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Our mathematic model checks the losses in the network of centralised heat supply

10.09.2020

The University Centre for Energy Efficient Buildings CTU in Prague finished and tested within the contractual research for the ČEZ Teplárenská company a mathematic model that will contribute to better checking of the state of a district heating network.

We created a mathematic model for various types of pipeline placement (channel-less, channel, overground), based on physical parameters (geometry of the pipeline and its placement, heat characteristics of the material, including their degradation in time) and laws of heat transfer.

We successfully validated the model with data evaluated in monthly intervals during the years 2013 to 2019 on two distribution systems with different pipeline placement types. We also examined various climate condition influences (solar radiation, air flow speeds) more in depth. The created model will serve for the prediction of heat losses and possible diagnostics of the degradation of heat insulation or faults in the distribution system.