«Automation and Informatization of the fuel and energy complex»

Recurrent relationships for modeling the dynamics of heat transfer processes in pipelines of heating networks

UDC: [62-932.2+51-74]:621.6
DOI: -

Authors:

¹ Melentiev Energy Systems Institute SB RAS, Irkutsk, Russia

Keywords: mathematical modeling, water heat networks, dynamic modes, heat exchange

Annotation:

The authors of the article consider obtaining and analyzing the applicability of final expressions for describing heat transfer processes in heat network (HN) pipelines for prediction and filtration problems. Various variants of equations, including integral equations of energy and momentum conservation, are considered. Justification of their use as well as their simplification with account for real conditions of operation of heat networks, physical properties of heat carrier (water) and heat exchange processes is given. Numerical studies have been carried out, the results of which have shown the potential possibility of using the simplified equation when modeling dynamic temperature states of water heat networks. On the basis of the proposed equation, a recurrence relation has been obtained, linking the value of the heat carrier temperature at the end of the pipeline at the current moment of time with the preceding one, which can be used as a basis for the solution of temperature forecasting problems for the organization of tracking (monitoring) processes.

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