Advantages of an application of the generalized method of data reconciliation in thermal technology

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.