Evaluation of the Dependence of the Value of Heat Flux and Temperature on Heat Losses of the Heating Main

Abstract

Reduction of heat losses in the process of its delivery to the consumer through pipelines is the most important task of heat supply organizations, the results of which have a serious impact on the formation of the heat tariff. The purpose of this work is to study the dependence of the heat flow values of a two-pipe heat network of a channel gasket when the supply and return pipes run in a single reinforced concrete box against the quality of thermal insulation. The main idea of the method is that the heat flow from the pipeline directly depends on the temperature of the flowing heat transfer fluid, which can be considered known, the shape and geometric dimensions of the structure and, importantly, on the quality of the insulating materials. In other words, if the quality of insulation worsens, the heat flow inherent in an efficient design will inevitably change, which will make it possible, as a result of applying the proposed method, to audit the heating main. The conclusions and relationships presented in this paper are based on static thermal modeling in the mathematical package ANSYS 17.1. In the study, the temperature and heat flux at the point are determined as a function of the total heat transfer to the atmosphere. The results obtained in this paper can be used to audit heating mains by measuring the thermophysical values of the surrounding tube.