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Linearization of a heat-transfer system model with approximation of transport time delay

  • Automation and Heat Control in Power Engineering
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Abstract

A method is proposed for linearizing the nonlinear model of a heat-transfer facility the state variables of which at equilibrium points are determined by numerically solving the initial bilinear system of differential equations for a stationary position of the control valve equipped with a constant-speed electric drive. The considerable transport time delay resulting from the distributed design of the heat-transfer system secondary circuit is approximated by a limited number of first-order inertial sections for obtaining a mathematical model in the Cauchy form. The proposed linearization method is tested on an operating hot-water supply heat-transfer system, and the study results are presented in the form of transient curves.

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Authors and Affiliations

  1. National Research Tomsk Polytechnic University, pr. Lenina 30, Tomsk, 634050, Russia

    A. A. Shilin & V. G. Bukreev

Authors
  1. A. A. Shilin
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  2. V. G. Bukreev
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Correspondence to A. A. Shilin.

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Original Russian Text © A.A. Shilin, V.G. Bukreev, 2014, published in Teploenergetika.

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Shilin, A.A., Bukreev, V.G. Linearization of a heat-transfer system model with approximation of transport time delay. Therm. Eng. 61, 741–746 (2014). https://doi.org/10.1134/S0040601514100115

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  • DOI: https://doi.org/10.1134/S0040601514100115

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