Abstract
We propose approximation expressions consisting of a combination of standard dynamic sections to replace the transcendent component appearing in the transfer functions of tubular heat exchangers, the input quantities of which are changes in the temperature of the working medium upstream of the heat exchanger and the temperature of heating gases or in the flowrate of working medium and the output quantity of which is the change in the temperature of working medium downstream of the heat exchanger. The accuracy of the approximation is estimated by comparing the initial and approximated frequency responses.
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References
A. A. Armand, “Calculation of Transients in Heat Exchangers,” in Heat Transfer at High Heat Flux and under Other Special Conditions (Gosenergoizdat, Moscow, 1959), pp. 113–136.
A. A. Armand, “Calculation of Transients in Heat Exchangers for Variable Parameters of the Heat Carrier,” in Increasing the Parameters of Steam and Power Capacity of Units in Thermal Power Engineering (Gosenergoizdat, Moscow, 1961), pp. 479–492.
E. P. Stefani, Principles of Calculating the Tuning of Controllers for Regulating Thermal Power Processes, 2nd ed. (Energiya, Moscow, 1972), pp. 299–302 [in Russian].
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Original Russian Text © N.D. Aleksandrova, N.I. Davydov, T.G. Tyupina, 2007, published in Teploenergelika.
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Aleksandrova, N.D., Davydov, N.I. & Tyupina, T.G. Simplified transfer functions of the dynamic models of convective and radiant tubular heat exchangers. Therm. Eng. 54, 786–794 (2007). https://doi.org/10.1134/S0040601507100047
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DOI: https://doi.org/10.1134/S0040601507100047