Modeling of characteristics of heat exchangers of heat supply systems in variable operating modes

T. A. Rafalskaya, V. Ya Rudyak, T. A. Rafalskaya

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

Heat exchangers used in heating systems usually operate under conditions of variable flow rates and temperatures of heat carriers. However, the theory for calculating the variable modes of operation of such devices is based on the use of constant parameters of heat exchangers. At the same time it is clear that the parameter of the heat exchanger can be affected by all quantities that determine the change of the heat transfer coefficient. In addition, the groups of heat exchangers with a tied supply of heat, i.e. with redistribution of the heat flow in a variable mode of operation, are used. A new method for calculating the variable modes of operation of heat points with a tied heat supply has been developed. The method of mathematical modeling defines the dependencies that determine the change in the heat exchanger parameters in variable operating modes. The obtained expressions can be used to configure programmable regulators which will allow the correction of inefficient modes of operation of the heating system.

Original languageEnglish
Article number012005
JournalJournal of Physics: Conference Series
Volume1565
Issue number1
DOIs
Publication statusPublished - 28 Jul 2020
Event11th All-Russian Scientific Conference with International Participation on Thermophysics and Power Engineering in Academic Centers, TPEAC 2019 - St.Petersburg, Russian Federation
Duration: 21 Oct 201923 Oct 2019

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