czasopismo
Rocznik
Tom
Strony
219--232
Opis fizyczny
Bibliogr. 13 poz.,Rys., tab., wz.,
Twórcy
autor
- Silesian University of Technology, Institute of Thermal Engineering, Konarskiego 22, 44-101 Gliwice, Poland, marcin.szega@polsl.pl
Bibliografia
- [1] BAGAJEWICZ M.J.: Process Plant Instrumentation: Design and Upgrade, Technomic Publishing Company, Inc. Lancaster, Pennsylvania, USA, 2001.
- [2] GÖTZ W., REISACHER S.: Data validation improves reliability and accuracy of performance monitoring and field acceptance tests, Proc. of the 3rd Europ. Conf. on Turbomachinery, Orlando Florida USA, December 9-11, 1998.
- [3] RATSCHINGER G.: Assurance and improvement of a measurements quality in energy systems; data reconciliation, Österreichische Ingenieur - und Architekten Zeitschrift, Heft 1/1999.
- [4] RUSINOWSKI H., SZEGA M., MAJCHRZAK H., WITOS T., SZYSZKA P., TROJNIAR W.: Control system of operation of a power unit using data reconciliation for credible of results of measurements, Energetyka nr 3 (573), 2002, 109-116 (in Polish)
- [5] ZIĘBIK A., SZEGA M., RUSINOWSKI H.: Control system of substance and energy balances of combined heat-and-power plants applying the least squares adjustment method, Inter. J. of Applied Thermodynamics, Vol.2 (No.4), 1999, 159-164.
- [6] RUSINOWSKI H., SZEGA M., ZIĘBIK A., MIJAL W., BURYN Z.: Modular system of thermal diagnosis of power units in the power plant Opole, Archives of Thermodynamics, Vol. 29, 2008, No. 4, 163-163.
- [7] SZARGUT J. AT AL.: Reconciliation Calculus in Thermal Engineering, Polish Academy of Sciences, Ossolineum Publisher, Wrocław 1984 (in Polish).
- [8] SZARGUT J., KOLENDA Z., STYRYLSKA T.: Justification of measurement results in thermal technology, Proc. of the Conf. ECOS' 96, Stockholm 1996, 413-418.
- [9] SKOREK J.: Applying Stochastic and Spectral Methods for Solving Boundary Inverse Problem of Heat Conduction, Scientific Book No. 119, Silesian University of Technology Publisher, Gliwice, 1994 (in Polish).
- [10] SZEGA M.: Application of Data Reconciliation Method for Increase of Measurements Reliability in the Power Unit System of a Steam Power Plant, Monograph No. 193, Silesian University of Technology Publisher, Gliwice 2009 (in Polish).
- [11] SZARGUT J.: Technical Thermodynamics, PWN, Warszawa 1991 (in Polish).
- [12] SZARGUT J.: Theory of Thermal Processes, PWN, Warszawa 1973 (in Polish).
- [13] GREŃ J.: Mathematical Statistics. Models and Problems, Edition No. VII, PWN Publisher, Warszawa 1984 (in Polish).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BGPK-2714-0184