Improving the energy efficiency of the heat network
pdf (Русский)

Keywords

Efficiency coefficient
thermal resistance
linear heat loss
temperature graph
heat network
coolant flow
flow characteristics
control methods

How to Cite

Zhmakin, L., Sharpar, N., & Polutsygan, E. (2022). Improving the energy efficiency of the heat network. Industrial Processes and Technologies, 2(3(5), 76–87. https://doi.org/10.37816/2713-0789-2022-2-3(5)-76-87

Abstract

An efficiency analysis was carried out for the heat network, describing its dependence on the ambient temperature, the flow rate of the coolant, and the temperature graph. It is shown that the efficiency of heat transport can be increased using modern materials as thermal insulation, optimization of quantitative and qualitative regulation of coolant flow in pipelines and reduction of energy consumption by network pumps.

A dimensionless complex is formulated, with the use of which two-dimensional criterion dependences for the efficiency indicator are found, which allow choosing the optimal parameters of the heat network. A graphical method is proposed for finding the optimal coolant flow rate based on the standard efficiency values; which made it possible to reasonably choose the diameters of network pipelines and link their values with the permissible pressure loss.

The functional dependences of the consumption characteristics according to the method of quantitative regulation are given. For thermal networks, they can be used for computer modeling and optimization of their parameters, including optimization of electrical and thermal losses arising in pumps installed in the network.

https://doi.org/10.37816/2713-0789-2022-2-3(5)-76-87
pdf (Русский)
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